Results 121 to 130 of about 39,754 (281)

Research on Nonuniform Ageing State Assessment of Oil‐Immersed Power Transformers Based on PCA–GWO–RF Algorithm

High Voltage, EarlyView.
ABSTRACT The condition assessment of oil–paper insulation is critical for oil–immersed power transformers, which are fundamental to the reliability of modern power systems. The primary limitation of traditional transformer ageing assessment lies in its macroscopic, whole‐unit approach, which fails to account for the localised effects of nonuniform ...
Mingze Zhang, Muhe Yu, Wei Sun, Ji Liu, Song Cheng, Bingjie Wang, Di Shao, Minghe Chi   +7 more
wiley   +1 more source

A Grey Wolf Optimizer for Text Document Clustering

Journal of Intelligent Systems, 2018
Abstract Text clustering problem (TCP) is a leading process in many key areas such as information retrieval, text mining, and natural language processing. This presents the need for a potent document clustering algorithm that can be used effectively to navigate, summarize, and arrange information to congregate large data sets.
Hasan Rashaideh, Ahmad Sawaie, Mohammed Azmi Al-Betar, Laith Mohammad Abualigah, Mohammed M. Al-Laham, Ra'ed M. Al-Khatib, Malik Braik   +6 more
openaire   +2 more sources

A new fusion of grey wolf optimizer algorithm with a two-phase mutation for feature selection

, 2020
Because of their high dimensionality, dealing with large datasets can hinder the data mining process. Thus, the feature selection is a pre-process mandatory phase for reducing the dimensionality of datasets through using the most informative features and
de Albuquerque, Victor Hugo C., Mirjalili, S, Abdel-Basset, M, El-Shahat, Doaa, El-henawy, Ibrahim, El-Shahat, D, de Albuquerque, VHC, El-henawy, I, Mirjalili, Seyedali, Abdel-Basset, Mohamed   +9 more
core   +1 more source

A Novel Power Curve Modeling Framework for Wind Turbines

Advances in Electrical and Computer Engineering, 2019
This paper presents two main novelties concerning power curve modeling of wind turbines. First novelty lies in the hybridization of 5 widely-used parametric functions and 8 recently-developed metaheuristic optimization algorithms.
YESILBUDAK, M.
doaj   +1 more source

Apex predators exploit advantageous snow conditions across hunting modes

Journal of Animal Ecology, EarlyView.
Advantageous snow conditions—in terms of snow depth and density—are among the most important features of the winter landscape for two apex predators, regardless of hunting strategy. In a warming climate, the knock‐on effects of a diminishing snowpack may reduce the hunting success of multiple large carnivore species.
Benjamin K. Sullender, Taylor R. Ganz, Ross Mower, Jessica D. Lundquist, Brian N. Kertson, Thomas M. Newsome, Aaron J. Wirsing, Laura R. Prugh   +7 more
wiley   +1 more source

Human hunters are no substitute for vanishing apex predators

Journal of Animal Ecology, EarlyView.
Our study reveals that human hunters fail to replicate the collective and individual ecological functions of natural apex predators in sustaining biodiversity and promoting stable spatial patterns. These insights are vital for rethinking predator conservation and wildlife management in human‐dominated landscapes.
Ying Geng, Christos Mammides, Ru‐Chuan He, Lin Wang, Kang Luo, Zhong‐Yuan Zhang, Bo Wang, Rui‐Chang Quan   +7 more
wiley   +1 more source

Cardiovascular Plasticity and Adaptation of High‐Altitude Birds and Mammals

Integrative Zoology, EarlyView.
This schematic depicts the cardiovascular adaptations of mammals and birds to high‐altitude hypoxia. It highlights key phenotypic changes in oxygen transport and cardiac responses, driven by molecular mechanisms including transcriptional regulation and genetic modifications.
Huishang She, Yanhua Qu
wiley   +1 more source

Cenozoic Tectonics Ignite Mitochondrial Codon Innovations Propelling Canid Body Size Evolution and Transcontinental Radiations

Integrative Zoology, EarlyView.
We decode mitochondrial genomes across all extant canids, revealing lineage‐specific codon optimization driven by altitude, predation, and body size. A tripartite framework integrates geological events, metabolic constraints, and adaptive radiation to explain carnivore evolution.
Xiaoyang Wu, Xibao Wang, Yongquan Shang, Yao Chen, Haotian Cai, Tian Xia, Qinguo Wei, Weilai Sha, Honghai Zhang   +8 more
wiley   +1 more source

Algoritma Hibrid Particle Swarm Optimization Grey Wolf Optimizer

, 2020
Particle Swarm Optimization (PSO) adalah teknik optimasi yang dikembangkan pada tahun 1995 oleh Russel Eberhart dan James Kennedy. PSO terinspirasi dari perilaku sosiologis kelompok burung yang terbang bersama-sama tanpa terjadinya tabrakan antara ...
Putra, Mochamad Rico Pratama
core  

Effect of Social Rank on Gut Microbes and Their Metabolites of Greater Long‐Tailed Hamsters (Tscherskia triton)

Integrative Zoology, EarlyView.
Social rank in greater long‐tailed hamsters (Tscherskia triton) shapes gut microbiota composition and metabolite profiles. Dominant males exhibit a “high‐vigilance, metabolically activated” phenotype, with elevated aggression and specific gut microbiota enriched in energy‐harvesting taxa and fecal queuine.
Da Zhang, Xiaoming Xu, Zhibin Zhang
wiley   +1 more source