SIMULATION RESEARCH ON GEAR CRACK FAULT BASED ON ADAMS by ZHANG YongXiang, TU Hu, LU Jie, ZHU DanChen, ZHAO Lei

“…In order to study the variation law of gear crack fault vibration signal under different conditions,the gear crack fault was simulated based on the characteristic of flexible body in ADAMS,and the fully flexible gearbox models with different degrees of gear crack fault were established.Crack depth,position of measuring points,input speed and load torque were analyzed on their effects to vibration signal of the gearbox.The results show that the deeper the crack,the closer the position of the measuring point to the crack failure source,the larger the input speed and load torque,the greater the impact and amplitude of the vibration signal,and the amplitude of the vertical acceleration signal is larger than that of the axial acceleration signal.The analysis results of the transmission characteristics of the system show that the transmission law and frequency distribution of the vibration signal are basically consistent with the results of the variation law of vibration signal of different measuring points,and the simulation results are verified by hammering experiments.The research results have a certain reference value for the simulation and experimental research of gear crack fault.…”
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Endogenous Instability in Credit-Constrained Emerging Economies with Leontief Technology by Cristiana Mammana, Elisabetta Michetti

“…Using bifurcation and stability analysis, we describe the properties of the system attractors, we assess the plausibility for complex dynamics and, we find out that border collision bifurcations can emerge due to the fact that the state space is piecewise smooth. …”
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Microbiome interactions and their ecological implications at the Salton Sea by H Freund*, M Maltz*, M Swenson, T Topacio, V Montellano, W Porter, E Aronson

“…Such knowledge could help inform regulatory measures aimed at restoring the health of the Sea's human and ecological systems.…”
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Crises et transformations du modèle social-démocrate suédois by Jean-François Vidal

“…We conclude that the severe financial crisis of 1991-1992 that followed bank deregulation played a more significant role than did the erosion of the neo-corporatist collective bargaining system, the expansion of the welfare state, or the inadequacy of the specialization of the country’s exports. …”
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Distributed Model Predictive Control for Platooning of Heterogeneous Vehicles with Multiple Constraints and Communication Delays by Maode Yan, Wenrui Ma, Lei Zuo, Panpan Yang

“…Furthermore, the feasibility and stability of the proposed vehicle platoon control system are strictly analyzed. Finally, numerical simulation and experiment with TurtleBot3 mobile robots are provided to validate the effectiveness of proposed approaches.…”
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Design and Processing of Communication and Navigation Integrated Signal Based on LEO Satellite by Binghong LIU, Yafei ZHAO, Mugen PENG, Xiangtian ZHAO, Huiqi FENG

“…The integration of communication and navigation is an important direction in modern satellite communication and navigation fields.The advancement of low earth orbit (LEO) mega-constellations provides the abundant load, link and terminal resources, as well as the powerful communication coverage and information transmission capabilities.Moreover, together with the fast-changing geometric configuration and strong power, the LEO satellites can complement, backup, and enhance the existing navigation systems to provide communication and navigation services with broader coverage, higher precision and reliability.In the LEO satellite-enabled communication and navigation-integrated system, the design of the transmitted signals and the processing of the received signals are crucial for achieving efficient communication and high-precision navigation.To this end, the evolution process of the communication and navigation fusion was first outlined.Then, it focused on the design of transmitting signals and the processing of receiving signals, the relevant schemes included the layout of the frame structure and the receiver were emphasized, respectively.Finally, the challenges and potential solutions that lie ahead in the future were explored.…”
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A Novel STAT3 Gene Mutation Related Hyper-IgE Syndrome Misdiagnosed as Hidradenitis Suppurativa by Pragya Shrestha, Geetika Sabharwal, Gisoo Ghaffari

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Solving “Antenna Array Thinning Problem” Using Genetic Algorithm by Rajashree Jain, G. S. Mani

“…Thinning involves reducing total number of active elements in an antenna array without causing major degradation in system performance. Dynamic thinning is the process of achieving this under real-time conditions. …”
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Bifurcation Analysis and Control of a Differential-Algebraic Predator-Prey Model with Allee Effect and Time Delay by Xue Zhang, Qing-ling Zhang

“…Moreover, a state delayed feedback control method, which can be implemented by adjusting the harvesting effort for biological populations, is proposed to drive the differential-algebraic system to a steady state. Finally, by using Matlab software, numerical simulations illustrate the effectiveness of the results.…”
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A Theoretical Framework for Interrogating the Integration of Artificial Intelligence in Education by Tarisayi Kudzayi Savious

“…The theoretical lens is composed of the Technology-Organization-Environment (TOE) framework, Technology Acceptance Model, Technological Pedagogical Content Knowledge, Socio-technical system theory, and Diffusion of Innovation theory. …”
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Using modern technologies in the educational process of the college by D. K. Smolyakova

“…College of services and Commerce of Sevastopol has an unrealized potential for improving the system of using modern educational and educational technologies in the educational process. …”
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The functional structure of the academic year at higher education institutions in the United States of America and at South African technikons, with particular reference to the com... by Denys Rhoodie

“…Legitimacy, quality assurance and resources are the three main components of an educational system. Time is a vital resource as well. The major thrust of the study was to ascertain at first-hand how the American academic calendar works in practice and whether it offers distinct advantages that could practically and in accordance with current legislation and policy be introduced in the academic calendar of South African technikons in general, and communications programmes in particular. …”
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Influence of school environment in the teaching and learning of physical education by Muhamad Zahıdı, Rahmad Samad, Syed Kamaruzaman Bin Syed Alı

“…Conclusively, the constraint factors in school environment have direct relationship with the field condition, Physical Education equipments, funding and administration system.…”
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In Vitro Comparison of the Internal Ribosomal Entry Site Activity from Rodent Hepacivirus and Pegivirus and Construction of Pseudoparticles by Stuart Sims, Kevin Michaelsen, Sara Burkhard, Cornel Fraefel

“…Focusing on RHV, we further pseudotyped lentivirus with RHV and showed cell surface expression of the envelope proteins and transduction of murine hepatocytes and we then constructed full-length RHV and RPgV replicons with reporter genes. Using the replicon system, we show that the RHV NS3-4A protease cleaves a mitochondrial antiviral signaling protein reporter. …”
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Les nouvelles formes de l’agir politique en perspective, France-Espagne by Serge Buj

“…Are they one manifestation among others of a movement of crisis and renovation of the political party system or are they symptomatic of a period of great global ideological reclassification? …”
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Collaborative Task Offloading Strategy of UAV Cluster Using Improved Genetic Algorithm in Mobile Edge Computing by Hong Wang

“…Then, an objective function and related constraints are put forward to minimize the time delay and energy consumption by analysis of those in the communication and computing process in the system while considering many factors. Then, the improved genetic algorithm is introduced to solve the optimization problem, obtaining the optimal collaborative task offloading strategy. …”
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Leveraging an open access platform to provide organizational value in clinical environments by Aida Marissa Smith, Alexia Estabrook, Mary Hyde, Michele Matucheski, Eleanor Shanklin Truex

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Fault Diagnosis of Water Lubricated Stern Bearing based on BP Neural Network by Liang Feng, Zhang Dandan, Zhang Ronghua

“…The water lubricated stern bearing is a special bearings which widely used in ships and other water vessels sail propulsion system,because of its work environment is of great uncertainty,the product is prone to various of failures,once the failure happens,it will directly affect the ship safe navigation and economic benefits. …”
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Core Trends in Engineering Education: Five Years of the “Synergy” International Conference by M. F. Galikhanov, S. V. Barabanova, A. A. Kaibiyainen

“…The article outlines the broad issues of the conference, related to interdisciplinarity, new standards and technologies for engineering education, digital educational environment and online technologies, interaction between engineering education and high-tech business and industry, the models of digital competencies and mechanisms to independently certify them, training of highly qualified personnel, professional education within the school-university-enterprise system, and many other relevant aspects of contemporary engineering education.…”
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Detection and Analysis of Tooth Profile Deviation of Cycloidal Gear based on Projection Method by Mo Jingyu, Luo Shanming, Mao Lingxia, Fan Jianming

“…Based on the optical image measurement system and the Sobel edge detection algorithm,the complete tooth profile image and the actual tooth profile edge point coordinate of the cycloid gear are obtained. …”
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