Results 11 to 20 of about 4,199,573 (346)

On the Complexity of Constant Propagation [PDF]

open access: yes, 2001
Constant propagation (CP) is one of the most widely used optimizations in practice (cf. [9]). Intuitively, it addresses the problem of statically detecting whether an expression always evaluates to a unique constant at run-time. Unfortunately, as proved by different authors [4, 16], CP is in general undecidable even if the interpretation of branches is
Markus Müller-Olm, Oliver Rüthing
openaire   +2 more sources

Constant Propagation on Predicated Code

open access: yesJ. Univers. Comput. Sci., 2003
JUCS - Journal of Universal Computer Science Volume Nr.
Knoop,Jens, Rüthing,Oliver
openaire   +4 more sources

Strategies for Source-to-Source Constant Propagation

open access: yesElectronic Notes in Theoretical Computer Science, 2002
AbstractData-flow optimizations are usually implemented on low-level intermediate representations. This is not appropriate for source-to-source optimizations, which reconstruct a source level program after transformation. In this paper we show how constant propagation, a well known data-flow optimization problem, can be implemented on abstract syntax ...
Karina Olmos, Eelco Visser
openaire   +4 more sources

Quantum Constant Propagation

open access: yes, 2023
AbstractA quantum circuit is often executed on the initial state where each qubit is in the zero state. Therefore, we propose to perform a symbolic execution of the circuit. Our approach simulates groups of entangled qubits exactly up to a given complexity.
Yanbin Chen, Yannick Stade
openaire   +1 more source

Constant propagation with conditional branches [PDF]

open access: yesACM Transactions on Programming Languages and Systems, 1985
Constant propagation is a well-known global flow analysis problem. The goal of constant propagation is to discover values that are constant on all possible executions of a program and to propagate these constant values as far foward through the program as possible.
Mark N. Wegman, F. Kenneth Zadeck
openaire   +1 more source

Search of mode wavelengths in planar waveguides by using Fourier transform of wave equation

open access: yesSemiconductor Physics, Quantum Electronics & Optoelectronics, 2016
The article describes a numerical method based on Fourier transform for studying propagating optical waves in dielectric planar waveguides. The inverse problem to the known direct one in waveguide investigation is proposed, namely a search of light ...
V.M. Fitio
doaj   +1 more source

Analysis of Sound Absorbing Properties of Activated Carbon Fiber Felts Based on Density Change

open access: yesNantong Daxue xuebao. Ziran kexue ban, 2021
In order to study the sound absorbing properties of activated carbon fiber felts, three kinds of activated carbon fiber felts with different densities were selected, and the double channel acoustic analyzer with impedance tube was used to test the ...
SHEN Yue, YAN Xuefeng, LIU Qixia
doaj   +1 more source

Buoyancy-driven crack propagation: the limit of large fracture toughness [PDF]

open access: yes, 2007
We study steady vertical propagation of a crack filled with buoyant viscous fluid through an elastic solid with large effective fracture toughness. For a crack fed by a constant flux Q, a non-dimensional fracture toughness K=Kc/(3μQm3/2)1/4 describes the
Roper, S.M.   +3 more
core   +1 more source

Parabolic Multimode Fiber under Bending: Analytical Calculation of the Second-order Corrections to the Propagation Constants

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2021
The aim of the work is to study bent multimode fiber with parabolic refractive index profile. For that, second-order corrections to propagation constants of longitudinally perturbed arbitrary dielectric waveguide’s modes were found using perturbation ...
Markvart Aleksandr   +2 more
doaj   +1 more source

Lifetime evaluation of concrete structures under sustained post-peak loading [PDF]

open access: yes, 2005
Experimental tests on crack propagation in concrete under constant post-peak loading are simulated using the finite element method and the cohesive crack model, in both Mode I and Mixed-mode conditions.
Silvio Valente   +3 more
core   +1 more source

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