Location as a determinant of accommodation prices: managerial approach

In the presentation authors discuss the location-based factors’ impact on accommodation prices. The aim of the presentation is to compare the results of qualitative and quantitative research on location-based determinants of accommodation prices in Lodz Metropolitan Area (Poland). The authors employ methodological triangulation (Yeung 2000), both to explore statistical significance of location-based determinants of accommodation prices, and to present managerial opinions about the influence of location on accommodation prices.The research was financially supported by Polish Ministry of Science and Higher Education (Subsidy for young scientists No 545/392 and 545/915). The authors are grateful to the students of tourism and recreation program at University of Lodz, supporting data collection procedure and conducting in-depth interviews

Dust production scenarios in galaxies at z ~ 6-8.3

The mechanism of dust formation in galaxies at high redshift is still unknown. Asymptotic giant branch (AGB) stars and explosions of supernovae (SNe) are possible dust producers, and non-stellar processes may substantially contribute to dust production, for example grain growth in the interstellar medium (ISM). Our aim is to determine the contribution to dust production of AGB stars and SNe in nine galaxies at z ~ 6-8.3, for which observations of dust have been recently attempted. In order to determine the origin of the observed dust we have determined dust yields per AGB star and SN required to explain the total amounts of dust in these galaxies. We find that AGB stars were not able to produce the amounts of dust observed in the galaxies in our sample. In order to explain these dust masses, SNe would have to have maximum efficiency and not destroy the dust which they formed. Therefore, the observed amounts of dust in the galaxies in the early universe were formed either by efficient supernovae or by a non-stellar mechanism, for instance the grain growth in the interstellar medium.Comment: Accepted for publication in A&A, 5 pages, 1 figur

Personal trainer - occupational choices determinants

Fitness service market is currently dynamically growing in Poland. As a result fitness services portfolio is rapidly broadening and clients interest in that matter escalates as well, therefore personal trainers profession seemed to be a great opportunity of employment for fitness enthusiasts nowadays. The main purpose of this study was to identify personal trainers occupational choices as there is very little publications in the field. For that purpose diagnostic survey with individual in-depth interviews among working personal trainers was conducted. Respondents stated that among many determinants the most important were: highly profitable job, easy access to the profession in Poland, independence and flexibility, interpersonal relations with clients, work as a passion and further professional opportunities

Novel layers of RNA polymerase III control affecting tRNA gene transcription in eukaryotes

RNA polymerase III (Pol III) transcribes a limited set of short genes in eukaryotes producing abundant small RNAs, mostly tRNA. The originally defined yeast Pol III transcriptome appears to be expanding owing to the application of new methods. Also, several factors required for assembly and nuclear import of Pol III complex have been identified recently. Models of Pol III based on cryo-electron microscopy reconstructions of distinct Pol III conformations reveal unique features distinguishing Pol III from other polymerases. Novel concepts concerning Pol III functioning involve recruitment of general Pol III-specific transcription factors and distinctive mechanisms of transcription initiation, elongation and termination. Despite the short length of Pol III transcription units, mapping of transcriptionally active Pol III with nucleotide resolution has revealed strikingly uneven polymerase distribution along all genes. This may be related, at least in part, to the transcription factors bound at the internal promoter regions. Pol III uses also a specific negative regulator, Maf1, which binds to polymerase under stress conditions; however, a subset of Pol III genes is not controlled by Maf1. Among other RNA polymerases, Pol III machinery represents unique features related to a short transcript length and high transcription efficiency

Afgańscy migranci w Iranie. Sytuacja współczesna

For many decades Iran was a destination of economic immigration for Afghans. There, they could earn money to provide for their families at home. Since the Soviet intervention in Afghanistan in 1979, Iran also became a place of refuge for some 3 million Afghans. Their situation was changing according to the changes in the internal and international position of Iran. Sometimes the Iranian authorities were sympathetic; other times they were fiercely unsympathetic and keen to remove the Afghan "guests." So, the Afghans in Iran could not be sure how long they would be allowed to stay there, if the Iranians would be willing to support them, and if they would have work to provide for their families. This state of uncertainty of the Afghan community was worsened by an outbreak of the COVID-19 pandemic. Both the Iranian and Afghan healthcare systems are unable to effectively deal with the problem. And the economic collapse in Iran affected primarily the foreigners there of whatever stance, in this particular case, the Afghans. The main aim of the article is to present the changing and unstable situation of Afghans in Iran in recent years. The analysis covers areas such as their legal status, education, family life, or the right to work. It also takes into account, to a limited extent, the internal situation of Iran, which undoubtedly influenced the situation of Afghan migrants. Based on the analysis of the available materials, it can be concluded that the position of the Afghans in Iran was and is strongly dependent on the situation of Iran and the good or bad will of the Iranian authorities. At the same time, due to the complicated situation in Afghanistan, Afghan migrants find themselves in a hopeless situation and are "doomed" to stay in Iran.Od dziesięcioleci Iran był dla Afgańczyków państwem zapewniającym miejsce pracy. To właśnie tutaj Afgańczycy znajdowali możliwość zarobienia pieniędzy, za które byli w stanie utrzymać swoje rodziny w kraju. Od chwili radzieckiej interwencji w Afganistanie w 1979 r. Iran stał się również miejscem schronienia dla około 3 mln afgańskich uchodźców. Sytuacja afgańskich pracowników i uchodźców ulegała zmianie w zależności od sytuacji wewnętrznej, jak i międzynarodowej Iranu. Stosunek irańskich władz do nich bywał przychylny, by wkrótce zmienić się radykalnie w stronę niechęci i prób pozbycia się afgańskich "gości". Tym samym Afgańczycy w Iranie nie mogli być pewni, jak długo będą mieli prawo tam przebywać, na jaką pomoc ze strony Irańczyków liczyć oraz czy nadal będą mieć pracę pozwalającą im utrzymać rodziny. Stan niepewności społeczności afgańskiej jeszcze bardziej pogłębił wybuch pandemii COVID-19, gdyż ani irański, ani afgański system opieki zdrowotnej nie są w stanie sobie z nią poradzić, a wobec załamania gospodarczego w Iranie pierwszymi ofiarami stali się cudzoziemcy niezależnie od ich statusu - również Afgańczycy. Głównym celem artykułu jest przedstawienie zmieniającej się i niepewnej sytuacji Afgańczyków w Iranie w ostatnich latach. Analiza dotyczy takich obszarów, jak: status prawny, edukacja, życie rodzinne czy też prawo do pracy. Uwzględniono tutaj także, oczywiście w ograniczonym zakresie, sytuację wewnętrzną Iranu, która niewątpliwie wpływała na położenie afgańskich emigrantów. Na podstawie przeprowadzonej analizy dostępnych materiałów można stwierdzić, że położenie Afgańczyków w Iranie było i jest bardzo mocno uzależnione od sytuacji Iranu i dobrej lub złej woli irańskich władz. Jednocześnie, ze względu na skomplikowaną sytuację Afganistanu, afgańscy emigranci znajdują się w sytuacji bez wyjścia i są "skazani" na pobyt w Iranie