On the hierarchy of partially invariant submodels of differential equations

It is noticed, that partially invariant solution (PIS) of differential equations in many cases can be represented as an invariant reduction of some PIS of the higher rank. This introduce a hierarchic structure in the set of all PISs of a given system of differential equations. By using this structure one can significantly decrease an amount of calculations required in enumeration of all PISs for a given system of partially differential equations. An equivalence of the two-step and the direct ways of construction of PISs is proved. In this framework the complete classification of regular partially invariant solutions of ideal MHD equations is given

Spectrophotometric experiment on the Verera-11 and Venera-12 descent vehicles: Some results of the analysis of the spectrum of the daytime sky of Venus

The spectra of the daytime sky of Venus were recorded on the Venera-11 and Venera-12 descent vehicles at various altitudes above the planet's surface, within the interval of 4500 to 12,000 Angstroms. The angular distribution of the brightness of the scattered radiation was recorded and the ratio of water and carbon dioxide were studied, with respect to the cloud cover boundaries

Spray nozzle designs for agricultural aviation applications

Techniques of generating monodisperse sprays and information concerning chemical liquids used in agricultural aviation are surveyed. The periodic dispersion of liquid jet, the spinning disk method, and ultrasonic atomization are the techniques discussed. Conceptually designed spray nozzles for generating monodisperse sprays are assessed. These are based on the classification of the drops using centrifugal force, on using two opposing liquid laden air jets, and on operating a spinning disk at an overloaded flow. Performance requirements for the designs are described and estimates of the operational characteristics are presented

Трансляция стилежизненного содержания социальной коммуникации: материалы к верификации теории коммуникации Лумана

The article is focused on operationalization of the notion "success of communication" by Luhmann on the basic of empirical research results devoted to the transmission of life styles process through advertisement. The goals of the research were to determine the structure of life styles and complexes in advertisement among young generation of students and generation of their parents and to evaluate the influence of important factors of effectiveness of advertisement as social communication.Предметом статті є операціоналізація поняття комунікативного успіху згідно Луману з врахуванням результа- тів емпіричного дослідження процесу трансляції стилів життя через рекламу. Визначений ступінь відповідності структури стилів життя і стильожиттєвих комплексів, що містяться у рекламі, заявленими студентською молод- дю і поколінням батьків, оцінено вплив важливих факторів ефективності реклами як соціальної комунікації

The reflective environment as a means of formation professional reflection of the future specialist

The article discusses some of the characteristics of reflexive educational environment as a means of formation of professional reflection of the future specialist. Shows the importance of reflection for professional activitiesРассматриваются некоторые характеристики рефлексивной образовательной среды как средства формирования профессиональной рефлексии будущего специалиста. Показано значение рефлексии для профессиональной деятельност

Effect of audiovisual stimulation on the psychophysiological functions in track-and-field athletes

In 18- to 23-year-old athletes specialized in field-and-track athletics, the psychophysiological status (cognitive, psychoemotional, and neurodynamic indicators) and the spectral power of the main EEG rhythms, and the heart rate variability prior to and after the course of audiovisual stimulation (AVS) training (the experimental group) were studied as compared with athletes not receiving AVS (the control group). It has been shown that the AVS training sessions in the experimental group caused improvements to the psychoemotional (the levels of anxiety and neuroticism decreased, while the motivation to achieve success and the hardiness level increased), cognitive, and neurodynamic indicators (the volume of mechanical memory and the speeds of attention switching and simple visual-motor responses increased, while the variation of anticipatory and delayed responses to a moving object became reduced). Increases have also been recorded in the high-frequency EEG α2-subrange rhythm power and the parasympathetic nervous system activity, while the autonomic regulation contour activity was enhanced, and more efficient heart activity at rest was formed after the AVS training course in the experimental group compared to the control. This leads to the conclusion about a positive effect of the AVS training course received by athletes engaged in track-and-field athletics on their psychophysiological parameters and autonomic regulation mechanisms

Analysis of the influence of chronic heart failure type on changes in the microelement composition of myocardial tissue in patients of senile age

Aim: conduct a comparative analysis of the content and distribution of macroelements (Ca2+, K+, Mg2+, and Na+) in myocardial tissue according to autopsy data in elder patients with CHF, depending on the LV E

Pharmacotherapy for the prevention of the progression of chronic heart failure in elderly patients with coronary heart disease

Aim: chronic heart failure (CHF), which occurs as a result of common cardiovascular diseases in the elderly, combined with age-related changes in both structural and functional features of the heart. Myocardial remodeling is an essential substrate that determines the occurrence and progression of CHF in elderly patient