Results 31 to 40 of about 29,270 (312)
International Journal of Mathematics and Mathematical Sciences, 2004 We introduce and investigate flat semimodules and k‐flat semimodules .We hope these concepts will have the same importance in semimodule theory as in the theory of rings and modules.
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Applied SciencesThis paper presents a comparative analysis of the results obtained from three different measuring machines using tactile measurement techniques. The influence of the number and method of collecting measurement points on the detection of shape errors of ...
Grzegorz Włażewski +4 more
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Frontiers in Bioengineering and Biotechnology, 2021 Flatness error is an important factor for effective evaluation of surface quality. The existing flatness error evaluation methods mainly evaluate the flatness error of a small number of data points on the micro scale surface measured by CMM, which cannot
Han Shu +3 more
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MicromachinesDifficult-to-cut titanium matrix composites (TMCs) are widely used in the aerospace, automotive, and defense sectors due to their excellent physical properties.
Shen Niu +4 more
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Journal of Algebra, 1999 The context of this paper is complete cohomology and modules are of type \((FP)_\infty\). Let \(\text{LH}{\mathbf F}\) denote the class of hierarchically decomposable groups and \(\text{H}_1{\mathbf F}\) the subclass of groups acting on a finite dimensional contractible CW-complex, in such a way that the setwise stabiliser of each cell is equal to the ...
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Weak factorization systems for S-acts
, 2013 The concept of a weak factorization system has been studied extensively in homotopy theory and has recently found an application in one of the proofs of the celebrated flat cover conjecture, categorical versions of which have been presented by a number ...
Renshaw, James +3 more
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Digital modeling geometrical and macrorough parameters of a highway [PDF]
Компьютерные исследования и моделирование, 2012 Original representation of statistical digital model of measurement of a macroroughness on a local site (to 15) consisting of determined (bias), correlated (standard periodic making and periodic deviations from flatness) and actually casual making ...
Andrei Viktorovich Kochetkov +1 more
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Development and Validation of an Affordable Calibration Method for Surface Plates
Ingeniería e InvestigaciónThe measurement and calibration of flat surfaces is highly relevant for precision engineering, length metrology, and optical systems. Hence, many National Metrology Institutes (NMIs) tend to offer calibration services in this regard.
Daniela Garzón +4 more
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Wake Width: Discussion of Several Methods How to Estimate It by Using Measured Experimental Data
Energies, 2021 Several methods of defining and estimating the width of a turbulent wake are presented and tested on the experimental data obtained in the wake past an asymmetric prismatic airfoil NACA 64(3)-618, which is often used as tip profile of the wind turbines ...
Daniel Duda +2 more
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Residual flatness error correction in three-dimensional imaging confocal microscopes
, 2018 Imaging Confocal Microscopes (ICM) are highly used for the assessment of three-dimensional measurement of technical surfaces. The benefit of an ICM in comparison to an interferometer is the use of high numerical aperture microscope objectives, which ...
Bermúdez, Carlos +5 more
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