208 research outputs found
Classification of bad pixels of the Hawaii-2RG detector of the ASTROnomical NearInfraRed CAMera
ASTRONIRCAM is an infrared camera-spectrograph installed at the 2.5-meter
telescope of the CMO SAI. The instrument is equipped with the HAWAII-2RG array.
A bad pixels classification of the ASTRONIRCAM detector is proposed. The
classification is based on histograms of the difference of consecutive
non-destructive readouts of a flat field. Bad pixels are classified into 5
groups: hot (saturated on the first readout), warm (the signal accumulation
rate is above the mean value by more than 5 standard deviations), cold (the
rate is under the mean value by more than 5 standard deviations), dead (no
signal accumulation), and inverse (having a negative signal accumulation in the
first readouts). Normal pixels of the ASTRONIRCAM detector account for 99.6% of
the total. We investigated the dependence between the amount of bad pixels and
the number of cooldown cycles of the instrument. While hot pixels remain the
same, the bad pixels of other types may migrate between groups. The number of
pixels in each group stays roughly constant. We found that the mean and
variance of the bad pixels amount in each group and the transitions between
groups do not differ noticeably between normal or slow cooldowns.Comment: 11 pages, 7 Figures, 3 table
INNOVATIVE POTENTIAL OF THE ORGANIZATION AS A COMPETITIVE FORCE OF «ELENA FURS» FACTORY
The purpose of the article consists in the choice of the approach to the assessment of the innovative potential of the organization, since the quality of the assessment of innovation potential becomes the basis of the strategy of innovation transformation. Each approach is tested on the example of the fur factory «Elena Furs» and the feasibility and validity of the assessment of the innovative potential of the organization is checked. The article contains calculations confirming the availability of innovative capacity in the organization, but the use of these approaches did not allow us to identify specific areas for its development. The estimation of innovative potential from positions of competitive force in the external environment is offered that will allow to compare innovative potential with potential of participants of an environment and to develop strategic directions of development of innovative potential in the field of new technologies of production, marketing, personnel management, etc
INNOVATIVE POTENTIAL OF THE ORGANIZATION AS A COMPETITIVE FORCE OF «ELENA FURS» FACTORY
The purpose of the article consists in the choice of the approach to the assessment of the innovative potential of the organization, since the quality of the assessment of innovation potential becomes the basis of the strategy of innovation transformation. Each approach is tested on the example of the fur factory «Elena Furs» and the feasibility and validity of the assessment of the innovative potential of the organization is checked. The article contains calculations confirming the availability of innovative capacity in the organization, but the use of these approaches did not allow us to identify specific areas for its development. The estimation of innovative potential from positions of competitive force in the external environment is offered that will allow to compare innovative potential with potential of participants of an environment and to develop strategic directions of development of innovative potential in the field of new technologies of production, marketing, personnel management, etc
On the Influence of ''Red Leak''of Light Filters on the Brightness Estimates of Stars of Late Spectral Types Illustrated by the Observations of Rapid Variability of Symbiotic Stars
The results of modeling the dependence of the red leak of photometric filters
on various factors (color index V-R, luminosity class, interstellar reddening,
airmass and PWV) during observations of stars are presented. The error arising
from not taking into account the red leak in the case of filters used on the
0.6-m telescope of the CMO SAI can amount to 0.6-0.8 mag for late stars.
Algorithms for reducing observational data are presented for filters U and B.
The results of observations of the rapid variability of two symbiotic stars CH
Cyg and SU Lyn with cold components of very late spectral types are presented.
For CH Cyg, rapid variability was detected on both observation dates. Taking
into account the red leak effect, the amplitude in the B band was 0.10 mag on
November 6, 2019 and 0.19 mag on December 15, 2022, with a characteristic
variability time of about 20 minutes. For SU Lyn, no rapid brightness
variability was detected in the B band on February 2, 2023 (with an accuracy of
0.003 mag).Comment: 14 pages, 10 figures; accepted for publication in the Moscow
University Physics Bulletin (2024
Developing the structure of the personality's ecological culture
The article is devoted to a detailed analysis of the personality's ecological cultureand the description of its components. The author systematizes the elements of ecological culture, selected and described by modern researchers in the field of forming ecological culture and environmental consciousness of the person, systematizes them and establishes a functional relationship between them. The author considers the implementation of personal ecologically oriented activities to be the main purpose of forming ecological culture; therefore, the author proposes to enlarge the structure of ecological culture under consideration with such elements, as expert opinions and scientific environmental assessment (expert review). Copyright@ EM International
The Post-AGB Star IRAS 07253-2001: Pulsations, Long-Term Brightness Variability and Spectral Peculiarities
The observations and comprehensive study of intermediate initial mass stars
at the late stages of evolution, and after the asymptotic giant branch (AGB) in
particular, are of crucial importance to identify the common properties for the
stars of given group and to reveal binaries among them. This work aims to
investigate photometric and spectral peculiarities of a poorly studied post-AGB
candidate and infrared source IRAS 07253-2001. We present the new multicolour
photometry obtained with the telescopes of the Caucasian
mountain observatory and analyse it together with the data acquired by the All
Sky Automated Survey for SuperNovae. We report on the detection of multiperiod
brightness variability caused by pulsations. A beating of close periods, the
main one of 73 days and additional ones of 68 and 70 days, leads to amplitude
variations. We have also detected a long-term sine trend in brightness with a
period of nearly 1800 days. We suppose it to be orbital and IRAS 07253-2001 to
be binary. Based on new low-resolution spectroscopic data obtained with the
2.5-m telescope of the Caucasian mountain observatory in 2020 and 2023 in the
3500-7500 wavelength range we have identified spectral lines and
compiled a spectral atlas. We have found the [N II], [Ni II] and [S II]
forbidden emission lines in the spectrum and discuss their origin. The
H line has a variable double-peaked emission component. We have derived
preliminary estimates of the star's parameters and detected a variation of
radial velocity with a peak-to-peak amplitude of about 30 km s.Comment: 19 pages, 11 figures, 6 tables, Table 2 is only available in
electronic form, accepted to Astrophysical Bulleti
Models of civil servants’ digital competence: approaches to formation and evaluation
The purpose of the study is to analyze the Russian practice of assessing the digital competence of civil servants and substantiate proposals for improving approaches to assessing and developing the competencies under study. The article presents an analysis of the existing requirements for the competence of Russian civil servants, officially fixed and the compliance of such requirements with the current and promising areas of activity of state bodies and the development of modern society in the context of digital transformation. The authors studied approaches to the formation and application of civil servants’ digital competence models, including on the basis of the job regulations content analysis. In the course of the study, the authors conclude that there is sufficient uniformity of approaches in the executive authorities regarding the content of qualification requirements, which is predetermined by the implementation of the methodological tools of the Ministry of Labor and Social Protection of the Russian Federation. But professional knowledge and skills in the field of information and communication technologies, in fact, duplicate the basic qualification requirements and do not reflect the use of information and communication technologies specifics in various industries and the differentiation of employees’ functionality depending on categories and groups of positions. The authors substantiate proposals regarding the formation of a model of digital competence, namely, the need to take into account the division of requirements into basic and professional ones, the reflection of differentiation into categories and groups of civil service positions
Recurrent Symbiotic Nova T Coronae Borealis Before Outburst
The results of photometric and spectral observations of T CrB obtained in a
wide range of wavelengths in 2011-2023 are presented. We use the near-IR light
curves to determine a new ephemeris for
the times of light minima when the red giant is located between the observer
and the hot component. The flux ratio H/H varied from ~3 to ~8
in 2020-2023, which may be due to a change in the flux ratio between the X-ray
and optical ranges. It is shown that the value of H/H depends on
the rate of accretion onto the hot component of the system. Based on high-speed
follow-up observations obtained on June 8, 2023, we detected a variability of
the HeII line with a characteristic time-scale of ~25 min, the
amplitude of variability in the band was ~0.07. Simulations of the
near-IR light curves accounting for the ellipsoidal effect allowed us to obtain
the parameters of the binary system: the Roche lobe filling factor of the cool
component , the mass ratio , the orbit
inclination . A comparison of the light curve obtained in
2005-2023 with the 1946 outburst template made it possible to predict the date
of the upcoming outburst - January 2024.Comment: 15 pages, 3 tables, 8 figures, submitted to Astronomy Letter
Legal basis for medical examination of persons getting married under the laws of Russia and some foreign countries
The article discusses the problems of legal regulation of some aspects of marriage, namely the medical examination of future spouses. Considering that the issues of this requirement are both recommendatory (dispositive) and mandatory (imperative) in the countries, the authors, using the legislation of the Russian Federation and other countries as an example, analyzed the regulatory regulation of this institution and made recommendations on the ways of such problem solutio
Alumosilicate ceramic proppants based on natural refractory raw materials
The sintering-strengthening effect of the additions of the highly ferrous bauxite (with Fe[2]O[3] content of 20-25 % in the calcined state) in the compositions with refractory clays was established. It was found that in the temperature range 1350-1500°C the additions of bauxite in amounts of 10-40% have a fluxing effect due to the iron oxide introduced with bauxite in compositions with clay. An increasing the bauxite additive in the amount of 50-70% ensures its strengthening effect by increasing the total content of the mullite of the prismatic habit in the firing products of composites with clay. Preliminary clay and bauxite calcination at 900 °С and an increase in the content of bauxite additive up to 50-70% in compositions with clay allow to produce aluminosilicate proppants with a bulk density of 1.62-1.65 g/сm{3} and compressive strength up to 52 MPa
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