Results 171 to 180 of about 1,575,390 (372)

Spring and Power in Hovering Ornithopters

open access: yesAdvanced Intelligent Systems, EarlyView.
Only small ornithopters can hover, longest at the hummingbird size. This article reviews the drive and power of these hovering machines, focusing on elastic energy and thrust boosters. Unlike two‐winged designs, X‐winged and multiple‐V‐winged ornithopters benefit from lower disk loading and slower, smaller wingbeats, and the clap‐and‐fling effect ...
Gih‐Keong Lau   +4 more
wiley   +1 more source

New Reflections on Gravitational Duality

open access: yesFrontiers in Physics, 2018
In general terms duality consists of two descriptions of one physical system by using degrees of freedom of different nature. There are different kinds of dualities and they have been extremely useful to uncover the underlying strong coupling dynamics of
Hugo García-Compeán   +2 more
doaj   +1 more source

Advances in 3D and 4D Printing of Soft Robotics and Their Applications

open access: yesAdvanced Intelligent Systems, EarlyView.
This article summarizes the development of 3D‐printed soft robotics in the recent decade. The article discusses the printing capabilities of different additive manufacturing technologies in terms of soft polymers, multimaterial printability, soft robotic printing, and 4D printing.
Hao Liu   +5 more
wiley   +1 more source

Baryon modes in string breaking from gauge/string duality

open access: yesPhysics Letters B, 2020
We consider the string breaking phenomenon within effective string models which purport to mimic QCD with two light flavors, with a special attention to baryon modes.
Oleg Andreev
doaj  

Cusp anomalous dimension and rotating open strings in AdS/CFT

open access: yesJournal of High Energy Physics, 2018
In the context of AdS/CFT we provide analytical support for the proposed duality between a Wilson loop with a cusp, the cusp anomalous dimension, and the meson model constructed from a rotating open string with high angular momentum.
R. Espíndola, J. Antonio García
doaj   +1 more source

Fairness in Federated Learning: Trends, Challenges, and Opportunities

open access: yesAdvanced Intelligent Systems, EarlyView.
This survey delves into the intricate issues pertinent to fairness in federated learning , where various biasing factors can skew model performance. By systematically analyzing fairness‐aware strategies, evaluation metrics, and future directions, this work identifies pivotal research gaps in existing approaches and sheds light on both challenges and ...
Noorain Mukhtiar   +2 more
wiley   +1 more source

String/Flux Tube Duality [PDF]

open access: yesAIP Conference Proceedings, 2007
I describe Field/String duality as applied to the response of gauge fields to separated quark and antiquark sources. This is a talk contributed to the conference Quark Confinement and the Hadron Spectrum VII, Ponta Delgada, Azores, 2-7 September 2006.
openaire   +4 more sources

Applying the NIOSH Worker Well‐Being Framework to Migrant and Seasonal Farmworkers: Insights From the Literature

open access: yesAmerican Journal of Industrial Medicine, EarlyView.
ABSTRACT Background There is a growing appreciation of the importance of health and well‐being and of the complex set of factors, within and outside the workplace, that interact to affect the well‐being of workers. Migrant and seasonal farmworkers experience particular challenges, and measurement of factors that influence their health and well‐being is
Tessa Bonney   +3 more
wiley   +1 more source

Introduction to String Theory [PDF]

open access: yesarXiv, 2008
The aim of these notes is to give recent developments in string theory. In particular, we discuss the string spectrums, compactifications, brane physics and dualities.
arxiv  

Advanced Contactless Bioassembly Approaches: Leveraging Sound, Optical, and Magnetic Fields

open access: yesAdvanced NanoBiomed Research, EarlyView.
This review explores innovative contactless bioassembly techniques driven by sound, light, and magnetic fields, which enable the precise organization of cells, biomaterials, and bioactive substances into complex 3D structures. These technologies, crucial for in vitro modeling and regenerative medicine, are examined in detail, highlighting their ...
Micaela Natta   +4 more
wiley   +1 more source

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