Results 71 to 80 of about 312,423 (288)

Inflationary predictions and moduli masses

open access: yesPhysics Letters B, 2015
A generic feature of inflationary models in supergravity/string constructions is vacuum misalignment for the moduli fields. The associated production of moduli particles leads to an epoch in the post-inflationary history in which the energy density is ...
Kumar Das   +2 more
doaj   +1 more source

On moduli of k‐convexity [PDF]

open access: yesAbstract and Applied Analysis, 1999
If \(X\) is a Banach space with unit ball \(B_X\), the classical modulus of convexity [\textit{J. A. Clarkson}, Trans. Am. Math. Soc. 40, 396-414 (1936; Zbl 0015.35604)] is defined by: \[ \delta_X(\varepsilon) := \inf \{ 1 - \|x_0 + x_1\|/2 : x_0,x_1 \in B_X, \|x_1 - x_0\|\geq \varepsilon\}. \] \textit{V. I. Gurarij} [Mat. Issled. 2, No.~1(3), 141-148 (
openaire   +3 more sources

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann   +3 more
wiley   +1 more source

Relationship between deflection basin parameters and backcalculated pavement layer moduli [PDF]

open access: yesArchives of Civil Engineering
In the case analysed, a glass fibre mesh was applied under the asphalt layer during a rehabilitation treatment. Because only one lane was reinforced, the test section can be used to observe the influence of glass fibre mesh on the relationship between ...
Mateusz Kałuża, Mirosław Kotasinski
doaj   +1 more source

Vortices and Flat Connections

open access: yes, 1998
At Bradlow's limit, the moduli space of Bogomol'nyi vortices on a compact Riemann surface of genus $g$ is determined. The K\"{a}hler form, and the volume of the moduli space is then computed.
Nasir, S. M.
core   +1 more source

K-moduli, moduli of smoothness, and Bernstein polynomials on a simplex

open access: yesIndagationes Mathematicae, 1991
Let \(f\in C[0,1]\) and let \(B_ n(f,x)\) be the classical Bernstein polynomials associated to \(f\). The approximation behavior of \(B_ n(f,x)\) is related to the weighted \(K\)-modulus \(K_ \varphi^ 2(f,t)\), for example by \(\| B_ n f-f\|_ \infty \leq C\cdot K_ \varphi^ 2\bigl(f,{1\over{n+1}}\bigr)\). (See, for example, \textit{H.
Berens, H., Xu, Y.
openaire   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

On Generalized Moduli of Quasi-Banach Space

open access: yesJournal of Function Spaces, 2018
We shall discuss three generalized moduli such as generalized modulus of convexity, modulus of smoothness, and modulus of Zou-Cui of quasi-Banach spaces and give some important properties of these moduli.
Young Chel Kwun   +4 more
doaj   +1 more source

Vortices, Instantons and Branes

open access: yes, 2003
The purpose of this paper is to describe a relationship between the moduli space of vortices and the moduli space of instantons. We study charge k vortices in U(N) Yang-Mills-Higgs theories and show that the moduli space is isomorphic to a special ...
A. Achucarro   +50 more
core   +1 more source

Phenomenological and Physically Based Modeling of Flow Stress and Strengthening Mechanism of Inconel 718

open access: yesAdvanced Engineering Materials, EarlyView.
Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein   +2 more
wiley   +1 more source

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