Results 91 to 100 of about 1,287,395 (305)

Cosmological Model-independent Gamma-ray Bursts Calibration and its Cosmological Constraint to Dark Energy

, 2012
As so far, the redshift of Gamma-ray bursts (GRBs) can extend to $z\sim 8$ which makes it as a complementary probe of dark energy to supernova Ia (SN Ia).
, A.C. Collazzi, A.C.C. Guimaraes, B.E. Schaefer, D.J. Eisenstein, D.L. Band, E. Garcia-Berro, ESSENCE collaboration, H. Li ., H. Wei, H.J. Mosquera Cuesta, J.R. Bond, L. Amati, Lixin Xu, N. Liang, SDSS collaboration, Supernova Cosmology Project collaboration, Supernova Cosmology Project collaboration, Supernova Search Team collaboration, T. Okumura ., V. Acquaviva, V. Vitagliano, W. Hu, W. Hu, WMAP collaboration   +24 more
core   +1 more source

Sinusoidal phase modulating absolute distance measurement interferometer combining frequency-sweeping and multi-wavelength interferometry.

Optics Express, 2018
A sinusoidal phase modulating absolute distance measurement (ADM) interferometer combining frequency-sweeping interferometry (FSI) and multi-wavelength interferometry (MWI) is proposed in this paper. The swept frequency in FSI and the wavelengths for MWI
Shihua Zhang, Zheyi Xu, Benyong Chen, Liping Yan, Jiandong Xie   +4 more
semanticscholar   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

Advanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice, Krzysztof S. Stopka, Michael D. Sangid   +2 more
wiley   +1 more source

A precision determination of the Effect of Metallicity on Cepheid absolute magnitudes in VIJHK bands from Magellanic Cloud Cepheids

, 2017
Using high-quality observed period-luminosity relations in both Magellanic Clouds in VIJHKs bands and optical and near-infrared Wesenheit indices we determine the effect of metallicity on Cepheid P-L relations by comparing the relative distance between ...
Bresolin, Fabio, Gieren, Wolfgang, Gorski, Marek, Graczyk, Dariusz, Kudritzki, Rolf-Peter, Matsunaga, Noriyuki, Pietrzynski, Grzegorz, Soszynski, Igor, Storm, Jesper, Wielgorski, Piotr, Zgirski, Bartlomiej   +10 more
core   +1 more source

Hybrid Auxetic Architectures: Integrating Curvature‐Driven Design for Enhanced Mechanical Tunability and Structural Performance

Advanced Engineering Materials, EarlyView.
Curvature‐tuned auxetic lattices are designed, fabricated, and mechanically characterized to reveal how geometric curvature governs stretchability, stress redistribution, and Poisson's ratio evolution. Photoelastic experiments visualize stress pathways, while hyperelastic simulations quantify deformation mechanics.
Shuvodeep De, Giovanni Meli, Meysam Khaleghian, Anahita Emami   +3 more
wiley   +1 more source

An Improved Data Processing Algorithm for Spectrally Resolved Interferometry Using a Femtosecond Laser

Sensors
Spectrally resolved interferometry utilizing a femtosecond laser is widely employed for absolute distance measurement. However, deviations in the output time pulse of the conventional algorithm through inverse Fourier transform are inevitable. Herein, an
Tao Liu, Hiraku Matsukuma, Amane Suzuki, Ryo Sato, Wei Gao   +4 more
doaj   +1 more source

Dual-Comb Ranging

Engineering, 2018
Absolute distance measurement is a fundamental technique in mobile and large-scale dimensional metrology. Dual-comb ranging is emerging as a powerful tool that exploits phase resolution and frequency accuracy for high-precision and fast-rate distance ...
Zebin Zhu, Guanhao Wu
doaj   +1 more source

The Extreme Spin of the Black Hole in Cygnus X-1

, 2011
The compact primary in the X-ray binary Cygnus X-1 was the first black hole to be established via dynamical observations. We have recently determined accurate values for its mass and distance, and for the orbital inclination angle of the binary. Building
Arnaud, Keith A., Davis, Shane W., Gou, Lijun, McClintock, Jeffrey E., Narayan, Ramesh, Orosz, Jerome A., Reid, Mark J., Remillard, Ronald A., Steiner, James F., Xiang, Jingen   +9 more
core   +1 more source

Multimodal Mechanical Testing of Additively Manufactured Ti6Al4V Lattice Structures: Compression, Bending, and Fatigue

Advanced Engineering Materials, EarlyView.
In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart, Jonas Schmidt, Anastasiya Toenjes, Johanna Eisenträger   +3 more
wiley   +1 more source

Absolute distance measurement by dual-comb nonlinear asynchronous optical sampling

Optics Express, 2014
A dual-comb nonlinear asynchronous optical sampling method is proposed to simplify determination of the time interval and extend the non-ambiguity range in absolute length measurements. Type II second harmonic generation facilitates curve fitting in determining the time interval between adjacent pulses. Meanwhile, the non-ambiguity range is extended by
Hongyuan, Zhang, Haoyun, Wei, Xuejian, Wu, Honglei, Yang, Yan, Li   +4 more
openaire   +2 more sources