Miracle-dz/UniFAR-FTUs huggingface dataset:
Photonic nanojet-induced modes in chains of size-disordered microspheres with an attenuation of only 0.08dB per sphere

By using spatially resolved spectroscopy the authors demonstrate that the periodical focusing of light in straight chains of touching 5μm polystyrene microspheres is characterized with the periodicity of photonic nanojets corresponding to the size of two spheres. In transmission spectra of long (>20 spheres) chains they observe Fabry–Perot fringes with propagation losses of only 0.08dB per sphere in the maxima of transmission peaks. Due to mechanical robustness, tight focusing of the beam, high optical throughput, and broad spectral transmission properties such chains can be used in a variety of biomedical applications as optical microprobes with subwavelength spatial resolution.
An Improvement of the Portmanteau Statistic

Abstract. The portmanteau statistic is based on the first m‐residual autocorrelations, and is used for diagnostic checks on the adequacy of fit of a model. In this article, we propose a modified portmanteau statistic with a correction term that allows for the use of small values of m for the chi‐squared test. For this modification, we take a different approach to that suggested by Ljung [Biometrika (1986), Vol. 73, pp. 725–30]. Their empirical behaviour is clarified using asymptotic theory.
N6-methyladenosine RNA is modified in the rat hippocampus following traumatic brain injury with hypothermia treatment

Recent studies have suggested a role for N6-methyladenosine (m6A) modification in neurological diseases. Hypothermia, a commonly used treatment for traumatic brain injury, plays a neuroprotective role by altering m6A modifications. In this study, methylated RNA immunoprecipitation sequencing (MeRIP-Seq) was applied to conduct a genome-wide analysis of RNA m6A methylation in the rat hippocampus of Sham and traumatic brain injury (TBI) groups. In addition, we identified the expression of mRNA in the rat hippocampus after TBI with hypothermia treatment. Compared with the Sham group, the sequencing results of the TBI group showed that 951 different m6A peaks and 1226 differentially expressed mRNAs were found. We performed cross-linking analysis of the data of the two groups. The result showed that 92 hyper-methylated genes were upregulated, 13 hyper-methylated genes were downregulated, 25 hypo-methylated genes were upregulated, and 10 hypo-methylated genes were downregulated. Moreover, a total of 758 differential peaks were identified between TBI and hypothermia treatment groups. Among these differential peaks, 173 peaks were altered by TBI and reversed by hypothermia treatment, including Plat, Pdcd5, Rnd3, Sirt1, Plaur, Runx1, Ccr1, Marveld1, Lmnb2, and Chd7. We found that hypothermia treatment transformed some aspects of the TBI-induced m6A methylation landscape of the rat hippocampus.
Regular semigroups which are subdirect products of a band and a semilattice of groups

In the study of the structure of regular semigroups, it is customary to impose several conditions restricting the behaviour of ideals, idempotents or elements. In a few instances, one may represent them as subdirect products of some much more restricted types of regular semigroups, e.g., completely (0-) simple semigroups, bands, semilattices, etc. In particular, studying the structure of completely regular semigroups, one quickly distinguishes certain special cases of interest when these semigroups are represented as semilattices of completely simple semigroups. In fact, this semilattice of semigroups may be built in a particular way, idempotents may form a subsemigroup, ℋ may be a congruence, and so on.
Interactional Metadiscourse Markers in English Research Article Abstracts Written by Non-Native Authors: A Corpus-Based Contrastive Study

Abstracts in research articles play a crucial role in settling the impact of academic articles. However, despite the abundance of research on academic discourse, variation in its linguistic features among scholars from different academic cultures seems to have remained untouched. This corpus linguistics study presents a comparative analysis of interactional metadiscourse markers in 96 research article abstracts written in English by both Russian and Spanish scholars in the field of linguistics. The study is based on the assumption that the distribution of interactional metadiscourse devices is different in the abstracts produced by each group of scholars. This is because Spanish academic discourse has been influenced by the growing expansion of Anglophone academic conventions to a larger extent. The theoretical basis of the study is Hyland’s (2005) taxonomy of interactional metadiscourse markers, which offers a pragmatically-grounded method for studying different types of such markers in academic discourse. Findings revealed that Spanish scholars leave more traces of themselves in their writing and take far more explicitly involved positions than Russian scholars. These findings carry pedagogical implications for academic writing course designers and instructors and can enhance non-native English writers’ knowledge of culture-specific and international academic writing conventions in the discipline.
Assessment of trunk microtensiometer as a novel biosensor to continuously monitor plant water status in nectarine trees

The objective of this work was to validate the trunk water potential (Ψtrunk), using emerged microtensiometer devices, as a potential biosensor to ascertain plant water status in field-grown nectarine trees. During the summer of 2022, trees were subjected to different irrigation protocols based on maximum allowed depletion (MAD), automatically managed by real-time soil water content values measured by capacitance probes. Three percentages of depletion of available soil water (α) were imposed: (i) α=10% (MAD=27.5%); (ii) α=50% (MAD=21.5%); and (iii) α=100%, no-irrigation until Ψstem reached -2.0 MPa. Thereafter, irrigation was recovered to the maximum water requirement of the crop. Seasonal and diurnal patterns of indicators of water status in the soil-plant-atmosphere continuum (SPAC) were characterised, including air and soil water potentials, pressure chamber-derived stem (Ψstem) and leaf (Ψleaf) water potentials, and leaf gas exchange, together with Ψtrunk. Continuous measurements of Ψtrunk served as a promising indicator to determine plant water status. There was a strong linear relationship between Ψtrunk vs. Ψstem (R2 = 0.86, p<0.001), while it was not significant between Ψtrunk vs. Ψleaf (R2 = 0.37, p>0.05). A mean gradient of 0.3 and 1.8 MPa was observed between Ψtrunk vs.Ψstem and Ψleaf, respectively. In addition, Ψtrunk was the best matched to the soil matric potential. The main finding of this work points to the potential use of trunk microtensiometer as a valuable biosensor for monitoring the water status of nectarine trees. Also, trunk water potential agreed with the automated soil-based irrigation protocols implemented.
Time's arrow and Archimedes' point new directions for the physics of time

The View from Nowhen More Apt to Be Lost than Got: The Lessons of the Second Law New light on The Arrow of Radiation Arrows and Error in Contemporary Cosmology Innocence and Symmetry in Microphysics In Search of the Third Arrow Convention Objectified and the Past Unlocked Einstein's Issue: The Puzzle of Contemporary Quantum Theory The Case for Advanced Action Overview.
A Hyperbolic Free Boundary Problem Modeling Tumor Growth

In this paper we study a free boundary problem modeling the growth of tumors with three cell populations: proliferating cells, quiescent cells and dead cells. The densities of these cells satisfy a system of nonlinear first order hyperbolic equations in the tumor, with tumor surface as a free boundary. The nutrient concentration satisfies a diffusion equation, and the free boundary r = R(t) satisfies an integro-differential equation. We consider the radially symmetric case of this free boundary problem, and prove that it has a unique global solution for all the three cases 0 0, while limt! 1 R(t) = 1 in the case KR = 0.
A new proof of the discrete-time LQG optimal control theorems

Presents a unifying new proof for the three discrete-time linear quadratic Gaussian problems (deterministic, stochastic full information, and stochastic partial information) based on pathwise (deterministic) optimization. The essential difference between the control aspect of the three cases is that the controls should lie in different classes of "admissible controls", and the authors address them as constrained optimization problems using appropriate Lagrange multiplier terms. >
Modeling of ultrabroadband and single-cycle phenomena in anisotropic quadratic crystals

We present a comprehensive model to describe the propagation of single-cycle and broadband optical pulses in anisotropic, dispersive, and nonlinear materials. Two nonlinear coupled wave equations describe the dynamics and interactions of optical pulses in uniaxial second-order nonlinear materials. The equations are first order in the propagation coordinate and are valid for arbitrarily wide pulse bandwidth, providing an accurate modeling of the evolution of ultrabroadband pulses also when the separation into different coupled frequency components is not possible or not profitable. We exploit this model to simulate recently observed femtosecond single-cycle multiterahertz transients in gallium selenide and to predict harmonic generation and spectral broadening in the visible and mid-infrared in lithium niobate.
On the Role of Large-Scale Transient Eddies in the Maintenance of the Vorticity and Enstrophy of the Time-Mean Atmospheric Flow

Abstract The global distribution of the forcing of the time-mean flow due to large-scale, horizontal Reynolds stresses (u′ u′, v′ v′, u′ v′) is determined from upper wind statistics for the period 1968–73. The role of this forcing in the maintenance of the vorticity and enstrophy of the time-mean flow is discussed. The most striking effect of transient eddy stresses is the tendency to shift the subtropical maxima in the time-mean flow and the associated vorticity patterns poleward. However, significant longitudinal Variations in forcing occur, also. Calculations of the dominant terms in vorticity budgets of the North Pacific Low, the North Atlantic Low, and the Siberian High, which may he called the centers of action of winter-time circulation at sea level in the Northern Hemisphere, are presented. In all three cases, transient eddies are found to be important in maintaining the centers against the dissipative action of surface friction. In terms of the enstrophy budget, the hemispheric and global-mean ef.
Design of the optical fibers for differential mode delay compensation

We introduce a method for differential mode delay (DMD) compensation by using a special silica GeO2-doped graded-index multimode optical fiber, which provides a reverse reproducing of mode group velocity diagram of the target fiber, and algorithm for design it. Results of proposed method approbation for synthesis of DMD compensation fiber for OM2+/OM3 category target multimode fiber under both central and overfilled launch conditions are represented.
Duality for base-changing morphisms of vector bundles, modules, Lie algebroids and Poisson structures

Abstract The main result of this paper is an extension to Poisson bundles [4] and Lie algebroids of the classical result that a linear map of Lie algebras is a morphism of Lie algebras if and only if its dual is a Poisson morphism. In formulating this extension we introduce a second class of structural maps for vector bundles, which we call comorphisms, alongside the standard morphisms, and we further show that this concept of comorphism, in conjunction with a corresponding concept for modules, allows one to extend to arbitrary base-changing morphisms of arbitrary vector bundles the familiar duality and section functors which are normally denned only in the base-preserving case.
Effects of a Velocity-Based Complex Training Program in Young Female Artistic Roller Skating Athletes

Complex training consists of a near maximal strength effort followed by a biomechanically similar explosive exercise. One of many complex training methods that have been proposed is the French Contrast Method. The aim of this study was to analyze the effects of the French Contrast Method on maximal strength and power of young female artistic roller skating athletes with the help of velocity-based training to prescribe the intervention program. Eighteen female artistic roller skating athletes, divided into an experimental group (EG) and a control group (CG), participated in this study. The EG performed complex training via the French Contrast Method. The CG did not perform any additional training besides their regular roller skating practices. All participants were tested on the 1-RM back squat and hip thrust, the load-velocity profile assessment of both exercises previously stated, the countermovement jump, and the drop jump. A significant increase in mean concentric velocity (MCV) of the hip thrust exercise from 10 to 60% of 1-RM in the EG was observed. Significant differences between groups were observed for the MCV of the hip thrust from 10 to 90% of 1-RM. There were also significant increases in the 1-RM back squat and 1-RM hip thrust over time in the EG. For the vertical jump variables, there were significant differences between groups for both contact time and the reactive strength index with and without an arm swing. The results of this study suggest that a 6-week training intervention with the use of the French Contrast Method can significantly improve maximal strength and power.
Circuits arithmétiques et calculs tensoriels

Abstract The classes in Valiant's theory are classes of polynomials defined by arithmetic circuits. We characterize them by different notions of tensor calculus, in the vein of Damm, Holzer and McKenzie. This characterization underlines in particular the role played by properties of parallelization in these classes. We also give a first natural complete sequence for the class VPnb, the analogue of the class P in this context.
Biodentine™ Pulpotomy in Stage I primary Molars: A 12-month Follow-up

Abstract Aim This study aims to evaluate, over 12 months of clinical and radiographic follow-ups, the performance and outcomes of Biodentine™ pulpotomy in stage I primary molars. Materials and methods A total number of 20 stage I primary molars requiring pulpotomy were selected from eight healthy patients aged between 34 and 45 months. Patients presenting a negative attitude toward dental treatment on the dental chair were scheduled for dental treatments under general anesthesia. Pulpotomy with Biodentine™ as a pulp-dressing material was performed on all selected molars. The patients were called back at 1 and 3 months for clinical follow-ups, then at 6 and 12 months for clinical and radiographic follow-ups. Data were tabulated according to follow-up intervals and occurrence of any changes in root maturation, pulp canal obliteration (PCO), periodontal ligament space (PLS), and bone or root lesion. Results No statistically significant differences were recorded at 1, 3, 6, and 12 months. There was a statistically significant increase in number of roots with closed apices from six roots at 6 months to 50 roots at 12 months (p < 0.0005) and the PCO was present in all 50 roots at 12 months, after it was present in 36 roots only at 6 months (p = 0.0001). Conclusion This is the first randomized clinical trial that evaluates the performance of Biodentine™ as a pulp-dressing agent in stage I primary molar pulpotomy over 12 months of follow-up. Contrary to previous studies, the present work highlights the continued root formation and apical closure (AC) in pulpotomized immature primary molars. How to cite this article Nasrallah H, Noueiri BE. Biodentine™ Pulpotomy in Stage I primary Molars: A 12-month Follow-up. Int J Clin Pediatr Dent 2022;15(6):660-666.
Chinese High-Tech Export Performance: Effects of Intellectual Capital Mediated by Dynamic and Risk Management Capabilities

This study analyzed the effect of intellectual capital on Chinese exporters’ performance and the joint mediating effect of two-way capabilities to explain the relationships. With a sample of 197 firms responsible for exporting Chinese high-tech products, we empirically evaluated higher-order constructs in a partial least squares structural equation model using a two-stage approach. The results show that firms’ intellectual capital generates dynamic capabilities, which lead human, structural, and relational capital to improve overseas export performance. Furthermore, the study shows risk management capability also has a complementary mediating role in improving overseas export performance. These findings point to the significant role of two-way capabilities, clarifying how risk management capabilities can be used to enhance export performance and highlighting the role of dynamic capabilities in leveraging export performance. Our findings hold managerial implications on how Chinese high-tech exporting businesses adapt to fast-changing environments.
Instabilities of magnetically induced shear layers and jets

We investigate numerically the flow of an electrically conducting fluid confined in a spherical shell, with the inner sphere rotating, the outer sphere stationary, and a strong magnetic field imposed parallel to the axis of rotation. It has previously been shown that the axisymmetric basic state depends strongly on the electromagnetic boundary conditions used, with insulating boundaries yielding a shear layer, but conducting boundaries yielding a counter–rotating jet, where in both cases these structures are located on the cylinder parallel to the imposed field and tangent to the inner sphere. Here we compute the non–axisymmetric instabilities of these basic states, and show that for sufficiently large rotation rates both the shear layer and the jet spawn a series of vortices encircling the tangent cylinder. Finally, we consider the fully three–dimensional nonlinear equilibration, and show that in the supercritical regime a secondary bifurcation occurs in which the number of vortices (for the shear layer) or vortex pairs (for the jet) is reduced by one.
Perennial herb diversity contributes more than annual herb diversity to multifunctionality in dryland ecosystems of North-western China

Background Considerable attention has been given to how different aspects of biodiversity sustain ecosystem functions. Herbs are a critical component of the plant community of dryland ecosystems, but the importance of different life form groups of herbs is often overlooked in experiments on biodiversity-ecosystem multifunctionality. Hence, little is known about how the multiple attributes of diversity of different life form groups of herbs affect changes to the multifunctionality of ecosystems. Methods We investigated geographic patterns of herb diversity and ecosystem multifunctionality along a precipitation gradient of 2100 km in Northwest China, and assessed the taxonomic, phylogenetic and functional attributes of different life form groups of herbs on the multifunctionality. Results We found that subordinate (richness effect) species of annual herbs and dominant (mass ratio effect) species of perennial herbs were crucial for driving multifunctionality. Most importantly, the multiple attributes (taxonomic, phylogenetic and functional) of herb diversity enhanced the multifunctionality. The functional diversity of herbs provided greater explanatory power than did taxonomic and phylogenetic diversity. In addition, the multiple attribute diversity of perennial herbs contributed more than annual herbs to multifunctionality. Conclusions Our findings provide insights into previously neglected mechanisms by which the diversity of different life form groups of herbs affect ecosystem multifunctionality. These results provide a comprehensive understanding of the relationship between biodiversity and multifunctionality, and will ultimately contribute to multifunctional conservation and restoration programs in dryland ecosystems.
Towards unlocking the chain of sustainable development in the BRICS economies: Analysing the role of economic complexity and financial risk

In response to the mounting risks posed by climate change, innovation and mitigation of pollution have emerged as key drivers of sustainable growth and the environment. This research aims to explore the effect of economic complexity and financial risk on the load capacity factor. The research employed a series of second‐generation techniques such as a method of moment quantile regression and Dumitrescu Hurlin panel causality covering the period between 1990 and 2018. The findings provided convincing evidence of cointegration. The long‐run analysis showed that renewable energy use, economic complexity and financial risk contribute to ecological quality. However, non‐renewable energy and economic progress threaten ecological quality by lessening the load capacity factor. The research revealed causality from financial risk, economic growth, disintegrated energy and economic complexity to load capacity factor. Lastly, a policy framework is proposed based on the study findings to accomplish the sustainable development goals (SDGs) 7, 13 and 17.
Flatness and Fibred Powers over Smooth Varieties

Abstract We prove the equivalence between flatness of a complex algebraic map to a smooth variety of dimension n and torsion freeness of its n th fibered power, under the assumption that the source space is of pure dimension. This generalizes the corresponding result for finite maps due to Auslander and proves a conjecture of Vasconcelos for a large class of objects. We develop several constructions in local analytic geometry and commutative algebra useful for our proof.
Information disclosure, consumer returns, and operational costs in omnichannel retailing

In the online retailing, consumers are commonly uncertain about the product's quality and fitness. To resolve these uncertainties, many pure e‐tailers adopt various omnichannel strategies to provide tactile product information for consumers. We build a model to investigate a pure e‐tailer's decision on whether to adopt an omnichannel strategy. Our result indicates that when the cost for each physical store is sufficiently low, the e‐tailer always adopts the omnichannel strategy regardless of the product quality. Moreover, the low‐quality e‐tailer's willingness to adopt the omnichannel strategy is nonmonotonic with the fitness probability when the travel cost factor is high. In contrast, if the cost for each physical store is moderate, the e‐tailer adopts the omnichannel strategy if and only if the product quality is above a threshold. The quality threshold may increase with the fitness probability. Higher fitness probability means a lower return rate and fewer benefits brought by the omnichannel strategy. Thus, the threshold of the quality is increased to guarantee a sufficiently large price increase when choosing the omnichannel strategy. Furthermore, when the cost for each physical store is high, the e‐tailer with a high‐quality product would abandon the omnichannel strategy if the fitness probability is moderate. Finally, we consider the scenarios in which the e‐tailer can endogenously determine the number of physical stores or provide a partial refund policy.