نتایج جستجو برای: bao
تعداد نتایج: 2941 فیلتر نتایج به سال:
The canonical redshift−scale factor relation, 1/a = 1 + z, is a key element in the standard ΛCDM model of the big bang cosmology. Despite its fundamental role, this relation has not yet undergone any observational tests since Lemaı̂tre and Hubble established the expansion of the Universe. It is strictly based on the assumption of the Friedmann–Lemaı̂tre–Robertson–Walker metric describing a locall...
In a paper recently published in ICALP 2005, Lipmaa, Wang and Bao identified a new essential security property, non-delegatability, of designated verifier signature (DVS) schemes. Briefly, in a non-delegatable DVS scheme, neither a signer nor a designated verifier can delegate the signing rights to any third party T without revealing their secret keys. We show that the Susilo-ZhangMu identity-b...
Numerical oscillation of the total energy can be observed when the KohnSham equation is solved by real-space methods to simulate the translational move of an electronic system. Effectively remove or reduce the unphysical oscillation is crucial not only for the optimization of the geometry of the electronic structure such as molecules, but also for the study of molecular dynamics. In this paper,...
In this Letter, we describe a new method to use baryon acoustic oscillations (BAO) to derive a constraint on the possible variation of the speed of light. The method relies on the fact that there is a simple relation between the angular diameter distance (D(A)) maximum and the Hubble function (H) evaluated at the same maximum-condition redshift, which includes speed of light c. We note the clos...
In radiation therapy treatment planning, the selection of appropriate radiation incidence directions is decisive for the quality of the treatment plan, both for appropriate tumor coverage and for enhance better organs sparing. However, the beam angle optimization (BAO) problem is yet to be solved in a satisfactory way. The objective of this research report is to discuss the benefits of using ra...
1 Experience-Dependent Over-Representation of Ultrasonic 2 Vocalization Frequencies in the Rat Primary Auditory Cortex 3 4 Heesoo Kim and Shaowen Bao 5 Helen Wills Neuroscience Institute, University of California, Berkeley, CA 94720 6 7 8 9 Abbreviated title: Experience shapes representation of vocalizations 10 11 12 13 14 15 Number of pages: 33 16 Number of figures: 7 17 Number of words in: 18...
In this paper, mechanistic aspects involved in the formation of N2O over Pt-BaO/Al2O3 and Rh-BaO/Al2O3 model NOx Storage-Reduction (NSR) catalysts are discussed. The reactivity of both gas-phase NO and stored nitrates was investigated by using H2 and NH3 as reductants. It was found that N2O formation involves the presence of gas-phase NO, since no N2O is observed upon the reduction of nitrates ...
Introduction Alkaline earth oxides (AEOs) such as BaO have received considerable attention for their application in the lean-burn engine NOx storage/reduction (NSR) technology [1]. Previous experimental investigations have indicated that barium nitrate is the most stable form of the stored NOx in Ba-containing NSR catalysts. Two distinctive types of barium nitrates, Ba(NO3)2, i.e. “surface” and...
As part of the Sloan Digital Sky Survey (SDSS) IV the extended Baryon Oscillation Spectroscopic Survey (eBOSS) will improve measurements of the cosmological distance scale by applying the Baryon Acoustic Oscillation (BAO) method to quasar samples. eBOSS will adopt two approaches to target quasars over 7500 deg. First, a “CORE” quasar sample will combine the optical selection in ugriz using a li...
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