bluuebunny/crossref_metadata_2025 huggingface dataset:
Дорожные ритуалы и запреты в русской и калмыцкой культуре в аспекте благополучия
Authors:   Gorodovikov Kalmyk State University (11, Pushkin St., 358000 Elista, Russian Federation), Shkurskaya Ekaterina A.
Published: April 2021

Introduction. The road as a metatext accumulates variable forms of mobility which are determined by different ways of mastering alien territories. The article deals with departure in a broad sense — as pilgrimage and development of new lands. The relevance of the work is determined by the comparative approach to the study of the road tradition in Russian and Kalmyk linguocultures. Goals. The article seeks to identify and systematize protective road rituals and taboos in the Russian and Kalmyk traditions in the aspect of well-being. Materials and Methods. The study focuses on works by T. Shchepanskaya, A. Bayburin, V. Korshunkov, and N. Zhukovskaya. The main research methods employed are the comparative-historical and retrospective ones which make it possible to distinguish general and particular road safety rituals and prohibitions in Russian and Kalmyk cultures. Chronologically, the study covers the period between the late 18th and early 20th centuries. Results. The mastering of new territories is associated with overcoming boundaries of ‘own-alien’ space, which results in that departure both in Russian and in Kalmyk cultures is characterized by increased semiotics reflected in protective rituals and certain related actions to be avoided thereto. In Russian culture, protective rituals of safety include as follows: crying/gulba, feasts, the ‘sit-down-on-the-path’ custom, farewell blessings when leaving the house. The road ritual taboos comprise any repeat of already accomplished actions, resumption of household cares, verbal prohibitions dealing with the direction. In the Kalmyk cultural tradition, the ritual of departure is accompanied by uttering good wishes and the ritual of development of new territories. It was prohibited to settle near the roads. Conclusions. Russian protective road rituals are aimed at overcoming the border of the ‘own-alien’, which can be explained by the sedentary self-consciousness of Russians. In the Kalmyk linguistic and cultural tradition, the road ritual and its ceremonial part are associated with the spatial development of the surrounding world which is manifested not only in movement but also in stops.
Radiometric and seismic study of Chidvinskaya kimberlite pipe (Arkhangelsk diamondiferous province, North of the East European Craton, Russia)
Authors: Georgij Kiselev , Konstantin Danilov , Evgenij Yakovlev , Sergej Druzhinin
Published: April 2021

Surface geophysical measurements were carried out on Chidvinskaya diamond pipe of the Arkhangelsk diamondiferous province (North of the East European Craton, Russia). Geophysical measurements included a high-precision gamma-spectrometric survey, radon emanation survey in soil air, and microseismic sounding method. Radiometric measurements were used to found radioactivity anomalies of the surface layer over the Chidvinskaya pipe which could be a result of impact of the kimberlite body on a host medium. Deep structure of the kimberlite pipe and host medium was imaged by means of microseismic sounding method. Results indicate that the pipe appears as a high-velocity body. The host medium is low-velocity that is typical for rocks with excessive fissuring. Increased values of total gamma-ray radiation of near surface layer are observed within the pipe contour and exceeded the background values by 2-4 times. Anomalous radon emanation in the soil air was found at the pipe boundaries. According to the microseismic sounding data near-contact zone is a gas-penetrable structure with excessive fissuring. The results of the used methods are in good agreement with each other. The proposed complex of methods has allowed to identify the pipe distinctive feature.
Guadalajara, Mexico, Earthquake Sequence of December 2015 and May 2016: Source, Q, and Ground Motions
Authors: Krishna Singh Shri , Arroyo Danny , Pérez-Campos Xyoli , Iglesias Arturo , Hugo Espíndola Víctor , Ramírez Leonardo , Pérez Citlalli , Sandoval Héctor
Published: April 2021

We analyze an earthquake sequence which occurred 24 km NNW from Guadalajara Cathedral. The activity began on 15 December, 2015 with an Mw4.1 earthquake and resumed, again, on 11 May, 2016 when the largest earthquake of the sequence, Mw4.8, occurred. The earthquakes were recorded in the city by two accelerographs and at larger distances by broadband seismographs. The source region of the sequence is located in the north of the broad junction formed by NW-SE trending Tepic-Zacoalco rift, N-S trending Colima rift, and E-W trending Chapala rift. The focal mechanism of the largest event is characterized by: strike Ï• = 21Âº, dip Î´= 49Âº, and rake Î»= -86Âº, with horizontal tensional axis trending 110Âº. This mechanism is not consistent with NE-SW direction of motion measured on fault strike by Barrier et al. (1990) ~ 35 km WNW of Guadalajara. It also differs from the mechanism reported in a previous study for a seismic sequence in the Zacoalco rift about 60 km south of Guadalajara. Similarities among recorded waveforms at the accelerographic stations suggest that the mechanism of other events in the sequence were similar and the events were located in a small volume, probably 1 to 2 km in radius. From the analysis of the recordings of the 11 May shock along the Trans-Mexican Volcanic Belt, from Ceboruco volcano to the west and Popocatepetl volcano to the east, the attenuation parameter Q as 141f 0.63 was estimated. The earthquake on 11 May was felt very strongly in the city and produced peak ground acceleration (PGA) reaching 80 cm/s2. Relatively large earthquakes have been reported in the region; e.g., on 11 February, 1875 near the town of San Cristobal de la Barranca, about 40 km NNW of Guadalajara, therefore, the interest on using recordings from accelerographic stations to estimate peak ground motion parameters for scenario earthquakes of Mwâ‰¤ 6.0 using random vibration theory (RVT) and empirical Green’s function (EGF) techniques. From RVT simulations, the expected PGA, peak ground velocity (PGV), and peak ground displacement (PGD) at the accelerographic stations from an Mw6.0 earthquake in the source region of the sequence are 195 cm/s2, 10 cm/s, and 3 cm, respectively. The predictions from the EGF technique are somewhat higher but still within a factor of two of the RVT predictions.
Detection of total water mass changes in the Patagonian glaciers area by satellite gravimetry
Authors: Pereira Ayelen , Cornero Cecilia , Oliveira Cancoro de Matos Ana Cristina , Pacino Maria Cristina , Blitzkow Denizar
Published: April 2021

Despite present efforts to better understand glacier changes and their trends, the satellite gravimetry is a powerful tool still not applied in depth to study relatively large areas in the Andes of Argentina and Chile.

In this work the mass variations of the Patagonian Icefield are analyzed together with the decrease trends of the ice layer in the region. The purpose of this study is to demonstrate the GRACE satellite mission (Gravity Recovery and Climate Experiment) ability to detect the water storage changes over the glaciers area. Furthermore, the variations of the hydrometric level of some Patagonian lakes were monitored by combining satellite altimetry data and in situ measurements with the observed water mass variations.

Data from GRACE was used to estimate gravity trends, and high-resolution CSR GRACE RL05 mascon solutions were used to analyze the water storage change of the icefields in the region under study for the 2002-2017 period.

Virtual stations from satellite altimetry obtained from a lake database and also hydrometric height data from in situ stations, located at Patagonian lakes in Argentina and Chile, were also used in order to compare the TWS from GRACE to the water level of the specific lakes. Additionally, correlation coefficients were determined at each station. 

The results show a significant water storage decrease in the Icefield area, and they also demonstrate that the ice melt in southern Patagonia (of about 6 cm/year) tends to be more pronounced than in the northern region.
Emotional labor strategies mediate the relationship between psychological empowerment and burnout of frontline hotel employees
Authors: Li Min , Zhao Ziyu , Cui Lijuan
Published: April 2021

We examined the relationships among psychological empowerment, emotional labor strategies, and job burnout of frontline hotel employees with reference to conservation of resources theory and the job demands–resources model. A sample of 414 employees from a Chinese chain hotel
was recruited to take part in this study. There was a significant negative correlation between psychological empowerment and job burnout for these frontline hotel employees. Furthermore, the emotional labor strategies of deep acting and automatic regulation played partial mediating roles in
the relationship between psychological empowerment and job burnout, which has implications for the development of intervention mechanisms and work practices for addressing burnout.
GROWTH MINDSET, SCHOOL CONTEXT, AND MATHEMATICS ACHIEVEMENT IN INDONESIA: A MULTILEVEL MODEL
Authors: Kismiantini Kismiantini , Setiawan Ezra Putranda , Pierewan Adi Cilik , Montesinos-Lopez Osval Antonio
Published: April 2021

Shifting students to a growth mindset can increase their achievements. Nevertheless, only a few studies have been conducted on this topic in developing countries. This study aims to examine the relationship between growth mindset, school context, and mathematics achievement in Indonesia. Using a multilevel model on the PISA 2018 data, this study explored the variables that contributed to mathematics achievement. The multilevel analysis showed that students’ gender, growth mindset, index of economic social, and cultural status were statistically significant predictors of students’ mathematics achievement. Girls have been reported to have a higher mathematics achievement than boys in Indonesia. As the students’ growth mindset increases, so do their mathematics achievement.
Generation of Vertical Fine Structure by the Internal Waves with the Regard for Turbulent Viscosity and Diffusion
Authors: Demyshev S. G. ,   Marine Hydrophysical Institute, Russian Academy of Science, Sevastopol, Russia, Evstigneeva N. A. ,   Marine Hydrophysical Institute, Russian Academy of Sciences, Sevastopol, Russia, Alekseev D. V. ,   Marine Hydrophysical Institute, Russian Academy of Sciences, Sevastopol, Russia, Dymova O. A. ,   Marine Hydrophysical Institute, Russian Academy of Sciences, Sevastopol, Russia, Miklashevskaya N. A. ,   Marine Hydrophysical Institute, Russian Academy of Sciences, Sevastopol, Russia
Published: April 2021

Purpose. The study is aimed at evaluating effectiveness of the procedure of the observational data assimilation using the Kalman filter algorithm as compared to sequential analysis of the hydrophysical fields based on the optimal interpolation method, and at analyzing the mesoscale features of coastal circulation near the western Crimea coast and in the Sevastopol region. Methods and Results. Based on the hydrodynamic model adapted to the Black Sea coastal zone conditions including the open boundary and on the temperature and salinity data from the hydrological survey in 2007, the dynamic and energy characteristics of the Black Sea coastal circulation were calculated with high spatial resolution (horizontal grid is ~ 1.6 × 1.6 km and 30 vertical horizons). The hydrophysical fields were reconstructed using two algorithms of data assimilation: the sequential optimal interpolation and the modified Kalman filter. The kinetic energy changed mainly due to the wind action, vertical friction and the work of pressure forces; the potential energy – due to the potential energy advection and the horizontal turbulent diffusion. The following circulation features were reconstructed: the anticyclonic eddy with the radius about 15 km in the Kalamita Bay in the water upper layer, the anticyclonic eddy with the radius about 15 km between 32.2 and 32.6° E in the whole water layer, the intense current near Sevastopol and along the Crimea western coast directed to the north and northwest, and the submesoscale eddies of different signs of rotation in the upper layer. Conclusions. It is shown that having been taken into account, heterogeneity and non-isotropy of the error estimates of the temperature and salinity fields relative to the correlation function lead to qualitative and quantitative differences in the hydrodynamic fields (amplification of currents, change of the currents’ direction and eddy formations were better pronounced). At the same time, the mean square errors of the thermohaline fields’ estimates decreased. Formation of the anticyclonic eddy with the radius about 15 km in the Kalamita Bay could be related to the current shear instability. Submesoscale eddies with the diameters less than 5 km were formed when the current flowed around the coastline and the bottom topography inhomogeneities.
Assessing the Power of Intensity Interaction between the Solid and Fluid Phases in the Unconsolidated Water-Saturated Sandy Marine Sediments at Shear Wave Propagation
Authors: Lisyutin V. A. ,   Sevastopol State University, Sevastopol, Russian Federation, Lastovenko O. R. ,   Sevastopol State University, Sevastopol, Russian Federation
Published: April 2021

Purpose. Propagation of a shear wave in sandy marine sediments is considered. The acoustic properties of a shear wave are the phase velocity and the attenuation coefficient. It is known that in dry sandy sediments, the attenuation coefficient is directly proportional to frequency. In the saturated mediums, there are the deviations from this law that implies existence of two physical mechanisms of losses – the intergranular friction and viscous loss. The study is aimed at developing a two-phase theoretical model of the shear wave propagation in the unconsolidated marine sediments, and at identifying the dissipative effects caused by the fluid relative movement in the pore space. Methods and Results. The intergranular friction is modeled using a springpot, which represents an element combing conservative properties of a spring and dissipative ones of a dashpot. The equation of motion is applied, where a part of fluid is assumed to be associated with the media solid phase and another part is considered to be mobile. For a harmonic displacement, the equations of state and the equation of motion yield a new two-phase dispersion relation (the theory of Grain Shearing + Effective Density, or GS + EDs, for short). The results of the GS + EDs theory are compared with the data of the velocity and attenuation measurements taken from the open sources. It is shown that during propagation of the compressional and shear waves, the mechanisms of interaction between the granules, and between the granules and fluid are not similar. Character of the changes in the grain-to-grain friction parameters when the pore space is saturated with fluid, is analyzed. Conclusions. Manifestation of the dissipative effects resulting from the pore saturation with fluid depends on the density of the granules packing. In case of a dense packing, there are no conditions for the fluid relative movement, and the sandy sediments exhibit the property of constant Q-factor. If the packing is loose, the viscous losses make a significant contribution, and the attenuation frequency dependence is nonlinear. The effective pore sizes for the compression and shear waves do not coincide.
Tuberculosis peritoneal, un diagnóstico diferencial para ascitis en cirrosis
Authors: Amado Garzón Sandra Brigitte , Mejía Gómez Carlos Andrés
Published: April 2021

Se presenta el caso de un paciente con antecedente de consumo crónico de alcohol, que consultó por dolor abdominal inespecífico, fiebre intermitente no cuantificada y pérdida de peso, con posterior aumento del perímetro abdominal. Se encontró ascitis y hallazgos en imágenes que sugerían cirrosis. El estudio del líquido ascítico fue no hipertensivo con predominio de linfocitos y niveles de adenosina-desaminasa (ADA) elevados. La ecografía y tomografía de abdomen mostraron el engrosamiento del peritoneo y la biopsia peritoneal por laparoscopia fue compatible con enfermedad granulomatosa, con reacción en cadena de la polimerasa (PCR) positiva para Mycobacterium tuberculosis en un paciente sin otras causas de inmunosupresión. Este caso muestra la necesidad de mantener una alta sospecha clínica de TB en patologías abdominales con clínica inespecífica, aun en pacientes sin inmunocompromiso claro.
Derivation of CaO-SiO2-Al2O3system slag viscosity equation by GP
Authors: Ri S.-C. , Ra J.-H. , Ryom K.-C.
Published: April 2021

Slag viscosity is essential in high-temperature metallurgical processes. However, a slag viscosity model is difficult to exactly interpret as it has a strong nonlinear relation with its composition and temperature. In this paper, genetic programming (GP) was employed to derive a CaO-SiO2-Al2O3 slag viscosity equation. The equation was automatically described as a simple algebraic equation with the basicity and content of Al2O3 and temperature. The average relative error between the values obtained by the equation and the experimental data used for its derivation was as low as 17.1%. Computer simulations were performed to evaluate the accuracy of the derived viscosity equation and were then compared with many experimental viscosities and calculated values of other researchers. Slag compositions and temperatures for simulation calculations were the experimental data which were not used for deriving a viscosity equation. The results showed that the viscosity equation was relatively exact. The viscosities of CaO-SiO2-Al2O3 system slag could be simply and expediently predicted within the wide range of compositions and temperatures by using the derived viscosity equation.
China’s energy cooperation within the 17+1
Authors: Zakic Katarina , Sekaric Nevena
Published: April 2021

The paper analyses Chinese energy cooperation within the 17+1 Cooperation
Framework. In order to present the broader political context of this
collaboration, special attention is given to Chinese energy interests and EU
energy policy. Since the existing databases about Chinese energy projects in
17+1 were incomplete, the authors created a new dedicated database. The
authors address key questions about the principal projects involved such as:
what are the countries and energy subsectors in which China invests the
most; what are the main obstacles in existing energy cooperation; does this
kind of energy cooperation have a positive impact on the development of 17+1
members and is China successful in fulfilling its geo-economic strategy in
17+1 in regards to its overall energy policy. The authors find that China is
primarily interested in building coalfired power plants, but results remain
below expectations, with performance affected by a combination of EU
opposition, project costs, and internal political issues in the 17+1
countries. The nuclear energy subsector is where Chinese enterprises have
experienced some of their greatest failures, while the hydro energy
subsector still has potential for future development. In addition, China is
strongly investing in green energy and slowly but surely achieving its
energy policy goals as part of its broader geo-economic strategy. The
authors conclude that the overall effects of cooperation in the energy field
are promising, but there is still space for further improvement.
Academic Research on the Role of Corporate Governance and IT Expertise in Addressing Cybersecurity Breaches: Implications for Practice, Policy, and Research
Authors: Hartmann Caroline C , Carmenate Jimmy
Published: April 2021

Frequent cyber-attacks on organizations in the last decade have caught the attention of practitioners and governance bodies, who have called for boards to take a more active role in managing and preventing future cyber risks. Governance surveys, however, find that boards are not sufficiently prepared to address cybersecurity risks due to a lack of IT expertise. Firms have begun appointing technology experts, creating board-level technology (IT) committees and delegating responsibilities to the audit committee as a means of managing cybersecurity risk. With the aim of understanding the current and future role of governance mechanisms in managing cybersecurity risks, this paper reviews the existing cybersecurity guidelines and regulations, and summarizes the empirical research related to corporate governance, security breaches, and IT expertise in overseeing cyber risks. Finally, we discuss implications for practice, policy, and researchers.
The Effects of Company Image and Communication Platform Alignment on Investor Information Processing
Authors: Guggenmos Ryan D. , Bennett G. Bradley
Published: April 2021

Motivated by firms' increasing use of new media technology for investor communications, we investigate how alignment between company image and communication platform affects investor judgment and decision making. In our first experiment, we demonstrate that investors expect alignment between firm image and the perception of the new media communication platform managers choose for investor relations. In a second experiment, we examine how this alignment affects investor judgment and decision making. We predict and find that greater platform-image alignment leads investors to experience subjective ease of processing, but does not change investment amounts. Additionally, we demonstrate an approach to conducting an explicit test of a null hypothesis by evaluating the convergence of null hypothesis significance testing (NHST) and Bayesian methods. Our findings have implications for researchers, firms, and investors, and add to a growing literature on new media disclosure.
Genetic Risk Factors for CVD in Type 1 Diabetes: the DCCT/EDIC Study
Authors: Bebu Ionut , Keshavarzi Sareh , Gao Xiaoyu , Braffett Barbara H. , Canty Angelo J. , Herman William H. , Orchard Trevor J. , Dagogo-Jack Samuel , Nathan David M. , Lachin John M. , Paterson Andrew D.
Published: April 2021

Background The
role of genetic factors on the risk of cardiovascular disease (CVD) risk in
type 1 diabetes remains unknown. We therefore examined whether previously
identified genetic factors for coronary artery disease (CAD) are associated
with the risk of CVD above and beyond established demographic and
clinical factors in The Diabetes Control and Complications Trial
(DCCT)/Epidemiology of Diabetes Interventions and Complications (EDIC) study.

Methods Polygenic risk scores (PRS) and
individual genetic variants identified in previous studies were obtained from
genome-wide genotyping performed in 1371 DCCT/EDIC participants. Two composite
CVD outcomes were considered: major adverse cardiovascular events (MACE) (CVD
death or non-fatal myocardial infarction or stroke) and any-CVD (MACE plus
confirmed angina, silent MI, revascularization, or congestive heart failure).
Cox proportional hazards models assessed the association between the genetic
factors and the risk of CVD when adjusted for other factors (including age, lipids,
blood pressure and glycemia).

Results CAD PRS was strongly associated with
the subsequent risk of any-CVD (42% and 38% higher risk per 1 standard
deviation (SD) increase in unadjusted and fully adjusted models, respectively,
p<0.0001), and with the risk of MACE (50% and 40% higher risk per 1SD
increase in unadjusted and fully adjusted models, respectively, p<0.0001).
Several individual SNPs were also nominally associated with the risk of any-CVD
and MACE.

Conclusions Genetic factors are associated with
the risk of subsequent cardiovascular disease in individuals with type 1
diabetes, above and beyond the effect of established risk factors such as age,
lipids, blood pressure and glycemia.
Debonding of Leucite-reinforced Glass-ceramic Veneers Using Er, Cr:YSGG Laser Device: Optimizing Speed with Thermal Safety
Authors: Walinski CJ , Gibson JE , Colvert DS , Redmond DC , Jafarian JH , Gregory PN , Ou KL
Published: April 2021

Clinical Relevance

Removing laminate veneers on anterior teeth by using an Er,Cr:YSGG dental laser can be completed faster than previously reported while maintaining thermal safety.

Objective:

When laminate veneer restorations require removal, the process is tedious, time-consuming, and potentially damaging to the underlying tooth structure. The purpose of this study was to evaluate the removal of Empress CAD milled laminate veneers on extracted human central incisors by using an Er,Cr:YSGG dental laser while optimizing speed and maintaining thermal safety.

Methods and Materials:

A total of 22 extracted human incisors were mounted in acrylic blocks. Conservative veneer preparations were made on all samples with a high-speed dental handpiece with a diamond bur and air/water spray. The 22 blocks of IPS Empress CAD were designed and milled into laminate veneers with a CAD/CAM System and luted to the prepared teeth. An Er,Cr:YSGG dental laser was fitted with a handpiece and laser fiber (600-μm diameter cylindrical fiber, 6 mm in length). Laser parameters were 333 mJ/pulse, 30 Hz, 80% air, 50% water, 600-μm diameter fiber tip, at a fluence of 885.96 J/cm2. The laser fiber tip was held directly on the surface of each veneer in contact, perpendicular to the surface, and moved slowly, covering the labial surface while firing.

Results:

At the laser parameters tested (333 mJ/pulse, 30 Hz, 80% air, 50% water, 600-μm diameter fiber tip), the average duration of exposure to completely remove each laminate veneer was 14.16 ± 0.60 seconds, with a range of 10.75 to 21.25 seconds. The average thickness of each veneer measured at the midfacial was 0.75 +/− 0.03 mm. The mean intrapulpal temperature increase for this period was 0.71°C ± 0.15°C.

Conclusions:

A regression model between time and thickness (p<0.0001) proved to be significant. However, the same cannot be said when the same modeling was tested between temperature and thickness. It can therefore be concluded that as the thickness of a veneer increases, more time is necessary to remove a veneer using Er,Cr:YSGG laser energy; however, increasing thickness does not necessarily result in an increase in pulpal temperature. Within the limitations of this study (single restorative material and single luting agent), it can be concluded that removing CAD Empress laminate veneer restorations using an Er,Cr:YSGG laser is reliable and thermally safe, even at an average of 10 W of power at 30 Hz. Additionally, thermal safety is maximized with adequate aerosolized water spray.
Clinical Evaluation of Lithium Disilicate Veneers Manufactured by CAD/CAM Compared with Heat-pressed Methods: Randomized Controlled Clinical Trial
Authors: Soares-Rusu IBL , Villavicencio-Espinoza CA , de Oliveira NA , Wang L , Honório HM , Rubo JH , Francisconi PAS , Borges AFS
Published: April 2021

Clinical Relevance

Lithium disilicate veneers for esthetic restorations show great accuracy and similarity, regardless of the type of fabrication technique.

Objectives:

This study aimed to evaluate and compare the clinical performance of two different ceramic veneer methods: CAD/CAM (IPS e.max CAD) and heat-press (IPS e.max Press) at 6 and 12 months of follow-up, and the level of patient satisfaction after treatment.

Methods and Materials:

Patients were selected according to eligibility criteria, with a minimum of two and a maximum of six veneers per patient, for a total of 178 veneers randomized in two groups. A split-mouth, longitudinal, interventional, double-blind and single-center study was carried out according to the fabrication technique. Scores were attributed to the veneers according to the criteria of the United States Public Health Service (USPHS) regarding marginal adaptation, color change, marginal discoloration, restoration fracture, tooth fracture, restoration wear, antagonist tooth wear, presence of caries, and postoperative sensitivity. All patients answered a satisfaction questionnaire using the Visual Analogue Scale (VAS). Statistical significance was determined using two-way ANOVA and Tukey test, with a significance level of 5%.

Results:

The marginal adaptation criterion showed statistical difference between periods (p=0.017), regardless of the processing method (baseline means: CAD=1.056, PRESS=1.067, 6- to 12-month follow-up: CAD=1.089, PRESS=1.078). The other evaluated criteria showed no statistical differences between baseline and after 6 to 12 months. The level of satisfaction assessed by the VAS before and after treatment was 7.06 and 9.5, respectively.

Conclusions:

The two methods presented similar clinical performance after 12 months, and the patient’s level of satisfaction was considered high.
The influence of the reaction medium on the cleavage of hydrogen peroxide catalyzed with cobalt ions
Authors:   Department of Physical Chemistry of Combustible Fossils NAS of Ukraine, Naukova Str. 3A, Lviv, 79053 Ukraine, Pokutsa Oleksandr , Zaborovskiy Andriy ,   Department of Physical Chemistry of Combustible Fossils NAS of Ukraine, Naukova Str. 3A, Lviv, 79053 Ukraine, Maksym Daria ,   Department of Physical Chemistry of Combustible Fossils NAS of Ukraine, Naukova Str. 3A, Lviv, 79053 Ukraine, Makitra Roman ,   Department of Physical Chemistry of Combustible Fossils NAS of Ukraine, Naukova Str. 3A, Lviv, 79053 Ukraine, Muzart Jacques ,   Unité Mixte de Recherche “Réactions Sélectives et Applications” CNRS-Université de Reims Champagne-Ardenne BP 1039, 51687 Reims Cedex 2, France, Sobkowiak Andrzej ,   Rzeszow University of Technology, P.O. Box  85, 35-959 Rzeszow, Poland
Published: April 2021

The peculiarity of H2O2 cleavage catalyzed with cobalt(II)acetylacetonate has been studied by the method of inhibitors in different hydrophilic solvents. As established, physical-chemical properties of reaction medium can significantly affect the rate of peroxide decomposition and catalyst oxidation as well.
Synthesis of new conducting materials on the basis of polymer hydrogels
Authors:   Lviv Polytechnic National University,  12 Bandera str., 79013 Lviv, Ukraine, Suberlyak Oleh , Hrytsenko Oleksandr ,   Lviv Polytechnic National University,  12 Bandera str., 79013 Lviv, Ukraine, Hishchak Khrystyna ,   Lviv Polytechnic National University,  12 Bandera str., 79013 Lviv, Ukraine
Published: April 2021

The new conducting polymer hydrogels on the basis of co-polymers of hydroxyethylenemethacrylate and polyvinylpyrrolidone with different nature non-organic fillers have been developed. The dependence of obtained materials electric characteristics on synthesis conditions, quantity and nature of powder filler, moisture content, ambient temperature and magnetic field action have been determined. The possibility of obtaining materials with anisotropic and unidirectional conductivity as well as the wide range of conductivity, which changes with moisture and ambient temperature, has been considered in this work
Biodegradation of oil products in polluted soil by using the mixture of the polymer complex [chotisan–lactoserum protein]–active silt
Authors:   Volzhsky Polytechnic Instititute (branch) of Volgograd State Technical University, 42a Engels str., 404121 Volzhsky, Volgograd Region, Russia, Ioshchenko Yuliya , Kablov Viktor ,   Volzhsky Polytechnic Instititute (branch) of Volgograd State Technical University, 42a Engels str., 404121 Volzhsky, Volgograd Region, Russia, Zaikov Gennady ,   N. M. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygin str., 119991 Moscow, Russia
Published: April 2021

Biodegradation processes of oil products in the polluted soil were studied by using the mixture of the polymer complex [chitosan – lactoserum protein]–active silt. It is shown that all these processes take place due to the synergism of the components which form part of the mixture; the use of the developed biomixture ensures the effective biodegradation of compound oil hydrocarbons, a high degree of cleaning soil from pollutions, except the possible secondary pollution of environment. As a result of biocomposting the cleaned ground containing biogenic substances fits in natural cycle and can be used for realization agricultural work.
New principles in the polymeric sulfur technology
Authors:   Lviv Polytechnic National University, 12 Bandera str., 79013 Lviv, Ukraine, Yavorsky Victor
Published: April 2021

The new method of polymeric sulfur obtaining based on the polymerization of atoms instead of molecules has been proposed. It has been proven that using the new method essentially increases polymerization degree (over 90 %).
Pengaruh Kemampuan Awal dan Motivasi Belajar Terhadap Kemampuan Komunikasi Matematis Siswa
Authors: Fitriani Sara , Nurhanurawati Nurhanurawati , Coesamin M.
Published: April 2021

This study aims to determine the effect of initial ability and learning motivation on students' mathematical communication skills. The population in this study were all students of class XI IPA SMA Fransiskus Bandar Lampung odd semester 2020/2021 academic year. The sample of this research was 32 students of class XI_IPA_2, who were selected using the cluster random sampling technique. Analysis of research data using multiple linear regression test. The results of the hypothesis test show that there is a significant influence between initial ability on mathematical communication skills, there is a significant influence between learning motivation on mathematical communication skills, and there is a significant influence jointly between initial ability and learning motivation on mathematical communication skills. Based on the results of the analysis, it is concluded that the initial ability and learning motivation have a significant effect on students' mathematical communication skills.
Nan's Stories
Authors: Rangiwai Byron
Published: April 2021

This paper explores some of the many stories that my grandmother, Rēpora Marion Brown—Nan, told me when growing up and throughout my adult life. Nan was born at Waiōhau in 1940 and died at her home at Murupara in 2017. Nan was married to Papa— Edward Tapuirikawa Brown. Nan and Papa lived on Kōwhai Avenue in Murupara. Nan’s parents were Koro Ted (Hāpurona Edward (Ted) Maki Nātana) and Nanny Pare (Pare Koekoeā Rikiriki). Koro Ted and Nanny Pare lived around the corner from her on Miro Drive. My sister and I were raised on the same street as my great-grandparents, just six or seven houses away. I could see Koro Ted’s house—located on a slight hill—from my bedroom window.
Development of the Vacuum Arc Chute for a 110 kV Single-Break Vacuum Circuit Breaker
Authors:   Krylov State Scientific Center, St. Petersburg, LAVRINOVICH Valery A. , PERTSEV Alexey A. ,   All-Russian Electrotechnical Institute — Branch of FSUE «RENC-VNIITF named after Academ. E.I. Zababakhin», Ryl’skaya Lidiya A. ,   All-Russian Electrotechnical Institute — Branch of FSUE «RENC-VNIITF named after Academ. E.I. Zababakhin»
Published: April 2021

Requirements for high-voltage vacuum circuit breakers for networks with a grounded neutral, which are stemming from the prospects of using vacuum circuit breakers in networks with the solidly grounded neutral are formulated. The arch chute design for a 110 kV single-break vacuum circuit breaker that takes into account the occurrence of repeated breakdowns is developed. The shielding system equalizes the voltage over the chute casing, decreases the electric field intensity at the “triple point”, protects the casing dielectric from becoming dusted with metallic contact parts erosion products, prevents the occurrence of cascade breakdown between the contact parts and central shield, and eliminates a possible decrease of the chute electric strength as it gradually works out its switching life. It is shown that the chute design includes measures to prevent the possibility of repeated breakdowns during disconnection up to class С1 according to GOST 52565-2006. It has been proven that for vacuum arc chutes for class С2 (for switching a capacitive load) it is necessary to develop a chute with two breaks between the contact parts or to connect two vacuum chutes in series. The shielding system adopted in the chute rules out the possibility of ceramic casing to become metallized, which decreases the chute electric strength as it gradually works out its switching life, and the vacuum arc transfer to beyond the inter-contact gap boundaries onto the central shield, the burnout of which results in that the vacuum arc chute loses its tightness and fully loses its functional properties.
Application of Neural Networks for Automatically Detecting Verbal Accents
Authors:   NRU MPEI, Barte`nev Oleg V.
Published: April 2021

The problem of automatically detecting verbal accents is solved. Word classes with one and two non-transitive accents, with transitive accents, and without accents are identified. An accent is determined in words in which it is not transitive. Words are grouped by the number of syllables. Each group is divided into word classes with the same numbers of accented syllables. Thus, the accents determination problem solved by means of neural networks boils down to word classification. The data array (training and test sets) is formed from A.A. Zaliznyak's Russian language grammatical dictionary, which contains word forms with placed accents. A word model comprises a list of syllables. In the data array, syllables are replaced by their numerical codes, for which syllable dictionaries are compiled. The numerical code of a syllable is its number in the syllable dictionary. The accents are searched in two stages. First, it is found out whether the word has non-transitive accents, and if yes, the word is transferred to the neural network that determines the accents. All neural networks designed in this study contain an Embedding layer which translates scalar representations of word syllables into vector ones. At its input, the neural network receives a vector with the numerical codes of word syllables, and at the output it yields the word class number, which in the case of one non-transitive accent coincides with the number of the accented syllable, and in the case of two non-transitive accents indicates the numbers of two accented syllables. The probabilities of correctly determining one and two non-transitive accents are estimated at 0.9474 and 0.9759, respectively.
Problem Intrinsik DALAM AGENDA PEMBANGUNAN BERKELANJUTAN: Analisis FILSAFAT POLITIK TERHADAP PENGELOLAAN LINGKUNGAN DI INDONESIA PASCA REFORMASI
Authors: Muthmainnah Lailiy , Mustansyir Rizal , Tjahyadi Sindung
Published: April 2021

Penelitian ini bertujuan untuk melakukan analisis kritis atas problem intrinsik gagasan pembangunan berkelanjutan di Indonesia, khususnya terkait dengan politik pengelolaan lingkungan di Indonesia pasca reformasi.  Hal ini didasarkan pada fakta bahwa tingkat kerusakan lingkungan, khususnya sumber daya alam di Indonesia, masih sangat tinggi. Penelitian ini merupakan penelitian pustaka yang menggunakan filsafat politik sebagai metode analisis. Unsur-unsur metodis yang digunakan dalam penelitian ini adalah interpretasi, induksi-deduksi, refleksi, idealisasi, dan heuristika. Berdasarkan analisis yang telah dilakukan dapat disimpulkan bahwa adopsi gagasan pembangunan berkelanjutan di Indonesia masih berada dalam  pusaran paradigma antroposentrisme dan utilitarianisme. Hal ini menyebabkan munculnya berbagai persoalan intrinsik dalam aktualisasi konsep pembangunan berkelanjutan di Indonesia. Persoalan tersebut antara lain berupa karut marutnya aturan perundangan terkait pola pengelolaan lingkungan hidup, politik anggaran yang eksploitatif, lemahnya penegakan hukum, serta dominasi oligarki dalam pengelolaan sumberdaya. Keempat hal tersebut secara kumulatif masih terus terjadi dalam praktik politik pengelolaan lingkungan di Indonesia. Hal ini menunjukkan bahwa pembangunan berkelanjutan akhirnya sekedar menjadi jargon politik. Untuk keluar dari persoalan intrinsik tersebut harus ada re-orientasi pola pembangunan di Indonesia. Orientasi pembangunan tidak boleh hanya mengejar pertumbuhan ekonomi, melainkan harus lebih fokus pada upaya mewujudkan kemanusiaan yang adil dan beradab. Hal ini dikarenakan keterjebakan pada pertumbuhan ekonomi pada kenyataan justru membuat situasi semakin melampaui batas pertumbuhan yang memicu krisis ekologi dalam jangka panjang.
Slavist as a Scout: French School of Oriental Languages and Russian Revolution in 1918
Authors: Galkina Yu. M.
Published: April 2021

Based on the materials of the National Archives of France, the activity of graduates-Slavists of the School of Oriental Languages (Paris) in 1918 in Russia is considered. The article focuses on philologists and dip-lomats: A. Mazon, H. Gauquié, J. Sichel-Dulong, P. Blay. Their activity in Soviet Russia and their view of the events taking place in the country are reconstructed on the basis of letters sent to the director of the School of Oriental Languages — P. Boyer. It is shown that many of the ideas declared by specialists in Russian studies are a reflection of the mentality prevailing in the French political elite: the idea of the imminent fall of the Bolshevik power, confidence in the German trace of the Russian revolution, the desire to view the political transformations of Soviet Russia through the prism of French historical and parliamentary experience. It is noted that H. Gauquié, took the most critical position in understanding the events in Russia, placing the needs of the Russian person at the center of his analytical work. The novelty of the research lies in the consideration of the role of France in the escalation of the Civil War in Russia, which for a long time was in the “blind spot” of research interest. The author of the article reconstructs the contacts of the School’s alumni with the anti-Bolshevik underground. The role and importance of scientists in supporting the intelligence activities of France in Soviet Russia are revealed.
« La didactique » dans la Revue suisse des sciences de l’éducation.
Authors: Aeby Daghé Sandrine , Schneuwly Bernard
Published: April 2021

Partant d’une définition large de la didactique, le présent article délimite une série de cinq dimensions afin d’établir une image globale du champ disciplinaire de la didactique sur la base des publications en didactique disciplinaire dans la Revue suisse des sciences de l’éducation : culture de référence des textes ; focales thématiques dans le domaine du didactique ; mobilisation ou non d’un cadrage spécifiquement didactique ; disciplines scolaires abordées ; méthodes de recherches mises en œuvre. Concrètement, huit éditoriaux et 82 contributions font l’objet d’une analyse quantitative et de contenu. Les résultats montrent des tendances différentes dans les articles provenant des cultures didactiques allemandes et françaises : nombre d’articles parus, rapport aux sciences de l’éducation, référence à une littérature didactique spécialisée, importance accordée aux interventions et à la recherche-action. Les disciplines scolaires principales sont toutes représentées, avec une forte concentration sur la langue première en allemand où manque l’éducation physique et sportive. La Revue se profile ainsi comme un lieu de rencontre, d’interaction et de dialogue entre des didactiques disciplinaires différentes provenant de différentes cultures.
Prevalence and predictors of persistent sinus rhythm after elective electrical cardioversion for atrial fibrillation
Authors: Castrichini Matteo , Restivo Luca , Fabris Enrico , Massa Laura , Di Meola Raffaella , Beltrame Daria , De Luca Antonio , Korcova Renata , Milo Marco , Sinagra Gianfranco
Published: April 2021

Aims

To evaluate the prevalence and predictors of persistent sinus rhythm in a recent cohort of unselected patients undergoing electrical cardioversion for atrial fibrillation.

Methods

We enrolled all consecutive patients undergoing elective electrical cardioversion for atrial fibrillation between January 2017 and December 2018. We analysed baseline clinical and echocardiographic data as well as pharmacological antiarrhythmic therapy. Primary endpoint was the maintenance of sinus rhythm at 12 months after electrical cardioversion.

Results

Of the 300 patients enrolled, 270 (90%) had successful electrical cardioversion and among them, 201 patients have 12-month follow-up data (mean age 70 ± 10 years; 74% men). At 12 months, only 45.7% were in sinus rhythm. Patients without sinus rhythm compared with persistent sinus rhythm at 12 months had a lower baseline left ventricle ejection fraction (LVEF) (49.1 ± 16 vs. 59.7 ± 9%, P = 0.02) and had more frequently a history of atrial fibrillation more than 12 months (55 vs. 34% P = 0.003). At the multivariate analysis, only the duration of the disease beyond 12 months (OR 0.26, 95% CI: 0.08–0.88, P = 0.032), LVEF (OR 1.06, 95% CI: 1.01–1.12, P = 0.012) and the presence of sinus rhythm at 1-month follow-up (OR 18.28, 95% CI: 3.3–100, P = 0.001) were associated with the probability of maintaining sinus rhythm at 12 months.

Conclusion

In unselected patients with atrial fibrillation undergoing elective electrical cardioversion, only 45.7% were in sinus rhythm at 12 months. The presence of sinus rhythm at 1-month follow-up emerged as an independent predictor of maintenance of sinus rhythm. This highlights that early re-evaluation of these patients appears useful for assessing longer term outcomes also from the perspective of a possible selective approach to ablation strategies.
I Am Not the Best of Witnesses: (Anti-)Narrative Voice in Alice Munro’s “Home”
Authors: Palmer Sophie
Published: April 2021

The New York Times recently called Canadian author Alice Munro “one of the greatest short story writers not just of our time but of any time.” Munro, who was born in Huron County in 1931, still lives in the region and has set much of her work in the area, writing with nuanced depth and accuracy that has led the publishing and literary world to affectionately refer to the region as “Alice Munro Country.” Over the course of her career, Munro has typically first published her short stories in magazine venues, such as the New Yorker, and every four or so years, collected these stories into book form. The story “Home,” first published in 1974 is a rare exception; it was originally published in a more obscure source, with Munro stating that it was “sort of a final statement” about her “dissatisfaction with art.” Yet a revised form of this story resurfaced in 2006 when it was published in Munro’s semi-autobiographical book The View from Castle Rock, a collection of stories that in a characteristically postmodern fashion, blurs the boundaries among the genres of memoir, history, and fiction. I will discuss why “Home,” and its peculiar publication history, highlight larger themes within Alice Munro’s work: her portrayals of ambivalence towards family and “home” itself; her self-consciousness with regards to writing fiction that is at the same time about places, people, and history from the “real” world; and how these anxieties have shaped her writing style over time