scholarly journals Assessment of vehicle damage from the point of a complex technical system with its own structure

2021 ◽  
Vol 1 (3) ◽  
pp. 42-48
Author(s):  
I.I. Tupitsyn ◽  
◽  
S.G. Zubris'kiy ◽  
P.A. Krasavin ◽  
◽  
...  
Keyword(s):  
Contact Point ◽  
Grid Method ◽  
Technical System ◽  
Measuring Instruments ◽  
Time Interval ◽  
Diagnostic Parameters ◽  
Different Types ◽  
Complex Technical System ◽  
Method Of Assessment ◽  
The Given

There is considered a part of the study of post-repair reliability of vehicles from the point of a complex technical system in the form of an algorithm for evaluating diagnostic parameters (probable connections). The problem of the reliability of vehicles in operation is legally put under the control of the President of the Russian Federation and is included in the strategy for ensuring road safety until 2023, which is part of the National Project “Safe Roads”. The initial data of the study at the stage of evaluating probable connections are the parameters of the vehicle movement in the pre-accident time interval and the voltage acting at the contact point of the object, which is obtained based on these parameters. The main method of assessment is the cal-culation of cells of different types using the grid method, depending on the nature of the damage to the vehicle. In order to decompose the contact point into cells of different types, it is recommended to use appropriate certified measuring instruments and certified equipment: flaw detectors and so on. For the convenience of using the algorithm and reducing the error of using the given mathemat-ical model in a comprehensive assessment of the reliability of vehicles, the article provides a defini-tion of the reduced volume and correction coefficients. The output data of the algorithm for evaluating diagnostic parameters are the updated values of stresses at the contact point of the object under study, as well as a detailed picture of the distribution of strain energy in the object. As a result, the obtained values can be used for further evaluation of changes in the regulated values of the vehicle properties established by the manufacturer and controlled within the framework of the failure prevention system or technical inspection.

Embodied displacements in young German children’s storytelling

2019 ◽  
Vol 3 (1-2) ◽  
pp. 168-195 ◽  
Author(s):  
Vivien Heller
Keyword(s):  
Picture Book ◽  
Book Reading ◽  
Lexical Resources ◽  
Narrative Space ◽  
Multimodal Analysis ◽  
Different Types ◽  
German Speaking ◽  
Picture Book Reading ◽  
The Given

This paper is concerned with embodied processes of joint imagination in young children’s narrative interactions. Based on Karl Bühler’s notion of ‘deixis in the imagination’, it examines in detail how a 19-month-old German-speaking child, engaged in picture book reading with his mother, brings about different subtypes of deixis in the imagination by either ‘displacing’ what is absent into the given order of perception (e.g. by using the hand as a token for an object) or displacing his origo to an imagined space (e.g. by kinaesthetically aligning his body with an imagined body and animating his movements). Drawing on multimodal analysis and the concept of layering in interaction, the study analyses the ways in which the picture book as well as deictic, depictive, vocal and lexical resources are coordinated to evoke a narrative space, co-enact the storybook character’s experiences and produce reciprocal affect displays. Findings demonstrate that different types of displacement are in play quite early in childhood; displacements in the dimension of space and person are produced through layerings of spaces, voices and bodies.

Utilization of remote sensing for estimation of scale of cutting and growing of forest zones

2017 ◽  
Vol 920 (2) ◽  
pp. 57-60
Author(s):  
F.E. Guliyeva
Keyword(s):  
Remote Sensing ◽  
Fixed Time ◽  
Time Interval ◽  
Time Points ◽  
Average Value ◽  
Time Period ◽  
Remote Estimation ◽  
The Given ◽  
Forest Cutting

The study of results of relevant works on remote sensing of forests has shown that the known methods of remote estimation of forest cuts and growth don’t allow to calculate the objective average value of forests cut volume during the fixed time period. The existing mathematical estimates are not monotonous and make it possible to estimate primitively the scale of cutting by computing the ratio of data in two fixed time points. In the article the extreme properties of the considered estimates for deforestation and reforestation models are researched. The extreme features of integrated averaged values of given estimates upon limitations applied on variables, characterizing the deforestation and reforestation processes are studied. The integrated parameter, making it possible to calculate the averaged value of estimates of forest cutting, computed for all fixed time period with a fixed step is suggested. It is shown mathematically that the given estimate has a monotonous feature in regard of value of given time interval and make it possible to evaluate objectively the scales of forest cutting.

scholarly journals Optimal Control and Positional Controllability in a One-Sector Economy

Games ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 11
Author(s):  
Nikolai Grigorenko ◽  
Lilia Luk’yanova
Keyword(s):  
Optimal Control ◽  
Production Capacity ◽  
Quality Criterion ◽  
Zero Order ◽  
Suboptimal Control ◽  
Time Interval ◽  
Bounded Control ◽  
Optimal Value ◽  
Current Production ◽  
The Given

A model of production funds acquisition, which includes two differential links of the zero order and two series-connected inertial links, is considered in a one-sector economy. Zero-order differential links correspond to the equations of the Ramsey model. These equations contain scalar bounded control, which determines the distribution of the available funds into two parts: investment and consumption. Two series-connected inertial links describe the dynamics of the changes in the volume of the actual production at the current production capacity. For the considered control system, the problem is posed to maximize the average consumption value over a given time interval. The properties of optimal control are analytically established using the Pontryagin maximum principle. The cases are highlighted when such control is a bang-bang, as well as the cases when, along with bang-bang (non-singular) portions, control can contain a singular arc. At the same time, concatenation of singular and non-singular portions is carried out using chattering. A bang-bang suboptimal control is presented, which is close to the optimal one according to the given quality criterion. A positional terminal control is proposed for the first approximation when a suboptimal control with a given deviation of the objective function from the optimal value is numerically found. The obtained results are confirmed by the corresponding numerical calculations.

Evaluation of Effect of Nd:YAG and Er:YAG Lasers on the Periodontal Pathogens: A Systematic Review

2020 ◽  
Author(s):  
Hosein Eslami
Keyword(s):  
Systematic Review ◽  
Chronic Periodontitis ◽  
Complementary Therapy ◽  
Root Surface ◽  
Laser Wavelength ◽  
Time Interval ◽  
Periodontal Pathogens ◽  
Probing Depth ◽  
Treatment Procedures ◽  
The Given

Introduction: By removing the periodontal pathogens and even the invasive bacteria attacking the tissues as well as the lack of normal periodontal treatment procedures, using a laser, as a complementary therapy, can have positive and useful impacts. The present study aims at investigating the impacts of Nd:YAG and Er:YAG laser on periodontal pathogens. Materials and Methods: In this systematic review, articles in the databases of Google Scholar, PubMed and Scopus were searched within 2000-2020. All information is classified into a table. Results: In searching the aforementioned databases and considering the given time interval, 78 articles were found in connection to the searched keywords and abstracts. Once the repeated titles and articles were deleted, 25 studies were selected which were decreased to 16 by the meticulous review by the assessment team. The full text of these 16 articles was reviewed. To make the final choice, 8 articles had the inclusion criteria which included the objectives of this study. Conclusion: To use the laser in treating the chronic periodontitis, an evidence-based study seems to be conducted. A few scientific pieces of evidence are indicating the advantage of a special laser wavelength in the common treatments.Based on most researches reviewed in this study, the results of the complementary application of Nd:YAG and Er:YAG lasers in treating the chronic periodontitis are the better than the ones obtained from the normal teeth scaling and planning the teeth root surface in terms of the reduced probing depth and subgingival bacteria population. The decision was made to use the laser in periodontal surgery based on the advantages such as hemostasis and less pain after the treatment. However, more studies are needed to apply the laser in periodontal treatments.

DIGITAL DESIGN OPTIMIZATION OF A COMPLEX TECHNOLOGICAL SYSTEM

2021 ◽  
Vol 3 ◽  
pp. 85-90
Author(s):  
A.R. ABLAEV ◽  
E.V. KHROMOV ◽  
R.R. ABLAEV ◽  
A.P. POLYAKOV
Keyword(s):  
Design Optimization ◽  
Level Structure ◽  
Phenomenological Approach ◽  
Digital Design ◽  
Technical System ◽  
Software Support ◽  
Complex Technical System ◽  
Complex Optimization ◽  
Complex Technical Systems ◽  
Technical Systems

The article investigates the issue of optimization of a complex technical system at the stage of its design using a heuristic–phenomenological approach. The analysis of the principles of complex optimization of complex technical systems is carried out. A four–level structure for the synthesis of methodological, informational and software support for complex optimization of complex technical systems is proposed, which will allow controlling the programmable parameters of complex technical systems at each stage of their design.

Evaluativity of degree achievements and verbal prefixes: Evidence from Czech morphology

2021 ◽  
Author(s):  
Mojmír Dočekal ◽  
Lucia Vlášková
Keyword(s):  
Standard Theory ◽  
Scalar Theory ◽  
Verbal Prefixes ◽  
Different Types ◽  
Puzzling Problem ◽  
The Given

Abstract The telicity behavior of degree achievements has been a puzzling problem to many linguists. The most successful and currently standard theory (Kennedy & Levin 2008) treats them as degree expressions lexicalizing different types of scales, which in turn influence the resulting evaluative or non-evaluative interpretation. While it may account for English, this theory does not hold up cross-linguistically. We challenge the scalar theory with new Slavic data and show that verbal prefixes influence the (non-)evaluative interpretation of degree achievements more than their underlying scales do. This proposal is formalised as an addition of two type shifters, morphosyntactically realised as prefixes, which, in result, have an evaluative/non-evaluative effect on the given degree achievement.

scholarly journals Bottlenecks, Modules, and Dynamic Architectural Capabilities

2018 ◽  
Author(s):  
Carliss Y. Baldwin
Keyword(s):  
Property Rights ◽  
Value Creation ◽  
Technical System ◽  
Maximum Effect ◽  
Organizational Boundaries ◽  
Value Capture ◽  
Technical Problems ◽  
Technical Architecture ◽  
Complex Technical System ◽  
Technical Systems

How do firms create and capture value in large technical systems? In this paper, I argue that the points of both value creation and value capture are the system’s bottlenecks. Bottlenecks arise first as important technical problems to be solved. Once the problem is solved, Then the solution in combination with organizational boundaries and property rights can be used to capture a stream of rents. The tools a firm can use to manage bottlenecks are, first, an understanding first of the technical architecture of the system; and, second, an understanding of the industry architecture in which the technical system is embedded. Although these tools involve disparate bodies of knowledge, they must be used in tandem to achieve maximum effect. Dynamic architectural capabilities provide managers with the ability to see a complex technical system in an abstract way and change the system’s structure to manage bottlenecks and modules in conjunction with the firm’s organizational boundaries and property rights.

Predictive Modelling of the Warming up Times for Thermoelectric Converters

2014 ◽  
Vol 1040 ◽  
pp. 965-968 ◽  
Author(s):  
Yuliana K. Atroshenko ◽  
Irina P. Ozerova ◽  
Pavel A. Strizhak
Keyword(s):  
Temperature Field ◽  
Sensitive Element ◽  
Predictive Modelling ◽  
Nonstationary Process ◽  
Heating Time ◽  
Heat Time ◽  
Different Types ◽  
The Given ◽  
Thermoelectric Converters ◽  
Thermocouple Junction

In the present article the question of simulation of nonstationary process of heat transport in a sensitive element of the thermoelectric transformer with an uninsulated seal is considered. The model allows defining and comparing the heating time of a thermocouple junction up to the given temperature for different types of thermocouples. In this article the values obtained by means of modelling the heat time of different thermocouples and also a temperature field in a sensitive element of the thermoelectric transformer are given.

scholarly journals Quasilinearization of the Initial Value Problem for Difference Equations with “Maxima”

2012 ◽  
Vol 2012 ◽  
pp. 1-17 ◽  
Author(s):  
S. Hristova ◽  
A. Golev ◽  
K. Stefanova
Keyword(s):  
Difference Equation ◽  
Difference Equations ◽  
Initial Value Problem ◽  
Linear Difference Equation ◽  
Successive Approximations ◽  
Time Interval ◽  
Initial Value ◽  
Past Time ◽  
The Given ◽  
Unknown Solution

The object of investigation of the paper is a special type of difference equations containing the maximum value of the unknown function over a past time interval. These equations are adequate models of real processes which present state depends significantly on their maximal value over a past time interval. An algorithm based on the quasilinearization method is suggested to solve approximately the initial value problem for the given difference equation. Every successive approximation of the unknown solution is the unique solution of an appropriately constructed initial value problem for a linear difference equation with “maxima,” and a formula for its explicit form is given. Also, each approximation is a lower/upper solution of the given mixed problem. It is proved the quadratic convergence of the successive approximations. The suggested algorithm is realized as a computer program, and it is applied to an example, illustrating the advantages of the suggested scheme.

scholarly journals Discourse Intonation and Information Structure: An Empirical Study of Existential There Constructions in Non-native Spontaneous Speech

2016 ◽  
Vol 8 (2) ◽  
pp. 139-153
Author(s):  
Judit Nagy
Keyword(s):  
Language Learners ◽  
Information Structure ◽  
Sentence Type ◽  
Spontaneous Speech ◽  
New Information ◽  
Different Types ◽  
Discourse Intonation ◽  
Problematic Area ◽  
Accented English ◽  
The Given

Abstract The management of given and new information is one of the key components of accomplishing coherence in oral discourse, which is claimed to be a problematic area for language learners (Celce-Murcia, Dörnyei, and Thurrell 1995: 14). Research on discourse intonation proposes that instead of the given/new dichotomy, givenness should be viewed as a continuum, with different types of accessibility (Baumann & Grice 2006). Moreover, Prince (1992) previously categorized information structure into Hearer-old/Hearer-new and Discourse-old/Discourse-new information. There is consensus on the fact that focus or prominence associated with new information is marked with nuclear pitch accent, and its main acoustic cue, fundamental frequency (f0) (Ward & Birner 2001: 120). Non-native intonation has been reported to display numerous differences in f0 range and patterns compared to native speech (Wennerstrom 1994; Baker 2010). This study is an attempt to address the issue of marking information structure in existential there sentences by means of f0 in non-native spontaneous speech. Data originates from task-based interactions in the Wildcat Corpus of Native- and Foreign-Accented English (Van Engen et al. 2010). This paper examines two issues: (1) information structure in relation to the notions of givenness and different types of accessibility (Baumann & Grice 2006) and to Prince’s (1992) multidimensional taxonomy and (2) the use of f0 peaks to mark the prominence of new information. Several differences were measured among native speakers regarding the use of f0, sentence type, and complexity.

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