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Flatness-based adaptive sliding mode tracking control for a quadrotor with disturbances
Journal of the Franklin Institute, 2018In this paper, a flatness-based adaptive sliding mode control strategy is presented to solve the trajectory tracking problem of a quadrotor. According to the differential flatness theory, the typical under-actuated quadrotor dynamics is transformed into ...
Dailiang Ma +4 more
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SIAM Review, 2007
How does one determine a surface which is as flat as possible, such as those created by soap film surfaces? What does it mean to be as flat as possible? In this paper we address this question from two distinct points of view, one local and one global in nature.
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How does one determine a surface which is as flat as possible, such as those created by soap film surfaces? What does it mean to be as flat as possible? In this paper we address this question from two distinct points of view, one local and one global in nature.
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Teaching and Learning in Medicine, 2007
The biomedical model, attempting to explain health and disease in terms of the physical sciences, tends to eliminate or ignore other aspects of sickness phenomena. Medicine and medical education have sought to assert the importance of the patients subjectivity, including psychological makeup, social context, illness framework, beliefs, culture, and ...
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The biomedical model, attempting to explain health and disease in terms of the physical sciences, tends to eliminate or ignore other aspects of sickness phenomena. Medicine and medical education have sought to assert the importance of the patients subjectivity, including psychological makeup, social context, illness framework, beliefs, culture, and ...
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Semigroup Forum, 2003
Let \(S=G\dot\cup I\) be a monoid where \(G\) is a group and \(I\) an ideal of \(S\). It is proved that if an \(S\)-act is principally weakly flat, (weakly) flat, torsion free or satisfies condition \((P)\) or \((P_E)\) as an \(I^1\)-act, then it has these properties as an \(S\)-act as well.
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Let \(S=G\dot\cup I\) be a monoid where \(G\) is a group and \(I\) an ideal of \(S\). It is proved that if an \(S\)-act is principally weakly flat, (weakly) flat, torsion free or satisfies condition \((P)\) or \((P_E)\) as an \(I^1\)-act, then it has these properties as an \(S\)-act as well.
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Trends in Pharmacological Sciences, 2014
It might have seemed unlikely that something as deceptively straightforward as the cellular uptake of two arachidonic acid derivatives would cause so much controversy, but that is exactly the way things have turned out for the endocannabinoids anandamide and 2-arachidonoylglycerol since the first detailed description of their uptake [1].
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It might have seemed unlikely that something as deceptively straightforward as the cellular uptake of two arachidonic acid derivatives would cause so much controversy, but that is exactly the way things have turned out for the endocannabinoids anandamide and 2-arachidonoylglycerol since the first detailed description of their uptake [1].
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Mediterranean Journal of Mathematics, 2017
From the authors' introduction: ``It will be seen that an algebraic plane curve, viewed as a Riemann surface, may be assigned a polyhedral geometry in a natural way.'' Theorem 1.1. If \(\mathcal{C} \subset \mathbb{C}\mathbb P^{2}\) is an irreducible, real algebraic curve of degree \(d \leq 7\), then \((\mathcal{C}, dx^{2}+dy^{2})\) is flat and compact ...
Langer, Joel C., Singer, David A.
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From the authors' introduction: ``It will be seen that an algebraic plane curve, viewed as a Riemann surface, may be assigned a polyhedral geometry in a natural way.'' Theorem 1.1. If \(\mathcal{C} \subset \mathbb{C}\mathbb P^{2}\) is an irreducible, real algebraic curve of degree \(d \leq 7\), then \((\mathcal{C}, dx^{2}+dy^{2})\) is flat and compact ...
Langer, Joel C., Singer, David A.
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Flat Topic Mapping for a Flat World
2007Every topic map has something in common with all other topic maps: a commitment to the goal of "one topic per subject", a state in which everything known about each distinct subject will be (apparently) co-located at its unique topic. A side effect of this commitment is that all topic maps, regardless of the diversity of the universes of discourse in ...
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Journal of Symbolic Logic, 1994
AbstractLet X be a set, and let be the superstructure of X, where X0 = X and is the power set of X) for n ∈ ω. The set X is called a flat set if and only if for each x ∈ X, and x ∩ ŷ = ø for x, y ∈ X such that x ≠ y. where is the superstructure of y.
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AbstractLet X be a set, and let be the superstructure of X, where X0 = X and is the power set of X) for n ∈ ω. The set X is called a flat set if and only if for each x ∈ X, and x ∩ ŷ = ø for x, y ∈ X such that x ≠ y. where is the superstructure of y.
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American Journal of Mathematics, 1993
This paper is an ample study destinated to the geometry of flat surfaces. Let \(T(g,n)\) be a Teichmüller space identified with the set of complete, finite volume metrics of constant negative curvature, on a closed oriented surface of genus \(g\) with \(n\) punctures.
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This paper is an ample study destinated to the geometry of flat surfaces. Let \(T(g,n)\) be a Teichmüller space identified with the set of complete, finite volume metrics of constant negative curvature, on a closed oriented surface of genus \(g\) with \(n\) punctures.
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History and Theory, 2019
ABSTRACTThis article pursues an explication of the meaning of “historicity.” This explication is in part theoretical and in part historical, passing by the German conceptual history of the term, a Romantic‐era fairy tale with bearings on the matter, and structuralist theories of history, especially Claude Lévi‐Strauss's and Louis Althusser's.
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ABSTRACTThis article pursues an explication of the meaning of “historicity.” This explication is in part theoretical and in part historical, passing by the German conceptual history of the term, a Romantic‐era fairy tale with bearings on the matter, and structuralist theories of history, especially Claude Lévi‐Strauss's and Louis Althusser's.
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