Power properties of unbalanced linear time-invariant (LTI) loads in three-phase three-wire circuits at asymmetrical and nonsinusoidal supply voltages are investigated in this paper. It is demonstrated that the supply current of such loads can be decomposed into Currents’ Physical Components (CPC), associated with distinctive physical phenomena in the load. The power equation is developed and it...

The nuclear hormone receptor retinoic acid-related orphan receptor (ROR)gammat is required for the development of lymph nodes (LNs) and Peyer's patches (PPs), as these organs are absent in RORgammat-deficient mice. During fetal life, RORgammat is expressed exclusively in lymphoid tissue-inducer (LTi) cells, a cell type that localizes in developing LNs and PPs. LTi cells express surface lymphoto...

In this paper, we consider three problems, namely, the consensus (synchronization) problem, the model-reference consensus problem, and the regulation of consensus problem, for a network of identical linear time-invariant (LTI) multiinput and multi-output (MIMO) agents. For each problem, we propose a distributed LTI protocol to solve such a problem for a broad class of time-invariant network top...

The realization of a discrete-time, linear, time-invariant (LTI) filter from its impulse response provides insight into the role of linear algebra in the analysis of both dynamical systems and rational functions. For an LTI filter, a sequence of output data measured over some finite period of time may be expressed as the linear combination of the past input and the input measured over that same...

Classical digital speech signal processing assumes linearity, timeinvariance, and Gaussian random variables (LTI-Gaussian theory). In this article, we address the suitability of these mathematical assumptions for realistic speech signals with respect to the biophysics of voice production, finding that the LTI-Gaussian approach has some important accuracy and computational efficiency shortcoming...

Resilient control systems should efficiently restore control into physical systems not only after the sabotage of themselves, but also after breaking physical systems. To enhance resilience of control systems, and given an originally minimalinput controlled linear-time invariant(LTI) physical system, we address the problem of efficient control recovery into it after removing a known system vert...

This paper shows a strategy to carry out a wind turbine LPV (Linear Parameter Varying) and MIMO (Multivariable Input and Multivariable Output) model from a family of LTI (Linear Time Invariant) models. The family of LTI models is obtained from a linearization process in different operational points of the wind turbine model in GH Bladed. The procedure is valid for any family of LTI models obtai...

We consider the design of three different control architectures for a step response tracking problem within a class of linear time-invariant (LTI) plants. Our goal is to motivate the use of a particular switching architecture that has been the subject of our prior work. We present the design of the particular switching architecture that we use and characterize its step response performance (mea...

The natural cytotoxicity receptor NKp46 (encoded by Ncr1) is an activating receptor expressed by innate lymphoid cells (ILC), including NK cells, a subset of γδ T cells and intestinal RORγt IL-22 cells (NCR22 cells). Previous studies have proposed a critical role for NCR22 cells in mucosal barrier function through IL-22-mediated production of anti-bacterial peptides from intestinal epithelial c...

Abstract. For linear time-invariant (LTI) state space systems it is well-known that its asymptotic stability can be related to solution properties of the Lyapunov matrix equation according to so-called inertia theorems. The question now arises how analogous results can be obtained for LTI descriptor systems (singular systems, differential-algebraic equations). The stability behaviour of a LTI d...