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This paper examines the design and application of a telescopic hydraulic system for amusement industry equipment that experiences cyclic passenger loads. The system comprises three hydraulic cylinders, each with different diameters, which activate at various points as the device moves. To achieve static balance and lift the main beam from a horizontal to a vertical position, the forces exerted by the cylinders were calculated using static equilibrium equations. The system's design, including the length and angle of each cylinder, was based on the technical specifications of the equipment. Analytical and numerical methods were used to ensure the correct sizing of the cylinders and the system's overall effectiveness, resulting in a structure that operates safely and efficiently.

The disinfection of weapons, internal volumes of military equipment and facilities is an important element in protecting the population and military personnel from biological agents. In order to increase the likelihood of contact of the disinfectant with the object of disinfection, to increase the activity of the disinfectant per unit of its mass, to reduce its consumption and the processing time, the liquid disinfectant preparations should be transferred effectively by the generator to a spray aerosol with a particle size of 1–30 µm. For the creation of such an aerosol, we have elaborated a special device – a tank with a lid with four diffusors, fixed on it and connected by air pipes made of rubber reinforced hose. The compressed air is supplied to the diffusors through a nozzle, fixed on the lid. An intake tube supplies disinfectant to the sprayers. This tube allows the solution to be dispensed for dispersion due to the ejection that occurs when compressed air is supplied. There is a neck, covered with micromesh, in the upper part of the lid, through which the filling process is carried out. The mesh also prevents solids from entering the tank, because the nozzles may get clogged, and that may lead to the disruption of the disinfectant dispersion process. There is a handle on the neck for the convenience of carrying the whole installation. Three short bearers are welded to the bottom of the tank, allowing the device to be installed on any horizontal surface. The dimensions of the device are: diameter – 270 mm, height – 195 mm. The volume of the tank for disinfectant is 5 dm3. The article also deals with the main techniques of using technical means for aerosol disinfection of premises and with the factors, affecting the quality of disinfection. The paper underlines the need for a systematic approach to the choice of technical means, disinfectants and modes of disinfection by the method of aerosol disinfection.

In this article, modeling of volumetric thermal processes occurring in devices operating in the cold is carried out. With the help of the program developed, results were obtained that made it possible to compare the operation of woven electric heaters located over the entire surface of the heated object with the operation of woven electric heaters when they were located only on a part of the surface of the heated object. This article may be of interest to specialists involved in the design and operation of technical devices in cold conditions, in regions of the North and the Far North. [ABSTRACT FROM AUTHOR]

The physical depreciation of electric and thermal stations and heating networks is determined by a sharp decrease in the rate of renewal of fixed assets. This article proposes an attempt to assess the residual life of a technical device (steam line) using a characteristic criterion, i.e., the creep strain of the pipe material. [ABSTRACT FROM AUTHOR]

One of the key requirements for almost every technical device is its reliable, safe and economical operation. All these requirements can only be fulfilled by the appropriate choice of the individual elements of a technical device and their appropriate constructional arrangement concept. The choice of the elements of a technical device and their constructional arrangement must be done as a matter of priority when designing it, and with respect to maximization of the operation reliability and safety. At the same time, its operation should also be economically efficient while preserving the required functions and operating parameters given by technical conditions for the given type of a technical device. Operating parameters of a technical device must be optimized due to its economical operation. The aim of this paper is therefore to describe the process of choosing a favourable operating mode of the melting furnace KOV 010/1998 for melting of Aluminium alloy AlSi7Mg0.6 based on the optimization of its operating parameters. The optimization was focused mainly on achieving as short time as possible for a single melting cycle with the lowest possible natural gas consumption. [ABSTRACT FROM AUTHOR]

The article categorizes several types of media bullshit, based on three aspects that are embedded in the very definition of “media” and create the contemporary media environment – namely media as a technical device, media as a type of connection (hierarchical or not) and media as a mediator. The functional conception of the media as meaningful to society, enshrined in its very definition, allows one to show what is not pure or what violates public order, that is, media bullshit. The analysis shows three divisions in the contemporary media environment as key elements in the production of media bullshit: inclusion-exclusion (in relation to the definition of the media as a technical device); information-communication (in relation to the media as a type of connection); truthmanipulation (in relation to the media as a mediator). [ABSTRACT FROM AUTHOR]

One possible cause of abnormal spinal column curvatures in adolescents is standing in “bad posture” for a long time. If this bad habit can be corrected on time, by creating a dynamic stereotype for correct body position maintenance, further health problems can be avoided. To present a technical device for prevention of scoliotic deformations signaling when the angles of inclination forward or sideward are bigger than preliminary set ones. To elaborate an experimental protocol based on analysis of EMG activity (EMGs) of spine muscles for verification of its effect. Study design: Devising of the device and of software for EMGs processing. Pilot experiments were conducted recording EMGs of eight spinal muscles for estimation of the device efficiency. Different mathematical procedures were proposed and programmed for data processing and illustration. Two device prototypes (with sound and vibration signal) are developed and experimentally used. EMG data from 20 motor tasks (half of them with carrying the device) are processed. The device can be used as a simple tool for biofeedback-type pupil teaching of dynamic stereotype for right posture maintenance. The developed software for EMGs processing can be used for tracing the effect of using the device.

The introduction of a new device disrupting the conditions of daily mobility- notably work-related constraints – produces a set of situations that are relevant to analyze the routines dynamics and their ability to be transformed. In this paper we question their permeability and how these routines are put to the test for each individual in the context of a demonstration project about electric mobility carried by companies and local authorities in the territory of Yvelines in 2011 -2012 (SAVE experimentation). How and to what extent do the electric vehicles experimenters manage to preserve, reformulate or reconfigure their mobility routines to meet their travel needs? What are the material, cognitive and symbolic dynamics at work in these adjustments? We present here the results of a survey conducted at the intersection of sociology, anthropology and geography aiming to understand how individuals organize themselves on a daily basis despite these material constraints.

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The aim of this study was to examine swimmers' activity-technical device coupling during an experimental protocol (MAD-system). The study was conducted within a course-of-action theoretical and methodological framework. Two types of data were collected: (a) video recordings and (b) verbalizations during post-protocol interviews. The data were processed in two steps: (a) reconstruction of each swimmer's course of action and (b) comparison of the courses of action. Analysis from the actors' point of view allowed a description of swimmer-technical device coupling. The results showed that the technical device modified the athletes' range of perceptions and repertoire of actions. They also indicated that changes in coupling between the swimmers and the MAD-system were linked to utilization constraints: the swimmers' experiences were transformed in the same speed intervals, suggesting that this was an essential situational constraint to swimmer-technical device coupling. This study highlights how a technical device and the conditions of its use changed athletes' activity and suggests that it is important to develop activity-centred design in sport. [ABSTRACT FROM AUTHOR]