CA II H and K filter photometry on the UVBY system. I - The standard system

Early in the 1950's Strömgren (1, 2, 3, 4, 5) introduced medium to narrow-band interference filter photometry at the McDonald Observatory. He used six interference filters to obtain two parameters of astrophysical interest. These parameters he calledlandc, for line and continuum hydrogen absorption. The first measured empirically the absorption line strength of Hβby means of a filter of half width 35Å centered on Hβand compared to the mean of two filters situated in the continuum near Hβ. The second index measured empirically the Balmer discontinuity by means of a filter situated below the Balmer discontinuity and two above it. He showed that these two indices could accurately predict the spectral type and luminosity of both B stars and A and F stars. He later derived (6) an indexmfrom the same filters. This index was a measure of the relative line blanketing near 4100Å compared to two filters above 4500Å. These three indices confirmed earlier work by many people, including Lindblad and Becker. References to this earlier work and to the systems discussed today can be found in Strömgren's article inBasic Astronomical Data(7).

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Research on standard system for mutual trust and mutual recognition based on PKI/CA in E-government

JOURNAL OF SHENZHEN UNIVERSITY SCIENCE AND ENGINEERING ◽

10.3724/sp.j.1249.2012.02113 ◽

2012 ◽

Vol 29 (2) ◽

pp. 113-117

Author(s):

Hai-long YAN ◽

Qiao YAN ◽

Ji-qiang FENG ◽

Xiao-zhuo CHENG

Keyword(s):

Mutual Recognition ◽

Standard System ◽

Mutual Trust

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Uncertainty analysis in least-square fitting according to next generation of GPS standard system

2010 2nd IEEE International Conference on Information Management and Engineering ◽

10.1109/icime.2010.5478212 ◽

2010 ◽

Author(s):

Zhu Liang-rong ◽

Zhang Ya

Keyword(s):

Uncertainty Analysis ◽

Least Square ◽

Standard System ◽

Next Generation ◽

Least Square Fitting

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Automorphism groups of arithmetically saturated models

Journal of Symbolic Logic ◽

10.2178/jsl/1140641169 ◽

2006 ◽

Vol 71 (1) ◽

pp. 203-216 ◽

Cited By ~ 3

Author(s):

Ermek S. Nurkhaidarov

Keyword(s):

Automorphism Group ◽

Automorphism Groups ◽

Open Subgroup ◽

Peano Arithmetic ◽

Standard System ◽

Permutation Groups ◽

Saturated Model ◽

Saturated Models ◽

Homogeneous Set ◽

Image Position

In this paper we study the automorphism groups of countable arithmetically saturated models of Peano Arithmetic. The automorphism groups of such structures form a rich class of permutation groups. When studying the automorphism group of a model, one is interested to what extent a model is recoverable from its automorphism group. Kossak-Schmerl [12] show that if M is a countable, arithmetically saturated model of Peano Arithmetic, then Aut(M) codes SSy(M). Using that result they prove:Let M1. M2 be countable arithmetically saturated models of Peano Arithmetic such that Aut(M1) ≅ Aut(M2). Then SSy(M1) = SSy(M2).We show that if M is a countable arithmetically saturated of Peano Arithmetic, then Aut(M) can recognize if some maximal open subgroup is a stabilizer of a nonstandard element, which is smaller than any nonstandard definable element. That fact is used to show the main theorem:Let M1, M2be countable arithmetically saturated models of Peano Arithmetic such that Aut(M1) ≅ Aut(M2). Then for every n < ωHere RT2n is Infinite Ramsey's Theorem stating that every 2-coloring of [ω]n has an infinite homogeneous set. Theorem 0.2 shows that for models of a false arithmetic the converse of Kossak-Schmerl Theorem 0.1 is not true. Using the results of Reverse Mathematics we obtain the following corollary:There exist four countable arithmetically saturated models of Peano Arithmetic such that they have the same standard system but their automorphism groups are pairwise non-isomorphic.

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Study on the Adaptability of Standard System of Industrialized Building in China

ICCREM 2017 ◽

10.1061/9780784481066.025 ◽

2017 ◽

Author(s):

Yan Lei ◽

Shoujian Zhang ◽

Wei Huang

Keyword(s):

Standard System

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Demonstration of a 10 V programmable Josephson voltage standard system based on a multi-chip technique

Superconductor Science and Technology ◽

10.1088/0953-2048/21/3/035002 ◽

2008 ◽

Vol 21 (3) ◽

pp. 035002 ◽

Cited By ~ 12

Author(s):

T Yamada ◽

H Sasaki ◽

H Yamamori ◽

A Shoji

Keyword(s):

Standard System ◽

Voltage Standard

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Maize grain moisture content correction: From nonstandard to standard system

Biosystems Engineering ◽

10.1016/j.biosystemseng.2021.01.013 ◽

2021 ◽

Vol 204 ◽

pp. 212-222

Author(s):

Shang Gao ◽

Bo Ming ◽

Lu-lu Li ◽

Rui-zhi Xie ◽

Ke-ru Wang ◽

...

Keyword(s):

Moisture Content ◽

Standard System ◽

Grain Moisture ◽

Maize Grain

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Genetic Mechanisms in Human Disease. Chromosomal Aberrations. Edited by M. F. Ashley Montague. Springfield, Illinois, Thomas, 1961

PEDIATRICS ◽

10.1542/peds.29.4.635 ◽

1962 ◽

Vol 29 (4) ◽

pp. 635-635

Author(s):

Josef Warkany

Keyword(s):

Chromosomal Aberrations ◽

Human Disease ◽

Standard System ◽

Chromosomal Anomalies ◽

Mitotic Chromosomes ◽

Medical Journals ◽

The Status ◽

Genetic Mechanisms

It was a commendable effort to collect in a single volume many of the important contributions that in recent years have demonstrated chromosomal anomalies associated with constitutional disorders in man. The book contains 55 articles on this subject, all of them published previously in the Lancet or in other medical journals. Two introductory chapters deal with the status of cytogenetics in medicine and with the standard system of nomenclature of human mitotic chromosomes. The book ends with a chapter "Chromosomes for Beginners" reprinted from the Lancet.

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