Solution of the spatial problem of creep for a preparatory working

1985 ◽  
Vol 21 (5) ◽  
pp. 394-400
Author(s):  
Yu. A. Veksler ◽  
N. A. Zhdankin
Author(s):  
Matthew E. Fasano-McCarron ◽  
Jane Holmes Bernstein ◽  
Deborah P. Waber ◽  
Jane W. Newburger ◽  
David R. DeMaso ◽  
...  

Abstract Objective: This study examined longitudinal associations between performance on the Rey–Osterrieth Complex Figure–Developmental Scoring System (ROCF-DSS) at 8 years of age and academic outcomes at 16 years of age in 133 children with dextro-transposition of the great arteries (d-TGA). Method: The ROCF-DSS was administered at the age of 8 and the Wechsler Individual Achievement Test, First and Second Edition (WIAT/WIAT-II) at the ages of 8 and 16, respectively. ROCF-DSS protocols were classified by Organization (Organized/Disorganized) and Style (Part-oriented/Holistic). Two-way univariate (ROCF-DSS Organization × Style) ANCOVAs were computed with 16-year academic outcomes as the dependent variables and socioeconomic status (SES) as the covariate. Results: The Organization × Style interaction was not statistically significant. However, ROCF-DSS Organization at 8 years was significantly associated with Reading, Math, Associative, and Assembled academic skills at 16 years, with better organization predicting better academic performance. Conclusions: Performance on the ROCF-DSS, a complex visual-spatial problem-solving task, in children with d-TGA can forecast academic performance in both reading and mathematics nearly a decade later. These findings may have implications for identifying risk in children with other medical and neurodevelopmental disorders affecting brain development.


2014 ◽  
Vol 59 (3) ◽  
pp. 1155-1158
Author(s):  
S.V. Fortova

Abstract For various problems of continuum mechanics described by the equations of hyperbolic type, the comparative analysis of scenarios of development of turbulent flows in shear layers is carried out. It is shown that the development of the hydrodynamic instabilities leads to a vortex cascade that corresponds to the development stage of the vortices in the energy and the inertial range during the transition to the turbulent flow stage. It is proved that for onset of turbulence the spatial problem definition is basic. At the developed stage of turbulence the spectral analysis of kinetic energy is carried out and the Kolmogorov “-5/3” power law is confirmed.


2020 ◽  
pp. 15-38
Author(s):  
Emma Gee

The Herakles passage in Homer’s Odyssey 11.601–4 has been seen as problematic because it is not one thing: the vision it gives of Herakles’ place in the afterlife is double—his eidōlon (“image”) and the autos (“self”); the underworld and the heavens. This chapter explores the following questions: Should the afterlife be one thing rather than a plurality of things? Should we mark out as “anomalous” what we think doesn’t “fit”? On what criteria should this be done? The spatial problem of Herakles in Od.11 has been interpreted through a series of oppositions: earlier or later, authentic and inauthentic, Homeric and “Orphic,” “negative” and “positive” eschatologies. In fact, though, Herakles can be interpreted as a force for unity. In one brief moment he maps the extremes of the universe with radical economy. It is the job of eschatology to encompass the world.


2020 ◽  
Vol 21 (3) ◽  
pp. 1072
Author(s):  
Daniela Laricchiuta ◽  
Francesca Balsamo ◽  
Carlo Fabrizio ◽  
Anna Panuccio ◽  
Andrea Termine ◽  
...  

To promote efficient explorative behaviors, subjects adaptively select spatial navigational strategies based on landmarks or a cognitive map. The hippocampus works alone or in conjunction with the dorsal striatum, both representing the neuronal underpinnings of the navigational strategies organized on the basis of different systems of spatial coordinate integration. The high expression of cannabinoid type 1 (CB1) receptors in structures related to spatial learning—such as the hippocampus, dorsal striatum and amygdala—renders the endocannabinoid system a critical target to study the balance between landmark- and cognitive map-based navigational strategies. In the present study, mice treated with the CB1-inverse agonist/antagonist AM251 or vehicle were trained on a Circular Hole Board, a task that could be solved through either navigational strategy. At the end of the behavioral testing, c-Fos immunoreactivity was evaluated in specific nuclei of the hippocampus, dorsal striatum and amygdala. AM251 treatment impaired spatial learning and modified the pattern of the performed navigational strategies as well as the c-Fos immunoreactivity in the hippocampus, dorsal striatum and amygdala. The present findings shed light on the involvement of CB1 receptors as part of the selection system of the navigational strategies implemented to efficiently solve the spatial problem.


1995 ◽  
Vol 2 (3) ◽  
pp. 299-311
Author(s):  
S. Kharibegashvili

Abstract The theorem of unique solvability of a spatial problem of Darboux type in Sobolev space is proved for a second-order hyperbolic equation.


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