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The maximum acceleration and cosmology
Astrophysics and Space Science, 1989The hyperbolic motion of an idealized globular particle with the Planck length radius is described by means of special relativity in order to derive an upper quantum limit of acceleration. Furthermore, it is shown that the existence of a relative acceleration can be excluded by principle. Finally, by assuming validity of Mach's principle, it is deduced
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GAIPS: Accelerating Maximum Inner Product Search with GPU
Proceedings of the 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, 2021In this paper, we propose the GAIPS framework for efficient maximum inner product search (MIPS) on GPU. We observe that a query can usually find a good lower bound of its maximum inner product in some large norm items that take up only a small portion of the dataset and utilize this fact to facilitate pruning. In addition, we design norm-based, residue-
Long Xiang, Xiao Yan, Lan Lu, Bo Tang
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Gas breakdown limit and maximum acceleration gradient for inverse Cherenkov laser accelerator
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1999Abstract Laser intensity thresholds for CO 2 laser-induced gas breakdown, such as tunneling, multiphoton, and cascade ionization have been estimated for the inverse Cherenkov accelerator experiment at the Brookhaven Accelerator Test Facility. The gas breakdown is dominated by cascade ionization and the maximum acceleration gradient is up to 300 MeV ...
Y. Liu, I.V. Pogorelsky, D. Cline
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GPU Accelerated Maximum Likelihood Analysis for Phylogenetic Inference
Proceedings of the 2019 8th International Conference on Software and Computer Applications, 2019With the advancement of biology and computer science, the amount of DNA sequences has grown at a rapid rate giving rise to the analysis of phylogenetic trees with many taxa. The maximum likelihood analysis is commonly considered as the best approach in phylogenetic analyses, which is extremely intensive for computation.
Sandun Rajapaksa +3 more
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Accelerating maximum likelihood estimation for Hawkes point processes
2013 23rd International Conference on Field programmable Logic and Applications, 2013Hawkes processes are point processes that can be used to build probabilistic models to describe and predict occurrence patterns of random events. They are widely used in high-frequency trading, seismic analysis and neuroscience. A critical numerical calculation in Hawkes process models is parameter estimation, which is used to fit a Hawkes process ...
Guo C., Luk W.
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Acceleration of list-mode expectation maximisation-maximum likelihood
2000 IEEE Nuclear Science Symposium. Conference Record (Cat. No.00CH37149), 2002List-mode data preserves all sampling information from 3D PET imaging, and reduces storage requirements for multiple time frame acquisitions. List-mode EM-ML, which has been implemented in a number of forms (such as the EM algorithm for list-mode maximum likelihood, the FAIR algorithm and COSEM), is an obvious choice to reconstruct from such data sets ...
A.J. Reader +5 more
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An accelerated 3D maximum likelihood SPECT image reconstruction
Conference Record of the 1991 IEEE Nuclear Science Symposium and Medical Imaging Conference, 2002A three-dimensional maximum likelihood estimation (MLE) algorithm for single photon emission computed tomography (SPECT) image reconstruction is developed. This expectation maximization MLE algorithm is implemented using a projector-backprojector pair which approximates the two-dimensional, position-dependent blurring in SPECT.
N. Rajeevan, B.C. Penney, C.L. Byrne
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Torsion and maximum acceleration in the early universe
Il Nuovo Cimento B Series 11, 1994The concept of maximum acceleration in the early universe is computed from torsion-spin effects.
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Scalable Hardware Acceleration of Non-Maximum Suppression
2022 Design, Automation & Test in Europe Conference & Exhibition (DATE), 2022Chunyun Chen +6 more
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An Area-Efficient Accelerator for Non-Maximum Suppression
IEEE Transactions on Circuits and Systems II: Express Briefs, 2023Kaihang Sun +5 more
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