Monitoring the Landscape Changes Applying Gradient Analysis Case Study (County Behbehan) by Mir Mehrdad Mirsanjari, Fatemeh Mohammadyari

“…In order to evaluate the socioeconomic and ecological functions of a city, it is essential to quantify the pattern of the land. …”
Get full text

Research on the Performance Optimization of Turbulent Self-Noise Suppression and Sound Transmission of Acoustic Windows Made from Functionally Graded Material by Bing LI, Fu-Lin ZHOU, Jun FAN, Bin WANG, Liwen TAN

“…For a simplified sonar dome model, an optimization method for internal gradients of functionally graded material (FGM) acoustic windows is proposed in this paper. …”
Get full text

Vibration Characteristic Analysis of Sandwich Composite Plate Reinforced by Functionally Graded Carbon Nanotube-Reinforced Composite on Winkler/Pasternak Foundation by Mengzhen Li, Xiaolong Liu, Mohammad Yazdi, Wei Chen

“…This paper presents numerical investigations into the free vibration properties of a sandwich composite plate with two fiber-reinforced plastic (FRP) face sheets and a functionally graded carbon nanotube-reinforced composite (FG-CNTRC) core made of functionally graded carbon nanotube-reinforced composite resting on Winkler/Pasternak elastic foundation. …”
Get full text

Electronic Structure of Vanadium-Doped TiO2 of Both Anatase and Rutile Based on Density Functional Theory (DFT) Approach by Hari Sutrisno

“…The first-principle calculation of V-doped TiO2 of both anatase and rutile were analyzed by density-functional theory (DFT) with generalized gradient approximation from Perdew-Burke-Ernzerhof (GGA+PBE), Perdew-Wang’s 1991 (GGA+PW91) and local density approximation (LDA) for exchange-correlation functionals. …”
Get full text

Experimental Investigation of the Mechanical and Structural Properties of a Functionally Graded Material by Adding Alumina Nanoparticles Using A Centrifugal Technique by Adwaa Mohammed abdulmajeed, Ahmed Fadhil Hamzah

“… In this work, functionally graded materials were synthesized by centrifugal technique at different volume fractions 0.5, 1, 1.5, and 2% Vf with a rotation speed of 1200 rpm and a constant rotation time, T = 6 min . …”
Get full text

Standing tall together: Peatland vascular plants facilitate Sphagnum moss microtopography by Yvet Telgenkamp, Bjorn J.M. Robroek, Line Rochefort, Harry E.R. Shepherd, Rosa W.C. Boone, Carrie L. Thomas

“…To preserve the heterogenic and diverse nature of peatland ecosystems, a well-functioning plant community is imperative. In intact peat bogs, such communities consist of a balanced mix of peat mosses and vascular plants across a hydrological gradient. …”
Get full text

Habitat Heterogeneity of Nitrogen and Phosphorus Cycling Functional Genes in Rhizosphere Microorganisms of <i>Pinus tabuliformis</i> in Qinling Mountains, China by Hang Yang, Yue Pang, Ying Yang, Dexiang Wang, Yuchao Wang

“…In this study, we investigated the <i>P. tabuliformis</i> rhizosphere microbial functional genes which are related to N and P cycles across ridge and slope habitats between different elevational gradients, analyzed their composition and abundance, and analyzed their responses to environmental factors. …”
Get full text

Lightweight SiBCN-modified carbon-bonded carbon fiber composites with directional heat-leading function for efficient thermal protection by Xinqiao Wang, Wentao Wu, Yan Zhang, Baolu Shi, Bin Ma, Xiaoguang Luo, Ning Zhou, Baosheng Xu

Get full text

Community dynamics of stabilized dune xerophytic shrubs by Sergio Chozas

“…I propose a conceptual model including the ecological dynamics of these communities supported by the analyses of both kinds of drivers and changes in functional diversity. The ecological dynamics between the communities dominated by <em>Stauracanthus genistoides</em> and <em>Ulex australis</em> throughout their co-occurrence area were significantly consistent, despite the factors driving this successional gradient changing regionally. …”
Get full text

Electronic characteristics of CdS quantum dots with defects by Ihor Kupchak, Dmytro Korbutyak, Natalya Serpak

“…Using the density functional theory and the generalized gradient approximation, we calculated the atomic structure, the density of electronic states, and the optical absorption spectra of CdS quantum dots containing intrinsic defects — a cadmium vacancy VCd and an interstitial sulfur atom SI, and substitutional impurities — zinc and copper in place of the atom cadmium — ZnCd and CuCd, respectively. …”
Get full text

Response of Montane Fish Biodiversity to Landscape and Anthropogenic Activity Under Potential Water Quality Pathways by Wenjun Zhong, Wanjuan Bi, Yan Zhang, Feilong Li, Zehua Zhang, Xiangyun Huang, Xunjie Liu, Yifan Wang, Song Zhang, Shan Xu, Loïc Pellissier, Xiaowei Zhang

“…Third, elevation gradients and human footprint exerted stronger direct effects on taxonomic diversity than on functional or genetic metrics, independent of spatial autocorrelation. …”
Get full text

Patterns of Variation and Coordination in Shoot Traits Across Four Branching Orders of <i>Larix principis-rupprechtii</i> by Yang Yu, Huayong Zhang, Zhongyu Wang, Zhao Liu

“…Intraspecific variation in functional traits can more accurately quantify plant responses to environmental changes and resource competition, while the plant economic spectrum provides a fundamental framework for understanding trait variation along environmental gradients. …”
Get full text

On Optimal Frequencies for Reconstruction of a One-Dimensional Profile of Gradient Layer’s Refractive Index by Dmitrii Tumakov

“…The problem of reconstruction of a one-dimensional profile of gradient layer’s refractive index is investigated. …”
Get full text

Parameter Optimization of Droop Controllers for Microgrids in Islanded Mode by the SQP Method with Gradient Sampling by Peijie Li, Ziyi Yang, Shuchen Huang, Jun Zhang

“…In the current iteration, the gradient of the nonsmooth function can be evaluated on a set of randomly generated nearby points by computing closed-form sensitivities. …”
Get full text

PSF Estimation via Gradient Cepstrum Analysis for Image Deblurring in Hybrid Sensor Network by Mingzhu Shi, Shuaiqi Liu

“…Single image deblurring is a highly ill-posed problem and usually regularized by alternating estimating point spread function (PSF) and recovering blur image, which leads to high complexity and low efficiency. …”
Get full text

Utility of indicator thresholds across spatial gradients for applications to ecosystem‐based fisheries management by Shannon M. Hennessey, Jamison M. Gove, Mary K. Donovan

“…To understand how the ecosystem indicators relate to commonly used metrics in single‐species assessments, we also tested whether these relationships were consistent across species, species complexes, and functional groups. Gradient forests and generalized additive mixed models revealed detectable threshold relationships across five environmental drivers and six ecosystem indicators. …”
Get full text

A Gradient-Based Interior-Point Method to Solve the Many-to-Many Assignment Problems by Nitish Das, P. Aruna Priya

“…Then, the logarithmic barrier function (LBF) based gradient descent approach is executed to reach an accurate solution. …”
Get full text

On the second gradient nonlinear spectral constitutive modelling of viscoelastic composites reinforced with stiff fibers by M. H. B. M. Shariff

“…Abstract General novel nonlinear second-gradient spectral constitutive models for rate dependent fiber-reinforced viscoelastic solids that consider bending stiffness are developed. …”
Get full text

The Propagation Properties of a Lorentz–Gauss Vortex Beam in a Gradient-Index Medium by Mohammed S. Qusailah, Abdu A. Alkelly, Wafa’a A. Al-Bahry

“…Based on the Huygens–Fresnel integral and ABCD matrix, the propagation equation for the Lorentz–Gauss vortex beam (LGVB) in a gradient-index medium (GRIN) is rederived. The evolution of the intensity and phase distributions of an LGVB through a GRIN medium are numerically calculated as a function of the gradient-index parameter with changes in the incident beam parameters. …”
Get full text

An Accelerated Proximal Gradient Algorithm for Singly Linearly Constrained Quadratic Programs with Box Constraints by Congying Han, Mingqiang Li, Tong Zhao, Tiande Guo

“…Recently, the existed proximal gradient algorithms had been used to solve non-smooth convex optimization problems. …”
Get full text