Results 1 to 10 of about 523 (177)

Detection of biological switches using the method of Gröebner bases [PDF]

open access: yesBMC Bioinformatics, 2019
Background Bistability and ability to switch between two stable states is the hallmark of cellular responses. Cellular signaling pathways often contain bistable switches that regulate the transmission of the extracellular information to the nucleus where
Yaman Arkun
doaj   +2 more sources

State work and the testing concours of citizenship. [PDF]

open access: yesBr J Sociol, 2020
Abstract Anyone trying to be a citizen has to pass through a set of practices trying to be a state. This paper investigates some of the ways testing practices calibrate citizens, and in doing so, perform “the state.” The paper focuses on three forms of citizenship testing, which it considers exemplary forms of “state work,” and which all, in various ...
Schinkel W.
europepmc   +2 more sources

Synthesis of the Inverse Kinematic Model of Non-Redundant Open-Chain Robotic Systems Using Groebner Basis Theory

open access: yesApplied Sciences, 2020
One of the most important elements of a robot’s control system is its Inverse Kinematic Model (IKM), which calculates the position and velocity references required by the robot’s actuators to follow a trajectory.
José Guzmán-Giménez   +3 more
doaj   +3 more sources

Groebner basis methods for multichannel sampling with unknown offsets

open access: yesApplied and Computational Harmonic Analysis, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Martin Vetterli   +2 more
exaly   +5 more sources

Modularity and Combination of Associative Commutative Congruence Closure Algorithms enriched with Semantic Properties [PDF]

open access: yesLogical Methods in Computer Science, 2023
Algorithms for computing congruence closure of ground equations over uninterpreted symbols and interpreted symbols satisfying associativity and commutativity (AC) properties are proposed. The algorithms are based on a framework for computing a congruence
Deepak Kapur
doaj   +1 more source

Explicit algebraic solution of Zolotarev's First Problem for low-degree polynomials

open access: yesJournal of Numerical Analysis and Approximation Theory, 2019
E.I. Zolotarev's classical so-called First Problem (ZFP), which was posed to him by P.L. Chebyshev, is to determine, for a given \(n\in{\mathbb N}\backslash\{1\}\) and for a given \(s\in{\mathbb R}\backslash\{0\}\), the monic polynomial solution \(Z ...
Heinz Joachim Rack, Robert Vajda
doaj   +7 more sources

Metabolomic evolution of the postpartum dairy cow uterus

open access: yesMolecular Reproduction and Development, Volume 90, Issue 12, Page 835-848, December 2023., 2023
In the uteri of dairy cows, a molecular signature of metabolic changes marks physiological recovery from early to mid‐postpartum, influencing the reproductive outcome at next insemination. Abstract High rates of early pregnancy loss are a critical issue in dairy herds, particularly in seasonal, grazing systems.
Nicolas Aranciaga   +5 more
wiley   +1 more source

Runge–Kutta optimization‐based selective harmonic elimination in an H‐bridge multilevel inverter

open access: yesIET Power Electronics, Volume 16, Issue 11, Page 1849-1865, 19 August 2023., 2023
This study utilizes the Runge–Kutta (RUN) metaheuristic optimization algorithm to demonstrate the Selective Harmonic Elimination Pulse Width Modulation (SHE‐PWM) technique in multilevel inverters (MLIs), including 5‐ and 7‐level modified H‐bridge (MHB) topology and a 9‐level asymmetric cascaded H‐bridge (CHB) inverter topology. The switching angles are
Injila Sajid   +7 more
wiley   +1 more source

Fast and fault‐tolerant model predictive control of MMCs under selective harmonic elimination

open access: yesIET Generation, Transmission &Distribution, Volume 17, Issue 1, Page 240-251, January 2023., 2023
This paper proposes an MPC strategy to control an MMC operating with SHE while adding FT capabilities to its operation. A modification process is proposed for SHE to maintain its harmonic performance during FT operation. To complete the transition, an MPC strategy is proposed to increase the capacitor voltages of the MMC and control the circulating ...
Ardavan Mohammadhassani   +1 more
wiley   +1 more source

Real-Time Adaptive Selective Harmonic Elimination for Cascaded Full-Bridge Multilevel Inverter

open access: yesEnergies, 2022
Selective Harmonics Elimination is a high-efficiency modulation method for multilevel inverters that allows handling very high voltage applications. It eliminates the most significant harmonics and fixes the desired fundamental component.
Miguel Vivert   +5 more
doaj   +1 more source

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