Results 31 to 40 of about 10,339,739 (265)

Using biased-randomized algorithms for the multi-period product display problem with dynamic attractiveness

open access: yes, 2020
From brick-and-mortar stores to omnichannel retail, the efficient selection of products to be displayed on store tables, advertising brochures, or online front pages has become a critical issue.
Carmo Martins, Leandro do   +4 more
core   +1 more source

Online Algorithms for Multi-Level Aggregation [PDF]

open access: yes, 2016
In the Multi-Level Aggregation Problem (MLAP), requests arrive at the nodes of an edge-weighted tree T, and have to be served eventually. A service is defined as a subtree X of T that contains its root. This subtree X serves all requests that are pending
Kim Thang, Nguyen   +9 more
core   +1 more source

Optimal Algorithms for Online b-Matching with Variable Vertex Capacities [PDF]

open access: yes, 2021
We study the b-matching problem, which generalizes classical online matching introduced by Karp, Vazirani and Vazirani (STOC 1990). Consider a bipartite graph G = (S ̇∪ R,E).
Albers, Susanne, Schubert, Sebastian
core   +1 more source

Online Learning Approaches in Maximizing Weighted Throughput in an Unreliable Channel

open access: yesTsinghua Science and Technology, 2012
We design online algorithms to schedule unit-length packets with values and deadlines through an unreliable communication channel. In this model, time is discrete. Packets arrive over time; each packet has a non-negative value and an integer deadline. In
Zhi Zhang, Fei Li
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

Minimizing Query Frequency to Bound Congestion Potential for Moving Entities at a Fixed Target Time

open access: yesAlgorithms
Consider a collection of entities moving continuously with bounded speed, but otherwise unpredictably, in some low-dimensional space. Two such entities encroach upon one another at a fixed time if their separation is less than some specified threshold ...
William Evans, David Kirkpatrick
doaj   +1 more source

Extracellular matrix remodeling and immune reprogramming drive residual tumor progression of liver cancer after incomplete microwave ablation

open access: yesMolecular Oncology, EarlyView.
Incomplete microwave ablation (iMWA) of liver cancer triggers a biphasic progression in residual tumors. At Day 3, the microenvironment is characterized by acute inflammatory responses and extracellular matrix (ECM) remodeling. By Day 14, a profound shift occurs toward oncogenic signal transduction and immunosuppression, marked by macrophage ...
Yu Liu   +9 more
wiley   +1 more source

Online Algorithmic Study of Facility Location Problems: A Survey

open access: yesIEEE Access
Facility Location problems are one of the most prominent optimization problems in computer science, operations research, and combinatorial optimization. Their simple yet intrinsic structure has led to their widespread application in diverse fields, such ...
Christine Markarian
doaj   +1 more source

Weight-Based K-Truss Community Search via Edge Attachment

open access: yesIEEE Access, 2020
Community search is the task of discovering dense subgraph that satisfy a set of given query parameters. Most community search algorithms consider link structure while ignoring link weight.
Wafaa M. A. Habib   +2 more
doaj   +1 more source

Control of Hybrid Electric Vehicle Powertrain Using Offline-Online Hybrid Reinforcement Learning

open access: yesEnergies, 2023
Hybrid electric vehicles can achieve better fuel economy than conventional vehicles by utilizing multiple power sources. While these power sources have been controlled by rule-based or optimization-based control algorithms, recent studies have shown that
Zhengyu Yao, Hwan-Sik Yoon, Yang-Ki Hong
doaj   +1 more source

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