The Beta Cephei instability domain for the new solar composition and with new OP opacities

The recent revision of the solar chemical composition (Asplund, Grevesse and Sauval 2005)is characterized by about 40 per cent decrease of C, N, O, Ne, Ar abundances and by 20 percent decrease of Fe and some other metal abundances. We tested the effect of these modifications on the instability of Beta Cephei models. For the opacities, the newest OP data from the Opacity Project (Seaton 2005) were used. We show that the Beta Cephei instability domain in the Hertzsprung-Russel diagram, when computed with new data for Z=0.012 (revised solar value), is very similar to the instability domain computed earlier using the OPAL opacities for the older solar composition with Z=0.02. Almost all observed Beta Cephei variables are located within the instability domain. Two effects are responsible for stronger instability when using the new data: (i) Metal opacity bump in the OP case is located slightly deeper in the star than that in the OPAL case, which results in more effective driving; (ii) at a fixed Z value, the new Fe-group abundances are higher than the older ones because the Z value is determined mainly by the abundances of C, N, 0, and Ne.Comment: 2 pages, 2 figures, to appear in Communications in Asteroseismology, vol.150, 2007 (Proc. Vienna Workshop on the Future of Asteroseismology, held in Vienna, Sept. 20-22, 2006, eds. G. Handler and G. Houdek

A History of Spanish Golden Age Drama

Spain\u27s Golden Age, the seventeenth century, left the world one great legacy, the flower of its dramatic genius—the comedia. The work of the Golden Age playwrights represents the largest combined body of dramatic literature from a single historical period, comparable in magnitude to classical tragedy and comedy, to Elizabethan drama, and to French neoclassical theater. A History of Spanish Golden Age Drama is the first up-to-date survey of the history of the comedia, with special emphasis on critical approaches developed during the past ten years. A history of the comedia necessarily focuses on the work of Lope de Vega and Calderon de la Barca, but Ziomek also gives full credit to the host of lesser dramatists who followed in the paths blazed by Lope and Calderon, and whose individual contributions to particular genres added to the richness of Spanish theater. He also examines the profound influence of the comedia on the literature of other cultures. Henryk Ziomek is professor of Spanish at the University of Georgia.https://uknowledge.uky.edu/upk_spanish_literature/1020/thumbnail.jp

Motivation to work remotely in the face of organizational and cost conditions

Motivation: Working conditions have changed significantly as remote working has become widespread in many countries. These changes were caused by a pandemic, as a result of which the possibility of direct communication as well as control and integration of employees was limited. There are also new cost categories for employees and employers, such as installing a better internet connection, purchasing new hardware and software, and implementing better security for data transmission outside the company’s premises. These changes resulted in changes in the employee motivation factors against the background of organizational and cost conditions, which is important for the proper development of the organization.Aim: The aim of the article is to assess motivation to work remotely, based on a survey of opinions among 450 employees in total in Poland, the Czech Republic and Hungary. The assessment was performed by verifying, using the logistic regression method, ten hypotheses describing organizational and cost conditions as well as individual effects, such as career opportunities, increase in knowledge and skills, and the occurrence of stress that arose as a result of working remotely. The motivation to work remotely was verified by establishing the willingness to continue working through an opinion.Results: Motivation in remote work is influenced by both efficient communication and technical assistance provided to the employee remotely. Motivation resulting from the independent organization of working time is also important, and it is based on the decision to choose the duration of work, hours and intensity of its performance. Organizational and cost-related factors are related to motivation, as well as individual effects experienced by the employee. Directly from the survey, it appears that only 26.8% of the respondents incurred higher costs related to remote work during the COVID-19 pandemic. However, the respondents want to continue it with their current earnings. The study found that employees are motivated to work remotely because the organizational conditions and earnings meet their needs. They also admitted that thanks to remote work, they have a better chance of developing a professional career, as well as a higher level of their knowledge and skills, which is also associated with the motivation to continue working remotely

Motywy historiozoficzne w twórczości Fiodora Stiepuna

The aim of the article is to introduce the historiosophical views of Fyodor Stepun, one of the most prominent representatives of Russian emigration. In the 1920s, this thinker published a series of ten articles entitled Thoughts on Russia, which attempted to describe the Bolshevik revolution in the broadest possible sociocultural context. Thoughts on Russia are among the first texts interpreting the revolution in historiosophical terms

MODERNISMO: A COMPARATIVE STUDY

MODERNISMO: A COMPARATIVE STUD

When I\u27m With You

Everything I make is related to books. My artwork functions as visual storyboards or is used directly in books. Props and videos are inspiration for drawings. My paintings are meant to feel like pages from a larger narrative. Often, the formats through which stories are told are as important as the stories themselves

Investigation of the Shared and Divergent Anatomical Features of Fishes From the Suborder Characoidei

The order Characiformes is split into two major suborders; Characoidei and Citharinoidei, and includes over 2,000 different species of ray-finned fish, including a variety of Tetras often found in pet stores. Members are identified by the adipose fin, a small fin between the dorsal fin and tail. Of the ~1,800 species found in South America, ~1,100 are within the family Characidae (as defined by the lack of the supraorbital bone) with remaining species spread among 13 other families. Defining phylogenetic relationships among and within each family has proven to be challenging, as a result, the evolutionary relationships between these families and their proper classification remain unclear. This project involves investigating the major distinctive anatomical and morphological differences and similarities between three families of the suborder Characoidei; Characidae, Lebiasinidae, and Gasteropelecidae. A comparative analysis of adult anatomy and morphology was carried out using: (1) morphometric analysis, which utilizes technology, such as image analysis, to detect quantitative characteristics within groups, and (2) quantification of various meristic features of the skeletal anatomy following staining. This research has the intention of contributing knowledge to what is already existent in the efforts to clearly describe the relationship between these families in an anatomical manner

Linear systems theory and its relationship to ocean acoustics

The article of record as published may be found at https://doi: 10.1121/1.2028979The purpose of this talk is to demonstrate the consistency and relationships between linear systems theory and the physics of propagation of small‐amplitude acoustic signals in fluid media. Using the principles of linear, time‐variant, space‐variant filter theory and time‐domain and spatial‐domain Fourier transforms, derivations of the solutions of the linear, three‐dimensional, inhomogeneous wave equation for (1) an unbounded isospeed fluid medium, (2) and unbounded fluid medium with speed of sound an arbitrary function of depth, and (3) a full‐wave, pulse‐propagation model for three‐dimensional wave propagation in a Pekeris waveguide are presented. Characterizing a fluid medium as a linear filter is valid since this involves trying to solve the linear wave equation. Computer simulation results are presented.Work supported by ONR, Code1 1250 and the Naval Postgraduate Schoo