Application of FDA Discriminant Analysis Methodin Classification of Tunnel Surrounding Rocks by CHEN Liang, HAN Aiguo, CHEN Qiang, REN Guangming

“…Aiming at the classification of tunnel surrounding rock, and taking the surrounding rock of a water conveyance tunnel in southwest China as the research object, this paper comprehensively selects 8 indicators such as uniaxial saturated compressive strength of rock, volume joint count, rock mass integrity coefficient, main structural surface occurrence, rock quality, strength-stress ratio, crack weathering.and joint set in hydropower surrounding rock classification and Q system classification as the discriminant factors to establish the corresponding Fisher discriminant model, tests the modeling data one by one by the back-substitution estimation method, with the consistency rate of 89.5%, and applies the discriminant model to the remaining sections of the tunnel to obtain the prediction results, which are consistent with the actual situation. …”
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Study on Quality Inspection and Anti-Seepage Performance Evaluation of Karst Underground Dam Curtain by ZHANG Kai, SU Zhengyang, LIU Chengdong, SHEN Guangze, JIAO Jie

“…There are many problems in the quality inspection and anti-seepage performance evaluation of karst underground dam's curtain because of its special structure and environment.Taking a typical karst underground dam seepage prevention system in southwest China as the research object,this paper identifies the distribution and weak parts of the anti-seepage curtain through the high-density resistivity method,further verifies the accuracy of results from high-density resistivity method through local water pressure test in borehole,and analyzes the composition and corrosion type of precipitates by precipitation thermogravimetry.This study provides a feasible plan for the current quality inspection and anti-seepage performance evaluation of karst underground dam,has a strong engineering reference significance for the popularization and application of karst underground dam and its safety assurance in the operation period,and also serves as an important reference for the establishment and improvement of the performance evaluation system and monitoring mechanism for the seepage control of underground reservoirs in karst areas.…”
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Research on In-situ Sludge Solidification in the Ecological Refuse Landfill Closure Project by ZHANG Xiaoyu, ZHOU Xianjin, CAO Jun

“…For the site pilot test of in-situ sludge solidification in a large ecological landfill closure project in southwest China,this paper adopts five kinds of curing agent mix ratios for site construction,adds curing agent and conducts in-situ mixing with cleaning and mixing equipment after pretreatment of sludge,and drills and samples the treated refuse soil after rolling and curing.The test results show that the sludge treated with five kinds of curing agents could meet the design requirements on pH,moisture content,shear strength and unconfined compressive strength.Through the comparison of shear strength and unconfined compressive strength,the effect of No.5 curing agent is the best,that is,in the curing agent,the ordinary silicate content is 19.3%,the fly ash content is 6.43%,and the curing agent ratio is 25.73%.In the actual construction,the No.5 mix ratio is widely used.In addition,according to the difference of physical properties of sludge in level and treatment direction,the mix ratio of curing agent and the parameters of mixing equipment shall be adjusted appropriately to ensure the uniformity of sludge curing effect.…”
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Naxi Cosmology of Mt Yulong Sacred Sites with Caveats for Conservation by Jan Salick, Robbie Hart, Li Siyu

“…Mt Yulong is central to Naxi people of Southwest China. Through participatory mapping, free listing, and extended semi-structured interviews, we explored relations of Naxi cosmologies of sacred space with “biodiversity conservation”. …”
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The complete mitochondrial genomes and phylogenetic analysis of two Chinese endemic cave fishes, Sinocyclocheilus guilinensis and S. huangtianensis (Cypriniformes: Cyprinidae) by Guojin Yao, You He, Chenhong Li

“…Sinocyclocheilus is a group of cyprinid fishes endemic to China distributed in the karst region of southwest China. In this study, the complete mitogenomes of Sinocyclocheilus guilinensis Ji, 1985 and Sinocyclocheilus huangtianensis Zhu et al. 2011 are reported and characterized. …”
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Response Analysis of Dam Heel and Gallery Arch before and after Backfilling and Water Filling of High Dam by FU Yuchen, HU Yu, TAN Raosheng, ZHOU Mengxia, LIU Chunfeng, PEI Lei

“…As the key to the construction of high dams,backfilling in front of the dam and filling of the foundation pit have an important impact on the stress state of key parts of the dam body,such as the dam heel and gallery arch.Therefore,this paper studies the response of dam heel and gallery arch before and after backfill and foundation pit filling of a high dam in Southwest China based on the monitoring data and simulation analysis.The results show that under the combined effect of weight,temperature and hydrostatic pressure,due to the influence of the backfill in front of the dam and the water filling height of the foundation pit,the tensile stress produces at the dam heel,and the compressive stress increases along the river at the gallery arch,with the maximum increment of 1.24 MPa.Thus,the tensile stress of the gallery arch is weakened and the stress state of the high dam is optimized,which can be further verified through the comparison with monitoring data.…”
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Analysis of Flow and Pressure Pulsation in Draft Tube of Francis Turbine under Different Guide Vane Opening by REN Haibo, YU Bo, WANG Kui, WANG Luobin

“…In order to explore the influence of the opening of the movable guide vane on the flow and pressure pulsation in the draft tube of the Francis turbine,the steady and unsteady numerical simulations were carried out by establishing a three-dimensional full-flow channel model of a Francis turbine in a power station in southwest China,and the flow characteristics and pressure pulsation of the draft tube of the Francis turbine under different guide vane opening of the rated head were studied.The results show that with the increase in guide vane opening,obvious alternating vortices appear in the straight cone section of the draft tube,which cause low-frequency pressure pulsation in the draft tube.The uniformity of pressure and velocity distribution in the draft tube gradually deteriorates,and the main frequency amplitude of pressure pulsation at the elbow section of the draft tube increases first and then decreases.The vortex zone of the draft tube causes the pressure pulsation of low frequency and high amplitude in the draft tube.…”
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The Influence of Stress Perception on Academic Procrastination in Postgraduate Students: The Role of Self-Efficacy for Self-Regulated Learning and Self-Control by Yan Ma, Xi Mei Yang, Lan Hong, Ren Ju Tang

“…Based on the cognitive theory perspective, this study conducted a web-based questionnaire survey on full-time master’s students enrolled in a teacher training university in southwest China. The data collected were analyzed by using SPSS software with hierarchical regression and PROCESS macroprogramming techniques to investigate the relationship between stress perception and academic procrastination and the moderating effects of self-regulated learning efficacy and self-control among master’s students. …”
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Reconstructed Target Range Profile via Unitary ESPRIT Superresolution Algorithm by Rui Zhang, Min Zhang, Xin Wang, Zhaohui Cai

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Characteristics and spatiotemporal changes in phenotypes and genotypes of extended-spectrum β-lactamases in Escherichia coli isolated from bloodstream infections in China from 2014... by Sayyed Salman, Hao Xu, Yunbo Chen, Jinru Ji, Zhiying Liu, Yonghong Xiao

“…Regarding the geographical distribution of the ESBLs, the highest rate of ESBL genetic positivity was observed in Southwest China, accounting for 84.9% (45/53), and the lowest was observed in Northeast China, with 73.2% (30/41). …”
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The Power of Folk Music: City Branding, Musical Imaginaries, and Tourism-induced Placemaking in Yulin, Chengdu (China) by Shuyue Chen

“…This paper is a case study of a neighborhood called Yulin in Chengdu in southwest China. Developed in the 1980s, Yulin was an ordinary neighborhood representing Chengdu’s work unit housing in the 1980s and 90s. …”
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Research on Green Building Design Optimization Based on Building Information Modeling and Improved Genetic Algorithm by Fengtao Liu, Ting Ouyang, Bingzhang Huang, Jiehong Zhao

“…Based on this, building information modeling (BIM) modeling was carried out for an office building project in Southwest China, and energy consumption analysis and evaluation were conducted based on the project’s multidisciplinary model. …”
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Uncovering the complex relationships among distributed leadership, departmental teacher leadership, and professional learning community in Chinese schools by Xin Zheng, Chenxi Jiang, Chenlu Liu

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Correction: Genome assembly of an endemic butterfly (Minois aurata) shed light on the genetic mechanisms underlying ecological adaptation to arid valley habitat by Wenqian Hu, Yi Wang, Xiaoxiao Chen, Jialong Huang, Jingge Kuang, Lei Wang, Kangshan Mao, Liang Dou

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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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Evaluation of the Influence Caused by Tunnel Construction on Groundwater Environment: A Case Study of Tongluoshan Tunnel, China by Jian Liu, Dan Liu, Kai Song

“…This study presents an indicator system and quantifies each indicator of Tongluoshan tunnel, which is located in southwest China with a length of 5.2 km and mainly passes through carbonate rocks and sandstones, based on field investigation and related technological reports. …”
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Impacts of Future Climate Changes on Shifting Patterns of the Agro-Ecological Zones in China by Yingzhi Lin, Anping Liu, Enjun Ma, Fan Zhang

“…The shifting patterns of AEZs will be characterized by northward expansion of humid AEZs to subhumid AEZs in south China, eastward expansion of arid AEZs to dry and moist semiarid AEZs in north China, and southward expansion of dry semiarid AEZs to arid AEZs in southwest China.…”
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Study on the Dynamic Response of Landslide Subjected to Earthquake by the Improved DDA Method by Xiu-Li Zhang, Bi-Ting Xie, Hao Wang, Yu-Yong Jiao

“…Majiagou landslide, a major ancient landslide in Three Gorges Reservoir region, is located in the high earthquake area of southwest China. The 2013 Badong earthquake caused an obvious deformation of landslide monitored by the sliding inclinometer. …”
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A Direct Eulerian GRP Scheme for the Prediction of Gas-Liquid Two-Phase Flow in HTHP Transient Wells by Jiuping Xu, Min Luo, Jiancheng Hu, Shize Wang, Bin Qi, Zhiguo Qiao

“…The basic data of “X well” (HTHP well), 7100 m deep, located in Southwest China, is used for the case history calculations. …”
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Mechanical Properties of Soft Rocks Subjected to Water-Rock Reaction and Cyclic Pressure by Wei Huang, Rui Feng, Huanran Fu, Jingyu Chen, Zili Feng

“…In this paper, two soft rocks from Southwest China (i.e., muddy siltstone and silty mudstone) were selected as test samples. …”
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