Cultural imaginaries or incommensurable ontologies? Relationality and sovereignty as worldviews in socio-technological system transitions

2021 ◽  
Vol 80 ◽  
pp. 102242
Author(s):  
Chelsea Schelly ◽  
Valoree Gagnon ◽  
Kristin Arola ◽  
Andrew Fiss ◽  
Marie Schaefer ◽  
...  
Keyword(s):  
Technological System

Analysis of interconnections between technical systems on hierarchically connected technological levels of steel sheet production by hot rolling

2020 ◽  
Vol 76 (8) ◽  
pp. 847-855
Author(s):  
E. N. Shiryaeva ◽  
M. A. Polyakov ◽  
D. V. Terent'ev
Keyword(s):  
Hot Rolling ◽  
Systems Analysis ◽  
Rolling Mill ◽  
Steel Sheet ◽  
Technological System ◽  
Necessary Condition ◽  
Rolled Sheet ◽  
Technological Systems ◽  
Hot Rolling Mill ◽  
Technical Systems

Complexity of modern metallurgical plants, presence of great number of horizontal and vertical interactions between their various structural subdivisions makes it necessary to apply a systems analysis to elaborate effective measures for stable development of a plant operation. Among such measures, digitalization of a plant is widespread at present. To implement the digitalization it is necessary to have clear vision about links at all the levels of the technological system of a plant. A terminology quoted, accepted in the existing regulatory documents for defining of conceptions, comprising the technological system. It was shown, that the following four hierarchical levels of technological systems are distinguished: technological systems of operations, technological systems of processes, technological systems of production subdivisions and technological systems of plants. A hierarchical scheme of technological systems of hot-rolled sheet production at an integrated steel plant presented. Existing horizontal and vertical links between the basic plant’s shops shown. Peculiarities of flows of material, energy and information at the operation “rolling” of the technological system “hot rolling of a steel sheet” considered. As a technical system of the technological process of the hot rolling, the hot rolling mill was chosen. A structural diagram of the hot rolling mill was elaborated, the mill being consisted of reheating furnaces, roughing and finishing stand groups, with an intermediate roll-table between them, and down-coilers section. Since the rolling stands are the basic structural elements of the hot rolling mill, structural diagrams of a roughing and a finishing stands were elaborated. Results of the systems analysis of the technological and technical systems, hierarchically linked in the process of steel sheet hot rolling, can be applied for perfection of organization structure of the whole plant, as well as for elaboration mathematical models of a system separate elements functioning, which is a necessary condition for a plant digitalization.

Mathematical Model of Flat Surface Machining Inaccuracies due to Elastic Strains of Technological System

2018 ◽  
pp. 1-14 ◽  
Author(s):  
I. I. Kravchenko
Keyword(s):  
Mathematical Model ◽  
Vector Field ◽  
Model Development ◽  
Technological System ◽  
Mutual Arrangement ◽  
Real Surface ◽  
Main Bearing ◽  
Flat Surfaces ◽  
Internal Surfaces ◽  
Elastic Strains

The paper considers the mathematical model development technique to build a vector field of the shape deviations when machining flat surfaces of shell parts on multi-operational machines under conditions of anisotropic rigidity in technological system (TS). The technological system has an anisotropic rigidity, as its elastic strains do not obey the accepted concepts, i.e. the rigidity towards the coordinate axes of the machine is the same, and they occur only towards the external force. The record shows that the diagrams of elastic strains of machine units are substantially different from the circumference. The issues to ensure the specified accuracy require that there should be mathematical models describing kinematic models and physical processes of mechanical machining under conditions of the specific TS. There are such models for external and internal surfaces of rotation [2,3], which are successfully implemented in practice. Flat surfaces (FS) of shell parts (SP) are both assembly and processing datum surfaces. Therefore, on them special stipulations are made regarding deviations of shape and mutual arrangement. The axes of the main bearing holes are coordinated with respect to them. The joints that ensure leak tightness and distributed load on the product part are closed on these surfaces. The paper deals with the analytical construction of the vector field F, which describes with appropriate approximation the real surface obtained as a result of modeling the process of machining flat surfaces (MFS) through face milling under conditions of anisotropic properties.

Control of processing at multi-tool two-support setup

2020 ◽  
pp. 67-73
Author(s):  
N.D. YUsubov ◽  
G.M. Abbasova
Keyword(s):  
Degrees Of Freedom ◽  
Factor Model ◽  
Angular Displacement ◽  
Factor Models ◽  
Technological System ◽  
Displacement Control ◽  
Model Accuracy ◽  
Six Degrees Of Freedom ◽  
Angular Displacements ◽  
And Control

The accuracy of two-tool machining on automatic lathes is analyzed. Full-factor models of distortions and scattering fields of the performed dimensions, taking into account the flexibility of the technological system on six degrees of freedom, i. e. angular displacements in the technological system, were used in the research. Possibilities of design and control of two-tool adjustment are considered. Keywords turning processing, cutting mode, two-tool setup, full-factor model, accuracy, angular displacement, control, calculation [email protected]

scholarly journals Sports utility semiotics: A semantic differential study of symbolic potential in automobile design

Semiotica ◽  
2015 ◽  
Vol 2015 (207) ◽  
pp. 1-29 ◽  
Author(s):  
Andrew Wilson ◽  
Małgorzata Haładewicz-Grzelak
Keyword(s):  
Statistical Analysis ◽  
Semantic Differential ◽  
Semantic Space ◽  
Symbolic Capital ◽  
Technological System ◽  
Technological Systems ◽  
Automobile Design ◽  
Affective Attitudes ◽  
Social Prestige ◽  
Two Factors

AbstractThe article aims to illuminate the issue of symbolic potential in postmodern society through a semiotic study of car design. In Baudrillard’s terminology, we explore the experience and sociological and psychological materiality of objects that, being above objects’ perceptible materiality, constantly modify the integrity of technological systems (Baudrillard 2005 [1968]: 6). The target concepts are analyzed through Baudrillard’s lens of symbolic capital and his technological system of objects, coupled with the method of semantic differential (SD; e.g., Osgood 1979, 1981) against the insights of Tartu semiotics. Such a complex framework helps to establish affective attitudes of the subjects towards scales selected for their perceptual saliency. The analysis is based on the responses of students in a Polish university who were administered an instrument comprising 14 concepts and 37 scales. The results of statistical analysis yield a semantic space with two factors: potency and activity/dynamism, which we shall call social prestige. At this stage of the analysis we could not determine the evaluation factor. The scales that loaded significantly showed that there is indeed an increment of perceptual saliency in both extracted factors in the case of target stimuli (pickups and SUVs).

scholarly journals Interdisciplinary Decisions Application in Management, or How to Use the Experience of Workload Management of Technological System with Regard to Human Resources

Upravlenie ◽  
2017 ◽  
Vol 5 (1) ◽  
pp. 29-34
Author(s):  
Сморчкова ◽  
O. Smorchkova
Keyword(s):  
Human Resources ◽  
Cross Cultural ◽  
Point Of View ◽  
The Other ◽  
Technological System ◽  
Enterprise Management ◽  
Cultural Experience ◽  
Workload Management ◽  
System Administration ◽  
Managerial Decisions

To a modern executive officer enterprise management means challenging requirements in search of unconventional solutions in system administration organization. A whole spectrum of solutions is found when you use knowledge, traditions and managerial decisions existing in other spheres. This article contemplates concepts and philosophy that consider the problem from the other point of view and find new or specialized decisions from related areas. A comparison between workload management in technological system and human resources is used as an example. Based on this comparison implications are made about certain compatibility of these systems and possible adaptation of the existing management methods. At the end we come to the conclusion of benefit from using intersectorial and cross-cultural experience.

scholarly journals VIBRATION RESISTANCE AT PROCESSING BY END MILLS WITH VARIABLE PITCH

2018 ◽  
Vol 2018 (8) ◽  
pp. 14-24
Author(s):  
Михаил Журавлев ◽  
Mihail Zhuravlev ◽  
Константин Кравченко ◽  
Konstantin Kravchenko ◽  
Дмитрий Элькинд ◽  
...  
Keyword(s):  
Technological System ◽  
Variable Pitch ◽  
Vibration Resistance ◽  
Resonance Frequencies ◽  
Constant Pitch ◽  
Oscillation Process ◽  
End Mills ◽  
System Vibration ◽  
Circular Pitch ◽  
Resonance Oscillations

In this work there is carried out an investigation of tooth different pitches with the purpose to increase a technological system vibration resistance at processing by end mills with a variable pitch and using elements of an operation modal analysis (OMA). An experiment is carried out in the course of which there are performed tests for the level definition of vibrations and resonance frequencies of technological system oscillations at cutting by an end mill with a constant and varied pitch. The work results show that the average level of vibrations at the work with a mill with a constant pitch is higher than at the work with a mill with a varied one. The existence of some own frequencies in one direction for a mill with a constant pitch of teeth is defined that is possible in the systems with a great number of degrees of mobility. At the same time for a mill with a varied pitch the oscillations were observed only at one frequency of own oscillations in one direction. In this connection a possibility of resonance oscillations decreases. During the work of the mill with a varied pitch the vibration waves with different length appear on the surfaces of cutting. A developed physical model of a technological system oscillation process at the work with a mill with a varied pitch shows that with the increase of a circular pitch the resultant oscillation displacements decrease.

Sign in / Sign up

Export Citation Format

Share Document