scholarly journals Vibro Balancing of Rotating Electric Vehicles

2021 ◽  
pp. 76-82
Author(s):  
Shota Nemsadze ◽  
◽  
Merab Tsetskhladze ◽  
Tengiz Maisuradze ◽  
◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Technical Condition ◽  
Operating Conditions ◽  
Complete Suppression ◽  
Mechanical Parts ◽  
Electric Car ◽  
Measurement Results ◽  
Mode Of Operation ◽  
The Impact ◽  
The Relationship

The optimal mode of operation of an electric car depends to some extent on the technical condition of its mechanical parts. Under operating conditions, unbalanced masses, eccentrically located in relation to the axis of rotation, may occur in the rotor of an electric car, which, in turn, will lead to premature output of machine bearings and, as a consequence, to a deterioration in dynamic characteristics. In this regard, the paper presents a method of compensating for the impact of unbalanced masses of the rotor, during which the analysis of the relationship between the amplitude of the oscillation and the angle of attachment of the compensating load is performed according to the measurement results. One of the downsides of this method is the multiple launches of the electric car and the use of concepts such as balancing sensitivity, corrective mass and more. A relatively flexible method of dynamic balancing of an electric car is shown, based on the measurement of the vibration speed amplitude and vibration phase of the electric car. Relevant oscillograms and analytical images are given, the analysis of which achieves complete suppression of electric vehicle vibration by attaching additional compensating load to the rotor.

scholarly journals Description Of Vehicle Operating Conditions And Their Impact On The Technical Condition Of Vehicles

2020 ◽  
Vol 02 (10) ◽  
pp. 37-40
Author(s):  
Ikromov Ikboljon Abdukhalilovich ◽  
◽  
Javlon Akhunov Abdujalilovich ◽  
Keyword(s):  
Technical Condition ◽  
Operating Conditions ◽  
Technical Operation ◽  
The Impact

The article provides examples of changes in the technical operation of vehicles, their application and use, as well as the impact on the technical condition of vehicles.

Research on the Impact of the Contrast between the White Text and Black Background to Visual Sharpness

2013 ◽  
Vol 469 ◽  
pp. 282-285
Author(s):  
Yu Liu ◽  
Shun Yuan Zhang ◽  
Hua Jun Xin
Keyword(s):  
Linear Relation ◽  
Quality Evaluation ◽  
Basic Research ◽  
Objective Measurement ◽  
Print Quality ◽  
Human Eye ◽  
Black Background ◽  
Measurement Results ◽  
The Impact ◽  
The Relationship

This research is to find out the relationship between objective measurement contrast and clarity to the human eye perception, via the analysis of different tone background and white text, based on the text contrast properties in ISO 13660 standard, to do some basic research for the black background of print quality evaluation. Experimental results show that perceived sharpness and contrast into positive correlation, the greater the contrast, the sharpness perception will increase accordingly， but it is not linear relation, in contrast, under the condition of smaller contrast, small changes of contrast will cause great changes in the perception of the definition, with the increase of contrast, perceived definition changes tend to be gentle, it is important to note that contrast is of the biggest objective measurement results in background of 100% black tone, whereas the human eye subjective sense of clarity is not the best, it turns out that the best sense of clarity in background tone value is around 90%.

scholarly journals Forecast of the Impact of Electric Car Battery Performance and Infrastructural and Demographic Changes on Cumulative Accessibility for the Five Most Populous Cities in Poland

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8350
Author(s):  
Piotr Rosik ◽  
Sławomir Goliszek ◽  
Tomasz Komornicki ◽  
Patryk Duma
Keyword(s):  
Labor Markets ◽  
Electric Vehicles ◽  
Demographic Changes ◽  
Key Factors ◽  
Driving Mode ◽  
Suburban Areas ◽  
Electric Car ◽  
Technological Developments ◽  
Demographic Processes ◽  
The Impact

The purpose of this study is to compare (1) technological factors (the ranges offered by the batteries of three popular electric vehicles in Poland); (2) infrastructure improvements; and (3) demographic changes and their impact on accessibility in the context of the ranges of labor markets within the 30, 60, and 90 min isochrones in moderate driving mode for the five largest cities in Poland using cumulative accessibility. We conclude that technological developments result in a much greater improvement in accessibility than demographic and infrastructural change. This is already visible with the 30 to 60 min isochrones, in particular when using the BMW in Cracow (with a more than 36% improvement in accessibility). Even greater changes, reaching as much as over 90%, are observed for the 60–90 min isochrones. The analysis shows that the shift in electromobility may be constrained by parallel demographic processes, dispersion of population in suburban areas, and the development of road infrastructure. The novelty of the approach stems from the fact that it is based on three above mentioned key factors that influence the accessibility of labor markets for EV users in the largest cities up to 2030.

scholarly journals Impacts of Consumer Ethnocentrism on Purchasing Intention of Electric Vehicles: A Case Study of Henan Province, China

2020 ◽  
Vol 13 (3) ◽  
pp. 59
Author(s):  
Xian Guo ◽  
Chanchai Bunchapattanasakda
Keyword(s):  
Electric Vehicles ◽  
Quantitative Research ◽  
Henan Province ◽  
Survey Questionnaire ◽  
Consumer Ethnocentrism ◽  
Electric Car ◽  
Purchasing Intention ◽  
The Relationship ◽  
One Way Anova

The purpose of this study is to explore the relationship between antecedents and consumer ethnocentric tendency on electric car purchasing in Henan province, China. This is a quantitative research paper, the data collected through a semi-structured survey questionnaire from 422 electric car owners in Henan province, China. One-way ANOVA and Pearson’s correlation coefficient were employed to test data variables and to test the hypothesis. This study concludes that a significant relationship between consumer ethnocentrism and socio-psychological (patriotism; correlation), demographics (age; income level), as well as purchasing intention on electric vehicles.

scholarly journals The Analysis of Effectiveness of Conveyor Belt Tensioning Systems

2020 ◽  
Vol 3 (1) ◽  
pp. 283-293
Author(s):  
Piotr Kulinowski ◽  
Piotr Kasza ◽  
Jacek Zarzycki
Keyword(s):  
Conveyor Belt ◽  
Operating Conditions ◽  
Laboratory Model ◽  
Static Characteristics ◽  
Belt Conveyor ◽  
Measuring Systems ◽  
Belt Speed ◽  
The Impact ◽  
The Relationship ◽  
Selection Of

AbstractThe publication presents the evaluation of the effectiveness of belt tensioning systems based on the results of model laboratory tests. The types of tensioning devices most commonly used in industry were selected for testing: winch, gravity, pneumatic and follower. The evaluation of the efficiency of belt tensioning devices is complex, as the tensioning system is not autonomous and is only part of the belt conveyor equipment. Therefore, the publication presents the impact of belt tension force on the durability of basic conveyor components such as the belt and its joints, and drums. The characteristics of the tested belt tensioning devices are presented and the construction and research capabilities of the laboratory model of the belt conveyor are described. Measuring systems mounted on the conveyor are described in detail, enabling recording of variable conveyor operating conditions, measuring belt speed, driving force and belt stress. The results of the research are the experimental static characteristics of the most commonly used tensioning devices, which show the relationship between the drive moment and the belt tensioning force. Obtained characteristics will allow the development of guidelines for the design and selection of the most effective belt tensioning devices.

scholarly journals Method for determining the actual group of classification (mode of operation) of load-lifting cranes

2021 ◽  
Author(s):  
Oleksiy Nyezhentsev
Keyword(s):  
Specific Energy Consumption ◽  
Operating Mode ◽  
Technical Condition ◽  
Operating Conditions ◽  
Safe Operation ◽  
The Real ◽  
Mode Of Operation ◽  
Definition Of ◽  
Actual Classification

The problems which arise during the period of expert inspection of the load-lifting cranes which have fulfilled regulatory lifetime, at definition of their actual group of classification (operating mode) are analyzed. It is established that the actual group of classification (mode of operation) of operated cranes, which is determined by the regulations on labor protection (NPAOP), often does not coincide with the passport modes of operation of cranes. A new method of diagnosing the actual classification group (operating mode) of operated cranes has been developed, which allows taking into account the real modes of their loading and classes of use using the value of specific energy consumption of cranes. The proposed method allows to reliably determining the actual group of classification of cranes that have served the regulatory lifetime, taking into account the real operating conditions of all crane mechanisms and their technical condition for the entire period of operation. This makes it possible to reasonably and qualitatively establish the terms and conditions of further safe operation of cranes.

DERIVING THE DEPENDENCIES FOR THE VIBRATING CAPACITY INTRODUCED INTO WHEELSET ASSEMBLIES

Akustika ◽  
2021 ◽  
pp. 13-15
Author(s):  
Veronika Krutova
Keyword(s):  
Technical Condition ◽  
Operating Conditions ◽  
Bridge Crane ◽  
Potential Danger ◽  
Lifting Capacity ◽  
Operator Fatigue ◽  
The Impact ◽  
Theoretical Assessment ◽  
Safe Operating ◽  
System Layout

Despite the very large difference in lifting capacity, bridge cranes have an almost identical vibration control system layout, which predetermines the general approach to the theoretical assessment of vibration and noise spectra both in the production premises and at the crane operator's workplace. The bridge crane is characterized by potential danger for not only operators but also production personnel located in the crane area within the production workshop during its operation. The safe operating conditions of cranes are determined by not only their technical condition but also the crane operator fatigue, which, in turn, is caused mainly by the impact of increased noise and vibration.

Accent Policy and Accent Modification Enterprises as Potential Indicators of Intercultural Power Relations: A Call for an Updated Research Agenda

2013 ◽  
Vol 3 (1) ◽  
pp. 22-33 ◽  
Author(s):  
Brynne D. Ovalle ◽  
Rahul Chakraborty
Keyword(s):  
International Relations ◽  
Identity Construction ◽  
Social Theory ◽  
Power Relations ◽  
Linguistic Diversity ◽  
Cultural Organization ◽  
Using Data ◽  
The Individual ◽  
The Impact ◽  
The Relationship

This article has two purposes: (a) to examine the relationship between intercultural power relations and the widespread practice of accent discrimination and (b) to underscore the ramifications of accent discrimination both for the individual and for global society as a whole. First, authors review social theory regarding language and group identity construction, and then go on to integrate more current studies linking accent bias to sociocultural variables. Authors discuss three examples of intercultural accent discrimination in order to illustrate how this link manifests itself in the broader context of international relations (i.e., how accent discrimination is generated in situations of unequal power) and, using a review of current research, assess the consequences of accent discrimination for the individual. Finally, the article highlights the impact that linguistic discrimination is having on linguistic diversity globally, partially using data from the United Nations Educational, Scientific and Cultural Organization (UNESCO) and partially by offering a potential context for interpreting the emergence of practices that seek to reduce or modify speaker accents.

Business: Making Cents of Coding Systems: Billing for Professional Services

2010 ◽  
Vol 20 (1) ◽  
pp. 3-8
Author(s):  
Dee Adams Nikjeh
Keyword(s):  
Professional Services ◽  
Speech Language Pathology ◽  
Coding Systems ◽  
Language Pathology ◽  
Program Funding ◽  
Fee Schedule ◽  
Procedure Codes ◽  
Relationship Of ◽  
The Impact ◽  
The Relationship

Abstract Administrators and supervisors face daily challenges over issues such as program funding, service fees, correct coding procedures, and the ever-changing healthcare regulations. Receiving equitable reimbursement for speech-language pathology and audiology services necessitates an understanding of federal coding and reimbursement systems. This tutorial provides information pertaining to two major healthcare coding systems and explains the relationship of these systems to clinical documentation, the Medicare Physician Fee Schedule and equitable reimbursement. An explanation of coding edits and coding modifiers is provided for use in those occasional atypical situations when the standard use of procedural coding may not be appropriate. Also included in this tutorial is a brief discussion of the impact that the Medicare Improvements for Patients and Providers Act of 2008 (HR 6331 Medicare Improvements for Patients and Providers Act [MIPPA], 2008) has had on the valuation of speech-language pathology procedure codes.

The Need to Belong and the Relationship Between Loneliness and Health

2014 ◽  
Vol 22 (4) ◽  
pp. 194-201 ◽  
Author(s):  
Freda-Marie Hartung ◽  
Britta Renner
Keyword(s):  
Individual Differences ◽  
Social Isolation ◽  
Social Situation ◽  
First Year ◽  
Health State ◽  
Need To Belong ◽  
First Year University ◽  
Perceived Social Isolation ◽  
The Impact ◽  
The Relationship

Humans are social animals; consequently, a lack of social ties affects individuals’ health negatively. However, the desire to belong differs between individuals, raising the question of whether individual differences in the need to belong moderate the impact of perceived social isolation on health. In the present study, 77 first-year university students rated their loneliness and health every 6 weeks for 18 weeks. Individual differences in the need to belong were found to moderate the relationship between loneliness and current health state. Specifically, lonely students with a high need to belong reported more days of illness than those with a low need to belong. In contrast, the strength of the need to belong had no effect on students who did not feel lonely. Thus, people who have a strong need to belong appear to suffer from loneliness and become ill more often, whereas people with a weak need to belong appear to stand loneliness better and are comparatively healthy. The study implies that social isolation does not impact all individuals identically; instead, the fit between the social situation and an individual’s need appears to be crucial for an individual’s functioning.

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