Results 1 to 10 of about 48,163 (76)

New Criterions-Based $\mathcal{H}$-Tensors for Testing the Positive Definiteness of Multivariate Homogeneous Forms

Mathematics, 2022
Positive definite homogeneous multivariate forms play an important role in polynomial problems and medical imaging, and the definiteness of forms can be tested using structured tensors.
Dongjian Bai, Feng Wang
doaj   +1 more source

Asymmetric System Model Parameters Identification Framework via Relay Feedback

IEEE Access, 2023
This paper proposes an innovative framework of a parameter estimation procedure based on the well-established relay-feedback experiment paradigm. The novelty consists in consideration of asymmetric dynamics and non-equal static gains of the identified ...
Libor Pekar, Radek Matusu, Mengjie Song, Lenka Kuklisova Pavelkova, Qingbin Gao   +4 more
doaj   +1 more source

An ℋ-tensor-based criteria for testing the positive definiteness of multivariate homogeneous forms

Open Mathematics, 2022
A positive definite homogeneous multivariate form plays an important role in the field of optimization, and positive definiteness of the form can be identified by a special structured tensor.
Bai Dongjian, Wang Feng
doaj   +1 more source

Effects of Additives Adsorbed to Wet Clutch Disks on Their Tribological Performance Found in a Comparative Investigation

Lubricants
Tribolayer build-up was investigated on wet clutch steel disks with experiments in three different test levels of the tribological verification chain via X-ray photoelectron spectroscopy. A new characteristic value of the tribolayers was developed, i.e.,
Charlotte Besser, Christian Tomastik, Astrid Lebel, Mirjam Bäse, Johannes Wirkner, Patrick Strobl, Katharina Voelkel, Karsten Stahl   +7 more
doaj   +1 more source

Analysis of particle settlement characteristics and force chain evolution of rice seeds in silo based on discrete element method

Shipin yu jixie
ObjectiveTo reveal the movement law and force chain characteristic evolution mechanism of stored rice seed particles during the settlement process in a silo.MethodsWith the Xinliangyou 98 hybrid rice seeds as the research object, a "rice seed-silo ...
WANG Minna, CHEN Lintao, MA Xu, MOU Xiangwei, ZHONG Wenjun, JIANG Huanyu   +5 more
doaj   +1 more source

Toxic metal contamination in vegetables: A case study from Roopnagar district with comprehensive elemental analysis using WD-XRF and implications for human health

Journal of Trace Elements and Minerals
Background: The accumulation of toxic metals (TMs) in vegetables presents a growing threat to food safety and public health, particularly in regions undergoing rapid urbanization and industrial activity, such as Roopnagar district in Punjab, India ...
Mamta Arora, Harshita Saini, Ramandeep Kaur, Rimpi   +3 more
doaj   +1 more source

Zero electromagnetic coupling of closely spaced identical helical resonators. [PDF]

Sci Rep
Gudge-Brooke J, Clow N, Hibbins AP, Powell AW, Sambles JR.   +4 more
europepmc   +1 more source

A Method for Continuous Dual-Offline Payment of Cryptocurrency Based on Asset Credentials. [PDF]

Sensors (Basel)
Si H, Huang Y, Li G, Qi Y, Chen W, Gao Z.   +5 more
europepmc   +1 more source

An Approach to Fisher-Rao Metric for Infinite Dimensional Non-Parametric Information Geometry. [PDF]

Entropy (Basel)
Cheng B, Tong H.
europepmc   +1 more source

Fused ensembles of dynamic-rupture earthquake simulations to accelerate Bayesian inference. [PDF]

GEM
Kurapati V, Schneller D, Seelinger L, Niu Z, Gabriel AA, Bader M.   +5 more
europepmc   +1 more source