Results 31 to 40 of about 694,974 (290)

FINITE ELEMENT ANALYSIS OF THE INFLUENCE OF EDGE ROUNDNESS ON THE STRESSES AND CUTTING FORCES FOR CERAMIC CUTTING TOOLS

open access: yesDiyala Journal of Engineering Sciences, 2009
This work summarizes the effect of edge round preparation for three types of ceramic cutting tool materials (Al2O3/ZrO2, Al2O3/ TiC, Si3N4/Y2O3) upon cutting forces and stress distribution on the cutting tool in orthogonal cutting as determined with ...
Suha K. Shehab
doaj   +1 more source

Leaving the ISCO: the inner edge of a black-hole accretion disk at various luminosities [PDF]

open access: yes, 2010
The "radiation inner edge" of an accretion disk is defined as the inner boundary of the region from which most of the luminosity emerges. Similarly, the "reflection edge" is the smallest radius capable of producing a significant X-ray reflection of the ...
A. Różańska   +61 more
core   +3 more sources

Helium-enhanced planets along the upper edge of the radius valley

open access: yesNature Astronomy, 2022
The low mean densities of sub-Neptunes imply that they formed within a few million years and accreted primordial envelopes. Because these planets receive a total X-ray and extreme ultra-violet flux that is comparable to the gravitational binding energy of their envelopes, their primordial hydrogen-helium atmospheres are susceptible to mass loss. Models
Isaac Malsky   +3 more
openaire   +2 more sources

EMULATION OF THE MICROPROCESSOR INTEL 80386

open access: yesDiyala Journal of Engineering Sciences, 2009
Microprocessor simulation is one of the recent applications of computer design. It is used for emulating the microprocessors for some purposes such as; learning microprocessor structure and assembly language in laboratories in universities.
SAMEERA A'AMER ABDUL-KADER
doaj   +1 more source

Distance-Based Phylogeny Reconstruction: Safety and Edge Radius [PDF]

open access: yes, 2015
A phylogeny is an evolutionary tree tracing the shared history, including common ancestors, of a set of extant species or “taxa”. Phylogenies are increasingly reconstructed on the basis of molecular data (DNA and protein sequences) using statistical techniques such as likelihood and Bayesian methods.
Gascuel, Olivier   +2 more
openaire   +3 more sources

Ways to constrain neutron star equation of state models using relativistic disc lines

open access: yes, 2011
Relativistic spectral lines from the accretion disc of a neutron star low-mass X-ray binary can be modelled to infer the disc inner edge radius. A small value of this radius tentatively implies that the disc terminates either at the neutron star hard ...
Akmal   +45 more
core   +1 more source

Edge Scaling Limit of the Spectral Radius for Random Normal Matrix Ensembles at Hard Edge [PDF]

open access: yesJournal of Statistical Physics, 2020
We investigate a random normal matrix model with eigenvalues forced to be in the droplet, the support of the equilibrium measure associated with an external field. For radially symmetric external fields, we show that the fluctuations of the spectral radius around a hard edge tend to follow an exponential distribution as the number of eigenvalues tends ...
openaire   +2 more sources

Effect of die edge radius on forming of burnished surface in finish blanking (Observation by digital image correlation)

open access: yesNihon Kikai Gakkai ronbunshu
Finish blanking is a process that increases the burnished surface using rounded cutting edge of the tools. In this study, the double-sided blanking was carried out using dies with different radius of cutting edges to investigate the effect of the radius ...
Masahiro SASADA   +3 more
doaj   +1 more source

Validation of a Temperate Fourth Planet in the K2-133 Multi-planet System

open access: yes, 2019
We present follow-up observations of the K2-133 multi-planet system. Previously, we announced that K2-133 contained three super-Earths orbiting an M1.5V host star - with tentative evidence of a fourth outer-planet orbiting at the edge of the temperate ...
Poppenhaeger, K.   +2 more
core   +1 more source

Local And Global Colorability of Graphs [PDF]

open access: yes, 2015
It is shown that for any fixed $c \geq 3$ and $r$, the maximum possible chromatic number of a graph on $n$ vertices in which every subgraph of radius at most $r$ is $c$ colorable is $\tilde{\Theta}\left(n ^ {\frac{1}{r+1}} \right)$ (that is, $n^\frac{1 ...
Alon, Noga, Ben-Eliezer, Omri
core   +2 more sources

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