Results 181 to 190 of about 801,284 (359)

White matter microstructure and longitudinal relaxation time anisotropy in human brain at 3 and 7 T

open access: yesNMR in Biomedicine, Volume 36, Issue 1, January 2023., 2023
White matter (WM) with high structural anisotropy T1 shows angular dependency on B0. At 3T, a T1 peak at 54° and flat baseline across 0° and 90° are observed in WM [Panel A, T1 as a function of fibre‐to‐filed angle (q)]. At 7T, the T1 peak is centred at 40°.
Risto A. Kauppinen   +4 more
wiley   +1 more source

Optimal deployment of indoor wireless local area networks

open access: yesNetworks, Volume 81, Issue 1, Page 23-50, January 2023., 2023
Abstract We present a two‐phase methodology to address the problem of optimally deploying indoor wireless local area networks. In the first phase, we use Helmholtz's equation to simulate electromagnetic fields in a typical environment such as an office floor.
Antoine Oustry   +4 more
wiley   +1 more source

Erratum: “The Perseus ALMA Chemistry Survey (PEACHES). I. The Complex Organic Molecules in Perseus Embedded Protostars” (2021, ApJ, 910, 20) [PDF]

open access: hybrid, 2021
Yao-Lun Yang   +16 more
openalex   +1 more source

Evaluation of advanced lift concepts and fuel conservative short-haul aircraft, volume 1 [PDF]

open access: yes
The performance and economics of a twin-engine augmentor wing airplane were evaluated in two phases. Design aspects of the over-the-wing/internally blown flap hybrid, augmentor wing, and mechanical flap aircraft were investigated for 910 m.
Bennett, J. A.   +9 more
core   +1 more source

Machine Learning a Predictive Tool for the Analysis of NiCo2S4/Graphene Composites for Supercapacitor

open access: yesChemSusChem, Accepted Article.
Nickel cobalt sulfide (NiCo2S4) has attracted considerable interest as electrode material for supercapacitors owing to its distinct physical and chemical characteristics. However, the practical applications of pristine NiCo2S4 have been limited by issues such as small specific surface area, agglomeration, and volume changes during cycling, leading to ...
Heena S. Mulla   +6 more
wiley   +1 more source

Improving a constructive heuristic for the general routing problem

open access: yesNetworks, Volume 81, Issue 1, Page 93-106, January 2023., 2023
Abstract The general routing problem (GRP) is a fundamental 𝒩𝒫‐hard vehicle routing problem, first defined by Orloff in 1974. It contains as special cases the Chinese postman problem, the rural postman problem, the graphical TSP, and the Steiner TSP. We examine in detail a known constructive heuristic for the GRP, due to Christofides and others.
Burak Boyacı   +2 more
wiley   +1 more source

910-21 Ross Procedure: Is It Really the Ideal Solution?

open access: bronze, 1995
Zohair AI-Halees   +4 more
openalex   +1 more source

Real‐Time Implementation of Unknown Input Observer‐Based State and Unknown Disturbance Estimation for Series Active Filters

open access: yesInternational Journal of Circuit Theory and Applications, EarlyView.
For the series active filter (SAF), a combined controller and observer scheme is proposed. Two controllers—state feedback (SFB) and linear quadratic regulator (LQR)—along with state observers, including the Luenberger observer (LO), proportional–integral observer (PIO), and unknown input observer (UIO), have been designed.
Nagulapati Kiran, I. E. S. Naidu
wiley   +1 more source

Comparing mental health status and COVID‐19 event impact between survivors and the general population during the second wave of the pandemic in Iran

open access: yesNursing Open, Volume 10, Issue 2, Page 738-753, February 2023., 2023
Abstract Background and Aim The coronavirus disease 2019 (COVID‐19) pandemic has to date overwhelmed the survivors and the general population. The present study aimed to compare the mental health status and the COVID‐19 event impact between the survivors and the general population in Mazandaran Province, Northern Iran.
Maryam Hasannezhad Reskati   +7 more
wiley   +1 more source

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