Results 111 to 120 of about 6,356,541 (351)
The problem with integer programming [PDF]
IMA Journal of Management Mathematics, 2010 Integer programming (IP), also known as discrete optimization, is a way of modelling a very wide range of problems involving indivisibilities (e.g. yes/no investment decisions) and non-convexities (e.g. economies of scale and fixed cost allocation). Such problems arise in many areas; these are mentioned in the paper.
openaire +2 more sources
Advanced Theory and Simulations, EarlyView.Computational fluid dynamics analyses assess the upstream locomotion performance of anisotropic microrollers with varying height‐to‐width ratios. Observing their successful upstream locomotion in veins, their performance in hepatic circulation is investigated for treating primary liver cancer.
Burak Arslan +8 more
wiley +1 more source
Automatic instantiation of a Variable Neighborhood Descent from a Mixed Integer Programming model
Operations Research Perspectives, 2017 In this paper we describe the automatic instantiation of a Variable Neighborhood Descent procedure from a Mixed Integer Programming model. We extend a recent approach in which a single neighborhood structure is automatically designed from a Mixed Integer
Tommaso Adamo +3 more
doaj
Exact solution approaches for the workload smoothing in assembly lines
Engineering Science and Technology, an International Journal, 2021 In this paper, the problem of minimizing the smoothness index for an assembly line given a fixed cycle time and the number of workstations is studied. This problem which is known as the workload smoothing line balancing problem (WSLBP) is a mixed-integer
Derya Dinler, Mustafa Kemal Tural
doaj
Generation of High‐Brilliance Polarized γ‐Rays Via Vacuum Dichroism‐Assisted Vacuum Birefringence
Advanced Science, EarlyView.A novel method is proposed for generating such γ‐photon beams via the vacuum‐dichroism‐assisted quantum vacuum birefringence effect, only utilizing well‐established unpolarized electron beams and solving the critical problem of demanding polarized ones.
Chong Lv +6 more
wiley +1 more source
A Survey on Mixed-Integer Programming Techniques in Bilevel Optimization
EURO Journal on Computational Optimization, 2021 Thomas Kleinert +3 more
semanticscholar +1 more source
Advanced Science, EarlyView.Transition metal oxides combining strong spin‐orbit coupling, near‐room‐temperature ferromagnetism, and high conductivity are rare. A Ca0.5Sr0.5RuO3 interfacial phase between LaMnO3 layers has all these features, high Tc, enhanced magnetization, and reduced coercivity.
Mengqin Wang +10 more
wiley +1 more source
A Near‐Field Coupling Array Enables Parallel Imaging and SNR Gain in MRI
Advanced Science, EarlyView.This paper proposes a metasurface‐based radiofrequency (RF) coil architecture, providing a universal theoretical framework for the application of decoupled metasurface arrays in magnetic resonance imaging, with potential to address wireless connectivity issues in magnetic resonance imaging RF coils.
Zhiguang Mo +11 more
wiley +1 more source
An Algorithmic Theory of Integer Programming
, 2019 We study the general integer programming problem where the number of variables $n$ is a variable part of the input. We consider two natural parameters of the constraint matrix $A$: its numeric measure $a$ and its sparsity measure $d$.
Eisenbrand, Friedrich +5 more
core
Multi‐Omics and ‐Organ Insights into Energy Metabolic Adaptations in Early Sepsis Onset
Advanced Science, EarlyView.This study shows that patients at risk of sepsis have a distinct metabolite and lipid signature, including serine and aminoadipic acid, in their serum before clinical diagnosis. A mouse model of sepsis with a compatible serum signature reveals underlying metabolic changes, including mitochondrial adaptation, altered serine‐dependent purine metabolism ...
Lin‐Lin Xu +9 more
wiley +1 more source