Results 61 to 70 of about 207,828 (288)

A New Nonparametric Test for Two Sample Multivariate Location Problem with Application to Astronomy

Journal of Statistical Theory and Applications (JSTA), 2019
This paper provides a nonparametric test for the identity of two multivariate continuous distribution functions when they differ in locations. The test uses Wilcoxon rank-sum statistics on distances between observations for each of the components and is ...
Soumita Modak, Uttam Bandyopadhyay
doaj   +1 more source

Spin‐Orbit Torque Induced by Switchable Crystal Inversion Symmetry Breaking

Advanced Materials, EarlyView.
An exotic crystal inversion symmetry breaking in SrRuO3/BiFeO3 heterostructure is revealed, and it can be reversibly manipulated by the ferroelectric polarization of BiFeO3. This crystal inversion symmetry breaking can dramatically enhance the spin‐orbit torque efficiency in the SrRuO3 layer by more than 60%, providing an alternative to design an ...
Zhenyi Zheng, Shu Shi, Zhongran Liu, Qihan Zhang, Naafis Ahnaf Shahed, Himanshu Mavani, Guowei Zhou, Qian Chen, Cheng Zhang, Zhanqi Zhou, Tieyang Zhao, Rui Xiao, Lanxin Jia, Liang Liu, Evgeny Y. Tsymbal, Xiaohong Xu, He Tian, Jingsheng Chen   +17 more
wiley   +1 more source

Far-Infrared to Millimeter Astrophysical Dust Emission. II: Comparison of the Two-Level Systems (TLS) model with Astronomical Data

, 2011
In a previous paper we proposed a new model for the emission by amorphous astronomical dust grains, based on solid-state physics. The model uses a description of the Disordered Charge Distribution (DCD) combined with the presence of Two-Level Systems ...
Agladze, Anderson, Andriesse, Benoît, Bernard, Bot, Boudet, Boulanger, Bösch, C. Mény, D. Paradis, Dale, Dickey, Dickinson, Draine, Dupac, Dupac, Dupac, Désert, Finkbeiner, Finkbeiner, Fitzgerald, Fitzgerald, Galliano, Hubbard, J.-P. Bernard, Jarosik, Johnstone, Kemper, Malinen, Mennella, Miville-Deschênes, Mény, Paradis, Paradis, Phillips, Phillips, Planck collaboration, Planck collaboration, Planck collaboration, Planck collaboration, Planck collaboration, Planck collaboration, Planck collaboration, Reach, Schlegel, Schlömann, Shetty, Stepnik, V. Gromov, Veneziani, Vinogradov   +51 more
core   +1 more source

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

Utilization of Image Intensifiers in Astronomy

Acta Polytechnica, 2012
In this paper we present the properties of image intensifiers, used together with fast TV cameras for astronomical purposes within the MAIA project(Meteor Automatic Imager and Analyser, primarily focused on observing meteoric events with high time ...
S. Vítek, K. Fliegel, P. Páta, P. Koten   +3 more
doaj  

Single Image Super-Resolution Using Compressive Sensing With a Redundant Dictionary

IEEE Photonics Journal, 2015
In medical imaging and astronomical observation, high-resolution (HR) images are urgently desired and required. In recent years, many researchers have proposed various ways to achieve the goal of image super-resolution (SR), ranging from simple linear ...
Yicheng Sun, Guohua Gu, Xiubao Sui, Yuan Liu, Chengzhang Yang   +4 more
doaj   +1 more source

Evaluation of the surface strength of glass plates shaped by hot slumping process

, 2014
The Hot Slumping Technology is under development by several research groups in the world for the realization of grazing-incidence segmented mirrors for X-ray astronomy, based on thin glass plates shaped over a mould at temperatures above the ...
Basso, S., Bavdaz, M., Borsa, F., Citterio, O., Civitani, M., D'Este, A., Dall'Igna, R., Ghigo, M., Martelli, F., Pareschi, G., Parodi, G., Proserpio, L., Salmaso, B., Silvestri, M., Sironi, G., Spiga, D., Tagliaferri, G., Wille, E.   +17 more
core   +1 more source

Bioresorbable Mo–W Electrodes: Toward an Extended Operational Lifetime Through Controlled Alloying and Oxide Coating Engineering

Advanced Materials Interfaces, EarlyView.
Bioresorbable electrochemical sensors face instability in biofluids. Although alloys can mitigate rapid in vivo dissolution, Mo–W remains underexplored for sensing. This work engineers Mo–W films with a nanocrystalline oxide coating, improving stability and enabling reliable oxygen and pH sensing for up to 10 days, highlighting their potential for ...
C. Fernandes, Filippo Franceschini, Kitty Baert, Jon Ustarroz, I. Taurino   +4 more
wiley   +1 more source

АSTERISM AND CONSTELLATION: TERMINOLOGICAL DILEMMAS

Zbornik Radova: Geografski institut "Jovan Cvijić", 2017
In contemporary astronomical literature, there is no uniform definition of the term asterism. This inconsistency is the consequence of differences between traditional understanding of the term constellation, from the standpoint of the naked eye astronomy,
Zorica Prnjat, Milutin Tadić
doaj   +2 more sources

Photometry of two unusual A supergiant systems in the Small Magellanic Cloud

, 2010
We present multiwavelength broadband photometry and V, I time resolved photometry for two variable bright stars in the SMC, OGLE004336.91-732637.7 (SMC-SC3) and OGLE004633.76-731204.3 (SMC-SC4).
Kołaczkowski, Z., Mennickent, R. E., Pietrzyński, G., Smith, M., Soszyński, I.   +4 more
core   +1 more source