Articles with "barrier functions" as a keyword



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Fumonisin B1 damages the barrier functions of porcine intestinal epithelial cells in vitro

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Published in 2019 at "Journal of Biochemical and Molecular Toxicology"

DOI: 10.1002/jbt.22397

Abstract: Fumonisins (Fums) are mycotoxins widely distributed in crops and feed, and ingestion of Fumsā€contaminated crops is harmful to animal health. The purpose of this study is to explore the effect of Fum B1 (FB1) on… read more here.

Keywords: epithelial cells; functions porcine; intestinal epithelial; porcine intestinal ... See more keywords
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In ovo feeding of l-arginine regulates intestinal barrier functions of posthatch broilers by activating the mTOR signaling pathway.

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Published in 2018 at "Journal of the science of food and agriculture"

DOI: 10.1002/jsfa.8609

Abstract: BACKGROUND During the last phase of incubation, dramatic physiological and metabolic changes occur in chick embryos, and supplies of nutrients and energy are always insufficient. This study investigated the effects of in ovo feeding (IOF)… read more here.

Keywords: iof arg; ovo feeding; mtor; posthatch broilers ... See more keywords
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Oral nanomedicine for modulating immunity, intestinal barrier functions, and gut microbiome.

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Published in 2021 at "Advanced drug delivery reviews"

DOI: 10.1016/j.addr.2021.114021

Abstract: The gastrointestinal tract (GIT) affects not only local diseases in the GIT but also various systemic diseases. Factors that can affect the health and disease of both GIT and the human body include 1) the… read more here.

Keywords: oral nanomedicine; barrier functions; gut microbiome; intestinal barrier ... See more keywords
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Control Barrier Functions for Signal Temporal Logic Tasks

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Published in 2019 at "IEEE Control Systems Letters"

DOI: 10.1109/lcsys.2018.2853182

Abstract: The need for computationally-efficient control methods of dynamical systems under temporal logic tasks has recently become more apparent. Existing methods are computationally demanding and hence often not applicable in practice. Especially with respect to multi-robot… read more here.

Keywords: control; control barrier; logic tasks; signal temporal ... See more keywords
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Integral Control Barrier Functions for Dynamically Defined Control Laws

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Published in 2021 at "IEEE Control Systems Letters"

DOI: 10.1109/lcsys.2020.3006764

Abstract: This letter introduces integral control barrier functions (I-CBFs) as a means to enable the safety-critical integral control of nonlinear systems. Importantly, I-CBFs allow for the holistic encoding of both state constraints and input bounds in… read more here.

Keywords: control; control barrier; dynamically defined; barrier functions ... See more keywords
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Control Barrier Functions in Sampled-Data Systems

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Published in 2021 at "IEEE Control Systems Letters"

DOI: 10.1109/lcsys.2021.3076127

Abstract: This letter presents conditions for ensuring forward invariance of safe sets under sampled-data system dynamics with piecewise-constant controllers and fixed time-steps. First, we introduce two different metrics to compare the conservativeness of sufficient conditions on… read more here.

Keywords: time; sampled data; control barrier; barrier functions ... See more keywords
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Risk-Averse Control via CVaR Barrier Functions: Application to Bipedal Robot Locomotion

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Published in 2022 at "IEEE Control Systems Letters"

DOI: 10.1109/lcsys.2021.3086854

Abstract: Enforcing safety in the presence of stochastic uncertainty is a challenging problem. Traditionally, researchers have proposed safety in the statistical mean as a safety measure for systems subject to stochastic uncertainty. However, ensuring safety in… read more here.

Keywords: safety; cvar; cvar barrier; robot locomotion ... See more keywords
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Formal Verification of Octorotor Flight Envelope Using Barrier Functions and Satisfiability Modulo Theories Solving

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Published in 2022 at "IEEE Control Systems Letters"

DOI: 10.1109/lcsys.2021.3119258

Abstract: This letter introduces a novel approach that combines the use of exponential barrier functions and satisfiability modulo theories solving to the formal safety analysis of flight controllers. Specifically, exponential barrier functions are used to construct… read more here.

Keywords: barrier functions; theories solving; modulo theories; satisfiability modulo ... See more keywords
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Funnel Control for Uncertain Nonlinear Systems via Zeroing Control Barrier Functions

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Published in 2023 at "IEEE Control Systems Letters"

DOI: 10.1109/lcsys.2022.3227514

Abstract: We consider the funnel-control problem for control-affine nonlinear systems with unknown drift term and parametrically uncertain control-input matrix. We develop an adaptive control algorithm that uses zeroing control barrier functions to accomplish trajectory tracking in… read more here.

Keywords: control barrier; control; zeroing control; nonlinear systems ... See more keywords
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Safety Certification for Stochastic Systems via Neural Barrier Functions

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Published in 2022 at "IEEE Control Systems Letters"

DOI: 10.1109/lcsys.2022.3229865

Abstract: Providing non-trivial certificates of safety for non-linear stochastic systems is an important open problem. One promising solution to address this problem is the use of barrier functions. Barrier functions are functions whose composition with the… read more here.

Keywords: stochastic systems; barrier; neural barrier; safety certification ... See more keywords
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Robust Data-Driven Control Barrier Functions for Unknown Continuous Control Affine Systems

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Published in 2023 at "IEEE Control Systems Letters"

DOI: 10.1109/lcsys.2023.3235958

Abstract: In this letter, we introduce robust data-driven control barrier functions (CBF-DDs) to guarantee robust safety of unknown continuous control affine systems despite worst-case realizations of generalization errors from prior data under various continuity assumptions. To… read more here.

Keywords: control barrier; control; robust data; data driven ... See more keywords