Study of two methods for comparing laser measuring interferometric systems to reduce the error in the transmission of a unit of length

E3S Web of Conferences ◽

10.1051/e3sconf/202131001001 ◽

2021 ◽

Vol 310 ◽

pp. 01001

Author(s):

Irina Novikova ◽

Denis Sokolov

Keyword(s):

Experimental Study ◽

The State ◽

Special Standard ◽

Standard Measuring ◽

Transmission Errors ◽

Measuring Complex ◽

Unit Of Length ◽

Orthogonal Methods

The article presents the results of an experimental study of coaxial and orthogonal methods for comparing laser measuring interferometric systems using a standard measuring complex of length from the State Primary Special Standard of a Unit of Length in the range from 2 to 60 m. transmission errors of the unit of length up to 0.5 microns.

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Calculation of uncertainty of a level unit measurement on the state special standard of the 1-digit unit length (level) in the range of 0,01…20 m

Automation Telemechanization and Communication in Oil Industry ◽

10.30713/0132-2222-2018-4-22-27 ◽

2018 ◽

pp. 22-27

Author(s):

V.Sh. Bikkulov ◽

◽

A.V. Kondakov ◽

Keyword(s):

Unit Length ◽

The State ◽

Special Standard ◽

State Special Standard

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Get 130-2019: State Primary Special Standard of Unit of Length in Region of Measurements of Deviations from Straightness and Flatness

Measurement Techniques ◽

10.1007/s11018-021-01913-5 ◽

2021 ◽

Author(s):

Yu. R. Shimolin ◽

L. A. Tribushevskaya ◽

A. S. Seregina

Keyword(s):

Special Standard ◽

Unit Of Length

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The growth and collapse of cavitation bubbles near composite surfaces

Journal of Fluid Mechanics ◽

10.1017/s0022112089001436 ◽

1989 ◽

Vol 203 ◽

pp. 199-214 ◽

Cited By ~ 72

Author(s):

A. Shima ◽

Y. Tomita ◽

D. C. Gibson ◽

J. R. Blake

Keyword(s):

Experimental Study ◽

Bubble Size ◽

The State ◽

Bubble Collapse ◽

Viscoelastic Materials ◽

Effective Parameters ◽

Composite Surface ◽

Surface Stiffness ◽

Cavitation Bubbles

An experimental study has been made of the growth and collapse of a bubble near a composite surface consisting of two viscoelastic materials. The migratory characteristics of the bubble are examined by means of streak photography. The bubble migration depends not only on the properties of the composite surface but also on bubble size and distance from the surface. Both the surface stiffness and surface inertia are considered to be effective parameters contributing to the bubble migration: the former seeming to be a particularly important factor. The state of neutral bubble collapse, with no migration towards or away from a surface, can be made to occur with an appropriate combination of the surface stiffness and inertia.

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Hate Speech as an Indicator for the State of the Society

Journal of Media Psychology Theories Methods and Applications ◽

10.1027/1864-1105/a000294 ◽

2021 ◽

pp. 1-13

Author(s):

Svenja Schäfer ◽

Michael Sülflow ◽

Liane Reiners

Keyword(s):

Experimental Study ◽

Public Opinion ◽

Sexual Orientation ◽

Social Cohesion ◽

Hate Speech ◽

Social Groups ◽

The State ◽

Controversial Issues ◽

User Comments ◽

Research Questions

Abstract. Previous research indicates that user comments serve as exemplars and thus have an effect on perceived public opinion. Moreover, they also shape the attitudes of their readers. However, studies almost exclusively focus on controversial issues if they explore the consequences of user comments for attitudes and perceived public opinion. The current study wants to find out if hate speech attacking social groups due to characteristics such as religion or sexual orientation also has an effect on the way people think about these groups and how they think society perceives them. Moreover, we also investigated the effects of hate speech on prejudiced attitudes. To explore the hypotheses and research questions, we preregistered and conducted a 3 × 2 experimental study varying the amount of hate speech (none/few/many hateful comments) and the group that was attacked (Muslims/homosexuals). Results show no effects of the amount of hate speech on perceived public opinion for both groups. However, if homosexuals are attacked, hate speech negatively affects perceived social cohesion. Moreover, for both groups, we find interaction effects between preexisting attitudes and hate speech for discriminating demands. This indicates that hate speech can increase polarization in society.

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