Multi-level conceptualization of quantityin modern English

The present paper deals with the study of the role of language in forming of the content of the concept QUANTITY, which includes basic and particular characteristics. The authors attempt to describe the language means of quantity conceptualization at different levels in modern English. Analysis of the range of quantitative meanings formed by the language units of quantitative semantics, both lexical and grammatical, in the sentence under the influence of additional linguistic factors of quantity conceptualization is carried ou

Study of the process of interaction between low-frequency ultrasound and biological tissue phantoms

This paper presents the results of a series of experimental studies on the impact of low-frequency ultrasound on biological tissue phantoms, acoustic pressure on the motion of particles in an acoustic field generated by annular waveguide. Experiments have demonstrated that when vibrations with a frequency corresponding to its natural frequency of bending vibrations are induced in the annular waveguide, micropowder particles form arranged bulk structures on the substrate. Analysis of results on the behavior of micropowder particles in the ring insonation area revealed that frequency variations of ultrasonic vibrations lead to variations in spatial distribution of acoustic pressure inside the ring. The thermal effect of low-frequency ultrasound from annular waveguide on biological tissue phantoms has been studied. It was established that the annular waveguide enables heating of fluid when it has no direct contact with the media, thereby demonstrating its applicability for non-contact treatment of tumors

Simulation of vibrational piezoelectric actuators of the micro-robot using the finite element method

This paper describes a micro-robot with the vibrational piezoelectric actuator that was developed and tested using finite element method. Dependency of the robot motion speed on vibration frequency and coefficient of friction of the actuating elements and bearing surface has been investigated. The principle for motion control of the robot has been described and potential domains for its application have been discusse

Role and responsibilities of a teacher in the lifelong learning sector

Teaching is quite challenging and demanding alongside with many other careers. The main role of every teacher is to involve and engage your students in learning activities. An appropriate level of language, appropriate terms understandable to your students will motivate them to learn mor

Genesis of the Russia’s economy innovative development

The innovative development of economy in Russia is possible only if the way of development will be based on the objective basic components, i.e. the corresponding system of premises and factors determining the innovative process. Namely the latter ensure a transformation of the fundamental processes into the application ones, as well as the dynamic development of the economy under the new trends and patterns influenceyesBelgorod State Universit

Myth in the structure of national consciousness

In the context of globalization processes, the problem of nations and national selfconsciousness has become one of the most widely discussed in the modern social sciences and humanities. Within the framework of globalization approaches, a nation is viewed as a transitional formation between traditional locality and planetary interdependence. According to modern theories, the model of a nation is built on the basis of Western European developmental patterns. From such viewpoint, the characterization of ethnicity is rejected, as a feature of “primitive”, “pre-political” societies as marginal groups doomed to assimilation into the existing structures. The central problem of ethnical belonging is the issue of origin, the restoration of cultural and historical memory and the construction of the “appropriate past”, which would assist in solving the problems of the present. The core of any national culture is national-ethnic self-consciousness which is the key factor in the national identity formation. It is pointed out that certain types of myths are inseparable from the ethnic identity. Today, researchers speak of the process of “remythologization”. For Russia, which has always been a multiethnic state, the problem of scientific definition of nations, ethnic groups, national and ethnic consciousness has a special practical significance. In Russia and the post-Soviet space, the activation of mythological thinking has its own specifics.Keywords: Nations, Ethnicity, National consciousness, Myth, Globalizatio

ИССЛЕДОВАНИЕ ДИНАМИЧЕСКОЙ УСТОЙЧИВОСТИ ГИБКИХ ВОЛНОВОДОВ ДЛЯ УЛЬТРАЗВУКОВОЙ ТРОМБОЭКТОМИИ

The paper presents results of mathematical modelling of dynamic stability of flexible ultrasonic waveguides applied in engineering and medicine, particularly, in minimally-invasive surgery. By means of the Bubnov-Galerkin method an equation of parametric flexural vibrations of a waveguide is reduced to the Mathieu equation. Stability of the equation solutions is determined by values of its coefficients and may be represented graphically by means of the Ince-Strutt diagram. Parameters of the Mathieu equation determining the stability of its solution are determined by means of finite element method using ANSYS software and APDL programming language. Представлены результаты математического моделирования динамической устойчивости гибких ультразвуковых волноводов, применяемых в технике и медицине, в частности, в минимально-инвазивной хирургии. Уравнение параметрических изгибных колебаний волновода с помощью метода Бубнова–Галеркина сводится к уравнению Матьё. Устойчивость решений этого уравнения определяется значениями его коэффициентов и может быть графически представлена с помощью диаграммы Айнса–Стретта. Параметры уравнения Матьё, определяющие устойчивость его решения, находятся с помощью метода конечных элементов с использованием программы ANSYS и языка программирования APDL

ПЕРСПЕКТИВЫ ИСПОЛЬЗОВАНИЯ ГИБКИХ УЛЬТРАЗВУКОВЫХ ВОЛНОВОДНЫХ СИСТЕМ В МЕДИЦИНЕ И ТЕХНИКЕ

The article presents comprehensive review of current and possible future applications of flexible ultrasonic waveguides in medicine and engineering. Issues of design, modelling and manufacturing of flexible waveguides are considered. The article also presents some results of the authors in this field, particularly modelling techniques developed for the design of flexible waveguides and ultrasonic technologies and equipment for ultrasonic thromboectomy, heating of frozen fuel and ultrasonic drilling of brittle materials. Novel technology for manufacturing flexible waveguides based on electrolytic-plasma machining is also describedПредставлен всесторонний обзор современных и возможных будущих применений гибких ультразвуковых волноводов в медицине и технике. Рассмотрены проблемы расчета, моделирования и производства гибких волноводов. Также представлены некоторые результаты авторов в этой области, в частности методики моделирования, разработанные для расчета гибких волноводов, и ультразвуковые технологии и оборудование для ультразвуковой тромбоэктомии, разогрева замерзшего топлива и ультразвукового сверления хрупких материалов. Описана оригинальная технология производства гибких волноводов, основанная на электролитно-плазменной обработке