Results 1 to 10 of about 135,729 (217)

FSSM: Frequency-Enhanced State Space Modeling with FFT-Based Two-Sided Non-Causal Convolution for Image Dehazing [PDF]

Journal of Imaging
Image dehazing is a fundamental visual restoration task for improving visual perception under low-visibility weather conditions, especially in UAV-based remote sensing, traffic monitoring, and surveillance scenarios.
Li Zeng, Yinqing Huang
doaj   +2 more sources

Applicability of Time Domain Transform Methods for Frequency Dependent Dynamic Stiffness

Frontiers in Built Environment, 2022
Some types of dynamic stiffness, such as the dynamic ground stiffness used in soil-structure interaction analyses and the viscoelastic body used in vibration control systems, have strong frequency dependency.
Naohiro Nakamura, Kunihiko Nabeshima, Yoshihiro Mogi, Akira Ota   +3 more
doaj   +1 more source

Mechanostat parameters estimated from time-lapsed in vivo micro-computed tomography data of mechanically driven bone adaptation are logarithmically dependent on loading frequency

Frontiers in Bioengineering and Biotechnology, 2023
Mechanical loading is a key factor governing bone adaptation. Both preclinical and clinical studies have demonstrated its effects on bone tissue, which were also notably predicted in the mechanostat theory.
Francisco C. Marques, Daniele Boaretti, Matthias Walle, Ariane C. Scheuren, Friederike A. Schulte, Ralph Müller   +5 more
doaj   +1 more source

Change in prey genotype frequency rescues predator from extinction

Royal Society Open Science, 2022
Indirect evolutionary rescue (IER) is a mechanism where a non-evolving species is saved from extinction in an otherwise lethal environment by evolution in an interacting species.
Ruben Joseph Hermann, Lutz Becks
doaj   +1 more source

Tilting-Pad Journal Bearings—Frequency-Dependent Dynamic Coefficients and Pivot Flexibility Effects

Lubricants, 2022
Tribologists have generally accepted that the dynamic modeling of tilting-pad journal bearings (TPJB) must consider the frequency dependency of the dynamic properties.
Laurence F. Wagner, Paul E. Allaire
doaj   +1 more source

Dependency Structures in Cryptocurrency Market from High to Low Frequency

Entropy, 2022
We investigate logarithmic price returns cross-correlations at different time horizons for a set of 25 liquid cryptocurrencies traded on the FTX digital currency exchange. We study how the structure of the Minimum Spanning Tree (MST) and the Triangulated
Antonio Briola, Tomaso Aste
doaj   +1 more source

Mechano-Regulation of Trabecular Bone Adaptation Is Controlled by the Local in vivo Environment and Logarithmically Dependent on Loading Frequency

Frontiers in Bioengineering and Biotechnology, 2020
It is well-established that cyclic, but not static, mechanical loading has anabolic effects on bone. However, the function describing the relationship between the loading frequency and the amount of bone adaptation remains unclear.
Ariane C. Scheuren, Paul Vallaster, Gisela A. Kuhn, Graeme R. Paul, Angad Malhotra, Yoshitaka Kameo, Yoshitaka Kameo, Ralph Müller   +7 more
doaj   +1 more source

Design of a Wideband Balun Using IPD Technology for Compensating the Frequency Dependency [PDF]

Journal of Electromagnetic Engineering and Science, 2023
In this paper, we propose a wideband balun using integrated passive device (IPD) technology. The proposed circuit is designed to compensate for the magnitude deviations by differentiating the magnitude S-parameter and calculating the lumped component ...
Youna Jang, Kwanhun Jeong, Yea-ji Lee, Taehoon Kang, Sangmin Lee, Seo Koo, Dal Ahn   +6 more
doaj   +1 more source

Different Effects of the COVID-19 Pandemic on Exercise Indexes and Mood States Based on Sport Types, Exercise Dependency and Individual Characteristics

Children, 2021
Exercise indexes have been affected by the coronavirus disease 2019 (COVID-19) pandemic and its related restrictions among athletes. In the present study, we investigated the exercise frequency and intensity before and during the COVID-19 pandemic, and ...
Alireza Aghababa, Georgian Badicu, Zahra Fathirezaie, Hadi Rohani, Maghsoud Nabilpour, Seyed Hojjat Zamani Sani, Elham Khodadadeh   +6 more
doaj   +1 more source

Exploring the use of syntactic dependency features for document-level sentiment classification [PDF]

Bulletin of the Polish Academy of Sciences: Technical Sciences, 2019
An automatic analysis of product reviews requires deep understanding of the natural language text by machine. The limitation of bag-of-words (BoW) model is that a large amount of word relation information from the original sentence is lost and the word ...
K.S. Kalaivani, S. Kuppuswami
doaj   +1 more source