Suggested Topics within your search.
Showing 361 - 380 results of 554 for search '"gravitation"', query time: 0.05s Refine Results
  1. 361
  2. 362

    Connectomes as holographic states by Dmitry Melnikov

    Published 2025-01-01
    “…Thinking of further quantum gravity comparisons we discuss replica wormholes and conclude that similar objects exist beyond gravitational theories. The topological theory perspective suggests that the sum over all wormholes is always factorizable, even though the individual ones might not be.…”
    Get full text
    Article
  3. 363

    Double logarithms in N $$ \mathcal{N} $$ ≥ 4 supergravity: weak gravity and Shapiro’s time delay by Agustín Sabio Vera

    Published 2020-01-01
    “…This screening of the gravitational interaction at short distances in the double logarithmic sector of the amplitudes is more acute as the number of gravitinos in the theory increases. …”
    Get full text
    Article
  4. 364
  5. 365

    Stability of a Noncanonical Scalar Field Model during Cosmological Date by Z. Ossoulian, T. Golanbari, H. Sheikhahmadi, Kh. Saaidi

    Published 2016-01-01
    “…The energy density in the scalar field is not appreciably perturbed by nonrelativistic gravitational fields, in either the radiation or matter dominant or scalar field dominated epoch.…”
    Get full text
    Article
  6. 366

    Effects of Rotation and Gravity Field on Surface Waves in Fibre-Reinforced Thermoelastic Media under Four Theories by A. M. Abd-Alla, S. M. Abo-Dahab, A. Al-Mullise

    Published 2013-01-01
    “…Estimation is done to investigate the gravitational and rotational parameters effects on surface waves in fibre-reinforced thermoelastic media. …”
    Get full text
    Article
  7. 367

    A New Approach to Black Hole Quasinormal Modes: A Review of the Asymptotic Iteration Method by H. T. Cho, A. S. Cornell, Jason Doukas, T.-R. Huang, Wade Naylor

    Published 2012-01-01
    “…This paper presents for the first time the spin 0, 1/2 and 2 QNMs of a Kerr black hole and the gravitational and electromagnetic QNMs of the RN black hole calculated via the AIM and confirms results previously obtained using the CFM. …”
    Get full text
    Article
  8. 368

    A chiral Λ-bms4 symmetry of AdS4 gravity by Nishant Gupta, Nemani V. Suryanarayana

    Published 2025-01-01
    “…This symmetry algebra coincides with the chiral bms4 algebra in the flat space limit with the corresponding solutions mapping to the space of gravitational vacua in R1,3 gravity. We posit this symmetry algebra as the chiral version of recently discovered Λ-bms4 algebra. …”
    Get full text
    Article
  9. 369

    The braneworld stability and large-scale correction in graphene like background by Zahra Zali, Jafar Sadeghi, Behnam Pourhassan

    Published 2019-04-01
    “…We calculate heat capacity, Gibbs and Helmholtz free energy to analyze thermodynamics stability, then consider small perturbations in graphene like metric background to investigate gravitational stability. We find that the model is completely stable unless in very low temperatures where the graphene structure may break. …”
    Get full text
    Article
  10. 370

    800 kV交流隔离开关的机构运动分析及平衡弹簧优化设计 by 孙玉洲, 李付永, 郭海涛, 王巧红, 夏立国, 师丽芳, 刘本学, 柴影辉

    Published 2021-01-01
    “…800 kV AC disconnector is one of the key equipment for extra high voltage( EHV) substation,and the balance spring is an important component to reduce external load and improve equipment reliability.Aiming at 800 kV EHV disconnector,the mechanism kinematic analysis of main knife mechanism is completed based on the motion diagram,and the theoretical equation of the structural potential energy for disconnector is obtained.Then,the dynamic simulation analysis model of disconnector is established in ADAMS through virtual prototype technology.The difference between the elastic potential energy of the balance spring and the potential energy of the mechanism under the initial design condition is simulated.In order to further narrow the gap between the spring energy and the gravitational potential energy,this paper optimizes the spring system design.The simulation results show that the max-gap change between the optimal balance spring potential energy and the mechanism potential energy is reduced by about 28% than that of the initial.When the disconnector works,the external load required is greatly reduced.…”
    Get full text
    Article
  11. 371

    Performance Evaluation of Antlion Optimizer Based Regulator in Automatic Generation Control of Interconnected Power System by Esha Gupta, Akash Saxena

    Published 2016-01-01
    “…The comparison of the regulator performance obtained from ALO is carried out with Genetic Algorithm (GA), Particle Swarm Optimization (PSO), and Gravitational Search Algorithm (GSA) based regulators. …”
    Get full text
    Article
  12. 372

    Geomorphology of craters located at Mercury’s north pole by Silvia Bertoli, Alice Lucchetti, Maurizio Pajola, Elena Martellato, Matteo Massironi, Pamela Cambianica, Emanuele Simioni, Gabriele Cremonese

    Published 2024-12-01
    “…The mapping highlights landforms which might be related to volcanic, gravitational, and maybe periglacial events.…”
    Get full text
    Article
  13. 373

    Resistance exercise training improves disuse-induced skeletal muscle atrophy in humans: a meta-analysis of randomized controlled trials by Xian Guo, Yanbing Zhou, Xinxin Li, Jinhao Mu

    Published 2025-02-01
    “…Abstract Background This meta-analysis aimed to determine whether resistance exercise training (RET) can attenuate the loss of muscle volume and function in anti-gravitational muscles, especially quadriceps and calf muscles, during immobilization/disuse conditions. …”
    Get full text
    Article
  14. 374

    Constraining the equation of state in neutron-star cores via the long-ringdown signal by Christian Ecker, Tyler Gorda, Aleksi Kurkela, Luciano Rezzolla

    Published 2025-02-01
    “…Abstract Multimessenger signals from binary neutron star (BNS) mergers are promising tools to infer the properties of nuclear matter at densities inaccessible to laboratory experiments. Gravitational waves (GWs) from BNS merger remnants can constrain the neutron-star equation of state (EOS) complementing constraints from late inspiral, direct mass-radius measurements, and ab-initio calculations. …”
    Get full text
    Article
  15. 375

    THE SUEZ CANAL AS A MARITIME TRADE STRATEGIC POINT AND ITS IMPACT UPON THE ADRIATIC PORTS by Barbara Rudić, Patricija Štivičić

    Published 2023-07-01
    “…One of the main goals of this paper is to emphasize the fact that the Suez Canal and the gravitational hinterland of the northern Adriatic ports with their land traffic routes are the key elements in determining the development and operation of the northern Adriatic ports.…”
    Get full text
    Article
  16. 376

    A Novel Technique to Compute the Revisit Time of Satellites and Its Application in Remote Sensing Satellite Optimization Design by Xin Luo, Maocai Wang, Guangming Dai, Xiaoyu Chen

    Published 2017-01-01
    “…The technique is discussed using the Bezout equation and takes the gravitational second zonal harmonic into consideration. …”
    Get full text
    Article
  17. 377

    Energy-Efficient Robust Control for Direct Drive and Energy Recuperation Hydraulic Servo System by Weiping Wang, Jiyun Zhao

    Published 2020-01-01
    “…During the vertical cyclic actuation process of heavy materials handling, the gravitational potential energy will be converted to heat in the form of throttle in the traditional hydraulic system. …”
    Get full text
    Article
  18. 378

    Research on Current Solid Mass Energy Storage (SGES) by Su Yichen

    Published 2025-01-01
    “…This paper examines solid mass energy storage (SGES), a newly developed energy storage technology by converting excess electricity into gravitational potential energy. The paper also lists out some of its most popular variation and relevant quantitative analysis. …”
    Get full text
    Article
  19. 379

    Research on Optimizing Selection and Optimizing Matching Technologies of Aeroengine Fan Rotor Blades by Lili Li, Kun Chen, Jianmin Gao, Zhiyong Gao, Junkong Liu

    Published 2021-01-01
    “…Aiming at the problem of low resources utilization of rotating blades in the selection process of aeroengine fan rotor blades, this paper takes the first-order bending dispersion, first-order torque dispersion, and gravitational moment difference of rotor blades as the selection criteria and takes the minimum remaining blades as the optimization goal. …”
    Get full text
    Article
  20. 380

    TESLA GPUs versus MPI with OpenMP for the Forward Modeling of Gravity and Gravity Gradient of Large Prisms Ensemble by Carlos Couder-Castañeda, Carlos Ortiz-Alemán, Mauricio Gabriel Orozco-del-Castillo, Mauricio Nava-Flores

    Published 2013-01-01
    “…An implementation with the CUDA technology in a single and in several graphics processing units (GPUs) is presented for the calculation of the forward modeling of gravitational fields from a tridimensional volumetric ensemble composed by unitary prisms of constant density. …”
    Get full text
    Article