Formation of the ability of junior schoolchildren to work with schemes

Children come across sketches and technical drawings even in preschool age in the process of performing constructive and visual activities; they begin to get acquainted with schemes and drawings only at primary school age. It is therefore no coincidence that one of the tasks of teaching in primary school is the formation of sign and symbolic activity among students, which provides specific ways of transforming educational material and performs the following functions: coding — transmission and reception of information; schematization — the use of symbolic means to display educational material; modeling — highlighting and displaying essential features of an object by operating with symbolic means. The article analyzes the possibilities of forming in junior schoolchildren the ability to work with schemes in the process of teaching construction using the Cuboro constructor. The main studied concepts, stages of training and their content, skills are considered. The possibility of using the Cuboro Draw program in working with younger students is shown. The Cuboro Draw interface and the process of creating schemes in this program are described.

The developing kidney actively negotiates geometric packing conflicts to avoid defects

The physiological functions of several organs rely on branched tubular networks, but little is known about conflicts in development between building enough tubules for adequate function and geometric constraints imposed by organ size. We show that the mouse embryonic kidney epithelium negotiates a physical packing conflict between tubule tip duplication and limited area at the organ surface. Imaging, computational, and soft material modeling of tubule 'families' identifies six geometric packing phases, including two defective ones. Experiments in kidney explants show that a retrograde tension on tubule families is necessary and sufficient for them to avoid defects by switching to a vertical orientation that increases packing density. These results reveal developmental contingencies in response to physical limitations, and create a framework for classifying kidney defects.

propSym: a tool to establish relationships between property constants for material property tensors of any order

The properties of crystalline materials can be described mathematically by tensors whose components are generally known as property constants. Tabulations of these constants in terms of the independent components are well known for common material properties (e.g. elasticity, piezoelectricity etc.) aptly described by tensors of lower rank (e.g. ranks 2–4). General relationships between constants of higher rank are often unknown and sometimes reported incorrectly. A computer program is developed here to calculate the property constant relationships of a property of any order, represented by a tensor of any rank and point group. Tensors up to rank 12, e.g. the tensor of sixth-order elastic constants c 6 ijklmnpqrs , can be calculated on a standard computer, while ranks higher than 12 are best handled on a supercomputer. Output is provided in either full index form or a reduced index form, e.g. the Voigt index notation common to elasticity. As higher-order tensors are often associated with nonlinear material responses, the program provides an accessible means to investigate the important constants involved in nonlinear material modeling. The routine has been used to discover several incorrect relationships reported in the literature.

Linguocognitive modeling of the image of Khanty-Mansi Autonomous Okrug–Yugra (based on the data of federal mass media)

This article is dedicated to the problem of linguocognitive modeling of image of the region in the context of modern globalization processes and territorial identification among other constituent entities of the Russian Federation. The data of federal mass media published over the period from January 1, 2015 to January 31, 2021 served as the material for this research. The relevance of this article is defined by the interest of modern science in the problems of structural organization, substantive characterization, and typological specification of the image of separate territorial entities. The application of linguocognitive approach reveals the implicit properties of the phenomenon “the image of Khanty-Mansi Autonomous Okrug–Yugra”, which is of crucial practical importance for representation of the region in the overall territorial arena of the Russian Federation. The conclusion is made on feasibility of constructing the linguistic image of the region based on its economic attractiveness (46%), cultural-historical attractiveness (17%), and spatial characteristics (11%). Each type of identification includes certain attributes of factual, associative, or symbolic nature. The scientific novelty lies in description of the conceptual model of regional linguistic space of Khanty-Mansi Autonomous Okrug–Yugra, as well as the external image of the region based on the acquired data. The general methodology for determining the conceptual framework of representations on the region can be extrapolated to the practice of other Russian regions and identification of the similar processes of image design. The research perspective is determined by expansion of the material, modeling of the internal linguistic image of Khanty-Mansi Autonomous Okrug–Yugra, and conducting comparative studies.