20 research outputs found

    Business gift giving etiquette

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    Try sending gifts at times other than major holidays. These occasions could include a promotion, a new baby, a birthday, a new business referral. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3112

    STUDY OF PSYCHOLOGICAL WELL-BEING AND PSYCHOLOGICAL ASPECTS OF PROFESSIONAL ACTIVITIES OF EDUCATION SPECIALISTS

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    The article presents the study of the psychological well-being of education specialists, their professional motivation, levels of professional satisfaction and burnout. The study involved 140 people (scientific, teaching, administrative and support staff of universities). A number of reliable correlations between the studied parameters have been established. The universal components of professional motivation are singled out. The conclusion is made about the mutual dependence of subjective well-being and professional burnout.Π Π°Π±ΠΎΡ‚Π° посвящСна исслСдованию психологичСского благополучия Ρ€Π°Π±ΠΎΡ‚Π½ΠΈΠΊΠΎΠ² сфСры образования Π² связи с особСнностями ΠΌΠΎΡ‚ΠΈΠ²Π°Ρ†ΠΈΠΈ ΠΏΡ€ΠΎΡ„Π΅ΡΡΠΈΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠΉ Π΄Π΅ΡΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΠΈ, ΡƒΡ€ΠΎΠ²Π½Π΅ΠΌ удовлСтворСнности Ρ‚Ρ€ΡƒΠ΄ΠΎΠΌ ΠΈ ΠΏΡ€ΠΎΡ„Π΅ΡΡΠΈΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ выгорания. Π’ исслСдовании приняли участиС 140 Ρ‡Π΅Π»ΠΎΠ²Π΅ΠΊ (Π½Π°ΡƒΡ‡Π½ΠΎ-пСдагогичСскиС, административныС Ρ€Π°Π±ΠΎΡ‚Π½ΠΈΠΊΠΈ ΠΈ ΡƒΡ‡Π΅Π±Π½ΠΎ-Π²ΡΠΏΠΎΠΌΠΎΠ³Π°Ρ‚Π΅Π»ΡŒΠ½Ρ‹ΠΉ пСрсонал Π²ΡƒΠ·ΠΎΠ²). УстановлСн ряд достовСрных связСй ΠΌΠ΅ΠΆΠ΄Ρƒ ΠΈΠ·ΡƒΡ‡Π°Π΅ΠΌΡ‹ΠΌΠΈ показатСлями. Π’Ρ‹Π΄Π΅Π»Π΅Π½Ρ‹ ΡƒΠ½ΠΈΠ²Π΅Ρ€ΡΠ°Π»ΡŒΠ½Ρ‹Π΅ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚Ρ‹ ΠΏΡ€ΠΎΡ„Π΅ΡΡΠΈΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠΉ ΠΌΠΎΡ‚ΠΈΠ²Π°Ρ†ΠΈΠΈ. Π‘Π΄Π΅Π»Π°Π½ΠΎ Π·Π°ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅ ΠΎ Π²Π·Π°ΠΈΠΌΠ½ΠΎΠΉ обусловлСнности ΡΡƒΠ±ΡŠΠ΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΠ³ΠΎ благополучия ΠΈ ΠΏΡ€ΠΎΡ„Π΅ΡΡΠΈΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ выгорания.ИсслСдованиС Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ Π·Π° счСт Π³Ρ€Π°Π½Ρ‚Π° Российского Π½Π°ΡƒΡ‡Π½ΠΎΠ³ΠΎ Ρ„ΠΎΠ½Π΄Π° β„– 21-78-00116, https://rscf.ru/project/21-78-00116/ Π² Донском государствСнном тСхничСском унивСрситСтС

    Об использовании сил сцСплСния колСс транспортного срСдства, ΠΎΠ±ΠΎΡ€ΡƒΠ΄ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ систСмой рСгулирования Ρ‚ΠΎΡ€ΠΌΠΎΠ·Π½ΠΎΠ³ΠΎ усилия

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    The paper considers a method for calculation and evaluation of an automated brake proportioning system and it also describes assessment of efficiency while using cohesion forces of an automated system during vehicle braking process (MAZ 256200 taken as an example). A method for efficiency estimation of the vehicle braking equipped with an automated brake proportioning system is graphically presented in the paper. A comparable analysis has been made in order to evaluate vehicle braking efficiency in three various conditions of its wheel motion during braking process. The paper contains description of braking processes for a vehicle at its idealized braking, at braking with an operating automated system and at braking with blocked wheels. Mathematical dependences have been proposed and they make it possible to calculate a coefficient of cohesion forces used by an automated brake proportioning system on the basis of time parameters for vehicle braking process. The proposed mathematical dependences take into account design peculiarities of the automated system, i.e. a diagram of modulator arrangement on axes of the vehicle. The executed analysis for calculation accuracy of the coefficient pertaining to use of cohesion forces of the automated system with and without taking into accout rolling force resistance of the vehicle wheels has demonstrated a possibility to apply the proposed calculation methods for carrying out auto-technical expertise while investigating road-traffic accidents involving transport facilities equipped with such systems as ABS. The paper proposes a dependence for identification of a vehicle braking distance on the basis of the coefficient on use of cohesion forces by the automated brake proportioning system. The executed experimental investigations on both test and serial models of the automated brake proportioning system have allowed to justify theoretical discussions concerning application of tyre-road adhesion in the operational process of the vehicle brake proportioning system. The investigation results have shown high efficiency of the test automated brake proportioning system developed by Chair of Automobiles in the name of A. B. Hredescul at Kharkiv National Automobile and Road University under the following braking conditions: dry road surface and compacted snow cover.Π’ ΡΡ‚Π°Ρ‚ΡŒΠ΅ рассмотрСн ΠΌΠ΅Ρ‚ΠΎΠ΄ расчСта ΠΈ ΠΎΡ†Π΅Π½ΠΊΠΈ Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ систСмы рСгулирования Ρ‚ΠΎΡ€ΠΌΠΎΠ·Π½ΠΎΠ³ΠΎ усилия, Π° Ρ‚Π°ΠΊΠΆΠ΅ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½Π° ΠΎΡ†Π΅Π½ΠΊΠ° эффСктивности использования силы сцСплСния Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ систСмой Π² процСссС тормоТСния колСсного транспортного срСдства (Π½Π° ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π΅ автобуса ΠœΠΠ— 256200). ГрафичСски прСдставлСн ΠΈ обоснован способ ΠΎΡ†Π΅Π½ΠΊΠΈ эффСктивности тормоТСния транспортного срСдства, ΠΎΠ±ΠΎΡ€ΡƒΠ΄ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ систСмой рСгулирования Ρ‚ΠΎΡ€ΠΌΠΎΠ·Π½ΠΎΠ³ΠΎ усилия. ΠŸΡ€ΠΎΠ²Π΅Π΄Π΅Π½ ΡΡ€Π°Π²Π½ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹ΠΉ Π°Π½Π°Π»ΠΈΠ· эффСктивности тормоТСния транспортного срСдства Π² Ρ‚Ρ€Π΅Ρ… Ρ€Π°Π·Π½Ρ‹Ρ… условиях двиТСния Π΅Π³ΠΎ колСс ΠΏΡ€ΠΈ Ρ‚ΠΎΡ€ΠΌΠΎΠΆΠ΅Π½ΠΈΠΈ. ΠžΠΏΠΈΡΠ°Π½Ρ‹ процСссы тормоТСния ΠΏΡ€ΠΈ ΠΈΠ΄Π΅Π°Π»ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΌ Ρ‚ΠΎΡ€ΠΌΠΎΠΆΠ΅Π½ΠΈΠΈ, Ρ‚ΠΎΡ€ΠΌΠΎΠΆΠ΅Π½ΠΈΠΈ ΠΏΡ€ΠΈ Ρ€Π°Π±ΠΎΡ‚Π΅ Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ систСмы, Π° Ρ‚Π°ΠΊΠΆΠ΅ ΠΏΡ€ΠΈ Ρ‚ΠΎΡ€ΠΌΠΎΠΆΠ΅Π½ΠΈΠΈ транспортного срСдства с Π·Π°Π±Π»ΠΎΠΊΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹ΠΌΠΈ колСсами. ΠŸΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Ρ‹ матСматичСскиС зависимости, ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡŽΡ‰ΠΈΠ΅ Ρ€Π°ΡΡΡ‡ΠΈΡ‚Π°Ρ‚ΡŒ коэффициСнт использования силы сцСплСния Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ систСмой рСгулирования Ρ‚ΠΎΡ€ΠΌΠΎΠ·Π½ΠΎΠ³ΠΎ усилия Π½Π° основС Π²Ρ€Π΅ΠΌΠ΅Π½Π½Ρ‹Ρ… ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² процСсса тормоТСния транспортного срСдства. ΠŸΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π½Ρ‹Π΅ матСматичСскиС зависимости ΡƒΡ‡ΠΈΡ‚Ρ‹Π²Π°ΡŽΡ‚ особСнности конструкции Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ систСмы, Ρ‚. Π΅. схСму располоТСния модуляторов Π½Π° осях колСсного транспортного срСдства. Π’Ρ‹ΠΏΠΎΠ»Π½Π΅Π½Π½Ρ‹ΠΉ Π°Π½Π°Π»ΠΈΠ· точности расчСтов коэффициСнта использования силы сцСплСния Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ систСмой с ΡƒΡ‡Π΅Ρ‚ΠΎΠΌ ΠΈ Π±Π΅Π· ΡƒΡ‡Π΅Ρ‚Π° сил сопротивлСния качСния колСс транспортного срСдства ΠΏΠΎΠΊΠ°Π·Π°Π» Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ использования ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π½Ρ‹Ρ… ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠ² расчСта Π² ΠΏΡ€Π°ΠΊΡ‚ΠΈΠΊΠ΅ автотСхничСских экспСртиз ΠΏΡ€ΠΈ расслСдовании Π΄ΠΎΡ€ΠΎΠΆΠ½ΠΎ-транспортных ΠΏΡ€ΠΎΠΈΡΡˆΠ΅ΡΡ‚Π²ΠΈΠΉ с участиСм транспортных срСдств, ΠΎΠ±ΠΎΡ€ΡƒΠ΄ΠΎΠ²Π°Π½Π½Ρ‹Ρ… Ρ‚Π°ΠΊΠΈΠΌΠΈ систСмами, ΠΊΠ°ΠΊ ABS. ΠŸΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π° Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡ‚ΡŒ опрСдСлСния Ρ‚ΠΎΡ€ΠΌΠΎΠ·Π½ΠΎΠ³ΠΎ ΠΏΡƒΡ‚ΠΈ колСсного транспортного срСдства Π½Π° основС коэффициСнта использования силы сцСплСния Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ систСмой рСгулирования Ρ‚ΠΎΡ€ΠΌΠΎΠ·Π½ΠΎΠ³ΠΎ усилия. Π’Ρ‹ΠΏΠΎΠ»Π½Π΅Π½Π½Ρ‹Π΅ ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½Ρ‹Π΅ исслСдования ΠΎΠΏΡ‹Ρ‚Π½ΠΎΠ³ΠΎ ΠΈ сСрийного ΠΎΠ±Ρ€Π°Π·Ρ†ΠΎΠ² Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ систСмы ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΈ ΠΏΠΎΠ΄Ρ‚Π²Π΅Ρ€Π΄ΠΈΡ‚ΡŒ тСорСтичСскиС рассуТдСния Π² ΠΎΡ‚Π½ΠΎΡˆΠ΅Π½ΠΈΠΈ использования сил сцСплСния Π² процСссС Ρ€Π°Π±ΠΎΡ‚Ρ‹ Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ систСмы рСгулирования Ρ‚ΠΎΡ€ΠΌΠΎΠ·Π½ΠΎΠ³ΠΎ усилия колСсного транспортного срСдства. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ исслСдований ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ Π²Ρ‹ΡΠΎΠΊΡƒΡŽ ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ Ρ€Π°Π±ΠΎΡ‚Ρ‹ ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½ΠΎΠΉ Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ систСмы, Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Π½ΠΎΠΉ Π½Π° ΠΊΠ°Ρ„Π΅Π΄Ρ€Π΅ Π°Π²Ρ‚ΠΎΠΌΠΎΠ±ΠΈΠ»Π΅ΠΉ ΠΈΠΌΠ΅Π½ΠΈ А. Π‘. ГрСдСскула Π₯Π°Ρ€ΡŒΠΊΠΎΠ²ΡΠΊΠΎΠ³ΠΎ Π½Π°Ρ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ Π°Π²Ρ‚ΠΎΠΌΠΎΠ±ΠΈΠ»ΡŒΠ½ΠΎΠ΄ΠΎΡ€ΠΎΠΆΠ½ΠΎΠ³ΠΎ унивСрситСта, Π² условиях тормоТСния транспортного срСдства Π½Π° сухом Π°ΡΡ„Π°Π»ΡŒΡ‚ΠΎΠ²ΠΎΠΌ ΠΈ ΡƒΠΊΠ°Ρ‚Π°Π½Π½ΠΎΠΌ снСТном покрытиях

    О Ρ‚ΠΎΡ€ΠΌΠΎΠΆΠ΅Π½ΠΈΠΈ колСсного транспортного срСдства, ΠΎΠ±ΠΎΡ€ΡƒΠ΄ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ систСмой рСгулирования Ρ‚ΠΎΡ€ΠΌΠΎΠ·Π½ΠΎΠ³ΠΎ усилия

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    The paper proposes a method for determining a vehicle stopping distance based on a braking rate and a coefficient of using an adhesion force by an automated control system for regulating a braking force on the example of a multi-axle vehicle. The aim of the study is to calculate parameters of the braking efficiency of a multi-axle wheeled vehicle equipped with an automated braking force control system based on the adhesion between a tire and a supporting surface. A peculiarity of the considered method is the use of the calculated braking coefficient of the vehicle and the coefficient of use of adhesion forces during the operation of automated system for regulating the braking force. The presence of new mathematical relationships between the position of the coordinate of the vehicle’s gravity center, realized by the clutches of its wheels, and the braking coefficient of the vehicle makes it possible to simulate the change in the deceleration of a wheeled vehicle in various braking modes of its motion. The terms describing the interaction of an elastic tire with a supporting surface in the braking mode of a wheeled vehicle have been substantiated. Equations are written that permit to calculate: a position of the coordinate of gravity center of a multi-axle wheeled vehicle relative to its front and rear axles; a braking coefficient value of a multi-axle wheeled vehicle based on the coordinates of the position of its gravity center, clutches that are realized between its tires and a supporting surface; load distribution between the respective front and rear axles of the vehicle. To calculate the stopping distance of a wheeled vehicle, it is proposed to take a coefficient value of use of the adhesion force equal to 0.83, regardless of the change in weather and climatic conditions in which the vehicle is operated (a calculation error under an accepted assumption is not more than 5 %). In a graphical form, a design diagram of the coordinate position of a gravity center of a multi-axle wheeled vehicle is presented, which gives a general idea about the redistribution of masses between front and rear axles of the vehicle. Scientific publications on the change in the value of the realized adhesion between the tire and the supporting surface in the braking mode of the automobile wheel under various factors have been analyzed in the paper. The proposed concept for determining parameters of the braking efficiency of a multi-axle wheeled vehicle clarifies some provisions in the theory of vehicle motion, in particular, it allows to apply the calculated method for determining the deceleration of a vehicle in the problem of increasing vertical loads on the axles of a multi-axle wheeled vehicle in the braking mode. The given method for calculating coefficients of weight distribution between adjacent front or rear axles of a multi-axle wheeled vehicle increases an accuracy of determining the amount of deceleration of the vehicle by the calculation method.ΠŸΡ€Π΅Π΄Π»Π°Π³Π°Π΅Ρ‚ΡΡ способ опрСдСлСния остановочного ΠΏΡƒΡ‚ΠΈ транспортного срСдства Π½Π° основС коэффициСнта тормоТСния ΠΈ коэффициСнта использования силы сцСплСния Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ систСмой рСгулирования Ρ‚ΠΎΡ€ΠΌΠΎΠ·Π½ΠΎΠ³ΠΎ усилия Π½Π° ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π΅ многоосного автомобиля. ИсслСдованиС Π·Π°ΠΊΠ»ΡŽΡ‡Π°Π»ΠΎΡΡŒ Π² Ρ‚ΠΎΠΌ, Ρ‡Ρ‚ΠΎΠ±Ρ‹ Π½Π° основС Ρ€Π΅Π°Π»ΠΈΠ·ΡƒΠ΅ΠΌΠΎΠ³ΠΎ сцСплСния ΠΌΠ΅ΠΆΠ΄Ρƒ шиной ΠΈ ΠΎΠΏΠΎΡ€Π½ΠΎΠΉ ΠΏΠΎΠ²Π΅Ρ€Ρ…Π½ΠΎΡΡ‚ΡŒΡŽ расчСтным ΠΏΡƒΡ‚Π΅ΠΌ ΠΎΠΏΡ€Π΅Π΄Π΅Π»ΠΈΡ‚ΡŒ ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Ρ‹ эффСктивности тормоТСния многоосного колСсного транспортного срСдства, ΠΎΠ±ΠΎΡ€ΡƒΠ΄ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠΉ систСмой рСгулирования Ρ‚ΠΎΡ€ΠΌΠΎΠ·Π½ΠΎΠ³ΠΎ усилия. НаличиС Π½ΠΎΠ²Ρ‹Ρ… матСматичСских взаимосвязСй ΠΌΠ΅ΠΆΠ΄Ρƒ ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ΠΈΠ΅ΠΌ ΠΊΠΎΠΎΡ€Π΄ΠΈΠ½Π°Ρ‚Ρ‹ Ρ†Π΅Π½Ρ‚Ρ€Π° тяТСсти транспортного срСдства, Ρ€Π΅Π°Π»ΠΈΠ·ΡƒΠ΅ΠΌΡ‹ΠΌ сцСплСниями Π΅Π³ΠΎ колСс, ΠΈ коэффициСнтом тормоТСния автомобиля позволяСт ΠΌΠΎΠ΄Π΅Π»ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ замСдлСния колСсной ΠΌΠ°ΡˆΠΈΠ½Ρ‹ Π² Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… Ρ‚ΠΎΡ€ΠΌΠΎΠ·Π½Ρ‹Ρ… Ρ€Π΅ΠΆΠΈΠΌΠ°Ρ… Π΅Π΅ двиТСния. ΠžΠ±ΠΎΡΠ½ΠΎΠ²Π°Π½Ρ‹ Ρ‚Π΅Ρ€ΠΌΠΈΠ½Ρ‹, ΠΎΠΏΠΈΡΡ‹Π²Π°ΡŽΡ‰ΠΈΠ΅ взаимодСйствиС эластичной ΡˆΠΈΠ½Ρ‹ с ΠΎΠΏΠΎΡ€Π½ΠΎΠΉ ΠΏΠΎΠ²Π΅Ρ€Ρ…Π½ΠΎΡΡ‚ΡŒΡŽ Π² Ρ€Π΅ΠΆΠΈΠΌΠ΅ тормоТСния колСсной ΠΌΠ°ΡˆΠΈΠ½Ρ‹. Записаны уравнСния, ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡŽΡ‰ΠΈΠ΅ Ρ€Π°ΡΡΡ‡ΠΈΡ‚Π°Ρ‚ΡŒ: ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ΠΈΠ΅ ΠΊΠΎΠΎΡ€Π΄ΠΈΠ½Π°Ρ‚Ρ‹ Ρ†Π΅Π½Ρ‚Ρ€Π° тяТСсти многоосного колСсного транспортного срСдства ΠΎΡ‚Π½ΠΎΡΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ Π΅Π³ΠΎ ΠΏΠ΅Ρ€Π΅Π΄Π½ΠΈΡ… ΠΈ Π·Π°Π΄Π½ΠΈΡ… мостов; Π·Π½Π°Ρ‡Π΅Π½ΠΈΠ΅ коэффициСнта тормоТСния многоосной колСсной ΠΌΠ°ΡˆΠΈΠ½Ρ‹ Π½Π° основС ΠΊΠΎΠΎΡ€Π΄ΠΈΠ½Π°Ρ‚ полоТСния Ρ†Π΅Π½Ρ‚Ρ€Π° Π΅Π΅ тяТСсти, сцСплСний, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ Ρ€Π΅Π°Π»ΠΈΠ·ΡƒΡŽΡ‚ΡΡ ΠΌΠ΅ΠΆΠ΄Ρƒ Π΅Π΅ шинами ΠΈ ΠΎΠΏΠΎΡ€Π½ΠΎΠΉ ΠΏΠΎΠ²Π΅Ρ€Ρ…Π½ΠΎΡΡ‚ΡŒΡŽ; распрСдСлСниС Π½Π°Π³Ρ€ΡƒΠ·ΠΊΠΈ ΠΌΠ΅ΠΆΠ΄Ρƒ ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΠΌΠΈ ΠΏΠ΅Ρ€Π΅Π΄Π½ΠΈΠΌΠΈ ΠΈ Π·Π°Π΄Π½ΠΈΠΌΠΈ мостами транспортного срСдства. Для расчСта остановочного ΠΏΡƒΡ‚ΠΈ колСсного транспортного срСдства прСдлагаСтся Π·Π½Π°Ρ‡Π΅Π½ΠΈΠ΅ коэффициСнта использования силы сцСплСния ΠΏΡ€ΠΈΠ½ΠΈΠΌΠ°Ρ‚ΡŒ Ρ€Π°Π²Π½Ρ‹ΠΌ 0,83 нСзависимо ΠΎΡ‚ измСнСния ΠΏΠΎΠ³ΠΎΠ΄Π½ΠΎ-климатичСских условий, Π² ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… эксплуатируСтся Π°Π²Ρ‚ΠΎΠΌΠΎΠ±ΠΈΠ»ΡŒ (ΠΏΠΎΠ³Ρ€Π΅ΡˆΠ½ΠΎΡΡ‚ΡŒ расчСтов ΠΏΡ€ΠΈ принятом Π΄ΠΎΠΏΡƒΡ‰Π΅Π½ΠΈΠΈ Π½Π΅ Π±ΠΎΠ»Π΅Π΅ 5Β %). Π’ графичСском Π²ΠΈΠ΄Π΅ прСдставлСна расчСтная схСма полоТСния ΠΊΠΎΠΎΡ€Π΄ΠΈΠ½Π°Ρ‚ Ρ†Π΅Π½Ρ‚Ρ€Π° тяТСсти многоосной колСсной ΠΌΠ°ΡˆΠΈΠ½Ρ‹, Π΄Π°ΡŽΡ‰Π°Ρ ΠΎΠ±Ρ‰Π΅Π΅ прСдставлСниС ΠΎ пСрСраспрСдСлСнии масс ΠΌΠ΅ΠΆΠ΄Ρƒ ΠΏΠ΅Ρ€Π΅Π΄Π½ΠΈΠΌΠΈ ΠΈ Π·Π°Π΄Π½ΠΈΠΌΠΈ мостами автомобиля. ΠŸΡ€ΠΎΠ°Π½Π°Π»ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Ρ‹ Π½Π°ΡƒΡ‡Π½Ρ‹Π΅ ΠΏΡƒΠ±Π»ΠΈΠΊΠ°Ρ†ΠΈΠΈ ΠΏΠΎ измСнСнию Π²Π΅Π»ΠΈΡ‡ΠΈΠ½Ρ‹ Ρ€Π΅Π°Π»ΠΈΠ·ΡƒΠ΅ΠΌΠΎΠ³ΠΎ сцСплСния ΠΌΠ΅ΠΆΠ΄Ρƒ шиной ΠΈ ΠΎΠΏΠΎΡ€Π½ΠΎΠΉ ΠΏΠΎΠ²Π΅Ρ€Ρ…Π½ΠΎΡΡ‚ΡŒΡŽ Π² Ρ€Π΅ΠΆΠΈΠΌΠ΅ тормоТСния Π°Π²Ρ‚ΠΎΠΌΠΎΠ±ΠΈΠ»ΡŒΠ½ΠΎΠ³ΠΎ колСса ΠΏΡ€ΠΈ Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… Ρ„Π°ΠΊΡ‚ΠΎΡ€Π°Ρ…. ΠŸΡ€Π΅Π΄Π»Π°Π³Π°Π΅ΠΌΠ°Ρ концСпция опрСдСлСния ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² эффСктивности тормоТСния многоосной колСсной ΠΌΠ°ΡˆΠΈΠ½Ρ‹ уточняСт Π½Π΅ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ полоТСния Ρ‚Π΅ΠΎΡ€ΠΈΠΈ двиТСния автомобиля, Π² частности позволяСт ΠΏΡ€ΠΈΠΌΠ΅Π½ΠΈΡ‚ΡŒ расчСтный ΠΌΠ΅Ρ‚ΠΎΠ΄ опрСдСлСния замСдлСния автомобиля Π² Π·Π°Π΄Π°Ρ‡Π΅ приращСния Π²Π΅Ρ€Ρ‚ΠΈΠΊΠ°Π»ΡŒΠ½Ρ‹Ρ… Π½Π°Π³Ρ€ΡƒΠ·ΠΎΠΊ Π½Π° осях многоосного колСсного транспортного срСдства Π² Ρ€Π΅ΠΆΠΈΠΌΠ΅ тормоТСния. ΠŸΡ€ΠΈΠ²Π΅Π΄Π΅Π½Π½Ρ‹ΠΉ способ расчСта коэффициСнтов распрСдСлСния вСса ΠΌΠ΅ΠΆΠ΄Ρƒ смСТными ΠΏΠ΅Ρ€Π΅Π΄Π½ΠΈΠΌΠΈ ΠΈΠ»ΠΈ Π·Π°Π΄Π½ΠΈΠΌΠΈ мостами многоосной колСсной ΠΌΠ°ΡˆΠΈΠ½Ρ‹ ΠΏΠΎΠ²Ρ‹ΡˆΠ°Π΅Ρ‚ Ρ‚ΠΎΡ‡Π½ΠΎΡΡ‚ΡŒ опрСдСлСния Π²Π΅Π»ΠΈΡ‡ΠΈΠ½Ρ‹ замСдлСния автомобиля расчСтным ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ

    Using private desktop grid system for accelerating drug discovery

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    Drug design is a challenging and computationally intensive task. Chemists are often faced with handling huge amounts of data as well as with working with huge amounts of computational resources. This paper shows that using the BOINC system as a private, dedicated desktopgrid a community, like the EU CancerGrid chemist community, can easily set up its own high-end infrastructure based on available and inexpensive desktop computers. The CancerGrid Computing System described in the paper can easily be adapted for the needs of other user communities having similar infrastructure requirements

    CALCULATION METHODS OF REALIZED COEFFICIENT OF COHESION AT WHEEL ROLLING IN BRAKING MODE

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    The known methods of the realized rate of tyre coefficient of cohesion with the supporting surface at wheel rolling in the brake mode are analysed. The comparison of the obtained Ο† – S planes with the experimental one for the purpose of determining the most suitable method of practical calculation cohesion is carried out. It is established that the maximum (Ο†max) calculation coefficient of cohesion essentially depends on the vertical load applied to the wheel, and a variant allowing to calculate this phenomenon at Ο† – S planes calculation is offered

    Π§ΠΎΠ»ΠΎΠ²Ρ–Ρ‡Π΅ бСзпліддя: Π°ΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½Ρ– питання Ρ„Ρ–Π·Ρ–ΠΎΠ»ΠΎΠ³Ρ–Ρ—, Π΅Ρ‚Ρ–ΠΎΠΏΠ°Ρ‚ΠΎΠ³Π΅Π½Π΅Π·Ρƒ Ρ‚Π° діагностики ΠΏΠΎΡ€ΡƒΡˆΠ΅Π½ΡŒ Ρ€Π΅ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΈΠ²Π½ΠΎΡ— систСми Ρƒ Ρ‡ΠΎΠ»ΠΎΠ²Ρ–ΠΊΡ–Π²

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    IntroductionInfertility in men is the important problem, and not only medical, this is the most serious social problems in developed countries. It concerns both the individual and the family, and society in general. Actuality of this problem increases with age. Over the last 20 years the number infertile men rose from 30% to 50%. Male infertility gets 25-50% of all causes of infertility, the share of is. The situation is caused by multi-dimensionality of factors inherent in the present. The most significant are: socio-economic, environmental, lifestyle, marriage and family relations. And although the level of development of modern medicine is very high, often the cause of infertility in men can not be determined.Research objectiveTo analyze the main issues of pathogenesis and diagnosis of male infertility.Materials and methodsThe next methods were used: the semantic evaluation of scientific documents, comparison, system and structural-logical analysis.Spermatogenesis is a complex process. It is estimated that out of testicular tank sperm contains about 440 million of cells. Male infertility can becaused by the inability of the sperm penetration in mature female egg. Secretory infertility is usually caused by two main reasons. The first- testicles pathology due to congenital or acquired factors. A special place in the development of secretory infertility has endocrine pathology of the hypothalamic-pituitary-gonadal system (congenital and acquired hypogonadism, testosterone-deficient state) and diabetes mellitus. Diagnosis of infertility in men is based on medical history, clinical, laboratory and special methods of examination.ConclusionsInfertility in men is important problem, and not only medical, this is the most serious social problems in developed countries, which relate both to the individual and the family, and society in general.Spermatogenesis is a complex process, in which primitive germ cells, or spermatogonia, share, reproducing like stem cells, or gives rise to daughter cells, further differentiate into the spermatocyte. A further division of spermatocyte gives rise to cell lines eventually differentiates into Spermatid and later in the sperm.Diagnosis of male infertility can be suspected in the case of absence of the child's conception in the pair during 12 months of regular sexual life without use of all types of contraception.Clinical examination of patients includes: history, physical examination, ejaculate study, determination of the level of hormones in blood serum, ultrasound of the scrotum, prostate gland, seminal vesicles. БСсплодиС Ρƒ ΠΌΡƒΠΆΡ‡ΠΈΠ½ – Π½Π΅ Ρ‚ΠΎΠ»ΡŒΠΊΠΎ ваТная мСдицинская, Π½ΠΎ ΠΈ ΡΠ΅Ρ€ΡŒΠ΅Π·Π½Π°Ρ ΡΠΎΡ†ΠΈΠ°Π»ΡŒΠ½Π°Ρ ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΠ° Π² Ρ€Π°Π·Π²ΠΈΡ‚Ρ‹Ρ… странах. НСсмотря Π½Π° достаточно высокий ΡƒΡ€ΠΎΠ²Π΅Π½ΡŒ развития соврСмСнной ΠΌΠ΅Π΄ΠΈΡ†ΠΈΠ½Ρ‹, Π½Π΅Ρ€Π΅Π΄ΠΊΠΎ Π½Π΅ удаСтся ΡƒΡΡ‚Π°Π½ΠΎΠ²ΠΈΡ‚ΡŒ ΠΏΡ€ΠΈΡ‡ΠΈΠ½Ρƒ ΠΈΠ½Ρ„Π΅Ρ€Ρ‚ΠΈΠ»ΡŒΠ½ΠΎΡΡ‚ΠΈ Ρƒ ΠΌΡƒΠΆΡ‡ΠΈΠ½. Π‘ Ρ†Π΅Π»ΡŒΡŽ Π°Π½Π°Π»ΠΈΠ·Π° основных вопросов этиопатогСнСза ΠΈ диагностики муТского бСсплодия ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½ ΠΎΠ±Π·ΠΎΡ€ спСциализированной Π»ΠΈΡ‚Π΅Ρ€Π°Ρ‚ΡƒΡ€Ρ‹. ΠžΡ‚ΠΌΠ΅Ρ‡Π΅Π½ΠΎ, Ρ‡Ρ‚ΠΎ всС Ρ„ΠΎΡ€ΠΌΡ‹ муТского бСсплодия сводятся ΠΊ Π΄Π²ΡƒΠΌ Π³Ρ€ΡƒΠΏΠΏΠ°ΠΌ: сСкрСторноС, ΠΏΡ€ΠΈ ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠΌ отсутствуСт ΠΈΠ»ΠΈ Π½Π°Ρ€ΡƒΡˆΠ΅Π½Π° функция ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ†ΠΈΠΈ спСрматозоидов, ΠΈ экскрСторноС, ΠΏΡ€ΠΈ ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠΌ Π½Π°Ρ€ΡƒΡˆΠ΅Π½ транспорт спСрмиСв ΠΏΠΎ сСмявыносящим путям; ΠΏΡ€ΠΈ этом часто ΠΎΡ‚ΠΌΠ΅Ρ‡Π°ΡŽΡ‚ ΡΠΎΡ‡Π΅Ρ‚Π°Π½Π½ΡƒΡŽ ΠΏΠ°Ρ‚ΠΎΠ»ΠΎΠ³ΠΈΡŽ. Диагностика муТского бСсплодия основана Π½Π° комплСксной ΠΎΡ†Π΅Π½ΠΊΠ΅ состояния муТской Ρ€Π΅ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΈΠ²Π½ΠΎΠΉ систСмы, проводится Π² ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½Π½ΠΎΠΉ ΠΏΠΎΡΠ»Π΅Π΄ΠΎΠ²Π°Ρ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΠΈ с ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ анамнСстичСского, клиничСского, Π»Π°Π±ΠΎΡ€Π°Ρ‚ΠΎΡ€Π½Ρ‹Ρ… ΠΈ ΡΠΏΠ΅Ρ†ΠΈΠ°Π»ΡŒΠ½Ρ‹Ρ… ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠ² обслСдования. БСгодня  сущСствуСт Ρ€Π°Π·Π½ΠΎΠΎΠ±Ρ€Π°Π·ΠΈΠ΅ диагностичСских ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠ² обслСдования, хотя Π² Ρ†Π΅Π»ΠΎΠΌ вопросы диагностики Π½ΡƒΠΆΠ΄Π°ΡŽΡ‚ΡΡ Π² Π±ΠΎΠ»Π΅Π΅ Π³Π»ΡƒΠ±ΠΎΠΊΠΎΠΉ ΠΈ всСстороннСй Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ΅.БСзпліддя Ρƒ Ρ‡ΠΎΠ»ΠΎΠ²Ρ–ΠΊΡ–Π² – Π½Π΅ Ρ‚Ρ–Π»ΡŒΠΊΠΈ Π²Π°ΠΆΠ»ΠΈΠ²Π° ΠΌΠ΅Π΄ΠΈΡ‡Π½Π°, Π°Π»Π΅ ΠΉ складна ΡΠΎΡ†Ρ–Π°Π»ΡŒΠ½Π° ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΠ° Π² Ρ€ΠΎΠ·Π²ΠΈΠ½ΡƒΡ‚ΠΈΡ… ΠΊΡ€Π°Ρ—Π½Π°Ρ…. ΠΠ΅Π·Π²Π°ΠΆΠ°ΡŽΡ‡ΠΈ Π½Π° Π΄ΠΎΠ²ΠΎΠ»Ρ– високий Ρ€Ρ–Π²Π΅Π½ΡŒ Ρ€ΠΎΠ·Π²ΠΈΡ‚ΠΊΡƒ сучасної ΠΌΠ΅Π΄ΠΈΡ†ΠΈΠ½ΠΈ, часто Π½Π΅ Π²Π΄Π°Ρ”Ρ‚ΡŒΡΡ виявити ΠΏΡ€ΠΈΡ‡ΠΈΠ½Ρƒ Ρ–Π½Ρ„Π΅Ρ€Ρ‚ΠΈΠ»ΡŒΠ½ΠΎΡΡ‚Ρ– Ρƒ Ρ‡ΠΎΠ»ΠΎΠ²Ρ–ΠΊΡ–Π². Π— ΠΌΠ΅Ρ‚ΠΎΡŽ Π°Π½Π°Π»Ρ–Π·Ρƒ основних ΠΏΠΈΡ‚Π°Π½ΡŒ Π΅Ρ‚Ρ–ΠΎΠΏΠ°Ρ‚ΠΎΠ³Π΅Π½Π΅Π·Ρƒ Ρ– діагностики Ρ‡ΠΎΠ»ΠΎΠ²Ρ–Ρ‡ΠΎΠ³ΠΎ бСзпліддя здійснили огляд Ρ„Π°Ρ…ΠΎΠ²ΠΎΡ— Π»Ρ–Ρ‚Π΅Ρ€Π°Ρ‚ΡƒΡ€ΠΈ. Виявили, Ρ‰ΠΎ всі Ρ„ΠΎΡ€ΠΌΠΈ Ρ‡ΠΎΠ»ΠΎΠ²Ρ–Ρ‡ΠΎΠ³ΠΎ бСзпліддя Π½Π°Π»Π΅ΠΆΠ°Ρ‚ΡŒ Π΄ΠΎ Π΄Π²ΠΎΡ… Π³Ρ€ΡƒΠΏ: сСкрСторнС, ΠΏΡ€ΠΈ якому відсутня Ρ‡ΠΈ ΠΏΠΎΡ€ΡƒΡˆΠ΅Π½Π° функція ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ†Ρ–Ρ— спСрматозоїдів, ΠΉ СкскрСторнС, ΠΊΠΎΠ»ΠΈ ΠΏΠΎΡ€ΡƒΡˆΠ΅Π½ΠΈΠΉ транспорт спСрміїв сім’явивідними ΡˆΠ»ΡΡ…Π°ΠΌΠΈ; ΠΏΡ€ΠΈ Ρ†ΡŒΠΎΠΌΡƒ часто Π²ΠΈΠ·Π½Π°Ρ‡Π°ΡŽΡ‚ΡŒ ΠΏΠΎΡ”Π΄Π½Π°Π½Ρƒ ΠΏΠ°Ρ‚ΠΎΠ»ΠΎΠ³Ρ–ΡŽ. Діагностика Ρ‡ΠΎΠ»ΠΎΠ²Ρ–Ρ‡ΠΎΠ³ΠΎ бСзпліддя заснована Π½Π° комплСксному ΠΎΡ†Ρ–Π½ΡŽΠ²Π°Π½Π½Ρ– стану Ρ‡ΠΎΠ»ΠΎΠ²Ρ–Ρ‡ΠΎΡ— Ρ€Π΅ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΈΠ²Π½ΠΎΡ— систСми, Π·Π΄Ρ–ΠΉΡΠ½ΡŽΡ”Ρ‚ΡŒΡΡ Π² ΠΏΠ΅Π²Π½Ρ–ΠΉ послідовності Ρ–Π· застосуванням анамнСстичного, ΠΊΠ»Ρ–Π½Ρ–Ρ‡Π½ΠΎΠ³ΠΎ, Π»Π°Π±ΠΎΡ€Π°Ρ‚ΠΎΡ€Π½ΠΈΡ… Ρ– ΡΠΏΠ΅Ρ†Ρ–Π°Π»ΡŒΠ½ΠΈΡ… ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ–Π² обстСТСння. Нині існує різноманіття діагностичних ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ–Π² обстСТСння, Π°Π»Π΅ Π·Π°Π³Π°Π»ΠΎΠΌ питання діагностики ΠΏΠΎΡ‚Ρ€Π΅Π±ΡƒΡŽΡ‚ΡŒ глибшого Ρ– Π΄Π΅Ρ‚Π°Π»ΡŒΠ½Ρ–ΡˆΠΎΠ³ΠΎ ΠΎΠΏΡ€Π°Ρ†ΡŽΠ²Π°Π½Π½Ρ.

    Male infertility: actual questions of physiology, pathogenesis and diagnosis of disorders of the reproductive system in male

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    Introduction Infertility in men is the important problem, and not only medical, this is the most serious social problems in developed countries. It concerns both the individual and the family, and society in general. Actuality of this problem increases with age. Over the last 20 years the number infertile men rose from 30% to 50%. Male infertility gets 25-50% of all causes of infertility, the share of is. The situation is caused by multi-dimensionality of factors inherent in the present. The most significant are: socio-economic, environmental, lifestyle, marriage and family relations. And although the level of development of modern medicine is very high, often the cause of infertility in men can not be determined. Research objective To analyze the main issues of pathogenesis and diagnosis of male infertility. Materials and methods The next methods were used: the semantic evaluation of scientific documents, comparison, system and structural-logical analysis. Spermatogenesis is a complex process. It is estimated that out of testicular tank sperm contains about 440 million of cells. Male infertility can becaused by the inability of the sperm penetration in mature female egg. Secretory infertility is usually caused by two main reasons. The first- testicles pathology due to congenital or acquired factors. A special place in the development of secretory infertility has endocrine pathology of the hypothalamic-pituitary-gonadal system (congenital and acquired hypogonadism, testosterone-deficient state) and diabetes mellitus. Diagnosis of infertility in men is based on medical history, clinical, laboratory and special methods of examination. Conclusions Infertility in men is important problem, and not only medical, this is the most serious social problems in developed countries, which relate both to the individual and the family, and society in general. Spermatogenesis is a complex process, in which primitive germ cells, or spermatogonia, share, reproducing like stem cells, or gives rise to daughter cells, further differentiate into the spermatocyte. A further division of spermatocyte gives rise to cell lines eventually differentiates into Spermatid and later in the sperm. Diagnosis of male infertility can be suspected in the case of absence of the child's conception in the pair during 12 months of regular sexual life without use of all types of contraception. Clinical examination of patients includes: history, physical examination, ejaculate study, determination of the level of hormones in blood serum, ultrasound of the scrotum, prostate gland, seminal vesicles
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