Further results on stability analysis of Takagi–Sugeno fuzzy time-delay systems via improved Lyapunov–Krasovskii functional

The problem of delay-range-dependent (DRD) stability analysis for continuous time Takagi–Sugeno (T–S) fuzzy time-delay systems (TDSs) is addressed in this paper. An improved DRD stability criterion is proposed in an linear matrix inequality (LMI) framework by constructing an appropriate delay-product-type (DPT) Lyapunov–Krasovskii functional (LKF) to make use of Bessel-Legendre polynomial based relaxed integral inequality. The modification in the proposed LKF along with the judicious choice of integral inequalities helps to obtain a less conservative delay upper bound for a given lower bound. The efficacy of the obtained stability conditions is validated through the solution of three numerical examples

On conversion of luminescence into absorption and the van Roosbroeck-Shockley relation

The problem of conversion of experimentally measured luminescence spectrum into the absorption cross section is revisited. The common practice of using the van Roosbroeck-Shockley (or Kubo-Martin-Schwinger or Kennard-Stepanov) relation in this context is incorrect because luminescence from semiconductors is essentially all due to the spontaneous emission component of the recombination of carriers distributed far-from-equilibrium. A simple, physically consistent, and practical prescription for converting the luminescence spectra into absorption is presented and its relation to the so-called nonequilibrium generalization of the van Roosbroeck-Shockley relationship is discussed.Comment: 3 pages, 2 figure

Multicolor Imaging of Myelinated Nerve Fibers Contiguous to the Optic Disc

Myelinated nerve fibers (MNF) are characterized as whitish, relatively sharply demarcated, feather-like structures located in the retinal nerve fiber layer. MNF are located quite frequently in contiguity with the optic nerve head. This may lead to a diagnostic dilemma by preventing clear visualization of the optic disc margins. We herein describe the utility of multicolor imaging (MCI) in identifying optic disc anatomy in a case of MNF contiguous to the disc. MCI and infrared reflectance were superior to color fundus photography in delineating disc margins. Our pilot study describes the efficacy of MCI in delineating optic disc anatomy in a case of MNF

Multicolor Imaging of Myelinated Nerve Fibers Contiguous to the Optic Disc

Myelinated nerve fibers (MNF) are characterized as whitish, relatively sharply demarcated, feather-like structures located in the retinal nerve fiber layer. MNF are located quite frequently in contiguity with the optic nerve head. This may lead to a diagnostic dilemma by preventing clear visualization of the optic disc margins. We herein describe the utility of multicolor imaging (MCI) in identifying optic disc anatomy in a case of MNF contiguous to the disc. MCI and infrared reflectance were superior to color fundus photography in delineating disc margins. Our pilot study describes the efficacy of MCI in delineating optic disc anatomy in a case of MNF.kbddcapseudomyelinatednervefiber

Should Tocilizumab Be Used Routinely in New Patients With a Diagnosis of Giant Cell Arteritis?

Myelinated nerve fibers (MNF) are characterized as whitish, relatively sharply demarcated, feather-like structures located in the retinal nerve fiber layer. MNF are located quite frequently in contiguity with the optic nerve head. This may lead to a diagnostic dilemma by preventing clear visualization of the optic disc margins. We herein describe the utility of multicolor imaging (MCI) in identifying optic disc anatomy in a case of MNF contiguous to the disc. MCI and infrared reflectance were superior to color fundus photography in delineating disc margins. Our pilot study describes the efficacy of MCI in delineating optic disc anatomy in a case of MNF