Results 11 to 20 of about 9,039,965 (305)

A Medium-Resolution Near-Infrared Spectral Library of Late Type Stars: I [PDF]

open access: yes, 2003
We present an empirical infrared spectral library of medium resolution (R~2000-3000) H (1.6 micron) and K (2.2 micron) band spectra of 218 red stars, spanning a range of [Fe/H] from ~-2.2 to ~+0.3.
Almudena Alonso‐Herrero   +23 more
core   +2 more sources

Wearable learning tools [PDF]

open access: yes, 1999
In life people must learn whenever and wherever they experience something new. Until recently computing technology could not support such a notion, the constraints of size, power and cost kept computers under the classroom table, in the office or in the ...
Bowskill, Jerry, Dyer, Nick
core   +3 more sources

The Influence of Material Roughness, Hardness and Lubricant Additives on Micropitting Behaviour in Rolling-Sliding Contacts

open access: yesTribology Online, 2020
Regarding micropitting, which is one of the fatigue damages that occur under conditions where the oil film thickness is smaller than the surface roughness, the effects of hardness and roughness of the test piece and differences in lubricants were ...
Takuya Ohno   +3 more
doaj   +1 more source

Influence of the Support Structure on the Bandsawing Process when Separating LPBF Components from the Building Platform

open access: yesJournal of Machine Engineering, 2022
The method of laser powder bed fusion (LPBF) is an additive manufacturing process and allows great freedom of component geometry due to the layer-by-layer structure.
Hans-Christian Moehring   +4 more
doaj   +1 more source

Simulation Tools [PDF]

open access: yes, 2018
Simulation can enable several developments in the field of intelligent vehicles. This chapter is divided into three main subsections. The first one deals with driving simulators. The continuous improvement of hardware performance is a well-known fact that is allowing the development of more complex driving simulators.
Brazalez, Alfonso   +11 more
openaire   +2 more sources

Tool Using [PDF]

open access: yesChild Development Perspectives, 2014
Abstract Research on the development of tool use in children has often emphasized the cognitive bases of this achievement, focusing on the choice of an artifact, but has largely neglected its motor foundations. However, research across diverse fields, from evolutionary anthropology to cognitive neuroscience, converges on the idea that
Björn A, Kahrs, Jeffrey J, Lockman
openaire   +2 more sources

Suitability of natural rocks as materials for cutting tools

open access: yesSN Applied Sciences, 2021
This study presents an investigation of the usability and suitability of natural rocks as cutting tool materials. Therefore, indexable inserts are manufactured from eight different rocks and two mono minerals in this study and are used for turning of an ...
Berend Denkena   +5 more
doaj   +1 more source

Accuracy in Force Estimation Applied on a Piezoelectric Fine Positioning System for Machine Tools

open access: yesJournal of Machine Engineering, 2021
In order to improve the accuracy of machine tools, the use of additional active modules meeting the requirements of the “Plug & Produce” approach is focused.
Eckart Uhlmann   +4 more
doaj   +1 more source

Increasing Resilience of Production Systems by Integrated Design

open access: yesApplied Sciences, 2021
The paper presents a framework for considering resilience as an integrated aspect in the design of manufacturing systems. The framework comprises methods for the assessment of resilience, supply chain and production planning, flexible execution and ...
Steffen Ihlenfeldt   +6 more
doaj   +1 more source

Wear-adaptive optimization of in-process conditioning parameters during face plunge grinding of PcBN

open access: yesScientific Reports, 2022
Polycrystalline cubic boron nitride is a very hard material. Machining of this material is performed by grinding with diamond tools. Due to its high hardness, grinding tools are subjected to severe microscopic and macroscopic tool wear.
Berend Denkena   +2 more
doaj   +1 more source

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