Results 81 to 90 of about 97,714 (213)

Experimental Study on the Reconstruction of a Light Field through a Four-Step Phase-Shift Method and Multiple Improvement Iterations of the Least Squares Method for Phase Unwrapping

Photonics
Phase unwrapping technology can reflect the true phase information of an image, but it is affected by adverse factors such as noise, shadows, and fractures when extracting the true phase information of an object.
Yucheng Li, Yang Zhang, Deyu Jia, Muqun Zhang, Xianfa Ji, Yongtian Li, Yifeng Wu   +6 more
doaj   +1 more source

Molecular emission bands in the ultraviolet spectrum of the red rectangle star HD 44179 [PDF]

New observations of the ultraviolet spectrum of HD 44179 are reported. Absorption due to the CO molecule is present in the spectrum with NCO approximately 10 to the 18th power per sq cm.
Sitko, M. L.
core   +1 more source

Sizes, Shapes, and Correlations of Lyman Alpha Clouds and Their Evolution in the CDM$+\Lambda$ Universe

, 1997
This study analyzes the sizes, shapes and correlations of $\lya$ clouds produced by a hydrodynamic simulation of a spatially flat CDM universe with a non-zero cosmological constant ($\Omega_0=0.4$, $\Lambda_0=0.6$, $\sigma_8 =0.79$), over the redshift ...
Babul A., Bertschinger E., Couch W. J., Cristiani S., Efstathiou G., Liddle A. R., Lidsey J. E., Ma C. P., Ostriker J. P., Oukbir J., Peacock J. A., Petitjean P., Rees M., Renyue Cen, Robert A. Simcoe, Roche N., Scalo J. M., Smette A., White S. D. M.   +18 more
core   +1 more source

The jet and the disk of the HH 212 low-mass protostar imaged by ALMA: SO and SO2 emission [PDF]

, 2015
To investigate the disk formation and jet launch in protostars is crucial to comprehend the earliest stages of star and planet formation. We aim to constrain the properties of the molecular jet and the disk of the HH 212 protostellar system at ...
Bachiller, R., Cabrit, S., Codella, C., Gueth, F., Gusdorf, A., Lee, C. -F., Lefloch, B., Leurini, S., Nisini, B., Podio, L., Tafalla, M.   +10 more
core   +4 more sources

Maintaining high conductivity in NiCo2O4 epitaxial thin films to 625 °C via an overlayer stabilization approach [PDF]

APL Materials
Spinel materials offer excellent physical, optical, and biomedical properties, particularly in epitaxial form. However, spinel electrode materials for these epitaxial films are limited. While NiCo2O4 (NCO) is a high-performing conductive spinel, it loses
Muireann de h-Óra, Stephanie O. Adeyemo, Yuxuan Liu, Hannah Joyce, Judith MacManus-Driscoll   +4 more
doaj   +1 more source

Finite temperature properties of the triangular lattice t-J model, applications to Na$_x$CoO$_2$

, 2006
We present a finite temperature ($T$) study of the t-J model on the two-dimensional triangular lattice for the negative hopping $t$, as relevant for the electron-doped Na$_x$CoO$_2$ (NCO).
B. Sriram Shastry, J. Jaklic, Jan O. Haerter, Michael R. Peterson, P. N. Mahesh, T. Takeuchi, Y. Wang   +6 more
core   +1 more source

Asymptotic tail probability of weighted infinite sum of conditionally dependent and consistently varying tailed random variables

Journal of Inequalities and Applications, 2019
This paper investigates the asymptotic behavior of the tail probability of a weighted infinite sum of random variables with consistently varying tails under two conditional dependence structures.
Qingwu Gao, Xijun Liu, Chunhong Chai
doaj   +1 more source

Enhanced sensor fusion and adaptive control for UAV fire control systems: A quantitative evaluation of graceful degradation under adverse conditions

Ain Shams Engineering Journal
Unmanned Aerial Vehicles (UAVs) are vital for diverse critical operations, yet their performance and reliability can be severely compromised by sensor degradation and environmental noise, often leading to abrupt system failures. This paper addresses this
Wanyang Wang, Le Qi, Zhanduo Jie
doaj   +1 more source

Mean-field dynamics of the non-consensus opinion model

Applied Network Science
In 2009, Shao et al. (Phys Rev Lett 103(1):018701, 2009) introduced the Non-consensus opinion (NCO) model, which allows different opinions to coexist in the steady state.
Xinhan Liu, M. A. Achterberg, Robert Kooij   +2 more
doaj   +1 more source

Digital phase-lock loop having an estimator and predictor of error [PDF]

, 1988
A digital phase-lock loop (DPLL) which generates a signal with a phase that approximates the phase of a received signal with a linear estimator. The effect of a complication associated with non-zero transport delays related to DPLL mechanization is then ...
Hurd, William J., Statman, Joseph I.
core   +1 more source