Mostrando 7,681 - 7,700 Resultados de 7,822 Para Buscar '"álgebra"', tiempo de consulta: 0.82s Limitar resultados
  1. 7681
    “…A basic organizational principle of the primate visual system is that it maps the visual environment repeatedly and retinotopically onto cortex. Simple algebraic models can be used to describe the projection from visual space to cortical space not only for V1, but also for the complex of areas V1, V2 and V3. …”
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  2. 7682
    por Li, Xueli, Luo, Shuqian
    Publicado 2011
    “…The results show that the CS-based iterative algorithm can yield images with quality comparable to that obtained with existing FBP and traditional algebraic reconstruction technique (ART) algorithms. …”
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  3. 7683
    “…When circadian drift over multiple study days was algebraically removed, there were no significant differences between analysis methods of melatonin onsets (P = 0.57), but there were significant differences between those of melatonin offsets (P<0.0001). …”
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  4. 7684
    “…Our approach, which offers a theoretical guarantee of convergence to global minimum, is based on reformulating the set of ordinary differential equations into an equivalent set of algebraic equations through the use of orthogonal collocation methods, giving rise to a nonconvex nonlinear programming (NLP) problem. …”
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  5. 7685
    “…While for two SPD matrices the mean has an algebraic closed form solution, for a set of more than two SPD matrices it can only be estimated by iterative algorithms. …”
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  6. 7686
    “…METHODS: We retrospectively reviewed data from 1029 stable patients with HF and have calculated negative (loss) and positive (gain) components of weight change from the onset of HF till index date. The algebraic sum of these components was taken as CAB. …”
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  7. 7687
    por Chen, Weiqi, Liu, Jing, He, Shan
    Publicado 2017
    “…We also incorporate a novel constraints based on algebraic connectivity to ensure the connectedness of the identified active modules. …”
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  8. 7688
    por Agarwal, Rajiv
    Publicado 2017
    “…CONCLUSIONS: Taken together, these results suggest that translation of the SPRINT results will require measurement of BP as performed in that trial. Instead of an algebraic manipulation of routine clinic measurements, the SPRINT methodology of BP measurement would be needed at minimum if implementation of the SPRINT results were to be deployed in the population at large.…”
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  9. 7689
    “…METHODS AND FINDINGS: The test system for measuring 3D strain distribution consists of two cameras, a laser, a universal testing machine, an acrylic chamber with a glycerol water solution for adjusting the refractive index with the silicone, and dumbbell-shaped specimens mixed with fluorescent tracer particles. 3D images of the particles were reconstructed from 2D images using a multiplicative algebraic reconstruction technique (MART) and motion tracking enhancement. …”
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  10. 7690
    “…TMS over M1 or PMv produced reflex inhibition significantly stronger on combined stimulations, compared to the algebraic sum of effects induced by isolated stimuli. …”
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  11. 7691
    “…Compared to numerical calculations, the simplified algebraic model slightly overestimated the contrast but the differences remained below 5%. …”
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  12. 7692
    “…Stress equilibrium is imposed in weak form and the resulting force balance equations are coupled to a lumped-parameter model of the circulation, leading to a system of differential–algebraic equations, whose numerical solution yields predictions of LV pressure and volume, together with spatial distributions of stresses and strains throughout the cardiac cycle. …”
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  13. 7693
    por Grunau, Gilat, Linn, Shai
    Publicado 2018
    “…OBJECTIVES: To develop methods of calculating the overall accuracy of medical tests in the patient population. METHODS: Algebraic equations based on Bayes’ theorem. RESULTS: A new approach is proposed for calculating overall accuracy in the patient population. …”
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  14. 7694
    por Clark, Allan E., Altwegg, Res
    Publicado 2019
    “…The use of the logistic link function, however, is algebraically more tractable and allows one to easily interpret the coefficient effects of an estimated model by using odds ratios, which is not easily done for a probit link function for models that do not include spatial random effects. …”
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  15. 7695
    “…We suggest that both stimulations would affect our straight ahead by combining their effects in an algebraic mode.…”
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  16. 7696
    “…A central problem of algebraic topology is to understand the homotopy groups[Formula: see text] of a topological space X. …”
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  17. 7697
    “…The computed system matrix was evaluated in the context of reconstruction using the simultaneous algebraic reconstruction technique (SART) as well as maximum likelihood expectation maximization (MLEM). …”
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  18. 7698
    “…Our probe consists of a simple, thermodynamically constrained, algebraic model of cardiac mechano-energetics. Our analysis fails to reconcile recent and classical estimates of PO(2) ratios; hence, we are left with a conundrum.…”
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  19. 7699
    “…The sinogram data with simulated and real low doses were then reconstructed with KWIA, and compared with those reconstructed by standard filtered back projection (FBP) and simultaneous algebraic reconstruction with regularization of total variation (SART-TV). …”
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  20. 7700
    “…In this work, we transfer and adapt four inverse problem methods to the ECGI setting: algebraic reconstruction technique (ART), random ART, ART Split Bregman (ART-SB) and range restricted generalized minimal residual (RRGMRES) method. …”
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