Results 141 to 150 of about 20,562 (272)

The Keystone‐Pathogen Hypothesis Updated: The Role of Porphyromonas gingivalis in Periodontitis

open access: yesJournal of Periodontal Research, EarlyView.
Porphyromonas gingivalis orchestrates a coordinated manipulation of immune and inflammatory responses in periodontal tissues which leads to the generation of a dysbiotic, subgingival biofilm community, and progression of periodontitis. The type 9 secretion system, lipid A modification, and the formation of outer membrane vesicles are important ...
Mike A. Curtis   +2 more
wiley   +1 more source

Process Planning for Large Container Ship Propeller Shaft Machining Based on an Improved Ant Colony Algorithm

open access: yesJournal of Marine Science and Engineering
To accommodate the production and manufacture of complex and customized marine components and to avoid the empirical nature of process planning, machining operations can be automatically sequenced and optimized using ant colony algorithms.
Guotai Du, Hongkui Ma, Yu Bai, Ning Mei
doaj   +1 more source

Automatic Programming with Ant Colony Optimization [PDF]

open access: yes, 2004
Automatic programming is the use of search techniques to find programs that solve a problem. The most commonly explored automatic programming technique is genetic programming, which uses genetic algorithms to carry out the search.
Green, Jennifer   +2 more
core  

Natural Variation in GmSL20 Improves Seed Size and Quality in Soybean

open access: yesPlant Biotechnology Journal, EarlyView.
ABSTRACT Seed size plays an important role in determining crop yield, yet the genetic mechanisms underlying the regulation of this agronomic trait remain incompletely understood in soybean. Here, we perform a genome‐wide association study mapping with seed length variations and identify a major quantitative trait locus (QTL) on chromosome 20, named ...
Yuechuan Luo   +12 more
wiley   +1 more source

Automatic MGA trajectory planning with a modified ant colony optimization algorithm

open access: yes, 2009
This paper assesses the problem of designing multiple gravity assist (MGA) trajectories, including the sequence of planetary encounters. The problem is treated as planning and scheduling of events, such that the original mixed combinatorial-continuous ...
Vasile, M., Ceriotti, M.
core  

A genetic algorithm simheuristic for solving the stochastic project portfolio selection problem with portfolio reliability constraints

open access: yesInternational Transactions in Operational Research, Volume 33, Issue 6, Page 4039-4071, November 2026.
Abstract In response to the increasing complexity of modern products, dynamic markets, and intensified competition, project‐based organizations are actively seeking methodologies to efficiently manage their expanding project portfolios. This paper analyzes the project portfolio selection problem in uncertain environments. Despite recent advances in the
Miguel Saiz   +3 more
wiley   +1 more source

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