Repozytorium Uniwersytetu Śląskiego RE-BUŚ
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Invariant vector means and complementability of Banach spaces in their second duals
Get PDFLet X be a Banach space. Fix a torsion-free commutative and cancellative semigroup S whose torsion-free rank is the same as the density of X∗∗. We then show that X is complemented in X∗∗ if and only if there exists an invariant mean M:ℓ∞(S,X)→X. This improves upon previous results due to Bustos Domecq (J Math Anal Appl 275(2):512–520, 2002), Kania (J Math Anal Appl 445:797–802, 2017), Goucher and Kania (Studia Math 260:91–101, 2021)
Plant cell and organism development 2.0
Get PDF"In the editorial summarising the first edition of the Special Issue on “Plant Cell and
Organism Development”, we listed the key features that make plants a unique and fascinating
group of living organisms [1]. However, current climate changes are affecting plants
in their natural environments and those that are under cultivation. Global warming will
likely redefine many plant habitats regarding temperature, water availability, soil erosion,
salinity and other abiotic and biotic parameters. The ever-growing human population and
increasing food demand require more extensive or more efficient agriculture, all within the
limited capacity of our planet. For those and many other reasons, comprehensive research
on plants has become more vital than ever." [...] (fragm.
Development of Digital Literacy – Translanguaging and Transmedia Note Taking Formats for Academic Reading
No full textGenerative note taking, being one of the strategies applied to manage difficult texts, requires
not only comprehension and selection of information but also production. The current
study focuses on note taking formats for a text read with the intention to summarize. Its focal
aim is to improve both practical and theoretical understanding of this activity. It involves the
investigation into note taking behaviors of 103 second-year English Department students, how
they, as readers of FL, engage with complex texts, how they were instructed in note taking
and what note taking strategies they employ for comprehending academic texts.
The analysis of the collected data attempts to identify how readers’ (n = 103) translanguaging
and transmedia (n = 103) note taking formats help increase their engagement in
and access to difficult texts in L2. It shows that the subjects have not transitioned from the
paper interface to the digital one, since they still display the screen inferiority effect in their
reading habits. The collected data shows that only some subjects (n = 42/103) received some
form of instruction in paper note taking techniques or digital applications facilitating note
taking. The students were not able to enumerate more than four note taking applications
which would be conducive to their formation of a coherent interpretation of the digital text
they read.
The author contends that overt note taking instruction in both paper and digital mode
will create avenues for encouraging, interacting and engaging in reading. Instruction in that
field needs to be modified with regard to digital note taking/annotating tools to make use of
the note taking formats available for processing digitally interfaced texts
Czy i jak udało nam się aż tak spartolić. Nauki płynące z pandemii
No full text"Pandemia COVID-19, podobnie jak inne ekstremalne sytuacje, obnażyła słabości
i mentalne problemy, z którymi zmagają się pojedynczy ludzie i społeczności.
Obiektywnym wskaźnikiem jest poziom wyszczepienia społeczeństwa Polski (zaledwie
50 procent), niski jak na kraj europejski i regionalnie znacząco zróżnicowany – z najgorzej
wypadającą historyczną Galicją i ścianą wschodnią. Wiążą się z tym antynaukowe i aspołeczne
postawy i zachowania wyrażające się niewiarą w pandemię, nieprzestrzeganiem
zasad higieny publicznej i ruchami antyszczepionkowymi. Jak każda skrajna sytuacja pandemia
ujawniła też postawy amoralne. Bulwersują przypadki agresji wobec osób zwracających
uwagę na przestrzeganie zasad higieny epidemicznej. Trudno pojąć zapał atakujących
punkty szczepień. Kryminalną patologią jest hejt i grożenie śmiercią lekarzom
propagującym i wykonującym szczepienia. Zjawisko ma szerszy wymiar w odniesieniu
do wielu wyzwań – globalnego ocieplenia, energetyki węglowej, budowy spalarni śmieci,
tworzenia ośrodków dla chorych na AIDS, kontroli urodzin i edukacji seksualnej, migracji,
organizmów modyfikowanych genetycznie (GMO) i wielu innych. Jest to zarazem przejaw
zaprzeczania osiągnięciom i wskazaniom nauki." (fragm.
Application of the HYSPLIT model for birch pollen modelling in Poland
Get PDFIn this work, the HYSPLIT model was used to reproduce birch pollen concentrations in Poland for the years 2015 and 2016, where there was significant variation in terms of pollen concentrations and start/end dates of the pollen season. The analysis of pollen observations showed that the seasonal pollen integral (SPIn) was low in 2015 with a shorter season compared to 2016. In 2016, SPIn was unusually high. The HYSPLIT model simulation, with a one-hour temporal resolution, was conducted during the birch pollen season (from March to May) for 2015 and 2016. Meteorological data were obtained from the WRF model. The birch coverage map of the European Forest Institute was used. The emission, introduced to the model, covered Central Europe with a resolution of 0.3° × 0.3°. The results were compared to data from 11 observation stations in Poland. The measured birch pollen concentrations for 2015 were overestimated by HYSPLIT at 8 of the 11 stations (normalized mean bias/NMB from 0.13 to 2.53) and underestimated for three stations (NMB from − 0.44 to − 0.15). For 2016, the model highly underestimated the pollen concentrations, with NMB ranging from − 0.45 to − 0.93. In general, the results show that the model can resolve the main peaks of pollen concentrations, which is a step forward in the application of the HYSPLIT model for birch pollen forecasting over Poland. We suggest the application of methods that can reduce the bias of temperature such as meteorological data assimilation or bias correction, which could improve calculation of the start of emissions and consequently the start of the pollen season as well as pollen concentrations
Vis and NIR Diffuse Reflectance Study in Disordered Bismuth Manganate - Lead Titanate Ceramics
Get PDFThis work shows a correlation between light reflectance, absorption, and morphologies of
series of bismuth manganate–lead titanate, (1 x) BM–x PT, (x = 0.00, 0.02, 0.04, 0.08, 0.12, 0.16, 0.24,
1.00) ceramics composite. Low reflectance in the Vis-NIR range corresponds to ‘black mirror’ features.
The modified Kubelka-Munk function applied to measured visible-near infrared (Vis-NIR) diffuse
reflectance enabled the estimation of the energy gaps magnitude of the order of 1.0–1.2 eV for BM-PT.
Histograms of grains, obtained using a scanning electron microscope, enabled finding the correlation
between grains size, reflectance magnitude, and PT content. The magnitude of energy gaps was
attributed to electronic structure bands modified by crystal lattice disorder and oxygen vacancies
CO2 - A Crisis or Novel Functionalization Opportunity?
Get PDFThe growing emission of carbon dioxide (CO2), combined with its ecotoxicity, is the reason
for the intensification of research on the new technology of CO2 management. Currently, it is believed
that it is not possible to eliminate whole CO2 emissions. However, a sustainable balance sheet is
possible. The solution is technologies that use carbon dioxide as a raw material. Many of these
methods are based on CO2 methanation, for example, projects such as Power-to-Gas, production
of fuels, or polymers. This article presents the concept of using CO2 as a raw material, the catalytic
conversion of carbon dioxide to methane, and consideration on CO2 methanation catalysts and
their design
Philosophy of values in leadership coaching: leader in selected types of leadership
Get PDFPurpose: The focus of this article is on the axiology of leadership, which is a description of the guiding values and characteristics of a leader, including innovation, growth, skilful direction-setting, listening and attentiveness, proactive empowerment, accountability, judgment, and persuasion. Design/methodology/approach: The article uses the method of comparative-descriptive analysis. In this article, I characterize the different types of leadership including its strategic, activating, operational and forcing form. Findings: I refer to the scientific theory of authorities in the field of organizational management and leadership coaching by Owen, Krupp, Schoemaker, as well as Kaplan and Kaiser; for comparison, I also include Sieraczkiewicz’s leadership typology. Unconsciously, however, the leader’s qualities/attributes, when abused, can become the greatest obstacle and disadvantage, which not only thwarts all the efforts of the team, but also makes the leader-head of that team ineffective. Research limitations/implications: The text takes up issues related to the problem of development and self-development in the field of business. Practical implications: The paper concerns the development of an individual, leader and his team in the professional and private sphere. Text will be interest broadly understood business. Social implications: Unconsciously, however, the leader’s qualities/attributes, when abused, can become the greatest obstacle and disadvantage, which not only thwarts all the efforts of the team, but also makes the leader-head of that team ineffective. Originality/value: Originality of the article is confirmed by the description of basic features/values that every contemporary leader should cultivate. Characteristic feature of the contemporary leader is his versatility and the related axiological pluralis
Production and Characterization of the Third-Generation Oxide Nanotubes on Ti-13Zr-13Nb Alloy
Get PDFIn the group of vanadium-free titanium alloys used for applications for long-term implants, the Ti-13Zr-13Nb alloy has recently been proposed. The production of a porous layer of oxide nanotubes (ONTs) with a wide range of geometries and lengths on the Ti-13Zr-13Nb alloy surface can increase its osteoinductive properties and enable intelligent drug delivery. This work concerns developing a method of electrochemical modification of the Ti-13Zr-13Nb alloy surface to obtain third-generation ONTs. The effect of the anodizing voltage on the microstructure and thickness of the obtained oxide layers was conducted in 1 M C2H6O2 + 4 wt% NH4F electrolyte in the voltage range 5–35 V for 120 min at room temperature. The obtained third-generation ONTs were characterized using SEM, EDS, SKP, and 2D roughness profiles methods. The preliminary assessment
of corrosion resistance carried out in accelerated corrosion tests in the artificial atmosphere showed the high quality of the newly developed ONTs and the slight influence of neutral salt spray on their micromechanical properties
Gaston Bachelard, le « non-psychanalyste »
Get PDFLes rapports de la philosophie de Gaston Bachelard à la psychanalyse peuvent
être qualifiés de variables, voire de turbulents. Les points communs et les ruptures,
les départs et les retours, les critiques et les reformulations des concepts-source liés
à l’attitude ambiguë qu’avait Bachelard envers la psychanalyse, chevauchaient les
changements déjà inscrits dans sa philosophie. Il faut rajouter l’importance de la
diversification des propositions théoriques et méthodologiques qui ont surgi dans
le mouvement psychanalytique au sens large [...]