Results 11 to 20 of about 286,672 (274)

Transnational Grandparenthood: A Qualitative Study on the Relationship of Grandparents and Grandchildren in the Migration Context

open access: yesInterpersona: An International Journal on Personal Relationships, 2022
Transnational relationships are defined as those between actors located in different national spaces, that is, relationships that are built beyond borders.
Emily Schuler   +2 more
doaj   +1 more source

Extreme Singular Values of Random Time-Frequency Structured Matrices [PDF]

open access: yes, 2019
In this paper, we investigate extreme singular values of the analysis matrix of a Gabor frame $(g, \Lambda)$ with a random window $g$. Columns of such matrices are time and frequency shifts of $g$, and $\Lambda\subset \mathbb{Z}_M\times\mathbb{Z}_M$ is ...
Salanevich, Palina
core   +2 more sources

Macroscopic fluctuations emerge in balanced networks with incomplete recurrent alignment

open access: yesPhysical Review Research, 2021
Networks of strongly coupled neurons with random connectivity exhibit chaotic, asynchronous fluctuations. In a previous study, we showed that when endowed with an additional component of low-rank connectivity consisting of the outer product of orthogonal
Itamar D. Landau, Haim Sompolinsky
doaj   +1 more source

Very Large-Scale Singular Value Decomposition Using Tensor Train Networks [PDF]

open access: yes, 2014
We propose new algorithms for singular value decomposition (SVD) of very large-scale matrices based on a low-rank tensor approximation technique called the tensor train (TT) format. The proposed algorithms can compute several dominant singular values and
Cichocki, Andrzej, Lee, Namgil
core   +1 more source

Robust control of ill-conditioned plants: high-purity distillation [PDF]

open access: yes, 1988
Using a high-purity distillation column as an example, the physical reason for the poor conditioning and its implications on control system design and performance are explained.
Doyle, John C.   +2 more
core   +1 more source

svt: Singular Value Thresholding in MATLAB

open access: yesJournal of Statistical Software, 2017
Many statistical learning methods such as matrix completion, matrix regression, and multiple response regression estimate a matrix of parameters. The nuclear norm regularization is frequently employed to achieve shrinkage and low rank solutions.
Cai Li, Hua Zhou
doaj   +1 more source

On D-stability and structured singular values [PDF]

open access: yesSystems & Control Letters, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chen, Jie   +2 more
openaire   +2 more sources

Non-Markovian Decay and Lasing Condition in an Optical Microcavity Coupled to a Structured Reservoir [PDF]

open access: yes, 2006
The decay dynamics of the classical electromagnetic field in a leaky optical resonator supporting a single mode coupled to a structured continuum of modes (reservoir) is theoretically investigated, and the issue of threshold condition for lasing in ...
C. Cohen-Tannoudji   +8 more
core   +2 more sources

Robust Stability Under Mixed Time Varying, Time Invariant and Parametric Uncertainty [PDF]

open access: yes, 1995
Robustness analysis is considered for systems with structured uncertainty involving a combination of linear time-invariant and linear time-varying perturbations, and parametric uncertainty.
Paganini, Fernando
core   +1 more source

「青春無煙/菸」校園電子煙防制教學活動成效之探討 “Youth Smoke-Free” Teaching Activities for Preventing E-Cigarette Use: A Pilot Study

open access: yesJournal of Research in Education Sciences, 2021
根據相關統計資料顯示,各國電子煙的盛行率逐年攀高,尤其青少年使用電子煙的平均盛行率已達16.4%。衛生福利部國民健康署(2021)推估我國青少年使用電子煙已超過5.7萬人,對青少年健康之危害甚大。為了能淨化校園,杜絕電子煙對青少年的戕害,發展電子煙防制措施已是刻不容緩。本研究採「前導試驗」方式,以某所國小為場域進行實務教學,旨在瞭解透過本教學方式是否能提升教學成效。收案時間為2021年3月至4月,由場域學校之教師執行本研究的實務教學活動,執行期間共計53人於教學前後完成問卷施測,結果發現在知識 ...
劉冠儀 Kuan-Yi Liu   +4 more
doaj   +1 more source

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