Results 31 to 40 of about 30,414,319 (280)

Real-Time Prediction of Rate of Penetration in S-Shape Well Profile Using Artificial Intelligence Models

Sensors, 2020
Rate of penetration (ROP) is defined as the amount of removed rock per unit area per unit time. It is affected by several factors which are inseparable.
Salaheldin Elkatatny
doaj   +1 more source

VitalDB, a high-fidelity multi-parameter vital signs database in surgical patients

Scientific Data, 2022
In modern anesthesia, multiple medical devices are used simultaneously to comprehensively monitor real-time vital signs to optimize patient care and improve surgical outcomes.
Hyung‐Chul Lee, Yoonsang Park, S. Yoon, Seong-Mi Yang, Dongnyeok Park, Chul-Woo Jung   +5 more
semanticscholar   +1 more source

Complex Permittivity Measurements of Film-Type Materials: Effect of the Waveguide Flange

IEEE Access
The flexibility and thinness of most film-type materials make it difficult to use conventional measurement methods such as those in international or organizational standards to accurately measure the complex permittivity of these materials.
Han-Hee Lee, Sang Wook Yoon, Jae Wook Lee   +2 more
doaj   +1 more source

Magnetic S-parameter

Physical review letters, 2010
We propose a direct test of the existence of gauge duals for nonsupersymmetric asymptotically free gauge theories developing an infrared fixed point by computing the S-parameter in the electric and dual magnetic description. In particular we show that at the lower bound of the conformal window the magnetic S-parameter, i.e.
openaire   +5 more sources

Broadband Coaxial S-Parameter Measurements for Cryogenic Quantum Technologies

IEEE transactions on microwave theory and techniques
Development of RF and microwave metrology capabilities at cryogenic temperatures is critical for the development of high-performance microwave devices to facilitate commercialization of cryogenic quantum technologies.
Sang-Hee Shin, M. Stanley, James Skinner, S. D. de Graaf, N. Ridler   +4 more
semanticscholar   +1 more source

Three-parameter deformation of ℝ × S 3 in the Landau-Lifshitz limit

Journal of High Energy Physics, 2021
In this article we construct the effective field theory associated to the ℝ × S 3 sector of the three-parameter deformation of AdS3 × S 3 × T 4 in the Landau-Lifshitz approximation.
Juan Miguel Nieto García, Leander Wyss
doaj   +1 more source

Development and investigation of the characteristics of a volumetric resonator for an automated information and measurement system for determining the dielectric parameters of ferrites in the ultrahigh frequency range

Вестник Самарского государственного технического университета. Серия: Технические науки
The production of ultra-high-frequency ferrites is a complex, multi-stage process requiring control of materials and operating conditions at all stages. Small deviations in any process step can lead to significant changes in the dielectric parameters of ...
Alexander S. Nechaev, Egor D. Partiolin
doaj   +1 more source

Uncertainties of S-Parameter Measurements in Rectangular Waveguides at PTB [PDF]

Advances in Radio Science
In this work the determination of measurement uncertainties in scattering parameter measurements for waveguide interfaces ranging from R 100 (WR 90) to R 2.6k (WR 3, WM-864) is presented.
A. T. Schramm, F. K. H. Gellersen, K. Kuhlmann   +2 more
doaj   +1 more source

Stability Analysis and Hopf Bifurcation of a Delayed Diffusive Predator–Prey Model with a Strong Allee Effect on the Prey and the Effect of Fear on the Predator

Mathematics, 2023
In this paper, we propose a diffusive predator–prey model with a strong Allee effect and nonlocal competition in the prey and a fear effect and gestation delay in the predator.
Yining Xie, Jing Zhao, Ruizhi Yang
doaj   +1 more source

Introduction to S-Parameters [PDF]

, 2000
This chapter describes circuit parameters that are based on power flow. The open-circuit Z-parameters and the short-circuit Y-parameters are used in many of the circuit computer-aided design (CAD) programs. We can calculate the network parameters of circuits made from well-known components such as resistors, capacitors, and inductors.
openaire   +1 more source