Results 41 to 50 of about 746,055 (241)

SOS-Hankel Tensors: Theory and Application [PDF]

open access: yes, 2014
Hankel tensors arise from signal processing and some other applications. SOS (sum-of-squares) tensors are positive semi-definite symmetric tensors, but not vice versa.
Li, Guoyin, Qi, Liqun, Xu, Yi
core   +1 more source

The Synergism of β‐Cyclodextrin and Fe3+ Enabled Anti‐Swelling Ion‐Conductive Hydrogels for Multimodal Underwater Sensing Aided by Machine Learning Algorithms

open access: yesAdvanced Science, EarlyView.
An anti‐swelling ion‐conductive hydrogel is developed via β‐cyclodextrin and Fe3+ synergism, enabling reliable underwater motion sensing and Morse code communication. Integrated with machine learning, the system achieves 98.6% accuracy in real‐time underwater handwriting recognition for rapid information transmission.
Hao Dong   +13 more
wiley   +1 more source

Anxiety, depression and access to mental health services among internally displaced persons in Mogadishu, Somalia: a cross-sectional survey

open access: yesBMJ Open
Objective The study aims to evaluate anxiety and depression levels and access to mental health services among internally displaced persons (IDPs) in Mogadishu, Somalia.Design A community-based, cross-sectional survey was carried out in IDP camps. Face-to-
Hassan Abdullahi Dahie   +7 more
doaj   +1 more source

Multiparametric MRI with MR elastography findings in patients with sinusoidal obstruction syndrome after oxaliplatin-based chemotherapy

open access: yesInsights into Imaging, 2022
Objective To evaluate the magnetic resonance elastography (MRE)-derived liver stiffness measurement (LSM), T1 and T2 relaxation times, and hepatobiliary phase images in patients, who developed sinusoidal obstruction syndrome (SOS) after oxaliplatin-based
Ahmet Poker   +7 more
doaj   +1 more source

On Difference-of-SOS and Difference-of-Convex-SOS Decompositions for Polynomials

open access: yes, 2020
In this paper, we are interested in developing polynomial decomposition techniques to reformulate real valued multivariate polynomials into difference-of-sums-of-squares (namely, D-SOS) and difference-of-convex-sums-of-squares (namely, DC-SOS).
Niu, Yi-Shuai
core  

Quantum chaos with non-periodic, complex orbits in the Resonant Tunneling Diode

open access: yes, 1998
We show that a special type of orbits, which are non-periodic and complex, 'Saddle Orbits' (SOs) describe accurately the quantal and experimental current oscillations in the Resonant Tunneling Diode in tilted fields.
Monteiro, T. S., Saraga, D. S.
core   +1 more source

In Situ Formation of an In–Zn Interface Layer Enables Aqueous Zinc‐Ions Batteries with High Capacity Retention

open access: yesAdvanced Science, EarlyView.
This work demonstrates an indium zinc oxide (IZO)‐modified separator applied to aqueous zinc ion batteries (AZIBs), which in situ generates an In–Zn interface layer to stabilize the separator/anode region during the cycling process. The In–Zn interface layer provides richer nucleation sites for Zn2+ and suppresses side reactions.
Youwei Jiang   +10 more
wiley   +1 more source

AASLD practice guidance on drug, herbal, and dietary supplement–induced liver injury

open access: yes, 2022
Hepatology, EarlyView.
Robert J. Fontana   +6 more
wiley   +1 more source

Institutional and home delivery practices and their predictors among women in Benadir region, Somalia: a community-based cross-sectional study

open access: yesGynecology and Obstetrics Clinical Medicine
Background Somalia has one of the highest maternal mortality rates globally, driven by decades of conflict, fragile health systems and limited access to skilled birth attendance.
Hassan Abdullahi Dahie   +14 more
doaj   +1 more source

Effect of Snow Cover on Detecting Spring Phenology from Satellite-Derived Vegetation Indices in Alpine Grasslands

open access: yesRemote Sensing, 2022
The accurate estimation of phenological metrics from satellite data, especially the start of season (SOS), is of great significance to enhance our understanding of trends in vegetation phenology under climate change at regional or global scales. However,
Yiting Wang   +6 more
doaj   +1 more source

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