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Thematische Bibliographien / Statics and dynamics parameters / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „Statics and dynamics parameters“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 17. Februar 2022

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1

Pierrot, F., C. Reynaud, and A. Fournier. "DELTA: a simple and efficient parallel robot." Robotica 8, no. 2 (1990): 105–9. http://dx.doi.org/10.1017/s0263574700007669.

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SummaryThe DELTA parallel robot, designed by an EPFL (Ecole Polytechnique Fédérale de Lausanne) research team, is a mechanical structure which has the advantage of parallel robots and ease of serial robots modeling. This paper presents solutions for a complete modeling of the DELTA parallel robot (direct and inverse kinematics, inverse statics, inverse dynamics), with few arithmetic and trigonometric operations. Our method is based on a satisfactory choice of kinematic parameters and on a few restricting hypotheses for the static and dynamic models. We give some details of each model, we prese

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Awrejcewicz, J., V. A. Krysko, and I. V. Kravtsova. "Dynamics and statics of flexible axially symmetric shallow shells." Mathematical Problems in Engineering 2006 (2006): 1–25. http://dx.doi.org/10.1155/mpe/2006/35672.

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In this work, we propose the method for the investigation of stochastic vibrations of deterministic mechanical systems represented by axially symmetric spherical shells. These structure members are widely used as sensitive elements of pressure measuring devices in various branches of measuring and control industry, machine design, and so forth. The proposed method can be easily extended for the investigation of shallow spherical shells, goffer-type membranes, and so on. The so-called charts of control parameters for a shell subjected to a transversal uniformly distributed and local harmonic lo

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Arnold, Lutz G., and Wolfgang Kornprobst. "COMPARATIVE STATICS AND DYNAMICS OF THE ROMER R&D GROWTH MODEL WITH QUALITY UPGRADING." Macroeconomic Dynamics 12, no. 5 (2008): 702–16. http://dx.doi.org/10.1017/s1365100508070375.

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This paper replaces increasing product variety with quality upgrading in the Romer model [Romer, Paul M., Journal of Political Economy 98 (1990), S71–S102]. We show that the range of parameters for which a steady state exists can be divided into two subspaces with well-behaved comparative statics and saddle-point dynamics in one subspace, but with “perverse” comparative-statics properties and either equilibrium indeterminacy or instability in the other subspace. These results for the closed economy can also be used to characterize the dynamics of the M-country open-economy version of the model

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Voronin, Anatolii, and Olga Gunko. "METHODS OF COMPARATIVE STATICS AND DYNAMICS IN THE THEORY OF ECONOMIC CYCLES." Innovative Technologies and Scientific Solutions for Industries, no. 2 (16) (July 6, 2021): 46–53. http://dx.doi.org/10.30837/itssi.2021.16.046.

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The subject of this work is the problem of describing the dynamic behavior of the price in the market of one product. The typical balance of interaction of supply and demand functions depending on the price is considered. The dynamic model of price evolution is based on the assumption that the demand function at a given time depends on the supply function at all previous points in time, i.e. there is a process with an aftereffect. The core of the integral transformation is a characteristic of the second order, which can initiate periodic regimes in price variables. The aim of the work is to sy

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Zhu, Qidan, Peng Lu, Zhibo Yang, Xun Ji, and Yu Han. "Multi-Parameter Optimization for the Wet Steam Accumulator of a Steam-Powered Catapult." Energies 12, no. 2 (2019): 234. http://dx.doi.org/10.3390/en12020234.

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Selecting the optimal parameters for wet steam accumulator of steam-powered catapult is an important task, due to launching safety. There is no literature on the topic of the parameters optimization for wet steam accumulator of steam-powered catapult. The genetic algorithm (GA) was used to determine the optimal wet steam accumulator in this article. The sink-off-the-bow (SOB), angle of attack and rate of climb were used to create the objective function. The multi-objective optimization can be converted to single-objective optimization, which is subject to angle of attack and rate of climb. Mor

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Sun, Jian Gang, Tie Jun Li, Xue Sen Zhang, and Mei Ying Chen. "The Research on the Dynamics of High-Speed Friction and Wear Test System in Mechanical Engineering." Advanced Materials Research 644 (January 2013): 326–32. http://dx.doi.org/10.4028/www.scientific.net/amr.644.326.

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By researching the dynamics of high speed friction and wear test system, establish the statics and dynamics model of high-speed dial and get the equation of motion of turntable scrapers state. Using Ansys Workbench software platform analysis the order modal of the turntable, get the kinetic parameters of the system. Some suggestion and methods are proposed on avoiding vibration of turntable system.

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Nassar, H., Y. Y. Chen, and G. L. Huang. "A degenerate polar lattice for cloaking in full two-dimensional elastodynamics and statics." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 474, no. 2219 (2018): 20180523. http://dx.doi.org/10.1098/rspa.2018.0523.

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A lattice design of a cloak for full two-dimensional elasticity is suggested when the background continuum is isotropic with Lamé parameters (λ, μ ) satisfying μ ≤ λ. The lattice is polar in the sense that it elastically resists rotations; and is degenerate meaning it admits a stressless collapse mechanism. These characteristics are attained through the use of appropriately distributed restoring torques in conjunction with hinge-like spring-mass contacts. Thus, the lattice is proven to exhibit a rank-3 elasticity tensor lacking the minor symmetries. Accordingly, it rigorously adheres to the fo

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Zhou, Zhi, Xing Man Yang, Zhi Ming Zhao, and Gang Chen. "Strength Analysis of Towing Extending-Retracting Equipment Based on Dynamics and Statics." Advanced Materials Research 902 (February 2014): 173–78. http://dx.doi.org/10.4028/www.scientific.net/amr.902.173.

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With the increasing development of ocean engineering, towing extending-retracting equipment used widely is the basic platform realizing the engineer value of towfish. In this paper, the dynamic model of the equipment in rough sea condition is created based on Adams, and the operating parameters are determined by maximum dynamic load, as the input data of static model of the equipment. Then the static models of capture unit, swing arm and base frame are created to calculate the strength respectively. Lastly, from the results, the valuable suggestions are put forward to provide valuable referenc

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Li, Ying Ge, Dian Cai Geng, Fa Hu Zhang, and Dong Xing Du. "Proper Index of Foam Statics Characteristics on Predicting Foam Dynamics Behavior in Porous Media." Key Engineering Materials 561 (July 2013): 411–16. http://dx.doi.org/10.4028/www.scientific.net/kem.561.411.

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Proper foam statics index can give essential indications on foam dynamic behavior in porous media. In this paper, the statics characteristics are investigated through air-flow method for foam generated with Sodium Dodecyl Sulfate (SDS) surfactant. Parameters of foam height, foam half period time are recorded for various gas phases, surfactant concentrations and injecting gas flow rate, and foam morphology are also visually monitored. It is found the N2 generated foam has better characteristics on foam height, while poorer characteristics on foam half-time period compared to air and CO2 foam. W

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AKSENOVA, KSENIYA A., DMITRIY A. BELYAEV, and SERGEY A. KUTOMANOV. "REGULAR MECHANISMS FOR THE METAPHORIZATION OF QUANTITATIVE MEANINGS IN ITALIAN AND FRENCH: COMPARATIVE ANALYTICS." Cherepovets State University Bulletin 4, no. 103 (2021): 7–17. http://dx.doi.org/10.23859/1994-0637-2021-4-103-1.

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The paper aims at identifying metaphorization of quantitative lexemes as a basic means to form quantifiers. The research objective is to develop a classification of qualitative parameters for the Italian and French quantifiers. In particular, a structural approach is used, based on such methods of material analysis as the comparative-typological method, contextual analysis, and the method of lexicographic definitions. The authors pay attention to the identification of qualitative parameters, a set of properties that characterizes the quantifiers under study. All identified parameters are analy

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Gurova, O. Yu, A. E. Bobrov, T. I. Romantsova, and O. V. Roik. "Metabolic abnormalities and behavioral peculiarities in patients with obesity: statics and dynamics on Orlistat therapy." Obesity and metabolism 6, no. 3 (2009): 27–38. http://dx.doi.org/10.14341/2071-8713-5242.

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Obesity causes variety of metabolic disorders, and decreases the quality of life. At the same time many people with BMI>30 kg/A possess different psychopathologic disturbances. The results of ourwork disclose high percentage of impaired carbohydrate metabolism, hyperlipidemia, and resistance to insulin in patients with obesity Besides, it was revealed that more than a half of the patients have symptoms of maladjustment, and decreased quality of life. Reduction of body w eight due to the treatment with Orlistat w as accompanied by improvement in parameters of carbohydrate and lipid metabolis

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Lin, Sheng, Jian Xu, and Chun Wang. "Synthesis and experiment of a novel parallel compliant mechanism with one translation and two rotations." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 231, no. 12 (2016): 2284–90. http://dx.doi.org/10.1177/0954406216630336.

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A novel parallel compliant mechanism with one translation and two rotations is proposed. Its stiffness matrix and force/torque performance indices are derived. The influence of temperature on the output displacement of the compliant mechanism is deduced. Structure parameters of the compliant are optimized with the force and torque performance indices as objective and the equivalent nodal thermal load as constraint condition. The statics and dynamics experiments are conducted to verify the compliant mechanism rationality.

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Mathe, Aliz, Al Cătărig, and Ilinca Moldovan. "Statics And Kinematics Of Semirigid Steel Frames Under Seismic Action." Journal of Applied Engineering Sciences 5, no. 2 (2015): 59–64. http://dx.doi.org/10.1515/jaes-2015-0022.

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Abstract Intended contribution emphasizes the statics and kinematics of semi-rigid steel frames seismically acted upon. The dynamic model of analyzed structures consists of multi degree of freedom systems with lumped masses located at floor levels. The dynamic degrees of freedom are the lateral seismically induced floor displacements. A cyclic behavior of semi-rigid beam – column connections associated with the four parameters analytical bending moment M – relative rotation θr is considered. Time history seismic analyses are performed on multi-story steel planar frames equipped with several to

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Chen, Shi Wei, and Kai Lin Jian. "Robust Optimization of Dynamic Response of Structures with Uncertain Parameters." Applied Mechanics and Materials 105-107 (September 2011): 527–31. http://dx.doi.org/10.4028/www.scientific.net/amm.105-107.527.

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On the base of traditional robust optimal design in statics, in this paper, by considering the system under the incentive force of the arbitrary time function, the dynamic response robust optimal design problem, when system dynamic response can only be calculated using numerical integration. Considering the environmental interference factors in a system, derived the expression of response with a small parameter perturbation finite element method. Through the tiny fluctuation frame system in a post and beam’s elastic modulus, realize the robust optimal design of the structural dynamic response,

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FALZARANO, JEFFREY M., STEVEN W. SHAW, and ARMIN W. TROESCH. "APPLICATION OF GLOBAL METHODS FOR ANALYZING DYNAMICAL SYSTEMS TO SHIP ROLLING MOTION AND CAPSIZING." International Journal of Bifurcation and Chaos 02, no. 01 (1992): 101–15. http://dx.doi.org/10.1142/s0218127492000100.

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Ship capsizing is a highly nonlinear dynamic phenomenon where global system behavior is dominant. However the industry standards for analysis are limited to linear dynamics or nonlinear statics. Until recently, most nonlinear dynamic analysis relied upon perturbation methods which are severely restricted both with respect to the relative size of the nonlinearity and the region of consideration in the phase space (i.e., they are usually restricted to a small local region about a single equilibrium), or on numerical studies of idealized system models. In this work, recently developed global anal

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Zeng, Fan, Jing Jun Lou, and Shi Jian Zhu. "Study on Giant Magnetostrictive Material with Design and Simulation of Displacement Magnifying Mechanism." Advanced Materials Research 675 (March 2013): 219–26. http://dx.doi.org/10.4028/www.scientific.net/amr.675.219.

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In order to make full use of advantages of giant magnetostrictive material and to improve output characteristics of giant magnetostrictive actuator, displacement magnifying mechanism is designed based on flexible hinges. The design parameter of the flexible hinges and strength of material of flexible hinges are calculated. Based on the analysis and comparison, the statics and dynamics analysis was carried on by analytic method and ANSYS12.1 software,the input stiffness, magnifying multiple and the relationship between output displacement and load are calculated,and the stress analysis shows th

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Han, Jianxin, Lei Li, Gang Jin, et al. "Qualitative Identification of the Static Pull-In and Fundamental Frequency of One-Electrode MEMS Resonators." Micromachines 9, no. 12 (2018): 614. http://dx.doi.org/10.3390/mi9120614.

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This paper attempts to qualitatively identify the static pull-in position, pull-in voltage, and fundamental frequency of one-electrode microresonators from a physical perspective. During theoretical derivation, a generalized one-degree-of-freedom (1-DOF) model in nondimensional form derived using the differential quadrature method (DQM) is first introduced and then transformed for frequency normalization. Based on the deduced formulas, the upper and lower bounds of the static pull-in position and pull-in voltage are both deduced through mathematical proof. To distinguish the monotonic and nonm

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Yang, Fu Qin, Hong Tao Zhang, Rong Zong, and De Gong Chang. "Parametric and Optimum Design of Cylinder Mechanism Based on Statics and Modal Analysis." Applied Mechanics and Materials 215-216 (November 2012): 311–14. http://dx.doi.org/10.4028/www.scientific.net/amm.215-216.311.

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Collaborative simulation on characteristic parameters of the cylinder mechanism was realized by Pro/E and AWE software. Optimum allocation about the structure parameters like wall thickness, width, diameter and speed was completed based on comprehensive consideration of static strength and stiffness and dynamic characteristics of modal. The simulation result shows that the optimization scheme was beneficial to the yield and quality of cardings which lays the foundation for further development of the cylinder mechanism.

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Kodnyanko, Vladimir, Stanislav Shatokhin, Andrey Kurzakov, and Yuri Pikalov. "Mathematical Modeling on Statics and Dynamics of Aerostatic Thrust Bearing with External Combined Throttling and Elastic Orifice Fluid Flow Regulation." Lubricants 8, no. 5 (2020): 57. http://dx.doi.org/10.3390/lubricants8050057.

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As aerostatic bearings are used in high-speed metal-cutting machines to increase machining accuracy, there is the need to improve their characteristics, including compliance, which is usually high. In practical applications, a significant reduction of bearing compliance is often necessary, sometimes down to zero and even negative values, to ensure automatic compensation of the elastic deformation in the machine technological system. A decrease in compliance leads to deterioration in the dynamic performance of the bearing, so it is necessary to develop new designs that meet the above requiremen

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Roorda, J., and B. Gracie. "Derailment of Trains." International Journal of Mechanical Engineering Education 22, no. 3 (1994): 165–76. http://dx.doi.org/10.1177/030641909402200302.

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A simple model of train derailments reduces a complex dynamic process to a recursive series of statics and geometry calculations accompanied by computation of energy dissipation by ground friction forces. A calibration of the model parameters ensures a good fit to reality. Some derailment characteristics can be predicted.

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Zhao, Long, Yifei Yan, Xiangzhen Yan, and Lei Zhao. "Structural Parameters Optimization of Elastic Cell in a Near-Bit Drilling Engineering Parameters Measurement Sub." Sensors 19, no. 15 (2019): 3343. http://dx.doi.org/10.3390/s19153343.

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The downhole engineering parameters measurement sub is a key component of the rotary steerable drilling system. To enable a measurement sub to serve reliably under downhole complex conditions, the structural parameters optimization of its key but weak elastic cell is systematically studied. First, the multiple relations among measurement sensitivities, structural stiffnesses, and strength during structural parameters design are summarized. Second, the selection of the structural parameters of the elastic cell is characterized as a multi-objective optimization model, which is solved using the n

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Kaletnіk, Grigory, and Oleh Tsurkan. "STATIC CONDITIONS OF A LOOSE ENVIRONMENT IN SOLVING THE TASKS OF ITS VIBROMOVEMENT." Vibrations in engineering and technology, no. 4(95) (December 20, 2019): 5–15. http://dx.doi.org/10.37128/2306-8744-2019-4-1.

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The method of formalizing a granular medium in the form of a continuous deformable medium provides that the granular medium is continuous. In this case, the methods of mechanics of continuous deformable media in Eulerian or Lagrangian coordinates are used. The method allows you to take into account the interaction between particles in the form of elastic, viscous or plastic components of internal resistance. With this formalization, the most widespread application of the Navier-Stokes equation. Unfortunately, the exact correct solution of such an equation in an analytical form does not exist.

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Kao, B. G., and T. Warholic. "BAT Model Lateral Parameters Characterization Using Finite Element Model." Tire Science and Technology 31, no. 4 (2003): 225–47. http://dx.doi.org/10.2346/1.2135270.

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Abstract The bushing analogy tire (BAT) model has been shown to be capable of modeling tire dynamics in vehicle dynamic simulations. In a recent paper, the tire and vehicle data have been used to demonstrate that the BAT model yields reasonable predictions of the vehicle vertical suspension dynamic responses up to the tire 2nd vertical mode (∼90 Hz). This paper studies the modeling of the tire dynamics in the lateral direction as the next step toward completion of the BAT model as a consistent 3-dimensional tire dynamics model. Finite element (FE) analysis is an advanced analytical method for

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Wu, Bo, Xiao Dong Yu, Xue Mei Chang, and Chao Yin. "Influence of Working Parameters on Dynamic Pressure Effect of Heavy Constant Flow Hydrostatic Center Rest." Applied Mechanics and Materials 274 (January 2013): 82–86. http://dx.doi.org/10.4028/www.scientific.net/amm.274.82.

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In order to increase the working performance of a heavy constant flow hydrostatic center rest, a theoretical study concerning the lubricating oil film dynamic pressure effect of the heavy constant flow hydrostatic center rest is described. The Computational Fluid Dynamics and the Finite Volume Method have been used to compute numerically the static pressure field and the total pressure field of the lubricating oil film. The influences of spindle rotating rate, lubricating oil dynamic viscosity and inlet flow rate on the lubricating oil film dynamic pressure effect of the heavy constant flow hy

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Шавьолкін, О. О., І. О. Шведчикова, Г. В. Кругляк, Р. М. Марченко та А. В. Пісоцький. "РОЗРОБЛЕННЯ ЕКСПЕРИМЕНТАЛЬНОЇ УСТАНОВКИ ДЛЯ ВИПРОБУВАНЬ ПРОГРАМНО-АПАРАТНИХ ЗАСОБІВ УПРАВЛІННЯ МІКРОЕНЕРГЕТИЧНИМИ МЕРЕЖАМИ ЛОКАЛЬНИХ ОБ’ЄКТІВ". Bulletin of the Kyiv National University of Technologies and Design. Technical Science Series 148, № 4 (2021): 14–24. http://dx.doi.org/10.30857/1813-6796.2020.4.1.

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Development of the experimental installation for testing of the software and hardware tools of management of a photovoltaic system of a local facility connected to the grid, which, along with checking its operability, will allow analyzing the operation and adjusting the settings of systems with different parameters under different weather conditions, load schedules and operating modes. Method. Experimental research with preliminary justification of settings based on calculations and simulation data obtained in the Matlab software package. Results. The structure and experimental installation on

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Šnīders, A. "Transient Process Modelling in Waste Water Aeration Unit." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 1 (June 26, 2006): 269. http://dx.doi.org/10.17770/etr2003vol1.2017.

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To minimize the expenditure of electrical energy for communal waste water biological treatment the simulation and investigation of oxygen transfer efficiency in aeration tank have been made. Soluted oxygen transfer efficiency ? 0 (Fig.1.) is one of the main important factor directly estimating the expenditure of electrical power for waste water aeration. The research object is an aeration tank (Fig.2.) with one input impact -–the air blower’s capacity Lg (m3/h), one output controlled parameter – dissoved oxygen concentration C (g/m3) and several perturbances such as waste water temperature T (

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Ivanov, Vladimir. "Dynamic Compensation of Parameters in Servo Drives." Известия высших учебных заведений. Электромеханика 64, no. 3 (2021): 36–44. http://dx.doi.org/10.17213/0136-3360-2021-3-36-44.

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In this paper, we studied a servo drive with an unlimited increase in the gain coefficients of the speed con-tour. We demonstrated dynamic compensation of parameters associated with the formation of differential com-ponents based on the coverage of the real coordinates of the control object using static model. It was shown that dynamics of the transient processes is caused by real differentiating links determining the fast and slow components of the transient process. The static velocity error in this case did not depend on the ratio of large and small time constants, as in a single integratin

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Chang, De Gong, S. M. Li, and Cong Feng An. "The Influence Analysis of Globular Indexing Cam Mechanism Size Parameters on Transmission Performance." Advanced Materials Research 426 (January 2012): 163–67. http://dx.doi.org/10.4028/www.scientific.net/amr.426.163.

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The globular indexing cam mechanism is a kind of high-speed and high-precision indexing mechanism, widely used in the field of mechanical transmission, which has the character of smooth transmission, high-precision indexing, large transfer torque, wider choice of dynamic and static ratio, simple structure and low cost, etc. In this paper, the working principle and the main movement parameters of globular indexing cam mechanism are analyzed, and the dynamics simulation of this mechanism is done by using ADAMS dynamic simulation software to analyze the influence of size parameters on the transmi

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Dew, Ryan, Asim Ansari, and Yang Li. "Modeling Dynamic Heterogeneity Using Gaussian Processes." Journal of Marketing Research 57, no. 1 (2019): 55–77. http://dx.doi.org/10.1177/0022243719874047.

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Marketing research relies on individual-level estimates to understand the rich heterogeneity of consumers, firms, and products. While much of the literature focuses on capturing static cross-sectional heterogeneity, little research has been done on modeling dynamic heterogeneity, or the heterogeneous evolution of individual-level model parameters. In this work, the authors propose a novel framework for capturing the dynamics of heterogeneity, using individual-level, latent, Bayesian nonparametric Gaussian processes. Similar to standard heterogeneity specifications, this Gaussian process dynami

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Barchiesi, Emilio, and Sergei Khakalo. "Variational asymptotic homogenization of beam-like square lattice structures." Mathematics and Mechanics of Solids 24, no. 10 (2019): 3295–318. http://dx.doi.org/10.1177/1081286519843155.

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By means of variational asymptotic homogenization, using Piola’s meso-macro ansatz, we derive the linear Timoshenko beam as the macro-scale limit of a meso-scale beam-like periodic planar square lattice structure. By considering benchmarks in statics and dynamics, meso-to-macro convergence is numerically analyzed. At the finest micro-scale, a 2D assembly of elastic, geometrically linear, isotropic and homogeneous Cauchy continua in plane strain with different material parameters is considered. Using this description, we calibrate the meso-scale model using standard methodology and, by exploiti

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Vershok, I. L. "Interdisciplinary Approach to the Analysis of the Dynamics of Legal Consciousness." Siberian Law Review 17, no. 4 (2020): 438–54. http://dx.doi.org/10.19073/2658-7602-2020-17-4-438-454.

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The article deals with the dynamic aspects of legal consciousness. It is concluded that the traditional definition of legal consciousness as a set of emotions, ideas and feelings about the current and previously valid law was formed on the basis of the dominant materialistic concept as the ideological basis of knowledge in jurisprudence. Its use as a universal method determined the study of certain aspects of legal consciousness as an object of research activity, existing in the form of a reflection of the surrounding (legal) reality. As a result, the definition of legal consciousness in stati

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Vershok, I. L. "Interdisciplinary Approach to the Analysis of the Dynamics of Legal Consciousness." Siberian Law Review 17, no. 4 (2020): 438–54. http://dx.doi.org/10.19073/2658-7602-2020-17-4-438-454.

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The article deals with the dynamic aspects of legal consciousness. It is concluded that the traditional definition of legal consciousness as a set of emotions, ideas and feelings about the current and previously valid law was formed on the basis of the dominant materialistic concept as the ideological basis of knowledge in jurisprudence. Its use as a universal method determined the study of certain aspects of legal consciousness as an object of research activity, existing in the form of a reflection of the surrounding (legal) reality. As a result, the definition of legal consciousness in stati

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Ignatkin, V. "Features of Dynamic Error Analysis in the Process of Evaluation of Metrological Reliability of Measuring Equipment." Metrology and instruments, no. 2 (May 3, 2019): 36–42. http://dx.doi.org/10.33955/2307-2180(2)2019.36-42.

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The article discusses metrological reliability of measuring equipment (ME), argues that ME imprecision must be considered not in statics, 'out in dynamics, taking into account the change of its characteristics over time. Measurement imprecision and its components are considered as random processes that are fully characterized by multidimensional distribution. It is advisable to determine the probability of metrological measurements directly from the experiment due to the difficulties of analytical solution to the problem. The characteristics of dynamic imprecision depend on both the values of

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Берестин, D. Berestin, Попов, et al. "Possibilities of stochastic processing of system parameters with chaotic dynamics." Complexity. Mind. Postnonclassic 3, no. 2 (2014): 59–67. http://dx.doi.org/10.12737/5519.

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The paper presents the first attempt to combine methods of stochastics (mathematical statistics) and methods of theory of chaos and self-organization for studying such complex (chaotic) processes as postural tremor. It was established that when re-registering tremor in each subject by n=15 or n=30 obtained tremorograms do not exhibit normal distribution, and non-parametric distributions show distinctions at pairwise comparison on Wilcoxon test (only 2 or 3 pairs from 210 may belong to the same general population). Static physical load sharply changes this picture and the number of such (&#

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Li, Huai Yong, Su Jing Wang, Ying Xun Guo, and Jian Hua Huang. "Mechanical Analysis of the Arm Lifting Rope of the Dynamic Compaction Machine." Applied Mechanics and Materials 851 (August 2016): 259–64. http://dx.doi.org/10.4028/www.scientific.net/amm.851.259.

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In this paper, the mechanics equation of the dynamic compaction machine arm frame is established based on the theory of statics, the arm lifting rope force is given, the influence of the wire rope force with relative position parameters changing is also discussed. The critical factors that affect the arm lifting rope force are identified. Compared the simulation and the test results, the major forces errors are less than 8%. The correctness of the theoretical study and simulation are verified. The research results could be used for the arm wire rope type selection of the dynamic compaction.

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Gómez, Manuel A. "EQUILIBRIUM DYNAMICS IN AN ENDOGENOUS GROWTH MODEL WITH HABIT FORMATION AND ELASTIC LABOR SUPPLY." Macroeconomic Dynamics 19, no. 3 (2013): 618–42. http://dx.doi.org/10.1017/s1365100513000503.

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This paper analyzes the dynamics of an endogenous growth model with external habit formation and elastic labor supply. We first derive the conditions for the existence, uniqueness, and saddlepath stability of a feasible steady state with positive long-run growth. The global dynamics of the economy are characterized by phase-diagram analysis. Then we characterize the comparative static effects of shocks in preferences and production parameters analytically. The comparative dynamic effects of the shocks are characterized by phase-diagram analysis.

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Zhang, Yao Man, Ren Jun Gu, and Guang Xiao Yang. "Static and Dynamic Characteristic Analysis for the HSR Series Linear Motion Guide." Advanced Materials Research 834-836 (October 2013): 1488–92. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.1488.

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The dynamic characteristic of junction surface is an important part of the dynamic characteristics of NC machine tools, and it is sometimes the weakest link of the machine tool's dynamic characteristics. The precision of the finite element calculation of the machine tool's dynamic characteristics shall be affected by the junction surface parameters directly. Linear Motion guide is one of the most widely used components of the NC machine tool, and its characteristic is one of the most important components of the performances of the NC machine tool. The HSR series of linear motion guides are tak

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Xu, Chuanbo, Mao-Ru Chi, Liangcheng Dai, Yiping Jiang, and Zhaotuan Guo. "Study of Vertical Characteristics with Changes in Prepressure of Rubber Pad Used by High-Speed EMU." Advances in Materials Science and Engineering 2020 (June 17, 2020): 1–13. http://dx.doi.org/10.1155/2020/8257286.

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Rubber spring plays an important role in improving train performance, so the study of rubber spring is one of the focuses of train dynamics. The vertical characteristic parameters of rubber spring are affected by prepressure significantly, as a result of varying parameters of static stiffness, dynamic stiffness, periodic energy consumption, damping coefficient, and so on. In order to use the theoretical method to calculate the precise static stiffness and predict the dynamic characteristics and to reduce the workload of the rubber spring performance test, this paper takes the annular rubber pa

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Radosz, Wojciech, Grzegorz Pawlik, and Antoni C. Mituś. "Characterization of Monte Carlo Dynamic/Kinetic Properties of Local Structure in Bond Fluctuation Model of Polymer System." Materials 14, no. 17 (2021): 4962. http://dx.doi.org/10.3390/ma14174962.

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We report the results of the characterization of local Monte Carlo (MC) dynamics of an equilibrium bond fluctuation model polymer matrix (BFM), in time interval typical for MC simulations of non-linear optical phenomena in host-guest systems. The study contributes to the physical picture of the dynamical aspects of quasi-binary mosaic states characterized previously in the static regime. The polymer dynamics was studied at three temperatures (below, above and close to the glass transition), using time-dependent generalization of the static parameters which characterize local free volume and lo

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Sheng, Dong Fa. "Dynamical Behaviors of Nonlinear Viscoelastic Piles with Damage." Advanced Materials Research 479-481 (February 2012): 234–39. http://dx.doi.org/10.4028/www.scientific.net/amr.479-481.234.

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Base on the constitutive model expressed by convolution method for viscoelastic materials with damage, the initial-boundary-value problem analyzing static-dynamic behaviors of homogeneous, isotropic viscoelastic. Tiimoshenko beams with damage, placed on a viscoelastic foundation, is formulated under the case of finite deflections. And we adopt the model to simulate the dynamical behaviors of viscoelastic piles with damage placed on a viscoelastic foundation. The numerical methods in nonlinear dynamics are used to solve the simplified systems. The phase-trajectory diagrams, Poincare sections an

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Andreev, Vadim. "Style Evolution: Space and Movement in Longfellow’s Lyrical Poems." Bakhtiniana: Revista de Estudos do Discurso 16, no. 3 (2021): 166–86. http://dx.doi.org/10.1590/2176-457350035.

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ABSTRACT Variance of individual style over time and the tendencies in style evolution are important issues in modern linguistics. This paper investigates how parameters of space and movement categorization were deployed by the famous American poet H.W. Longfellow at different stages of his creative career. The attention is focused on lexical units with spatial meaning. The analysis revealed significant changes in (i) the structure of space, (ii) the ratio of horizontal vs. vertical relations of objects, statics vs. dynamics, and (iii) the role of a human being in poetic space. The early verse

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Shin, J. K., and Yuri Mansury. "Emerging Spatiotemporal Patterns from Discrete Migration Dynamics of Heterogeneous Agents." Discrete Dynamics in Nature and Society 2010 (2010): 1–13. http://dx.doi.org/10.1155/2010/348747.

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We propose a discrete agent-based model to investigate the migration dynamics of heterogeneous individuals. Compatibility among agents of different types is expressed in terms of homophily parameters capturing the extent to which similar individuals are attracted to, or dissimilar individuals are repelled by, each other. Based on agent-based simulations, we establish the connection between emerging spatiotemporal patterns and the homophily parameters. Key results are presented in a novel phase diagram, which reveals a wide range of spatial patterns including the cell, worm, herd, amoeba, and s

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Jia, Chenhui, Zhiwu Cui, Shijun Guo, and Wensuo Ma. "Research on dynamic characteristics of gas film of spherical hybrid gas bearings based on computational fluid dynamics." Transactions of the Canadian Society for Mechanical Engineering 44, no. 1 (2020): 23–37. http://dx.doi.org/10.1139/tcsme-2018-0134.

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A realizable k–ε turbulence model for spherical spiral groove hybrid gas bearing films was established based on computational fluid dynamics (CFD). A six degrees of freedom passive grid was used to calculate the gas film pressure distribution, bearing capacity, and dynamic characteristic coefficients numerically. The gas flow field dynamic and static pressure coupling mechanism was studied. The effects of the rotation speed, gas film thickness eccentricity ratio, and gas supply pressure on the dynamic and static pressure bearing capacity, and dynamic characteristic coefficients during operatio

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Nguyen, Xo Van. "Design calculations and simulation dynamics of banana screen." Journal of Mining and Earth Sciences 61, no. 2 (2020): 50–57. http://dx.doi.org/10.46326/jmes.2020.61(2).06.

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The banana screen is a device used to classify materials widely used in screenings factories at home and abroad. It's working ability depends on many factors (kinematic parameters, technological parameters, particle size, and material moisture,...). If using the traditional method to determine suitable parameters to reach high efficiency, it is very difficult. Because the calculated results are not accurate, it takes a designer much time and makes the manufacturing cost increase. In this study, the author uses the computer software CREO, ADAMS, ANSYS to design and simulate the dynamics of the

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Muscolino, Giuseppe, Alba Sofi, and Filippo Giunta. "Dynamics of structures with uncertain-but-bounded parameters via pseudo-static sensitivity analysis." Mechanical Systems and Signal Processing 111 (October 2018): 1–22. http://dx.doi.org/10.1016/j.ymssp.2018.02.023.

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Lemaalem, M., A. Derouiche, S. EL Fassi, and H. Ridouane. "The influence of temperature and density on the microscopic structure and dynamics of long polymer chains: Molecular dynamics and dissipative particle dynamics modeling." International Journal of Computational Materials Science and Engineering 06, no. 03 (2017): 1750023. http://dx.doi.org/10.1142/s2047684117500233.

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Long polymer chains that mainly exhibit thermoplastic properties are recognized to demonstrate excellent thermal and mechanical features at the molecular level. For the purpose of facilitating its study, we present the results of a coarse-grained Molecular Dynamics (MD) and Dissipative Particle Dynamics (DPD) simulations under the Canonical ensemble (NVT) conditions. For each simulation method, the structure, static and dynamic properties were analyzed, with particular emphasis on the influence of density and temperature on the equilibrium of the polymer. We find, after correcting the Soft Rep

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Xu, Dan, and Zhixin Feng. "Research on Dynamic Modeling and Application of Kinetic Contact Interface in Machine Tool." Shock and Vibration 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/5658181.

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A method is presented which is a kind of combining theoretic analysis and experiment to obtain the equivalent dynamic parameters of linear guideway through four steps in detail. From statics analysis, vibration model analysis, dynamic experiment, and parameter identification, the dynamic modeling of linear guideway is synthetically studied. Based on contact mechanics and elastic mechanics, the mathematic vibration model and the expressions of basic mode frequency are deduced. Then, equivalent stiffness and damping of guideway are obtained in virtue of single-freedom-degree mode fitting method.

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Gusella, Vittorio, Giuseppina Autuori, Patrizia Pucci, and Federico Cluni. "Dynamics of Nonlocal Rod by Means of Fractional Laplacian." Symmetry 12, no. 12 (2020): 1933. http://dx.doi.org/10.3390/sym12121933.

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The use of fractional models to analyse nonlocal behaviour of solids has acquired great importance in recent years. The aim of this paper is to propose a model that uses the fractional Laplacian in order to obtain the equation ruling the dynamics of nonlocal rods. The solution is found by means of numerical techniques with a discretisation in the space domain. At first, the proposed model is compared to a model that uses Eringen’s classical approach to derive the differential equation ruling the problem, showing how the parameters used in the proposed fractional model can be estimated. Moreove

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Yang, Hua, Takeshi Takaki, and Idaku Ishii. "Simultaneous Dynamics-Based Visual Inspection Using Modal Parameter Estimation." Journal of Robotics and Mechatronics 23, no. 1 (2011): 180–95. http://dx.doi.org/10.20965/jrm.2011.p0180.

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In this study, we introduce the concept of dynamicsbased visual inspection with High-Frame-Rate (HFR) video analysis as a novel non-destructive active sensing method for verifying dynamic properties of a vibrating object. The HFR video is used for determining the structural dynamic properties of an object, such as its resonant frequencies and mode shapes, which can be estimated as modal parameters by modal analysis only when the object is excited. By improving and implementing a fast output-only modal parameter estimation algorithm on a real-time 2000-fps vision platform, the modal parameters

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GOLDSTEIN, R. S., M. F. ZIMMER та Y. OONO. "MODELING MESOSCALE DYNAMICS OF FORMATION OF δ′-PHASE IN Al-Li ALLOYS". Modern Physics Letters B 07, № 16 (1993): 1083–94. http://dx.doi.org/10.1142/s0217984993001077.

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A mesoscale minimal model study of the α−δ′ two-phase system is presented. A minimal model free energy is introduced which reveals universal features of the ordering dynamics of the disordered into the L1 2 ordered state. Static phenomenological parameters of the minimal model are chosen to reproduce the equilibrium phase diagram, and dynamical ones are chosen to reproduce recent experimental scattering results by H. Chen’s group.

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