Results 91 to 100 of about 16,387 (186)

Properties of five toughened matrix composite materials [PDF]

open access: yes
The use of toughened matrix composite materials offers an attractive solution to the problem of poor damage tolerance associated with advanced composite materials.
Cano, Roberto J., Dow, Marvin B.
core   +1 more source

Non-universal Critical Quantities from Variational Perturbation Theory and Their Application to the BEC Temperature Shift

open access: yes, 2004
For an O(N) symmetric scalar field theory with Euclidean action integral d^3x [1/2 |nabla phi|^2 + 1/2 r phi^2 + 1/4! u phi^4], where phi = (phi_1,...,phi_N) is a vector of N real field components, variational perturbation theory through seven loops is ...
B. Kastening   +5 more
core   +1 more source

Impact of sentimental factors on stock portfolio returns –an empirical analysis

open access: yesHeliyon
This study aims to introduce an integrated model for understanding the influence of various sentimental factors in conjunction with macroeconomic factors on portfolio returns across ten industry sectors within the US market. These sentimental factors are
Rajesh Kumar, Sujit K S
doaj   +1 more source

G40-800/5260 Carbon Fiber/Bismaleimide Composite Material: High Temperature Characteristics of Static and Fatigue Strengths

open access: yes, 2011
A lot of polymer composite materials are being used in the structures of civil transport aircraft currently under development, such as the Boeing 787, Airbus A350, and Bombardier C Series. Their percentages of structural weight are announced at 50%, 53% and 46%, respectively.
Shimokawa, Toshiyuki   +2 more
openaire   +3 more sources

From emotion to action: How intraday investor sentiment drives market microstructure

open access: yesBorsa Istanbul Review
This study introduces the concept of “investor sentiment slices” to capture distinct emotional patterns within a single trading day. Using 4.41 million social media posts and natural language processing, we construct high-frequency sentiment indices ...
Qing Liu, Yanfeng Liu, Hosung Son
doaj   +1 more source

Preparation and characterization of low-cost albite and wollastonite glass-ceramics based on natural raw materials

open access: yesNext Materials
Five glass mixtures based on albite and wollastonite were designed from natural raw materials found in the Earth's crust: limestone, silica sand, and feldspar.
G.A. Khater   +4 more
doaj   +1 more source

Lattice Gauge Theory Sum Rule for the Shear Channel

open access: yes, 2010
An exact expression is derived for the $(\omega,p)=0$ thermal correlator of shear stress in SU($N_c$) lattice gauge theory. I remove a logarithmic divergence by taking a suitable linear combination of the shear correlator and the correlator of the energy
H. B. Meyer   +2 more
core   +1 more source

Non-perturbative improvement of the vector current in Wilson lattice QCD

open access: yes, 2015
Many observables of interest in lattice QCD are extracted from correlation functions involving the vector current. If Wilson fermions are used, it is therefore of practical importance that, besides the action, the current be O($a$) improved in order to ...
Harris, Tim, Meyer, Harvey B.
core   +1 more source

G40 - Ein Schritt zu einem CO2-neutralen Benzinkraftstoff

open access: yesMTZ - Motortechnische Zeitschrift, 2022
Weyhing, Thomas   +3 more
openaire   +2 more sources

Instrumented impact and residual tensile strength testing of eight-ply carbon eopoxy specimens [PDF]

open access: yes
Instrumented drop weight impact testing was utilized to examine a puncture-type impact on thin carbon-epoxy coupons. Four different material systems with various eight-ply lay-up configurations were tested.
Nettles, A. T.
core   +1 more source

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