scholarly journals Digital vehicle identity – Digital VIN in forensic and technical practice

2021 ◽  
Vol 39 ◽  
pp. 301307
Author(s):  
Roman Rak ◽  
Dagmar Kopencova ◽  
Miroslav Felcan
Keyword(s):  
Technical Practice

scholarly journals Model calculations of posterior reliability indicators for the proposal of the maintenance system

2018 ◽  
Vol 157 ◽  
pp. 08003 ◽  
Author(s):  
Jana Galliková ◽  
Vladimír Stuchlý ◽  
Roman Poprocký ◽  
Peter Volna
Keyword(s):  
A Priori ◽  
Weibull Model ◽  
Calculation Methods ◽  
Optimal Process ◽  
Model Calculations ◽  
Maintenance System ◽  
Reliability Indicators ◽  
Technical Practice ◽  
Reliability Methods ◽  
The Cost

Designing the content and scale of maintenance of machines and equipment by a priori and posterior reliability methods in considered crucial to reducing the cost of the machine's life cycle, maintaining high operational readiness and reducing the consequences of failures. In the presented paper, attention is paid to the analysis of the calculation methods of posterior reliability for calculation indicators of reliability and to the use of the specified Weibull model for reliability calculations. The obtained results are further developed for models of optimal process calculations to perform scheduled maintenance interventions. Calculations of the other RAMS (reliability, availability, maintainability and safety) indicators that are critical to the design of an optimal engineering design with regard to maintenance and which do not receive sufficient attention in technical practice are also assessed.

scholarly journals Application of nanofilters for ventilation

2019 ◽  
Vol 10 (1) ◽  
pp. 51-56
Author(s):  
Aleš Rubina ◽  
Olga Rubinová ◽  
Petr Blasinski
Keyword(s):  
High Pressure ◽  
Pressure Loss ◽  
Manufacturing Technology ◽  
Production Development ◽  
Technical Practice ◽  
Development And Utilization ◽  
Backing Layer ◽  
Application Specific

Nanotechnology is a perspective manufacturing technology, and in the technical fields, it deals with the production, development and utilization of technologies and materials with dimensions in nanometre sizes (1–100 nm). Nanofilters used in the article for filtration purposes consist from a nanolayer which is applied to a coarse textile backing layer, and they are inserted into the frames as conventional textile filters. The most commonly used materials are PP and PE polymers, as well as carbon, glass and metal filters. With the fabrication of nanotechnology-based filter, it is very important to choose materials, polymers with specific properties, which can be used for filtration function of the product itself. The results given in the main article compare the nanofilters with the main representatives of existing filter products currently available on the market. There is a problem with high pressure loss of the nanomaterial, and when we compare them with traditional filters, it is difficult to use them in technical practice, even if there exists the possibility for us to define the material and the thickness of the layer which are adapted to the application-specific application conditions.

scholarly journals Fairly Assessing U.S.- and Foreign-Trained Physician Performance Using 360-Degree Surveys

2020 ◽  
Author(s):  
Julie J Lanz ◽  
Paul Gregory ◽  
Larry Harmon
Keyword(s):  
United States ◽  
Job Performance ◽  
Medical Training ◽  
The United States ◽  
Performance Outcomes ◽  
Competency Assessment ◽  
Demographic Differences ◽  
Physician Performance ◽  
Technical Practice ◽  
Trained Physician

Abstract Background With a growing number of foreign-trained physicians joining the United States workforce, there is a need to fairly assess their job performance. The purpose of this study was to explore the fairness of a 360-degree competency assessment on U.S.- and foreign-trained physicians. Methods We conducted a non-experimental retrospective analysis on physicians working in the United States (n = 258) who participated in a physician assessment and education program between 2007 and 2017. Results There were no significant differences in performance outcomes of teamwork, motivating or discouraging behaviors, technical practice, and patient interactions based on demographic differences. Conclusions The PULSE 360 is a powerful tool that can be used to evaluate physician performance without bias in demographic differences including: gender, country of physician medical training, physician native language, or age.

scholarly journals ODREĐIVANJE TERMIČKIH VELIČINA KOD PRAVOLINIJSKOG KLIZNOG LEŽIŠTA NA BAZI DISIPACIONE FUNKCIJE

2021 ◽  
Author(s):  
Mirko Radic ◽  
◽  
Duško Kostic ◽  
Branko Pejovic ◽  
Srđan Jovic ◽  
...  
Keyword(s):  
Continuity Equation ◽  
Energy Equation ◽  
Control Volume ◽  
Mass Conservation ◽  
Dissipation Function ◽  
Second Law ◽  
Specific Calculation ◽  
Influence Of Temperature ◽  
Technical Practice ◽  
Two Dimensional Flow

In the first part of the paper, the continuity equation in the boundary layer for stationary two-dimensional flow is derived on the basis of the law of mass conservation. After that, using Newton's second law for control volume, the equation for the momentum was derived. Using the derived equations, the analysis was performed with respect to the influence of temperature. After that, on the basis of the energy balance, an energy equation was derived in which a viscous dissipation function was introduced, which enabled a wider application. At the end of the paper, the derived equations were applied to a specific calculation example from technical practice in the calculation of thermal quantities in a rectilinear sliding bearing, which was the aim of the work

Making textiles into persons: Gestural sequences and relationality in communities of weaving practice of the South Central Andes

2018 ◽  
Vol 23 (2) ◽  
pp. 239-260 ◽  
Author(s):  
Denise Y Arnold
Keyword(s):  
Communities Of Practice ◽  
Common Sense ◽  
Central Andes ◽  
Sense Making ◽  
Relational Ontology ◽  
South Central ◽  
Technical Practice ◽  
Alternative Approach ◽  
The World ◽  
Ways Of Being

The complex social and technical dimensions of weaving in contemporary Andean communities of practice are examined to suggest how these might have evolved so that populations could coordinate and make sense of their daily tasks in an emerging biocultural space. Rejecting former constructivist epistemological biases in operational studies of working practice, the article explores an alternative approach where technical practice is given meaning through ways of being in the world, and where common sense-making derives from the idea that textiles are living beings. The nurturing processes of a relational ontology where ‘making’ is ‘growing’ are traced in the patterns of learning and their gestural sequencing in weaving communities, in winding instruments that intercalate productive spheres and in finished textiles that express productive yields.

The moral dimensions of assessment in early childhood education

2018 ◽  
Vol 19 (2) ◽  
pp. 154-166
Author(s):  
Cary A Buzzelli
Keyword(s):  
Early Childhood ◽  
Early Childhood Education ◽  
Capability Approach ◽  
Moral Practice ◽  
Childhood Education ◽  
Technical Practice ◽  
Children’S Agency ◽  
Opportunities For Learning ◽  
Moral Dimensions ◽  
Learner’S Perspective

This article conceptualizes assessment in early childhood education as a moral practice using Amartya Sen’s capability approach and Thomas A Schwandt’s practical hermeneutic approach to assessment and evaluation. After describing the moral connection Sen makes between development and assessment, Schwandt’s conceptualization of evaluation is presented as reframing it from a technical practice to one based on practical moral knowledge, having moral significance for teachers and children. Assessment as a moral practice must be done from two perspectives: from the learner’s perspective to assess children’s agency in guiding their own learning, and from the environment’s perspective to assess the opportunities for learning afforded children by the environment. Balancing assessment from these two perspectives is a moral challenge for teachers. The final section examines the recent work by Margaret Carr and Jennifer Keys Adair, who offer new approaches to assessment in early childhood that incorporate methods consistent with the capability approach and Schwandt. The goal of the article is to outline a moral practice of assessment in early childhood education.

Pipe Ovalization Prediction for the Pipe-Laying Ocean System

2018 ◽  
Author(s):  
Matěj Bartecký ◽  
Radim Halama
Keyword(s):  
Plastic Deformation ◽  
Cross Section ◽  
Process Simulation ◽  
Model Calibration ◽  
Material Model ◽  
Pure Bending ◽  
Pipe Cross Section ◽  
Technical Practice ◽  
Chaboche Model ◽  
Insight Into

This contribution brings a new insight into pipe cross section ovalisation due to plastic deformation during pipe-lying process to the seabed. Firstly, the influence of material model calibration on ovalization prediction is presented on pure bending case including the Prager model, the Chaboche model and the modified Abdel-Karim–Ohno model. The mechanism responsible for cross section ovalisation was identified as the phenomenon of the accumulation of plastic deformation, the so-called ratcheting. The next part of this contribution presents main results of the pipe-laying process simulation. The pipe cross-section behavior during passing the considered pipe-laying system is studied in detail. A macro based solution makes possible to do a parametric study and to easily apply the offshore standard DNV-OS-F101 in technical practice.

scholarly journals Primary Seal Deformation in Multipane Glazing Units

2020 ◽  
Vol 10 (4) ◽  
pp. 1390
Author(s):  
Bojan Starman ◽  
Andraž Maček ◽  
Primož Rus ◽  
Štefan Obid ◽  
Aleš Kralj ◽  
...  
Keyword(s):  
Internal Heat ◽  
Technical Problems ◽  
Feasibility Assessment ◽  
Technical Practice ◽  
Unit Design ◽  
Key Factor ◽  
Excessive Strain ◽  
Proper Design ◽  
Analytical Expressions

Quadruple glazing has become a high-end standard in the field of sealed insulating glass units. With more than three glass panes a set of internal heat-related technical problems emerges. Durability, being the most pressing problem, requires careful management of the primary sealant deformation, especially under summer environmental conditions. Namely, the role of the primary seal in insulating glass units is to protect their humidity-sensitive, low-emissivity coatings from moisture and the quality of such protection is a key factor in durability. In this paper, a new methodology is proposed for a feasibility assessment of a new multipane insulating glass unit design, where proper design enables avoidance of excessive strain on the primary seal. It focuses on the calculation of the primary sealant strains, which are nonhomogeneous and multiaxial according to different loading conditions. This approach leads to analytical expressions that enable convenient identification of the critical location on the primary sealant. Finally, feasibility is assessed with the proposed methodology for the newly developed highly insulative six-pane facade unit by means of a comparison of the calculated strain state with the anticipated allowable strains, based on technical practice.

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