Showing papers in "Optik in 2019"

TL;DR: In this paper, the Schrodinger equation with arbitrary power of nonlinearity is considered and the influence of the non-linearity degree on the structure of periodic and solitary waves is studied.

TL;DR: The proposed real-time pedestrian detection algorithm based on tiny-yolov3 uses K-means clustering on the authors' training set to find the best priors and has higher detection accuracy under the premise of satisfying real- time performance.

TL;DR: In this paper, the authors applied F-expansion algorithm to obtain highly dispersive optical solitons with cubic-quintic-septic nonlinearity, and their respective existence criteria are also indicated.

TL;DR: The safety performance analysis shows that the proposed modified Logistic chaotic map has infinite key space and high security, and can resist the attack of the exhaustive method and statistical analysis.

TL;DR: In this paper, the authors applied Scutellaria baicalensis root extract as a reducing agent, hence that secondary metabolites may used as a capping agent for synthesizing zinc nanoparticles using one-pot method.

TL;DR: In this paper, a physical model described by the (2+1)-dimensional nonlinear Schrodinger equation with variable coefficients (2D-VcNLSE) is presented.

TL;DR: An effective image contrast enhancement method called an Adaptive Gamma Correction with Weighted Histogram Distribution (AGCWHD) method is proposed to improve contrast while preserving natural color and richer details in images.

TL;DR: In this paper, the non-autonomous Fokas-lenells equation (FLE) in the presence of perturbation terms is investigated and some exact solutions for the FLE are obtained by different techniques.

TL;DR: In this paper, the Schrodinger-Hirota equation (SHE) is used to regulate the proliferation of solitons in diverse variety of dispersive optical fibers.

TL;DR: In this article, the integrability of the traveling wave reduction for the Triki-Biswas equation is considered and two first integrals for this equation are found, and it is shown that the triki-biswas equation can be transformed to a nonlinear ordinary differential equation of the first order.

TL;DR: In this article, the authors apply an analytical algorithm, namely the modified auxiliary equation method, to investigate the complex wave structures for abundant solutions related to the complex Ginzburg-Landau model.

TL;DR: In this article, the authors studied soliton dynamics for Biswas-Arshed model when group velocity dispersion is negligibly small and self-phase modulation is totally absent, and two nonlinear forms for the model are studied by the aid of extended trial function scheme.

TL;DR: In this article, the authors applied Kalopanax septemlobus-ZnO nanoparticles with green approach one-pot synthesis and found the presence of functional groups which as a capping agent and formation of ZnO NPs were confirmed in Fourier Transform Infrared Spectroscopy (FTIR) result.

TL;DR: In this paper, the exact nonlinearly chirped singular soliton solutions of the Triki-Biswas equation with non-Kerr dispersion were studied by means of the traveling-wave method.

TL;DR: In this article, the perturbed Chen-Lee-Liu equation for describing propagation pulse in optical fiber is considered and the traveling wave reduction is used to obtain the nonlinear first-order differential equation.

TL;DR: In this paper, the authors considered the traveling wave reduction of the Kundu-Mukherjee-Naskar model for describing the optical solitons, and two first integrals for the system of equations were found.

TL;DR: In this paper, the traveling wave reduction of the Schrodinger equation with anti-cubic nonlinearity for describing of the optical solitons is studied, and the first integrals of the system of equations corresponding to the real and imaginary part of an optical pulse are obtained.

TL;DR: In this paper, the conservation laws for optical solitons with anti-cubic nonlinearity and its generalized counterpart are given in terms of Gauss' hypergeometric functions.

TL;DR: In this article, zinc oxide nanoparticles (ZnONPs) were synthesized using the aqueous extract of Peltophorum pterocarpum leaves by the reduction of zinc acetate.

TL;DR: In this article, the periodic arrays of multi-layer graphene disks placed near a metallic ground coated by dielectric spacers are proposed and analyzed by the circuit model based on the reflected fields to predict the perfect absorption response in the terahertz (THz) region.

TL;DR: In this article, the authors investigated the effects of defect density and energy level of the perovskite absorber layer and perovsite/HTM interface layer on the performance, respectively, and found that the defect energy level more than 0.3 ǫ eV above conduction band has almost no detrimental effect on the device performance.

TL;DR: In this article, the photocatalytic performance of these nanoparticles was evaluated using methylene blue dye, and the result showed that the performance was 94.07% depending on the particle size of the CuO nanoparticles.

TL;DR: In this article, a D-shaped PCF sensor with high spectral sensitivity of 50,000nm/RIU accompanied by high resolution 4'×'10−4 RIU, and also maximum amplitude sensitivity of 1266.67 RIU−1.

TL;DR: In this article, the authors presented a few higher-order partial differential equations which can be used for description of propagation pulses in optical fibers, where the main criterion for the construction of equations was the presence of soliton solutions of a certain form.

TL;DR: In this paper, the root extract of C. lanceolata was used as a capping agent for the surface of ZnO nanoparticle, ultimately making it an efficient photocatalyst, and the structure of green synthesized Cl-ZnO NPs was characterized using X-ray powder diffraction (XRD), Elemental Distribution (EDX) and morphology using Field Emission Transmission Electron Microscopy (FE-TEM).

TL;DR: In this paper, the Biswas-Arshed model was employed to obtain optical solitons of its in this work. And the trial equation technique was used to catch out both highly important solitions and singular periodic solutions.

TL;DR: In this article, the structural parameters of As40S45Se15 glassy alloy and optical properties of its thin films were investigated in the spectral range of transmittance between 400 and 2500 nm.

TL;DR: This framework utilizes Contrast Limited Adaptive Histogram Equalization (CLAHE) for eliminating the background from the source image and enhances the foreground blood vessel pixels, and Deep Learning Based Support Vector Machine (DLBSVM) is proposed for classification and extraction of blood vessels.

TL;DR: Simulations and analysis outcomes are shown that the proposed algorithm can resist against the different attacks strongly and efficiently.