Article
Multidisciplinary Sciences
Gaofeng Wang, Yetong Gan, Haodong Yang
Summary: This study explores the relationship between knowledge diversity of collaborating team members and research performance. It finds that the relationship between interdisciplinary collaboration diversity and societal impact follows an inverted U-shaped pattern, rather than a simple linear one. Additionally, as the number of collaborative disciplines increases, the negative influences start to outweigh the benefits, indicating that diversity does not always lead to positive impacts.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Civil
Yi Zhao, Xuhong Zhou, Yuanlong Yang, Jiepeng Liu, Yohchia Frank Chen
Summary: This study discusses the negative bending behavior of reinforcement stiffened cold-formed U-shaped steel and concrete composite beams. Two distinct failure modes were identified depending on the installation of inverted U-shaped reinforcement: ductile plastic failure mode and sudden elastic failure mode. An effective negative bending design method was proposed, with contributions to the negative bending capacity from slab reinforcement, steel U-section, encased concrete, and bottom reinforcement.
ENGINEERING STRUCTURES
(2021)
Article
Construction & Building Technology
Binhui Lu, Weidong Lu, Mingming Zhong, Weiqiang Wu, Peng Zhou
Summary: A novel connector design, the coupled U-shaped flexural plate connector (CUFPC), was proposed to meet the requirements of energy dissipation, easy installation and replacement for cross-laminated timber (CLT) wall system under earthquake. Through the establishment of a stiffness model and various tests, it has been demonstrated that CUFPC is effective in improving the performance of CLT wall system.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Economics
Gang Jin, Binbin Yu, Kunrong Shen
Summary: Boosting domestic trade and increasing energy productivity are main objectives in China's new normal economic development. The study finds an inverted U-shaped effect of domestic trade on the growth of energy total factor productivity (TFP), supporting the strategy proposed by the Chinese government to build a new development pattern with a large domestic cycle as its mainstay and in which a dual domestic and international cycle would be mutually promoting.
Article
Business
Yaozhi Zhang
Summary: This study challenges the conventional wisdom by examining the potential curvilinear effects of tourist co-creation on tourism marketing outcomes. The findings reveal an inverted U-shaped relationship between the degree of tourist co-creation and various tourism marketing performance indicators. Additionally, the study highlights the positive moderating role of tourist experiential fluency in this relationship, providing practical measures to mitigate the negative impacts of excessive tourist co-creation on tourism marketing outputs.
JOURNAL OF BUSINESS RESEARCH
(2023)
Article
Psychology, Multidisciplinary
Haibo Yu, Changli Yan, Lu Zhang, Zhenhua Dong, Long Cheng, Xiaoming Zheng, Ziqian Zhao
Summary: This study explores the employability paradox and finds that perceived employability has different effects on employee turnover intention and job performance, with seniority being a key factor. The study emphasizes the importance of employability for employers and provides practical recommendations for enhancing employability for employees with different levels of seniority.
FRONTIERS IN PSYCHOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Yipeng Tao, Zhengrong Tong, Weihua Zhang, Haozheng Yu, Jinlin Mu, Xue Wang, Lifang Xue
Summary: In this manuscript, a temperature-insensitive U-shaped single-mode fiber blood glucose concentration sensor is proposed. The sensor is made by burning a balloon-shaped fiber into a spindle shape and then forming a U-shaped fiber. The sensor shows high sensitivity to blood glucose concentration and insensitivity to temperature in the range of 5℃-45℃. Additionally, it has the advantages of small size, low cost, and simple process.
OPTICAL FIBER TECHNOLOGY
(2023)
Article
Environmental Studies
Ruijing Zheng, Ge Wu, Yu Cheng, Haimeng Liu, Yaping Wang, Xinyang Wang
Summary: Digitalization has a non-linear impact on carbon emissions in China, with an inverted U-shaped effect. The impact is more significant in eastern and non-resource-based cities. In central and western cities, the impact is not significant, and resource-based cities have not yet reached the carbon reduction inflection point. Digitalization reduces carbon emissions of neighboring cities in the mature digital period and affects emissions through industrial structure upgrading and economic development.
ENVIRONMENTAL IMPACT ASSESSMENT REVIEW
(2023)
Article
Multidisciplinary Sciences
Rodrigo T. Rocha, Mohammad Younis
Summary: This study presents a comprehensive investigation of the nonlinear saturation phenomenon on a compound micromachined structure. Experimental data and analytical simulations confirm the presence of internal resonance and saturation. The results are promising for further exploration and in-depth studies of compound structures and other systems.
SCIENTIFIC REPORTS
(2022)
Article
Business
Shuiquan Jiang, Jie Yang, Mingchuan Yu, Han Lin, Chao Li, Harold Doty
Summary: This study investigates how and when strategic conformity impacts corporate innovative performance by integrating the institutional and optimal conformity literature. The results show that strategic conformity has an inverted U-shaped effect on innovative performance, with the relative exploitative dimension mediating this relationship.
JOURNAL OF BUSINESS RESEARCH
(2022)
Article
Engineering, Geological
Danielli de Melo Moura, Antonio Bobet
Summary: In this study, experiments were performed on gypsum specimens to investigate the influence of flaw geometry and interface properties on crack propagation. The results indicate that the interface itself plays a significant role in the formation of new cracks, and changes in interface roughness and inclination affect the coalescence patterns and incident crack angles.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Engineering, Mechanical
Yong Niu, Jin-Guo Wang, Xing-Kai Wang, Yun-Jin Hu, Jian-Zhi Zhang, Ran-Ran Zhang, Zhi-Jun Hu
Summary: In this study, the extended non-ordinary state-based peridynamics (NOSB-PD) theory is used to simulate the fracture process of rocks with pre-existing flaws. The maximum tensile stress criterion and the Mohr-Coulomb criterion are implemented to determine the types of fracture. The effects of inclination angles and ligament angles on crack initiation and coalescence modes are investigated, and the numerical results are in good agreement with previous experimental results. The fracture mechanism of flawed rocks is revealed based on the distribution characteristics of stress fields obtained by the extended NOSB-PD theory.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Article
Business
Zhaojun Han, Conghui Yu, Yanxi Li, Jinyan Shi, Yuanyuan Liu
Summary: This study draws on the relational view and the resource dependence theory to examine the impact of customer concentration on supplier financial performance. Empirical evidence from 1040 Chinese listed manufacturing firms suggests an inverted U-shaped relationship between customer concentration and supplier financial performance. This relationship is influenced by factors such as intangible assets, customer dispersion, and industry competition.
INDUSTRIAL MARKETING MANAGEMENT
(2023)
Article
Chemistry, Analytical
Gongli Xiao, Yanping Xu, Hongyan Yang, Zetao Ou, Jianyun Chen, Haiou Li, Xingpeng Liu, Lizhen Zeng, Jianqing Li
Summary: This study introduces a tunable plasmonic sensor with Fano resonators, achieving a high sensitivity refractive index sensor through optimized structural parameters.
Article
Management
Ying Ying, Xingchen Meng
Summary: Digital transformation is an increasingly critical issue in the digital era. This paper expands research on the drivers of corporate digital transformation and examines executive contextual factors. Using text mining and a nonlinear model, the study analyzes the impact of returnee executives on corporate digital transformation in Chinese A-share listed companies from 2012 to 2021. The findings show an inverted U-shaped, nonlinear relationship between returnee executives and company digital transformation, with financial restrictions strengthening this association and financial position weakening it.
TECHNOLOGY ANALYSIS & STRATEGIC MANAGEMENT
(2023)
Article
Engineering, Geological
Weizhang Liang, Yuksel Asli Sari, Guoyan Zhao, Stephen D. McKinnon, Hao Wu
Summary: This study proposes five ensemble classifiers to estimate the probability of short-term rockburst risk, which were verified using 91 rockburst samples. The effects of different indicator combinations on prediction results were analyzed, and the proposed ensemble classifiers outperformed individual learners in overall performance, with accuracy-based and F-1-based classifiers being preferred for predicting short-term rockburst risk.
ROCK MECHANICS AND ROCK ENGINEERING
(2021)
Article
Metallurgy & Metallurgical Engineering
Hao Wu, Bing Dai, Li Cheng, Rong Lu, Guoyan Zhao, Weizhang Liang
Summary: This study investigated the mechanical properties and energy evolution of sandstone samples with and without circular cavities under impact loading tests. The presence of a cavity weakened the dynamic compressive strength and affected crack initiation and rock fragmentation.
MINING METALLURGY & EXPLORATION
(2021)
Article
Mathematics
Peng Xiao, Diyuan Li, Guoyan Zhao, Meng Liu
Summary: The stress field, fracture process zone (FPZ), and crack propagation velocity of SCB specimen during the fracture process of rock specimens were analyzed using experimental and numerical methods. The heart-shaped stress concentration zones formed near the peak load points are identified as FPZ, which forms before macro fracture occurs. The crack propagation process includes two stages: rapid crack initial development stage and final crack splitting stage.
Article
Geochemistry & Geophysics
Qingliang Chang, Xingjie Yao, Chongliang Yuan, Qiang Leng, Hao Wu
Summary: When the coal seam floor contains a confined aquifer, water inrush disasters are highly likely to occur. The failure behavior of the coal seam floor in the paste filling working face can be assessed through a theoretical model and numerical analysis, with the filling interval and long-term strength of the filling body having significant impacts on the floor failure depth, stress and displacement distributions, and plastic zone.
Article
Chemistry, Analytical
Ju Ma, Shuang Wu, Yuan Zhao, Guoyan Zhao
Summary: Precise stochastic approaches can quantitatively calculate source uncertainties and eliminate the influence of anisotropy on moment tensor inversion. Results show that anisotropy and noise have a minimal effect on fault plane rotation for a pure shear source. Complex sources are more sensitive to velocity models and full moment tensor solutions exhibit larger fault plane rotation than double couple solutions. Collaborative inversion improves fault plane solution accuracy and reduces spurious components.
Article
Green & Sustainable Science & Technology
Yang Li, Guoyan Zhao, Pan Wu, Ju Qiu
Summary: This research explores methods to evaluate the green mining performance of underground gold mines and proposes a solution methodology for performance evaluation. The empirical study results show the gap between ordinary mines and green mines, providing guidance for mine improvement.
Article
Mathematics
Yuan Zhao, Guoyan Zhao, Jing Zhou, Xin Cai, Ju Ma
Summary: This study proposes a method for determining the parameters of the brittle-ductile transition model in inclined backfilled stopes and establishes a model to simulate the mining process of ore bodies with varying depths. The results show that mining-induced stress will transfer to upper stopes and the stratum below the deepest stope, and the range and influence of mining-induced stress will increase with deep mining.
Article
Mathematics
Guoyan Zhao, Meng Wang, Weizhang Liang
Summary: This study used a sparrow search algorithm to improve the predictive performance of traditional backpropagation neural network, Elman neural network, and support vector regression models for predicting the thickness of an excavation damaged zone. The results showed that the sparrow search algorithm-backpropagation neural network model had the best comprehensive prediction performance.
Article
Green & Sustainable Science & Technology
Pan Wu, Guoyan Zhao, Yang Li
Summary: This research introduces a novel integrated decision support model for the mining industry to analyze environmental factors and determine development strategies. The model applies SWOT analysis and PEST analysis to evaluate internal and external factors influencing green mining. The study concludes that grasping the trend of green development and improving the protection and exploitation of mineral resources is the optimal strategy.
Article
Mathematics
Peng Xiao, Guoyan Zhao, Huanxin Liu
Summary: This paper simulates the fracture process of granite discs under different loading configurations using a coupled finite-discrete element method. The results show that the maximum tensile stress value is located within 18 mm of the vertical range of the disc center under different loading configurations. The small diameter rods loading results in invalid tensile strength, while flat platen loading and curved jaws loading can obtain valid tensile strength. The error of small diameter rods loading is 13%, while the errors of flat platen loading and curved jaws loading are both 1%. Curved jaws loading is the most suitable method for measuring the tensile strength of brittle materials.
Article
Mathematics
Ying Chen, Qi Da, Weizhang Liang, Peng Xiao, Bing Dai, Guoyan Zhao
Summary: The evaluation of rockburst damage potential is crucial for rockburst risk management and personnel safety. This study proposes a bagged ensemble of Gaussian process classifiers to assess rockburst damage potential with an imbalanced dataset, and improves the model performance by integrating data preprocessing and under-sampling technique. The empirical results demonstrate the feasibility of this method.
Article
Green & Sustainable Science & Technology
Zaihai Wu, Zhaojun Qi, Yunpeng Kou, Zheng Li, Guoyan Zhao, Weizhang Liang
Summary: This study proposes an extended set pair analysis (SPA) method for evaluating the wear risk of backfill pipeline. By establishing an evaluation index system, obtaining subjective and objective weights, and extending the classical SPA, the wear risk of backfill pipeline can be comprehensively evaluated from both the risk level and complexity perspectives.
Article
Mathematics
Xiaoyan Luo, Guoyan Zhao, Peng Xiao, Wengang Zhao
Summary: The Brazilian disc test with cracks of different angles was analyzed using a hybrid finite-discrete element method. The results showed that the crack angle has a significant effect on the failure mode of the disc, transitioning from splitting into two parts to splitting into four parts as the crack angle increases from 0 degrees to 90 degrees.
Article
Chemistry, Multidisciplinary
Zheng Li, Weizhang Liang, Guoyan Zhao
Summary: This study proposes a novel multicriteria decision-making method to solve rockburst hazard evaluation problems and determine the hazard levels of mines under uncertain circumstances. The method adopts interval-valued fuzzy numbers to express initial indicator information, extends the decision-making trial and evaluation laboratory and entropy methods with interval-valued fuzzy numbers to determine fuzzy indicator weights comprehensively, and extends the complex proportional assessment approach with interval-valued fuzzy numbers to determine the rockburst hazard level. The proposed method is reliable for rockburst hazard evaluation in deep mining engineering, as validated in the case study of the Jiaojia gold mine.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Civil
Hao Wu, Dan Ma, A. J. S. Spearing, Guoyan Zhao
Summary: Understanding the failure phenomena and mechanisms of stress regime on tunnels is critical, as hazardous failure phenomena frequently occur in deep hardrock tunnels. This study systematically investigated the mechanical behavior of rock specimens with different numbers of openings under uniaxial compression, revealing the significant impact of the number of openings on the weakening effect of rock mechanical properties. The crack evolution process in specimens with openings includes tensile cracks, spalling cracks, and shear cracks, and the crack initiation mechanism can be fully explained based on the stress distribution law around the opening.
GEOMECHANICS AND ENGINEERING
(2021)
