STUDY ON THE ACTIVE VIBRATION SUPPRESSION METHOD OF HYDROSTATIC SLIDE OF MACHINE TOOL BASED ON MR DAMPER by ZHANG ZhongKui, GAO Feng, LI Yan, YAN YangYang

“…The dynamic behaviors of the hydrostatic slide is changed instantaneously and abruptly during the start-stop, acceleration and deceleration, so magnetorheological（MR） damper is used to suppress tangential vibration of hydrostatic slide. A single-degree-of-freedom vibration model is established, and the dynamic response of the system are studied by the incremental harmonic balance method（IHBM） with arc length as control increment. …”
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Configuration Synthesis of Decoupled Parallel Mechanical Leg of Walking Machining Robot by Jiali Chen, Yong Xu, Wencai Liu

“…Finally, the compound simplification is carried out among single-degree-of-freedom joint pairs of mechanical leg, and the simplified motion transformation matrix is analyzed. …”
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Influence of Parameter on Dynamic Load and Load Sharing Characteristic of Split Torque-combine Power Gear Transmission System by He Lin, Sanmin Wang

“…The Gaussian elimination technique is introduced to deal with the elimination of extra rigid body displacements， ultimately， the dynamics equations are reduced to be 9 degrees of freedom. By applying the fourth order Runge-Kutta algorithm to solve the system dimensionless dynamical equations， dynamic load characteristic is analyzed under the excitations of backlash， general transmission error and time-varying mesh stiffness. …”
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Adaptive Fuzzy Sliding Mode Tracking Control of Uncertain Underactuated Nonlinear Systems: A Comparative Study by Faten Baklouti, Sinda Aloui, Abdessattar Chaari

“…The trajectory tracking of underactuated nonlinear system with two degrees of freedom is tackled by an adaptive fuzzy hierarchical sliding mode controller. …”
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THE PROBLEM OF COMPLIANCE OF ARTIFICIAL INTELLIGENCE WITH SUBSTANTIAL VALUES OF HUMAN by Evgeniya B. Belikova

“…A number of values ​​(life, freedom of choice, human identity, subjectivity, the possibility of creativity) do not experience real threats, but in the context of the spread of AI they are beginning to be valued higher. …”
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Research of the Influence of Tooth Surface Wear and Bearing Clearance on Gear Dynamics by Kaida Wang, Ruiliang Zhang, Tie Wang, Yatian Zhou, Fei Wang

“…Tooth surface wear and bearing clearance are important factors affecting gear system dynamics, in order to reveal the influence of tooth wears and bearing clearance on the dynamics of gear system, a six-degree-of-freedom bending-torsion coupled model is established, which takes into account the tooth surface wear, bearing clearance, friction and backlash. …”
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A class of ghost-free theories in symmetric teleparallel geometry by Antonio G. Bello-Morales, Jose Beltrán Jiménez, Alejandro Jiménez Cano, Tomi S. Koivisto, Antonio L. Maroto

“…We explicitly show their equivalence to a family of theories with an extra scalar field plus a global degree of freedom and how Horndeski theories and healthy couplings to matter fields can be readily accommodated.…”
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STUDY ON THE NON-LINEAR VIBRATION IN THE HYDRAULIC SCREW DOWN VERTICAL SYSTEM FOR ROLLING MILL by ZHANG RuiCheng, MA YinZhou, GAO Zheng, WEN JiaHe

“…For vertical vibration systems tend to ignore the influence of hydraulic screw down system in the rolling mill,two degrees of freedom hydraulic screw down vertical vibration system model was established based on viscous damping between the hydraulic cylinder and the frame,nonlinear stiffness between the rolling interface. …”
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Research on inverse solution of shotcrete manipulators based on an improved bee colony algorithm by CHEN Hetian, CHENG Wenming, DU Run, ZHANG Zhipeng

“…ObjectiveThe shotcrete manipulator is an eight-degree-of-freedom redundant manipulator with prismatic joints, and its inverse kinematics is difficult to solve. …”
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Singularity Analysis For 3-PPR Parallel Spherical Mechanism based on Screw Theory by Zhao Ruijie, Song Shengtao, Li Ruiqin, Li Dahai, Zhao Jianwen

“…A new type of 3-PPR spherical parallel mechanism is proposed.Due to the mobile pair special trajectory in each branch chain,the mobile pair can be equivalent conversion for revolute pair.Based on screw theory,each branched chain motion screw system is given.The mobility of this mechanism is analyzed firstly with the amendment G-K formula,The numbers of degrees of freedom is obtained.Secondly,by using the solution method of inverse spiral system and matrix theory knowledge,under the premise of Jacobian matrix of the 3-PPR spherical parallel mechanism is solved,the rank of matrix is analyzed,the singular configuration conditions and the type of singular configuration of the mechanism are obtained.In the end,according to the forward kinematics solution and interference condition,the Matlab software is used to draw up the stable working space.Research shows that a 3-PPR parallel spherical mechanism singularity is less,and easy to avoid,has good application prospect.…”
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Research Progress of Synthesis and Modification Methods Based on Dynamic Substructures by Jintao Su, Bangdong Wang

“…In the aspect of substructure synthesis method, the modal reduction of substructures, two methods of classical substructure synthesis, mechanical impedance method, singular value decomposition method, rigidity-flexibility equivalence, and transformation of degree of freedom are analyzed. The advantages and disadvantages of the above methods are discussed. …”
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DESIGN AND DYNAMIC ANALYSIS OF A NEW CHAOTIC VIBRATING SCREEN by WANG ChengJun, ZHU Tao

“…A new type of chaotic vibrating screen with one redundant degree of freedom is developed, the dynamic model of the new chaotic vibrating screen is established, the vibration differential equation of the vibrating screen is obtained by the Lagrange method, and its dynamic characteristic diagram is obtained through simulink simulation analysis. …”
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Realization of a spin-1/2 Kondo necklace model with magnetic field-induced coupling switch by Hironori Yamaguchi, Yu Tominaga, Takanori Kida, Koji Araki, Takashi Kawakami, Yoshiki Iwasaki, Kenta Kimura, Masayuki Hagiwara

“…The theoretical Kondo necklace model, which simplifies the Kondo lattice model by focusing on spin degrees of freedom, provides a valuable framework for understanding spin-related quantum phenomena. …”
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Policy change or tactical retreat? by Wishes Tendayi Mututwa, Brenda Mututwa, Mlondolozi Ndlovu

“… This study explores Zimbabwe’s media legislation, the Freedom of Information Act (FIA), which was brought into effect in 2020 to replace previous repressive legislation, the 2002 Access to Information and Protection of Privacy Act (AIPPA). …”
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Adaptive Fault-Tolerant Tracking Control of Nonaffine Nonlinear Systems with Actuator Failure by Hongcheng Zhou, Dezhi Xu, Daobo Wang, Le Ge

“…Finally, the proposed approach is verified using a three-degree-of-freedom simulation of a typical fighter aircraft and the significantly improved system response demonstrates the practical potential of the theoretic results obtained.…”
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Debatten i debatten by Jenny Eklöf

“…The debate was also colored by its contemporary context; by other ongoing science-related controversies, such as that of nuclear power, and not least by the emergence of new journalistic ideals and broader public discussions about academic freedom and scientists’ communicative obligations. …”
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NUMERICAL INVESTIGATIONS ON THE DYNAMIC BEHAVIOUR OF A 2-DOF AIRFOIL WITH APPLICATION IN ENERGY HARVESTING SYSTEM by Tomasz HANISZEWSKI, Damian GĄSKA, Jerzy MARGIELEWICZ, Tadeusz OPASIAK

“…This article presents the basic airfoil model with two degrees of freedom - the semi-rigid model, where its forced vibrations were considered, and the exciting force is the aerodynamic force, including its periodic changes, that is, gusts. …”
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Creative psychologists: reflections on teaching and pedagogic practice inspired by an arts-based Away Day by Aspasia Paltoglou, Jeremy Hopper

“…In summary, this Think Piece is a reflection on the authors’ creative selves, and the role of expressive freedom and creativity in relation to teaching psychology in higher education.    …”
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Kinematic Analysis of a 3-DOF Parallel Polishing Manipulator by Bao Xinmian, Wang Xuelei, Zhang Weitao, Wang Lu, Zhao Dongjie

“…In order to verify the kinematic performance of the manipulator, firstly, the mechanism characteristics are described, and the degree of freedom of the mechanism is analyzed based on the spiral theory. …”
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EGZISTENCINIS HUMANIZMAS IR FILOSOFINĖ POETIKA by Tomas Kačerauskas

“…The human being of Sartre is a project of the freedom, the creative whole of the past and the future. …”
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