Cooperative Communication in Cognitive Radio Networks under Asymmetric Information: A Contract-Theory Based Approach by Nan Zhao, Minghu Wu, Wei Xiong, Cong Liu

“…The optimal contract design under both symmetric information and asymmetric information is presented based on contract theory. The contract-theoretic model for ability discrimination relay selection is formulated as an optimization problem to maximize the source's utility. …”
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Stability Analysis and Instability Time Prediction of Tunnel Roofs in a Karst Region Based on Catastrophe Theory by Yang Zou, Qianlong Tang, Limin Peng

“…The calculation formula for the safety thickness of the roof of the karst tunnel derived from the theory of sudden change demonstrates feasibility and high accuracy in practical engineering applications. …”
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In-vitro comparative thermo-chemical aging and penetration analyses of bioactive glass-based dental resin infiltrates by Syed Zubairuddin Ahmed, Abdul Samad Khan, Maram Alshehri, Fatimah Alsebaa, Fadak Almutawah, Moayad Mohammed Aljeshi, Asma Tufail Shah, Budi Aslinie Md Sabri, Sultan Akhtar, Mohamed Ibrahim Abu Hassan

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From activity to learning: using cultural historical activity theory to model school library programmes and practices by E.M. Meyers

“…This paper focuses on the activity theoretic concepts of 'contradictions' and 'expansive learning' as they relate to the development of best practices. …”
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Composite Fault Diagnosis for Rotating Machinery of Large Units Based on Evidence Theory and Multi-Information Fusion by Naiquang Su, Xiao Li, Qinghua Zhang, Zhiqiang Huo

“…This paper proposes a composite faults diagnosis method for rotating machinery of the large unit based on evidence theory and multi-information fusion. The evidence theory and multi-information fusion method mainly deal with multisource information and conflict information, synthesize multiple uncertain information, and obtain synthetic information from multiple data sources. …”
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Epistemological and empirical challenges of Niklas Luhmann’s systems theory: an interview with professors Álvaro Pires and Lukas Sosoe by Álvaro Pires, Lukas Sosoe, Lucas Fucci Amato, Marco Antonio Loschiavo Leme de Barros, Gabriel Ferreira da Fonseca

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The Sustainability of Knowledge-Sharing Behavior Based on the Theory of Planned Behavior in Q&A Social Network Community by Xin Feng, Lijie Wang, Yue Yan, Qi Zhang, Liming Sun, Jiangfei Chen, Ye Wu

“…The research results show that the theoretical model of planned behavior has strong explanatory power and self-efficacy and material rewards have a positive effect on knowledge-sharing attitudes. …”
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High-Efficiency Dynamic Modeling of a Helical Spring Element Based on the Geometrically Exact Beam Theory by Jian Zhang, Zhaohui Qi, Gang Wang, Shudong Guo

“…This paper presents a modeling study of the dynamics of a helical spring element with variable pitch and radius considering both the static stiffness and dynamic response by using the geometrically exact beam theory. The geometrically exact beam theory based on the Euler–Bernoulli beam hypothesis is described, of which the shear deformations are ignored. …”
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Retracted: Simulation of Subject Coordination for a Smart Campus Based on Complex Network and Evolutionary Game Theory by Journal of Function Spaces

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Evaluation of highway debris flow hazard based on geomorphic evolution theory coupled with material response rate by Na He, Ruze Han, Guisheng Hu, Zhiquan Yang, Linjuan Xu, Filip Gurkalo

“…It utilizes geomorphic evolution theory and establishes a regional risk assessment matrix for debris flow by combining information about gullies and source sensitivity. …”
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SOME ADDITIONS TO PRACTICE AND THEORY OF PHYSICAL EDUCATION TEACHING IN NON-SPORTS ORIENTED HIGHER EDUCATION INSTITUTION by Sergey V. Kaznacheev, Olga V. Lopatina, Zhanna Yu. Bogolyubova, Vlail P. Kaznacheev

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Stationary BTZ space-time in Ricci-inverse and $$f({\mathcal {R}})$$ f ( R ) gravity theories by Faizuddin Ahmed, Abdelmalek Bouzenada

“…Abstract In this paper, we explore a stationary BTZ space-time within the framework of modified gravity theory, specifically focusing on Ricci-inverse gravity. …”
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A set theory based fuzzy fs/QCA: a new tool for sensory analysis of foods by JK Pallavi

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SAR Image Simulation for Crater Terrain Using Formation Theory-Based Modeling and Hybrid Ray-Tracing by Ya-Ting Zhou, Yongsheng Zhou, Qiang Yin, Fei Ma, Fan Zhang

“…The approach incorporates crater formation theory to describe the relationship between various explosion parameters and craters. …”
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The impact of government subsidies on microplastic pollution control in mariculture: an evolutionary game theory analysis in Qingdao, China by Haiming Song, Xinting Wang, Xiaomeng Huan, Lin Yang

“…It then proceeds to examine the government’s strategy for managing mariculture microplastic pollution through game theory and simulation analysis. The main findings obtained are as follows. (1) The management of mariculture microplastic pollution can be improved on both the supply chain and market aspects by implementing subsidies. …”
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The unified theory of acceptance and use of DingTalk for educational purposes in China: an extended structural equation model by Yukun Hou, Zhonggen Yu

“…This study aimed to extend the Unified Theory of Acceptance and Use of Technology (UTAUT) by incorporating new constructs and examining the factors that affect users’ behavioral intention and use behavior of DingTalk. …”
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Implementation of Vygotsky's Theory of Social Constructivism in Learning Pancasila Education in Elementary Schools As Strengthening Cooperation Attitudes by Ressi Kartika Dewi, Munawir Yusuf, Subagya Subagya

“…This study aims to reveal the implementation of Vygotsky's theory of social constructivism in learning Pancasila education to strengthen students' cooperative attitudes. …”
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Corresponding Member of the Russian Academy of Sciences V.A. Kremenyuk and his contribution to the theory of the International Relations by V. I. Zvolinsky

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Investigation of Fracture Width Change under Closure Pressure in Unconventional Reservoir Based on the Hertz Contact Theory by Lifei Dong, Di Wang, Fengxia Li, Xinye Fu, Miao Wang

“…Therefore, it is significant to develop the theoretical model to predict the variation. In this work, the mathematical model for the propping behavior of proppants in the fracture under closure pressure is established based on the Hertz contact theory. …”
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APPLICATION OF THE REFLECTIVE LEARNING THEORY IN DISCLOSURE OF STUDENT ACHIEVEMENTS WHEN LEARNING GRAMMAR II IN IAIN LANGSA. by Muhammad Yusuf Hasbalnikistan, Rita Mahriza, Muslem

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