Spatio-temporal distribution of shallow very-low-frequency earthquakes between December 2020 and January 2021 in Kumano-nada, Nankai subduction zone, detected by a permanent seafloor seismic network

We estimate the hypocenter locations and the centroid moment tensor solutions of the shallow very-low-frequency earthquake (sVLFE) activity that occurred in the Kumano-nada region of the Nankai Trough megathrust zone in central Japan from December 2020 to January 2021. Using seafloor observation data, we examined the detailed spatio-temporal distribution of the sVLFE activity. During this episode, the activity area was within the vicinity in which the sVLFE activity has been observed in the past and can be divided into two major parts. The sVLFE activity started from the eastern side and remained there for the first 5 days and then migrated to the western side via secondary expansion. The eastern active area is located just below the outer ridge and coincides with the location where the paleo-Zenith Ridge subducted. The western activity area is centered between the outer wedge and the outer ridge with the primary active area being at the outer wedge. Comparing the activity in the eastern and western areas, the eastern side is more active, but the individual moment releases on this side are smaller than those on the western side. This may indicate a difference in the fluid pressure along the plate boundary between the eastern and western areas. After the second expansion of the active area, we observed several migration patterns within the expanded area with a faster velocity than those of the initial and second expansions. The direction of these migrations is opposite to that of the first and second expansions. This indicates that the fluid pressure and/or stress level in the sVLFE generation region changed with time within this episode. Furthermore, many waveforms with sVLFE characteristics were observed at only one or a few observation points near the trough axis in the middle to latter half of January 2021. This indicates the occurrence of small-scale sVLFEs in the vicinity of the trough axis at the end of this sVLFE episode. Graphical Abstract

THE GENDER ASPECTS IN PROEIONAL SELF-ACTUATION OF FUTURE RESCUE WORKERS

the essence of such notions as “gender”, “gender symmetry”, “self-actuation”, is disclosed in the article; the gender equality implementation in the military environment, in women’s mastering the extremely hazardous professions and their self-fulfilment in this activity area is described; it is proved that the work on I-concept has facilitated (both males and females) to learn seeing their goals, to plan and attain tangible results in training and profession activities in the course of performing their duties; to understand their selves, their abilities and limitations, to learn manifesting their aptitudes and develop them actively, that is to work on fulfilment of their professional and life plans, therefore actuating themselves in future.

Spatio-Temporal Distribution of Shallow Very-Low-Frequency Earthquakes between December 2020 and January 2021 in Kumano-Nada, Nankai Subduction Zone, Detected by A Permanent Seafloor Seismic Network

We estimate the hypocenter locations and the centroid moment tensor solutions of the shallow very-low-frequency earthquake (sVLFE) activity that occurred in the Kumano-nada region of the Nankai Trough megathrust zone in central Japan from December 2020 to January 2021. Using seafloor observation data, we examined the detailed spatio-temporal distribution of the sVLFE activity. During this episode, the activity area was within the vicinity in which the sVLFE activity has been observed in the past and can be divided into two major parts. The sVLFE activity started from the eastern side and remained there for the first 5 days and then migrated to the western side via secondary expansion. The eastern active area is located just below the outer ridge and coincides with the location where the paleo-Zenith Ridge is subducted. The western activity area is centered between the outer wedge and the outer ridge with the primary active area being at the outer wedge. Comparing the activity in the eastern and western areas, the eastern side is more active, but the individual moment releases on this side are smaller than those on the western side. This may indicate a difference in the fluid pressure along the plate boundary between the eastern and western areas. After the second expansion of the active area, we observed several migration patterns within the expanded area with a faster velocity than those of the initial and second expansions. The direction of these migrations is opposite to that of the first and second expansions. This indicates that the fluid pressure and/or stress level in the sVLFE generation region changed with time within this episode. Furthermore, many waveforms with sVLFE characteristics were observed at only one or a few observation points near the trough axis in the middle to latter half of January 2021. This indicates the occurrence of small-scale sVLFEs in the vicinity of the trough axis at the end of this sVLFE episode.

Setting Individual Goals for Pupils with Profound Intellectual and Multiple Disabilities—Engaging in the Activity Area-Based Curriculum Making

The activity area-based curriculum model (AACM) is used in the Finnish basic education to support pupils—most of whom have profound intellectual and multiple disabilities (PIMD)—who could benefit more from skills that advance independent life coping. Existing studies have concentrated mainly on the Individual Education Plan (IEP) goal-setting process for pupils with milder disabilities than PIMD and have consistently demonstrated significant barriers in the process. This study explores the collaborative IEP goal-setting process for pupils with the AACM. Sixty-five Finnish special education teachers using the AACM participated in the study. Semi-structured interviews were analysed with thematic network analysis. The groups involved in the IEP goal-setting process were divided into main and side mediators. The main mediators were described as significant collaborators with important knowledge of the pupil, while side mediators rarely participated in the process. The special education teachers appeared to be leading the collaboration and were positioned in the middle of the main and side mediators. Further research should focus on the implementation of parents’ collaborative positions. Furthermore, practices and methods should be developed to reinforce the positions of group home staff, special education teacher colleagues and pupils with the AACM or PIMD themselves.

Comprehensive Operation Risk Assessment of a Highway Maintenance Area Based on Reliability

To study the influence of various working conditions on traffic safety in the maintenance area of a mountain expressway, 675 groups of PTV VISSIM traffic simulation experiments were designed with various traffic organization modes, traffic volumes, traffic compositions, activity area lengths, and speed limit values. The results show that the activity area length of a closed lane, a compressed lane, and a borrowed opposite lane had no marked influence on the traffic conflicts. There was a significant positive correlation between the proportion of trucks and the number of traffic conflicts, and the number of traffic conflicts increased significantly with an increase in traffic volume. In the closed lane and borrowed opposite lane scenarios, the increase in traffic conflicts was more obvious with the increase in traffic volume. There were obvious differences in the number of traffic conflicts under different forms of traffic organization. The number of conflicts in the compressed lane scenario was the lowest, and in the borrowed opposite lane scenario the number of conflicts was the highest. There was a significant correlation between a decrease in the speed limit and an increase in the number of traffic conflicts. Finally, with traffic volume, truck proportion, and speed limit values as independent variables and reliability as a dependent variable, linear regression equations of reliability were established for three traffic organization scenarios: closed lane, borrowed opposite lane, and compressed lane.

A directional ellipse to describe directional behavior and player activity area in soccer

This study aimed to compare four standard deviational ellipse models to assess directional behavior and player activity area in four small-sided games (SSG) of soccer played on pitches with the same width (40 m) and different lengths (30, 40, 50, and 60 m). Fourteen participants played four 7-a-side SSGs on each of the four pitch sizes. Based on GPS data, four ellipse models were calculated for each outfield player and pitch size: major ranges (MR) measuring standard deviation in fixed length and width directions, linear regression assuming length (LR LvsW) or width (LR WvsL) as the independent variable, and principal component analysis (PCA) assuming both length and width as independent variables. Slope, area, semi-major and semi-minor axes, and eccentricity were calculated for each ellipse model. The PCA and LR LvsW models showed similar and valid results for each variable, especially for larger pitch sizes. LR WvsL showed unreliable results. The length axis should be considered as the independent axis when assessing the main direction of players’ movements and playing area through a standard deviational ellipse in soccer. This methodology could also be applied to evaluate a team’s labor distribution and spatial distribution of its players.

Association of Space Flight Participants: History and Development Issues (Part 2).

The paper is devoted to the establishment and development of the International Association of Space Explorers with the active involvement of the Soviet and Russian cosmonauts. The Association is a unique and influential space community for cooperation and experience exchange; it unites 430 people who have been in space and represents 38 countries of the world. The paper examines a period of about half a century (1970–2020): a 10-year historical background of the establishment of the Association, about 5 years of its pre-history and about 35 years of its history. It also presents the Association’s activity area, general structure and symbols, systematizes the main events and achievements of this organization as an actor and history object of world and domestic manned astronautics in scientific, technical, political, socio-cultural and sociological aspects, summarizes the main conclusions about development problems.

Element Imbalance among Workers during Solar CellProduction

The solar cell production requires additional methods for workers protection, as well as certain conditions and requirements for the premises to meet them. Solar cell factories are equipped with clean rooms, which meet high environmental and worker protection requirements. Research laboratories often do not meet such protection conditions. Therefore, most often the working conditions in such laboratories are insufficient. In two research laboratories was conducted a study for the elemental composition of hair of workers engaged in the solar cell production and the production methods improvement. As a result of the study it was found an increased content of rare and rare earth metals in some workers’ body and hair. This study allows assess the level of production processes impact on the worker in the studied activity area.