41 research outputs found
DIGITAL EDUCATIONAL ENVIRONMENT AS A TOOL OF SYSTEM CHANGES IN THE TEACHER’S PROFESSIONAL ACTIVITY
Purpose: Social and cultural prerequisites of Russia’s transition to an open information society have predetermined new requirements for graduates of modern educational organizations, ready for communicative activities in a digital educational environment. Informatization of education is characterized by increasing virtualization of the educational process and, as a consequence, the predominance of fragmented thinking, and increase in the gap between traditional and innovative educational technologies.
Methodology: The basis of the digital educational environment in the context of the use of knowledge management technologies can be specialized knowledge management systems that combine knowledge of related scientific disciplines, which should provide integration, accumulation, and support, as well as the organization of access to knowledge of the educational environment. A distinctive feature of the development of mankind at the present stage is the transition to information society in which information and information processes are becoming one of the most important components of human life and society.
Result: The development of the global process of informatization of society leads to the formation of not only the new information environment for people but also new, information way of their life and professional activities. Many researchers as the most acute problem of modern education called the mismatch of software, including for educational purposes, to high technical characteristics of computers, resulting in extremely low efficiency of computer use in training. Critically assessing the effectiveness of the existing software of the educational process and the ways of its development, we see the prospects for a radical change in the situation in the orientation to the use of knowledge management technologies that use software products that can be changed, adapting to the needs of the user and, in particular, to the didactic tasks of training.
Applications: This research can be used for universities, teachers, and students.
Novelty/Originality: In this research, the model of Digital Educational Environment as a Tool of System Changes in the Teacher’s Professional Activity is presented in a comprehensive and complete manner
Lifelong professional education in the Russian federation: Personal aspect
© 2016 The Author(s).The article analyzes the problem of realization of the postulate of "lifelong education" in the field of professional education in Russia, reveals its importance for the development of personality of a future specialist. A brief overview and the results of the implementation of this principle in the process of professional training of students of Shadrinsk State Pedagogical University, the Branch of the Industrial University of Tyumen, Bashkir State Pedagogical University are presented
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
Monitoring evolved stars for binarity with the HERMES spectrograph
Binarity is often invoked to explain peculiarities that can not be explained
by the standard theory of stellar evolution. Detecting orbital motion via the
Doppler effect is the best method to test binarity when direct imaging is not
possible. However, when the orbital period exceeds the duration of a typical
observing run, monitoring often becomes problematic. Placing a high-throughput
spectrograph on a small semi- robotic telescope allowed us to carry out a
radial-velocity survey of various types of peculiar evolved stars. In this
review we highlight some findings after the first four years of observations.
Thus, we detect eccentric binaries among hot subdwarfs, barium, S stars, and
post- AGB stars with disks, which are not predicted by the standard binary
interaction theory. In disk objects, in addition, we find signs of the on-
going mass transfer to the companion, and an intriguing line splitting, which
we attribute to the scattered light of the primary.Comment: To appear in the proceedings of the conference "Setting a new
standard in the analysis of binary stars", A. Tkachenko (ed.), European
Astron. Soc. Publ. Se
Debating capabilities of biochemical markers of liver function in patients with alcoholic liver cirrhosis
Introduction. The diagnosis of alcohol-related liver disease is limited by the lack of a tool to reliably identify whether the present deterioration in the patient’s condition is due to alcohol consumption or other causes.Purpose. to conduct a comparative assessment of the clinical and diagnostic significance of liver function biochemical indicators (AST, ALT, GGT, ALP) and their calculated derivatives (AST/ALT, GGT/ALP, GGT/GGTn, ALP/ALPn) as markers of alcohol consumption in patients with alcoholic liver cirrhosis.Material and methods. The observational study included 112 men over 18 years of age with alcohol-related liver cirrhosis. The patients were assessed the severity of liver cirrhosis according to the Child-Pugh scale, performed general and biochemical blood tests, coagulation test, assessment of the fact of alcohol consumption by the level of phosphatidylethanol. An analysis was made of the relationship between alcohol consumption and changes in laboratory parameters of liver function, with the determination of their sensitivity and specificity.Results. Patients with Child-Pugh B cirrhosis who consumed alcohol on phosphatidylethanol had higher levels of plasma albumin, GGT, and lower values of creatinine, direct and total bilirubin, urea, and aPTT compared with patients who did not drink alcohol (p < 0.05). Alcohol-drinking patients with class C cirrhosis have higher ALT levels compared with abstinent patients with the same severity of cirrhosis (p < 0.05). The relationship between the fact of alcohol consumption, determined by the level of phosphatidylethanol, and the ratio of GGT of patients to the normal GGT value, as well as between the ratio of GGT to alkaline phosphatase and the degree of increase in GGT, turned out to be statistically significant. To assess the fact of alcohol consumption, the level of serum GGT > 65 IU/ l (75.5%) has the highest sensitivity, the highest specificity is the ratio of the patient’s GGT to the normal value of GGT > 2 (82.9%).Conclusion. Compared with the known 100% sensitivity and > 92% specificity of Peth as a alcohol biomarker, among the biochemical indicators of liver function and their calculated derivatives, GGT > 65 IU/l have the greatest sensitivity or specificity (respectively, 75.5% and 65%) and GGTnorm. > 2 (37.7% and 82.9%, respectively), which makes it possible to use the totality of these parameters as an indicator of the continued impact on the patient of the main etiological factor of alcohol-related liver cirrhosis in the routine practice of most medical organizations of the Russian Federation
Pulsations and Long-Term Light Variability of Three Candidates to Protoplanetary Nebulae
We present new photometric data and analysis of the long-duration UBV
photoelectric observations for three candidates to protoplanetary objects -
F-supergiants with IR-excesses located at large galactic latitudes, IRAS
18095+2704, IRAS 19386+0155, and IRAS 19500-1709. All three stars have revealed
quasiperiodic low-amplitude variabilities caused by pulsations observed against
the long-term trends of brightnesses. For IRAS 18095+2704=V887 Her we have
found a pulsation period of 109 days and a linear trend of brightness under the
constant colours if being averaged over the year timescale. The light curve of
IRAS 19386+0155=V1648 Aql over 2000-2008 can be approximated by a wave with a
main period of 102 days which is modulated by close frequency, with a period of
98 days, that results in brightness oscillations with a variable amplitude.
V1648 Aql has also shown synchronous reddening together with a persistent rise
of brightness in the V-band. IRAS 19500-1709=V5112 Sgr experiences irregular
pulsations with the periods of 39 and 47 days. The long-term component of the
variability of V5112 Sgr may be related to the binary character of this star.Comment: 11 pages, 6 figures, accepted for publication in Pis'ma Astron. Z
Assessment of the temporomandibular joint condition using two-dimensional ultrasound scanning and doppler ultrasonography methods in patients with chronic inflammatory periodontal diseases
Introduction. Currently, dentists are increasingly detecting changes in the temporomandibular joint in patients with chronic inflammatory periodontal disease.Aim of the study. To carry out a comprehensive dynamic assessment of the temporomandibular joint (TMJ) condition and the registration of regional blood flow using two-dimensional ultrasound scanning to improve the efficiency of diagnostics of inflammatory periodontal diseases.Materials and methods. The study included 2 groups of patients: group 1 (control) consisted of 20 volunteers aged 20–25; Group 2 consisted of 52 people aged 25–45 years with moderate chronic periodontitis. For TMJ ultrasound and Doppler ultrasound, a portable ultrasound scanner LogicScan 128 with an HL-10 linear ultrasound transducer with an operating frequency of 5 to 12 MHz was used.Results and discussion. During ultrasound examination of the temporomandibular joint and measuring the size of the joint space in patients with moderate chronic periodontitis in a state of relative physiological rest, the following values were obtained: in the anterior region – 2.3 ± 0.5 mm; in the upper section – 1.6 ± 0.6 mm; in the posterior section – 1.8 ± 0.3 mm. We also measured the area of the temporomandibular joint disc in various positions. According to ultrasound data, an increase in the size of the joint space from 12.2 to 16.1% and an increase in the area of the articular disc by 17.1 to 36.7% were found in patients with chronic periodontitis. When assessing the trajectory of the articular track, motion delay and joint wedging are determined. In addition, in the color Doppler mapping (CDM) mode, the speed and index indicators of Doppler ultrasonography of the external carotid and temporal arteries were calculated.Conclusions. Modern diagnostic methods of ultrasound and Doppler mapping, assessing the hemodynamics and functional state of the TMJ, allow early diagnosis of changes in order to prevent the development of TMJ disorders in patients with chronic inflammatory periodontal diseases
Long-term multiwavelength monitoring and reverberation mapping of NGC 2617 during a changing-look event
We present the results of photometric and spectroscopic monitoring campaigns
of the changing look AGN NGC~2617 carried out from 2016 until 2022 and covering
the wavelength range from the X-ray to the near-IR. The facilities included the
telescopes of the SAI MSU, MASTER Global Robotic Net, the 2.3-m WIRO telescope,
Swift, and others. We found significant variability at all wavelengths and,
specifically, in the intensities and profiles of the broad Balmer lines. We
measured time delays of ~ 6 days (~ 8 days) in the responses of the H-beta
(H-alpha) line to continuum variations. We found the X-ray variations to
correlate well with the UV and optical (with a small time delay of a few days
for longer wavelengths). The K-band lagged the B band by 14 +- 4 days during
the last 3 seasons, which is significantly shorter than the delays reported
previously by the 2016 and 2017--2019 campaigns. Near-IR variability arises
from two different emission regions: the outer part of the accretion disc and a
more distant dust component. The HK-band variability is governed primarily by
dust. The Balmer decrement of the broad-line components is inversely correlated
with the UV flux. The change of the object's type, from Sy1 to Sy1.8, was
recorded over a period of ~ 8 years. We interpret these changes as a
combination of two factors: changes in the accretion rate and dust recovery
along the line of sight.Comment: 14 pages, 15 figures, accepted by the MNRA
Lifelong professional education in the Russian federation: Personal aspect
© 2016 The Author(s).The article analyzes the problem of realization of the postulate of "lifelong education" in the field of professional education in Russia, reveals its importance for the development of personality of a future specialist. A brief overview and the results of the implementation of this principle in the process of professional training of students of Shadrinsk State Pedagogical University, the Branch of the Industrial University of Tyumen, Bashkir State Pedagogical University are presented
Lifelong professional education in the Russian federation: Personal aspect
© 2016 The Author(s).The article analyzes the problem of realization of the postulate of "lifelong education" in the field of professional education in Russia, reveals its importance for the development of personality of a future specialist. A brief overview and the results of the implementation of this principle in the process of professional training of students of Shadrinsk State Pedagogical University, the Branch of the Industrial University of Tyumen, Bashkir State Pedagogical University are presented