Thermochemical Laser-Induced Periodic Surface Structures Formation by Femtosecond Laser on Hf Thin Films in Air and Vacuum

Thermochemical laser-induced periodic surface structures (TLIPSS) are a relatively new type of periodic structures formed in the focal area of linear polarized laser radiation by the thermally stimulated reaction of oxidation. The high regularity of the structures and the possibility of forming high-ordered structures over a large area open up possibilities for the practical application for changing the optical and physical properties of materials surface. Since the mechanism of formation of these structures is based on a chemical oxidation reaction, an intriguing question involves the influence of air pressure on the quality of structure formation. This paper presents the results on the TLIPSS formation on a thin hafnium film with fs IR laser radiation at various ambient air pressures from 4 Torr to 760 Torr. Despite the decrease in the oxygen content in the ambient environment by two orders of magnitude, the formation of high-ordered TLIPSS (dispersion in the LIPSS orientation angle δθ < 5°) with a period of ≈700 nm occurs within a wide range of parameters variation (laser power, scanning speed). This behavior of TLIPSS formation is in agreement with experimental data obtained earlier on the study of the kinetics of high-temperature oxidation of hafnium at various oxygen pressures.

The combining ability of self-pollinated lines of the red beet(Beta vulgaris L)

The proper choice of starting material determines the results of the selection. If the starting forms of plants are not fit for crossing and do not match the goals set or the soil and climate conditions available, any selection work may prove futile. The creation of new starting material is based on the study of the existing varieties and the selection of the best biotypes, as well as the assessment of a set of biological and economically valuable parameters of breeding. Inbreeding is the most widely used method of obtaining new starting material, especially homozygous lines, and it plays a key role in heterosis selection programs for the majority of agricultural crops. The use of beet heterosis allows for a significant increase in homogeneity, quality, and marketability of the produce. In 2018-2020, nine samples of red beet starting material were assessed. Using the polycross methods, we assessed the general combining ability of self-pollinated red beet lines across the parameters determining the commercial properties of this root crop: the proportion of the root crop top in its diameter, the share of leaves in the plant biomass, and regularity of shape and marketability. The subject matter of this work is the lines of red beet with round root crops. Research material includes the raw data from field measurements and records. We used the Kestrel F1 hybrid variety released for Central Russia. Field tests were carried out using the uniform procedures set out by the All-Russian Horticultural Research Institute - a branch of the Federal Research Center for Horticulture from Moscow Oblast. At the experimental locations, we used the agricultural practices typical of the region. Using the properties - the small proportion of the root crop top (42.1-47%) and the share of leaves in the biomass (24.1-27.5%), high regularity of root crop shape (up to 85.6%), and marketability (88.3-95.9%) - we determined the following lines: 506 I2, 507 I2.

Contribution of Asian emissions to upper tropospheric CO over the remote Pacific

We use CO data from the MOPITT satellite instrument from 2000–2019 to compose a climatology of severe pollution events in the mid- and upper troposphere over the northern-hemispheric (NH-) Pacific. To link each individual pollution event detected by MOPITT with a CO source region, we performed trajectory calculations using MPTRAC, a lagrangian transport model. To analyse transport pathways and uplift mechanisms we combine MOPITT data, the trajectory calculations and ERA-Interim reanalysis data. Events of elevated CO which we detect at level between 500 hPa and 300 hPa over the NH-Pacific throughout the year, occur with a surprisingly high regularity and frequency (70 % of all days during winter, 80 % respectively during spring). Our study further indicates, that the spatial coverage of individual upper tropospheric pollution cluster increased in spring time during the 20 years we analysed. The position of upper tropospheric pollution plumes show a strong seasonal cycle. During winter, most pollution events are detected over the north-eastern and central NH-Pacific, during spring over the central NH-Pacific and during summer over the western NH-Pacific. We detect most pollution episodes during spring. Trajectory simulations reveal China as the major CO-source region throughout the year. The contribution of other source regions shows a strong seasonal cycle: NE-Asia is a significant CO-source region during winter and summer while India and SE-Asia are important source regions mainly during spring.

Global well-posedness and long-time behavior of the fractional NLS

In this paper, our discussion mainly focuses on equations with energy supercritical nonlinearities. We establish probabilistic global well-posedness (GWP) results for the cubic Schrödinger equation with any fractional power of the Laplacian in all dimensions. We consider both low and high regularities in the radial setting, in dimension $$\ge 2$$ ≥ 2 . In the high regularity result, an Inviscid - Infinite dimensional (IID) limit is employed while in the low regularity global well-posedness result, we make use of the Skorokhod representation theorem. The IID limit is presented in details as an independent approach that applies to a wide range of Hamiltonian PDEs. Moreover we discuss the adaptation to the periodic settings, in any dimension, for smooth regularities.

Relationships between Employees’ Identifications and Citizenship Behavior in Work Groups: The Role of the Regularity and Intensity of Interactions

This paper explores the relationships of various employees’ identifications (personal, interpersonal, micro-group, group and organizational) in their two components (cognitive and affective) with two dimensions of organizational citizenship behavior (OCB): offering quality ideas and suggestions, and providing help and support within small work groups. Two studies were conducted in Russia on two respective samples: (1) employees of commercial enterprises (N = 183) characterized by a relatively high regularity and intensity of within-group interactions; and (2) the academic staff of higher education institutions (N = 157), which typically have relatively less regular, low-intensity within-group interactions. The research employed four questionnaires to assess the participants’ identifications in both of their components. In addition, managers in the respective organizations filled out an organizational communicativeness questionnaire and a two-factor OCB assessment instrument. It was found that the relationships between (a) particular identifications and (b) the ratio of group identification to other identifications, on the one hand, and OCB, on the other, depend on the degree of regularity of within-group interactions, as well as on the identification components. Organizational communicativeness did not moderate the relationship between identifications and OCB, but was significantly positively correlated with both OCB dimensions. The theoretical and practical implications of the study findings are discussed.

On the topological enrichment for crack modeling via the generalized/extended FEM: a novel discussion considering smooth partitions of unity

Purpose It has been usual to prefer an enrichment pattern independent of the mesh when applying singular functions in the generalized/eXtended finite element method (G/XFEM). This choice, when modeling crack tip singularities through extrinsic enrichment, has been understood as the only way to surpass the typical poor convergence rate obtained with the finite element method (FEM), on uniform or quasi-uniform meshes conforming to the crack. Herein, the topological enrichment pattern is revisited in the light of a higher-order continuity obtained with a smooth partition of unity (PoU). Aiming to verify the smoothness' impacts on the blending phenomenon, a series of numerical experiments is conceived to compare the two GFEM versions: the conventional one, based on piecewise continuous PoU's, and another which considers PoU's with high-regularity. Design/methodology/approach The stress approximations right at the crack tip vicinity are qualified by focusing on crack severity parameters. For this purpose, the material forces method originated from the configurational mechanics is used. Some attempts to improve solution using different polynomial enrichment schemes, besides the singular one, are discussed aiming to verify the transition/blending effects. A classical two-dimensional problem of the linear elastic fracture mechanics (LEFM) is solved, considering the pure Mode I and the mixed-mode loading. Findings The results reveal that, in the presence of smooth PoU's, the topological enrichment can still be considered as a suitable strategy for extrinsic enrichment. First, because such an enrichment pattern still can treat the crack independently of the mesh and deliver some advantage in terms of convergence rates, under certain conditions, when compared to the conventional FEM. Second, because the topological pattern demands fewer degrees of freedom and impacts conditioning less than the geometrical strategy. Originality/value Several outputs are presented, considering estimations for the J–integral and the angle of probable crack advance, this last computed from two different strategies to monitoring blending/transition effects, besides some comments about conditioning. Both h- and p-behaviors are displayed to allow a discussion from different points of view concerning the topological enrichment in smooth GFEM.

The story of two connectives: Korean tunci ‘or’ and kena ‘or’

Using 129 natural conversations and 185 episodes of television drama conversations as well as the theoretical frameworks of usage-based theory and grammaticalization, I investigate two forms of ‘or’ in Korean, tunci and kena. Generally believed to be largely interchangeable, these two forms’ actual usages have never been compared. I demonstrate that the two are selectively used in conversation, and propose that three types of factor influence the selection. The first factors are genre and setting. In formal settings and formal descriptive writing, kena is preferred. The second factor is the presence of negative markers: while 43% of kena tokens were used in negative sentences, only one token of tunci was. The third factor is the distinction between ‘propositive’ tunci and ‘descriptive’ kena. In conversation, tunci occurs mainly in making suggestions and presenting plans, and hence is oriented toward the future tense and the irrealis domain. Kena occurs mainly in describing present and past situations, facts, or premises, and hence is oriented toward the present and past tense and the realis domain. This study confirms the usage-based theory’s argument that speakers possess extensive procedural knowledge of language: Korean speakers may not be conscious of it, but they differentiate tunci and kena with high regularity. Lastly, I explain their differences based on their history. The older form, kena, dates back to the 8th century, whereas tunci became widespread only in the 19th century. Because tunci retains its original semantics of probability, tunci tends to occur in presenting suggestions and plans (irrealis) and not in factual descriptions.

Determination of the optimal number of evaluations in half-sib progenies of kale by Bayesian approach

ABSTRACT Kale has a long vegetative cycle, requiring a lot of labor, due to the need for tutoring, thinning and multiple harvests, leading to difficulties in the maintenance and evaluation of experiments. Thus, the objective was to estimate the minimum number of evaluations for the assertive selection of half-sib progenies of kale by means of a repeatability study by Bayesian approach. Twenty four half-sib progenies were evaluated in a randomized block design with four replicates and five plants per plot. The number of shoots, number of marketable leaves, fresh mass of marketable leaves and fresh mass per leaf were measured throughout 15 harvests. All traits showed high estimates of the repeatability, indicating high regularity in the expression of the traits during the harvesting period. With eight harvests it is possible to evaluate all the traits with a coefficient of determination superior to 85% in half-sib progenies of kale.

Productive and adaptive potentials of Renet Simirenko variety on rootstocks with different growth rates in arid conditions

This article presents the results of the economic and biological assessment of the Renet Simirenko variety grown on rootstocks of different growth rates under conditions of insufficient moisture and high thermal stress in the arid zone of the Northern Caspian region. The purpose of the research is to study and identify scion-rootstock combinations of the Renet Simirenko variety, which most fully realize the potential of productivity, early maturity, and resistance to unfavorable environmental factors. Studied variety grew more intensively on dwarf rootstocks (SK4, SK7), semi-dwarf (SK2, SK5), and average height 54-118, restrained growth of tree-holes was provided by dwarf rootstocks SK3, P16, P59, P60. In most combinations of dwarf and semi-dwarf rootstocks, flowering began in the year of planting, fruiting - in the second year of garden growth, which indicates the potential of early maturity. Rootstocks SK3, SK4, SK2, and 54-118 provided the maximum average and total yield of marketable fruiting in comparison with the control for 7 years. In the Astrakhan region, it is advisable to grow the Renet Simirenko variety on low-growing rootstocks SK3, SK4, SK2, and average growth 54-118, the most resistant to the destabilizing factors of the climate of the arid zone and providing high regularity.

Concurrent Ternary Galois-based Computation using Nano-apex Multiplexing Nibs of Regular Three-dimensional Networks, Part I: Basics

New implementations within concurrent processing using three-dimensional lattice networks via nano carbon-based field emission controlled-switching is introduced in this article. The introduced nano-based three-dimensional networks utilize recent findings in nano-apex field emission to implement the concurrent functionality of lattice networks. The concurrent implementation of ternary Galois functions using nano threedimensional lattice networks is performed by using carbon field-emission switching devices via nano-apex carbon fibers and nanotubes. The presented work in this part of the article presents important basic background and fundamentals with regards to lattice computing and carbon field-emission that will be utilized within the follow-up works in the second and third parts of the article. The introduced nano-based three-dimensional lattice implementations form new and important directions within three-dimensional design in nanotechnologies that require optimal specifications of high regularity, predictable timing, high testability, fault localization, self-repair, minimum size, and minimum power consumption.