Results 21 to 30 of about 2,923 (194)

The M101 group complex: new dwarf galaxy candidates and spatial structure [PDF]

open access: yes, 2017
The fine details of the large-scale structure in the local universe provide important empirical benchmarks for testing cosmological models of structure formation. Dwarf galaxies are key object for such studies.
Binggeli, Bruno   +3 more
core   +2 more sources

Integrated Procurement-Production Inventory Model with Two-Stage Production

open access: yesJurnal Teknik Industri, 2020
The inventory-production system concerns the effective management of the goods flows from raw materials to finished products. The Integrated Procurement-Production (IPP) system consists of many elements that must be managed effectively.
Dana Marsetiya Utama   +2 more
doaj   +1 more source

Ultra-short-term PV power forecasting based on a support vector machine with improved dragonfly algorithm [PDF]

open access: yes, 2021
Photo-voltaic (PV) is one of the most abundant sources on the earth for the generation of electricity. Although, due to the stochastic nature of PV characteristics to sustain constant power, an accurate PV power prediction is needed for a grid-connected ...
Jewaliddin, S. K.   +5 more
core   +1 more source

Hybridization of Chaotic Grey Wolf Optimizer and Dragonfly Algorithm for Short-Term Hydrothermal Scheduling

open access: yesIEEE Access, 2020
The short-term hydrothermal scheduling (STHS) is a complicated optimization problem, considering valve-point effect (VPE) and transmission losses, it exhibits the characteristics of nonlinearities and non-smoothness which increase the difficulty of ...
Gonggui Chen   +3 more
doaj   +1 more source

A Two-Phase Pattern Generation and Production Planning Procedure for the Stochastic Skiving Process

open access: yesApplied Computational Intelligence and Soft Computing, 2023
The stochastic skiving stock problem (SSP), a relatively new combinatorial optimization problem, is considered in this paper. The conventional SSP seeks to determine the optimum structure that skives small pieces of different sizes side by side to form ...
Tolga Kudret Karaca   +2 more
doaj   +1 more source

Dragonfly Algorithm-Based Optimization for Selective Harmonics Elimination in Cascaded H-Bridge Multilevel Inverters with Statistical Comparison

open access: yesEnergies, 2022
Harmonics worsen the quality of electrical signals, hence, there is a need to eliminate them. The test objects under discussion are single-phase versions of cascaded H-bridge (CHB) multilevel inverters (MLIs) whose switching angles are optimized to ...
Muhammad Ayyaz Tariq   +7 more
doaj   +1 more source

IBDA: Improved Binary Dragonfly Algorithm With Evolutionary Population Dynamics and Adaptive Crossover for Feature Selection

open access: yesIEEE Access, 2020
Feature selection is an effective method to eliminate irrelevant, redundant and noisy features, which improves the performance of classification and reduces the computational burden in machine learning.
Jiahui Li   +6 more
doaj   +1 more source

A probabilistic model of cross-categorization [PDF]

open access: yes, 2011
Most natural domains can be represented in multiple ways: we can categorize foods in terms of their nutritional content or social role, animals in terms of their taxonomic groupings or their ecological niches, and musical instruments in terms of their ...
Kemp, Charles   +3 more
core   +1 more source

Security Enhancement in Power System Using FACTS Devices and Atom Search Optimization Algorithm [PDF]

open access: yesEAI Endorsed Transactions on Energy Web, 2021
In power systems, control, system operations are an important and difficult task by enhancing the power systems' security. An enhancement of the security system is done by the optimal location selection of the Flexible Alternating ...
A Amarendra, L Srinivas, R Rao
doaj   +1 more source

Correction Method of Three-Axis Magnetic Sensor Based on DA–LM

open access: yesMetals, 2022
The fluxgate magnetometer has the advantages of having a small volume and low power consumption and being light weight and is commonly used to detect weak magnetic targets, including ferrous metals, unexploded bombs (UXOs), and underground corrosion ...
Li Yang   +7 more
doaj   +1 more source

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