Results 41 to 50 of about 50,065 (190)

Population-based incremental learning with memory scheme for changing environments [PDF]

open access: yes, 2005
Copyright @ 2005 ACMIn recent years there has been a growing interest in studying evolutionary algorithms for dynamic optimization problems due to its importance in real world applications.
Yang, S
core   +1 more source

Simple Guanosine—Amino Acid Hybrids as Low Molecular Weight Hydrogelators

open access: yesChemistry – A European Journal, EarlyView.
Unexplored guanosine‐amino acid derivatives act as low molecular weight hydrogelators. Gelation is triggered by K+ ions and pH changes and relies on G‐quadruplex formation. Small changes in the amino acid structure have a strong impact on the mechanical properties of the gels.
Silvia Pieraccini   +6 more
wiley   +1 more source

Cytotoxic Activity of Essential Oils of Aerial Parts and Ripe Fruits of (Apiaceae)

open access: yesNatural Product Communications, 2013
The cytotoxic effects of the essential oils obtained from the flowering aerial parts (APO) and ripe fruits (RFO) of Echinophora spinosa L. (Apiaceae) from central Italy toward human U937 promonocytoid cells were studied; the contribution of each of the ...
Daniele Fraternale   +5 more
doaj   +1 more source

Hybrid Osprey‐Salp Swarm Optimization Algorithm for Single and Multiobjective Optimal Power Flow in Smart Grids With Renewable Energy Integration

open access: yesEnergy Science &Engineering, EarlyView.
The proposed hybrid osprey‐salp swarm optimization algorithm addresses optimal power flow (OPF) problems in smart grids incorporating solar, hydro, and thermal generators. The algorithm is validated on Institute of Electrical and Electronics Engineers 30‐, 57‐, and 118‐bus test systems across five single and multiobjective OPF scenarios.
Mujtaba Ali   +5 more
wiley   +1 more source

Sensorless high-speed BLDC machine using hardware-RFO [PDF]

open access: yesCOMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2011
Purpose The purpose is to present a sensorless control method by which high-resolution rotor position information is estimated and used for phase-advancing operation of a high-speed permanent magnet (PM) brushless DC (BLDC) motor. Design/methodology/approach
Shen, Jian-Xin   +3 more
openaire   +3 more sources

Robust Monotonic Optimization Framework for Multicell MISO Systems

open access: yes, 2012
The performance of multiuser systems is both difficult to measure fairly and to optimize. Most resource allocation problems are non-convex and NP-hard, even under simplifying assumptions such as perfect channel knowledge, homogeneous channel properties ...
Bengtsson, Mats   +3 more
core   +1 more source

A complex network approach to stylometry [PDF]

open access: yes, 2015
Statistical methods have been widely employed to study the fundamental properties of language. In recent years, methods from complex and dynamical systems proved useful to create several language models.
Amancio, Diego R.
core   +4 more sources

Dry–Hot Compound Events Driving the 2024 Pantanal Wildfires

open access: yesInternational Journal of Climatology, EarlyView.
Extreme wildfires in the Pantanal in 2024 were driven by a cascade of heatwaves, rainfall deficits and the absence of the annual flood pulse. These conditions dried soils and rivers, enhanced fuel accumulation and enabled early and intense fire outbreaks.
Liz B. C. Belém   +14 more
wiley   +1 more source

Rain-Fall Optimization Algorithm with new parallel implementations [PDF]

open access: yesEAI Endorsed Transactions on Energy Web, 2020
Rainfall Optimization Algorithm (RFO) is a nature-inspired metaheuristic optimization algorithm. RFOmimics the movement of water drops generated during rainfall to optimize a function.
Juan Guerrero-Valadez   +1 more
doaj   +1 more source

Raffinose family oligosaccharides (RFOs): role in seed vigor and longevity

open access: yesBioscience Reports, 2022
Abstract Seed vigor and longevity are important agronomic attributes, as they are essentially associated with crop yield and thus the global economy. Seed longevity is a measure of seed viability and the most essential property in gene bank management since it affects regeneration of seed recycling. Reduced seed life or storability is
Prafull Salvi   +2 more
openaire   +2 more sources

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