Yu. S. Stepanov’s Method of Ascension and Cognitive-Semiotic Dimensions of Optimal Linguistic Creativity

In the study the method of ascension developed by Ju.S. Stepanov to explore the modifications in logical and philosophical dimensions of language is applied to explore cognitive-semiotic dimensions of optimal linguistic creativity. Following the system of linguistic creativity dimensions offered by O. K. Iriskhanova, which are formal, cognitive and ontologic, we study the balance of Fixed and Extending creativity (the concept introduced by T. Hoffmann) representing optimal creativity in each of them. To conduct the research, we contrast the values of linguistic creativity parameters in terms of cognitive construal mechanisms in children’s prose discourse, thus detecting the specifics in Fixed and Extending creativity in the cognitivesemiotic dimensions of linguistic creativity as well as the specifics in categorial representation of optimal linguistic creativity.

Elasticity, Anelasticity and Yield Strength of Al-Si Alloys Obtained by Directional Crystallization

Acoustic measurements of Young’s modulus and internal friction at frequencies of longitudinal vibrations of about 100 kHz were made in the (5×10-7 to 2×10-4) vibration strain amplitude range for Al-Si alloys. Quasi-static bending stress-strain diagrams were studied as well. The samples of the alloy were prepared using a directional crystallization by Stepanov’s method. The compositions varied from 8 to 25 wt.%Si. The micro-plastic deformation of the materials (acoustic experiments) is explained by dislocation motion in grains of α solid solution. The micro-plastic yield stress has a minimum near the eutectic composition; the flow stress of plastic bending increases smoothly when the Si content increases.