Results 31 to 40 of about 6,691,628 (330)

Constraint Satisfaction Problems over Finite Structures [PDF]

open access: yes2021 36th Annual ACM/IEEE Symposium on Logic in Computer Science (LICS), 2021
We initiate a systematic study of the computational complexity of the Constraint Satisfaction Problem (CSP) over finite structures that may contain both relations and operations. We show the close connection between this problem and a natural algebraic question: which finite algebras admit only polynomially many homomorphisms into them?
Barto, Libor   +2 more
openaire   +2 more sources

SPARC: Structural properties associated with residue constraints

open access: yesComputational and Structural Biotechnology Journal, 2022
SPARC facilitates the generation of plausible hypotheses regarding underlying biochemical mechanisms by structurally characterizing protein sequence constraints.
Andrew F. Neuwald   +2 more
doaj   +1 more source

Modular networks emerge from multiconstraint optimization [PDF]

open access: yes, 2007
Modular structure is ubiquitous among complex networks. We note that most such systems are subject to multiple structural and functional constraints, e.g., minimizing the average path length and the total number of links, while maximizing robustness ...
B. Bollobas   +7 more
core   +2 more sources

Optimization of turbine design in wind farms with multiple hub heights, using exact analytic gradients and structural constraints

open access: yesWind Energy, 2019
Wind farms are generally designed with turbines of all the same hub height. If wind farms were designed with turbines of different hub heights, wake interference between turbines could be reduced, lowering the cost of energy (COE). This paper demonstrates
A. Stanley, A. Ning, K. Dykes
semanticscholar   +1 more source

A general interactive framework for false discovery rate control under structural constraints [PDF]

open access: yes, 2017
We propose a general framework based on selectively traversed accumulation rules (STAR) for interactive multiple testing with generic structural constraints on the rejection set.
Lihua Lei   +2 more
semanticscholar   +1 more source

APPLICATION OF GRADIENT PROJECTION METHOD TO PARAMETRIC OPTIMIZATION OF STEEL LATTICE PORTAL FRAME

open access: yesInternational Journal for Computational Civil and Structural Engineering, 2021
The paper has proposed a mathematical model for parametric optimization problem of the steel lattice portal frame. The design variable vector includes geometrical parameters of the structure (node coordinates), as well as cross-sectional dimensions of ...
Vitalina Yurchenko   +2 more
doaj   +1 more source

Integration of Structural Constraints into TSP Models

open access: yesInternational Conference on Principles and Practice of Constraint Programming, 2019
Several models based on constraint programming have been proposed to solve the traveling salesman problem (TSP). The most efficient ones, such as the weighted circuit constraint (WCC), mainly rely on the Lagrangian relaxation of the TSP, based on the ...
Nicolas Isoart, Jean-Charles Régin
semanticscholar   +1 more source

In defense of peace journalism: A rejoinder [PDF]

open access: yesConflict & Communication Online, 2007
The following is a contribution to the ongoing debate about the merits and demerits of peace journalism. The writer, a proponent of the new philosophy, answers Loyn's and Hanitzsch's attacks by claiming that peace journalism has enough of novel insights ...
Samuel Peleg
doaj  

Structural Topology Optimization with Local Finite-Life Fatigue Constraints

open access: yesMathematics, 2023
To improve the fatigue resistance of engineering structures, topology optimization has always been an effective design strategy. The direct calculation of large-scale local fatigue constraints remains a challenge due to high computational cost.
Xiaoyan Teng   +3 more
doaj   +1 more source

The Impact of Additive Manufacturing Constraints and Design Objectives on Structural Topology Optimization

open access: yesApplied Sciences, 2023
To analyze the impact of different objective functions and additive manufacturing (AM) constraints on structural topology optimization, it is necessary to perform an in-depth comparative study.
Babin Dangal, Sangjin Jung
doaj   +1 more source

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