Results 21 to 30 of about 17,102,650 (298)

The period-luminosity and period-radius relations of Type II and anomalous Cepheids [PDF]

open access: yes, 2017
Method: In an accompanying paper (arXiv: 1705.00886) we determined luminosity and effective temperature for the 335 T2Cs and ACs in the LMC and SMC discovered in the OGLE-III survey, by constructing the spectral energy distribution (SED) and fitting this
Groenewegen, Martin A. T.   +1 more
core   +2 more sources

Zahra Zahedi Hospital in Damagh (1948-1979) [PDF]

open access: yesJournal of Research on History of Medicine, 2022
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Reza Karami
doaj  

PERIODIC ENVIRONMENTS AND PERIODIC HARVESTING

open access: yesNatural Resource Modeling, 2003
ABSTRACT. We consider autonomous population models under periodic harvesting and population models in periodic environments and seek conditions under which there is an asymptotically stable periodic solution.
Brauer, Fred, Sánchez, David A.
openaire   +2 more sources

Periodic Modules with Large Periods [PDF]

open access: yesProceedings of the American Mathematical Society, 1979
Let G be a nonabelian group of order p 3 {p^3} and exponent p, where p is an odd prime. Let K be a field of characteristic p. In this paper it is proved that there exist periodic KG-modules whose periods are 2p. Some examples of such modules are constructed.
openaire   +2 more sources

Cygnus X-2, super-Eddington mass transfer, and pulsar binaries

open access: yes, 1999
We consider the unusual evolutionary state of the secondary star in Cygnus X-2. Spectroscopic data give a low mass ($M_2 \simeq 0.5 - 0.7\msun$) and yet a large radius ($R_2 \simeq 7\rsun$) and high luminosity ($L_2 \simeq 150\lsun$).
A. R. King, H. Ritter, Period (p D
core   +2 more sources

On period minimal pseudo-Anosov braids [PDF]

open access: yes, 2008
A family of period minimal pseudo-Anosov braids, one for each pair of Farey neighbors in [0, 1/2], is ...
De Carvalho, Andre   +2 more
core   +1 more source

The Private Business During the New Economic Policy (on the Materials of the Volga Region)

open access: yesВестник Волгоградского государственного университета. Серия 4. История, регионоведение, международные отношения, 2017
he development of the private business had the regional features in the Volga region during the new economic policy. The originality of the study lies in the fact that it is conducted on the example of a large Russian region – the Volga region.
Sergey V. Vinogradov   +2 more
doaj   +1 more source

Periodic and almost periodic flows of periodic Ito equations [PDF]

open access: yesMathematica Bohemica, 1992
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

About the temporary load on arched structures made of corrugated metal under a road embankment [PDF]

open access: yesДороги і мости
Introduction. The issue of features of formation and practical calculation of temporary moving load from vehicles on arched structures made of corrugated metal under the road embankment is considered.
Volodymyr Abramov
doaj   +1 more source

Categorization and Characterization of Time Domain CMOS Temperature Sensors

open access: yesSensors, 2020
Time domain complementary metal-oxide-semiconductor (CMOS) temperature sensors estimate the temperature of a sensory device by measuring the frequency, period and/or delay time instead of the voltage and/or current signals that have been traditionally ...
Sangjin Byun
doaj   +1 more source

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