Properties of higher-order half-linear functional differential equations with noncanonical operators

Some new results are presented for the oscillatory and asymptotic behavior of higher-order half-linear differential equations with a noncanonical operator. We study the delayed and advanced equations subject to various conditions. © 2013 Zhang et al

Can the financial background of executives affect the digital transformation of enterprises?

The financial background of executives can provide financial consulting for enterprises and enhance effective interaction between enterprises and the financial industry, but the academic community has not yet clarified the impact of executive financial background on the digital transformation of enterprises. This article combines the macro pursuit of high-quality national development and examines the relationship between executive financial background and digital transformation of Chinese A-share listed companies from 2012 to 2022. Research has found that: The financial background of executives has a significant positive correlation with the digital transformation of enterprises. After key variable replacement, the above research results remain robust. This article reveals the impact and pathways of executive finance background on green investors under the background of high-quality economic development, enriches the research on executive characteristics and corporate financing constraints, and provides theoretical support and practical inspiration for executive recruitment decisions and structural design in enterprises

Selenium nanoparticles decorated with Ulva lactuca polysaccharide potentially attenuate colitis by inhibiting NF-κB mediated hyper inflammation

Additional file 1. Supplemental information of ULP-SeNPs concerns their stability in physiological solutions, uptake by BMDMs and effect on NF-κB activation

Oscillation of Third-Order Neutral Delay Differential Equations

The purpose of this paper is to examine oscillatory properties of the third-order neutral delay differential equation [a(t)(b(t)(x(t)+p(t)x(σ(t)))′)′]′+q(t)x(τ(t))=0. Some oscillatory and asymptotic criteria are presented. These criteria improve and complement those results in the literature. Moreover, some examples are given to illustrate the main results

Seasonal variation and driving factors of beta diversity of macroinvertebrate assemblages in subtropical Chinese high-mountain streams

Abstract High-mountain stream ecosystems are recognized as ideal arenas for natural experiments and for ecological monitoring and assessment research, owing to their sensitivity to climate gradients and human-mediated disturbances. In this study, we chose a subtropical mountainous stream system in southwestern China, to explore the spatiotemporal patterns and driving factors of taxonomic, phylogenetic, and functional beta diversity of macroinvertebrate assemblages. We found that taxonomic beta diversity was highest (on average, 0.577 in spring and 0.645 in autumn) across seasons, followed by phylogenetic (0.491 and 0.545) and functional (0.350 and 0.383) beta diversity, with the replacement component predominantly (57%–73%) contributing to all three facets of diversity. The taxonomic local contributions to beta diversity (LCBD) values were roughly equivalent among different sites in both spring and autumn, whereas phylogenetic LCBD (PLCBD) and functional LCBD (XLCBD) indices varied from site to site. Therefore, we recommend prioritizing site conservation based on LCBD, PLCBD, and XLCBD values to optimize biodiversity conservation strategies. The three-facets of dissimilarities were all somewhat higher in autumn than spring, possibly due to recolonization events in the metacommunity after the summer flood. Variation partitioning analysis indicated that environmental factors were more important than spatial factors in structuring all three facets of beta diversity and their components, although different sets of variables were identified as important for different diversity facets and between seasons. In summary, our study offers valuable insights into the patterns and drivers of macroinvertebrate beta diversity in high mountain streams and lays a baseline for targeted conservation strategies in these ecosystems.Abstract High-mountain stream ecosystems are recognized as ideal arenas for natural experiments and for ecological monitoring and assessment research, owing to their sensitivity to climate gradients and human-mediated disturbances. In this study, we chose a subtropical mountainous stream system in southwestern China, to explore the spatiotemporal patterns and driving factors of taxonomic, phylogenetic, and functional beta diversity of macroinvertebrate assemblages. We found that taxonomic beta diversity was highest (on average, 0.577 in spring and 0.645 in autumn) across seasons, followed by phylogenetic (0.491 and 0.545) and functional (0.350 and 0.383) beta diversity, with the replacement component predominantly (57%–73%) contributing to all three facets of diversity. The taxonomic local contributions to beta diversity (LCBD) values were roughly equivalent among different sites in both spring and autumn, whereas phylogenetic LCBD (PLCBD) and functional LCBD (XLCBD) indices varied from site to site. Therefore, we recommend prioritizing site conservation based on LCBD, PLCBD, and XLCBD values to optimize biodiversity conservation strategies. The three-facets of dissimilarities were all somewhat higher in autumn than spring, possibly due to recolonization events in the metacommunity after the summer flood. Variation partitioning analysis indicated that environmental factors were more important than spatial factors in structuring all three facets of beta diversity and their components, although different sets of variables were identified as important for different diversity facets and between seasons. In summary, our study offers valuable insights into the patterns and drivers of macroinvertebrate beta diversity in high mountain streams and lays a baseline for targeted conservation strategies in these ecosystems

Različiti utjecaji latentne topline u planetarnom graničnom sloju i mikrofizičkih procesa u oblacima na tajfun Sarika (2016)

Three simulation experiments were conducted on Typhoon (TC) “Sarika” (2016) using the WRF model, different effects of the latent heat in planetary boundary layer and cloud microphysical process on the TC were investigated. The control experiment well simulated the changes in TC track and intensity. The latent heat in planetary boundary layer or cloud microphysics process can affect the TC track and moving speed. Latent heat affects the TC strength by affecting the TC structure. Compared with the CTL experiment, both the NBL experiment and the NMP experiment show weakening in dynamics and thermodynamics characteristics of TC. Without the effect of latent heat, the TC cannot develop upwards and thus weakens in its intensity and reduces in precipitation; this weakening effect appears to be more obvious in the case of closing the latent heat in planetary boundary layer. The latent heat in planetary boundary layer mainly influences the generation and development of TC during the beginning stage, whereas the latent heat in cloud microphysical process is conducive to the strengthen and maintenance of TC in the mature stage. The latent heat energy of the cloud microphysical process in the TC core region is an order of magnitude larger than the surface enthalpy. But the latent heat release of cloud microphysical processes is not the most critical factor for TC enhancement, while the energy transfer of boundary layer processes is more important.Kako bi se ispitali različiti utjecaji latentne topline u planetarnom graničnom sloju i mikrofizičkih procesa u oblacima, WRF modelom su provedena tri eksperimenta za tajfun (TC) “Sarika” (2016). Kontrolnim eksperimentom dobro su simulirane promjene intenziteta i putanja TC-a. Latentna toplina u planetarnom graničnom sloju te mikrofizički procesi u oblacima mogu utjecati na putanju TC i na brzinu njegovog gibanja. Latentna toplina utječe na jačinu TC-a putem promjene strukture TC-a. U usporedbi s CTL eksperimentom i NBL i NMP eksperiment ukazuju na slabljenje dinamike i termodinamičkih svojstava TC-a. Bez utjecaja latentne topline TC se ne može vertikalno razvijati i stoga mu intenzitet slabi, a količina oborine se reducira; to slabljenje je očitije u slučaju kada je latentna toplina ograničena na planetarni granični sloj. Latentna toplina u planetarnom graničnom sloju uglavnom utječe na stvaranje i razvoj TC-a u početnoj fazi, dok latentna toplina vezana za mikrofizičke procese u oblaku pogoduje jačanju i održavanju njegove zrele faze. Latentna toplina mikrofizičkih procesa u oblakcima u jezgri TC-a je za red veličine veća od prizemne entalpije. Međutim, oslobađanje latentne topline pri mikrofizičkim procesima u oblacima nije najvažnije za jačanje TC-a, već je za njegovo jačanje važniji transfer energije u procesima planetarnog graničnog sloja.

Oscillation Theorems for Fourth-Order Half-Linear Delay Dynamic Equations with Damping

This article is concerned with oscillatory behavior of a class of fourth-order half-linear delay dynamic equations with damping on a time scale. Some new oscillation criteria are established. © 2013 Springer Basel

Oscillation of Third-order Nonlinear Delay Differential Equations

In this paper, we study the oscillatory behavior of a class of third-order nonlinear delay differential equations (a(t)(b(t)y′(t)) ′) ′+q(t)yγ(τ(t)) =0. Some new oscillation criteria are presented by transforming this equation to the first order delayed and advanced differential equations. Employing suitable comparison theorems, we establish new results on oscillation of the studied equation. Assumptions in our theorems are less restrictive; these criteria improve those in the recent paper [Appl. Math. Comput., 202 (2008), 102-112] and related contributions to the subject. Examples are provided to illustrate new results