Repozytorium Uniwersytetu Śląskiego RE-BUŚ
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Precipitation Forecasting in Northern Bangladesh Using a Hybrid Machine Learning Model
Get PDFPrecipitation forecasting is essential for the assessment of several hydrological processes. This study shows that based on a machine learning approach, reliable models for precipitation prediction can be developed. The tropical monsoon-climate northern region of Bangladesh, including the Rangpur and Sylhet division, was chosen as the case study. Two machine learning algorithms were used: M5P and support vector regression. Moreover, a novel hybrid model based on the two algorithms was developed. The performance of prediction models was assessed by means of evaluation metrics and graphical representations. A sensitivity analysis was also carried out to assess the prediction accuracy as the number of exogenous inputs reduces and lag times increases. Overall, the hybrid model M5P-SVR led to the best predictions among used models in this study, with R2 values up to 0.87 and 0.92 for the stations of Rangpur and Sylhet, respectively
Continuities and Disruptions in Transhumance Practices in the Silesian Beskids (Poland): The Case of Koniaków Village
No full text"Transhumance is a phenomenon difficult to define, covering many different
practices, which are shaped by ecology and culture. It is a variety
of pastoralism, which is supplemented by land cultivation and trade. According
to Schuyler Jones (2005), it includes: rural settlement, land cultivation,
and periodic migration of people and animals between mountain
pastures. In 2004, Piotr Kohut, a resident of Koniaków, managed to bring
back to life a seemingly completely extinct institution of the pastoral community
in the area of the Silesian Beskids—the so-called sałasz. Sałasz is a
type of farming specific to the Carpathian area, which consists in setting
up shepherding companies in which a few or more sheep owners join
their flocks, placing them under the supervision of a baca (chief shepherd)
who is responsible for grazing of animals and shares proportionally the
benefits obtained from the milk. This communal grazing, which was associated
with certain cultural behaviors and the way of life, was a key determinant
of Carpathian pastoralism for many centuries, but economic and
political factors disturbed its functioning. After many years of interruption,
the sheep of local gazdas (owners, breeders) were merged together
into one flock again, which was tended by a collectively elected baca—a
head of the shepherding team—until the end of the pastoral season. This
event can be considered as the actual beginning of shepherding restitution
in the Cieszyn Silesia region." (fragm.
No nie mów! Słownik pragmatemów?! Rozważania nad leksykograficznym opisem wyrażeń pragmatycznych w ujęciu kontrastywnym (na przykładzie polskich ekwiwalentów francuskiego pragmatemu Tu m’en diras tant!
No full textThis article deals with the lexicographic description of pragmatemes in a contrastive approach. In the first part, the author briefly reviews definitions of the denomination “pragmateme” in Polish and French-language linguistic literature, finally opting for a prototypical understanding of this term. The following chapters are devoted to presenting the concept of the projected multilingual dictionary of pragmatemes. Having outlined the main principles of the dictionary’s macro- and microstructure, the author proceeds to a detailed discussion of the dictionary entries for two Polish equivalents of the French pragmatic formula Tu m’en diras tant!: Co ty nie powiesz! and No nie mów!
Opisać Verbum w dziele filmowym. Refleksje nad książką Bogusława Skowronka "Język w filmie. Ujęcie mediolingwistyczne" (Kraków 2020, 277 ss.)
No full text"Verbum w filmie, językowi w filmie, językowemu dyskursowi filmowemu, pasmu werbalnemu
w filmie poświęcił uwagę Autor w najnowszej książce Język w filmie. Ujęcie mediolingwistyczne
(2020), która stanowi merytoryczne i metodologiczne dopełnienie i kontynuację
Mediolingwistyki (2013). Warto było na nią czekać. Perspektywa mediolingwistyczna wydaje
się idealna do opisu języka w filmie. Adekwatność jej stosowalności wobec złożonego
dzieła filmowego wynika z tego, że jest to subdyscyplina ze swej natury transdyscyplinarna
(„wielość ujęć i polimetodologiczne poszukiwania”, Skowronek, 2020: 12), gwarantująca
wielostronny ogląd składnika werbalnego w dziele filmowym, naturalnie (współ)istniejącego
w trybie synergii z innymi jego składnikami. Głęboką wartością mediolingwistyki jest
szerokie ujęcie języka w kontekście, tu: szczególnie języka w dziele filmowym czy szerzej
w mediach; jak deklaruje Autor: „[…] definiuję język jako nierozerwalny element struktur
poznawczych, których funkcjonowanie zależne jest od kontekstów zewnętrznych – a dziś
zwłaszcza kultury medialnej” (Skowronek, 2020: 10)." (fragm.
Anxiety among pregnant women during the first wave of the COVID-19 pandemic in Poland
No full textAlthough anxiety is common because of the transitional nature of the perinatal period, particularly high levels of anxiety have been observed in some studies of pregnant women during the pandemic. The purpose of this study was to evaluate the severity of anxiety among pregnant women during the first wave of the COVID-19 pandemic in Poland, and factors associated with it. Cross-sectional study with a total of 1050 pregnant women recruited via social media in Poland during the first wave of the COVID-19 pandemic, from March 1 until June 1, 2020. The survey included validated psychological measures: the GAD-7 (anxiety), the PREPS (pandemic stress), with two subscales: preparedness and infection stress, and obstetric, sociodemographic and COVID-19 related variables. T-tests, ANOVAs, and hierarchical binary logistic regression for dichotomized GAD-7 scores (minimal or mild vs. moderate or severe) were used. Over a third of respondents experienced moderate or severe levels of anxiety. Predictors of moderate or severe anxiety were non-pandemic related factors like unplanned pregnancy and emotional and psychiatric problems, as well as pandemic related pregnancy stress. Levels of anxiety among pregnant women during the first wave of the COVID-19 pandemic in Poland exceeded pre-pandemic norms. Findings suggest that prior psychiatric conditions, unplanned pregnancy, and elevated pandemic-related pregnancy stress due to concerns about infection or poor preparation for birth contributed to the risk of high anxiety in Polish pregnant women during the pandemic onset. Given the harmful effects of antenatal anxiety on the health and well-being of mothers and their children, psychotherapeutic interventions, efforts to alleviate pregnant women’s stress, and training in adaptive ways to cope with stress are vital to reduce the prevalence of maternal anxiety and its potential consequences during this global crisis
Outer Membrane Vesicles as Mediators of Plant–Bacterial Interactions
No full textPlants have co-evolved with diverse microorganisms that have developed different
mechanisms of direct and indirect interactions with their host. Recently, greater attention
has been paid to a direct “message” delivery pathway from bacteria to plants, mediated
by the outer membrane vesicles (OMVs). OMVs produced by Gram-negative bacteria
play significant roles in multiple interactions with other bacteria within the same
community, the environment, and colonized hosts. The combined forces of innovative
technologies and experience in the area of plant–bacterial interactions have put pressure
on a detailed examination of the OMVs composition, the routes of their delivery
to plant cells, and their significance in pathogenesis, protection, and plant growth
promotion. This review synthesizes the available knowledge on OMVs in the context
of possible mechanisms of interactions between OMVs, bacteria, and plant cells. OMVs
are considered to be potential stimulators of the plant immune system, holding potential
for application in plant bioprotection
MicroCT tomography of the Middle Devonian crinoid genus Haplocrinites from Poland
No full textA specimen of the Middle Devonian crinoid genus Haplocrinites (WNoZ/S/4/224/1) was scanned with microtomography to better visualize its internal and external morphology. The scan was performed in 2022 in the Faculty X-ray Microtomography Laboratory at the Faculty of Computer Science and Material Science, University of Silesia in Katowice, Chorzów, Poland, using the General Electric Phoenix v|tome|x micro-CT equipment at 160 kV, 70 μA and scanning time of 20 min. Projection images were captured using a 1,000×2,024 pxs scintillator/CCD with an exposure time of 250 ms and processed using Volume Graphics® VGSTUDIO Max software and analysed using Volume Graphics® myVGL viewer.A rich collection of well-preserved Middle Devonian crinoid thecae from Holy Cross Mountains (Świętomarz locality, Poland) is described. They are attributed to the widely distributed inadunate crinoid genus Haplocrinites. Using a traditional classification these thecae should be assigned to two species (H. aremoricensis and H. boitardi). However, a wide range of morphologic variation suggests that this assemblage represents morphological variants of a single species. This is supported by morphometric analyses which revealed that these thecae are not clustered into two morphologically distinct groups. These data show that the number of haplocrinitid species is likely overestimated. Traditional classifications based on the cup shape and ornamentation are no longer tenable, and require substantial revision. The diagnosis of H. boitardi is emended to encompass a broader range of morphologic variation. H. aremoricensis is a junior synonym of H. boitardi.Narodowe Centrum Nauk
Characterization of Catechol-1,2-Dioxygenase (Acdo1p) From Blastobotrys raffinosifermentans and Investigation of Its Role in the Catabolism of Aromatic Compounds
No full textGallic acid, protocatechuic acid, catechol, and pyrogallol are only a few examples of
industrially relevant aromatics. Today much attention is paid to the development of new
microbial factories for the environmentally friendly biosynthesis of industrially relevant
chemicals with renewable resources or organic pollutants as the starting material.
The non–conventional yeast, Blastobotrys raffinosifermentans, possesses attractive
properties for industrial bio-production processes such as thermo- and osmotolerance.
An additional advantage is its broad substrate spectrum, with tannins at the forefront.
The present study is dedicated to the characterization of catechol-1,2-dioxygenase
(Acdo1p) and the analysis of its function in B. raffinosifermentans tannic acid catabolism.
Acdo1p is a dimeric protein with higher affinity for catechol (KM = 0.004 0.001 mM,
kcat = 15.6 0.4 s1) than to pyrogallol (KM = 0.1 0.02 mM, kcat = 10.6 0.4 s1).
It is an intradiol dioxygenase and its reaction product with catechol as the substrate is
cis,cis-muconic acid. B. raffinosifermentans G1212/YIC102-AYNI1-ACDO1-6H, which
expresses the ACDO1 gene under the control of the strong nitrate-inducible AYNI1
promoter, achieved a maximum catechol-1,2-dioxygenase activity of 280.6 U/L and
26.9 U/g of dry cell weight in yeast grown in minimal medium with nitrate as the
nitrogen source and 1.5% glucose as the carbon source. In the same medium with
glucose as the carbon source, catechol-1,2-dioxygenase activity was not detected
for the control strain G1212/YIC102 with ACDO1 expression under the regulation of
its respective endogenous promoter. Gene expression analysis showed that ACDO1
is induced by gallic acid and protocatechuic acid. In contrast to the wild-type strain,
the B. raffinosifermentans strain with a deletion of the ACDO1 gene was unable to
grow on medium supplemented with gallic acid or protocatechuic acid as the sole
carbon source. In summary, we propose that due to its substrate specificity, its thermal stability, and its ability to undergo long-term storage without significant loss
of activity, B. raffinosifermentans catechol-1,2-dioxygenase (Acdo1p) is a promising
enzyme candidate for industrial applications
L'approche Deleuze-Guattari et le fantastique
No full textEn nous appuyant sur l’hypothèse de Gilles Deleuze et Félix Guattari, décrite dans
Mille Plateaux, nous présentons dans notre article la conception de deux modèles, de
deux visions du monde, de la culture et de la littérature : à savoir un modèle traditionnel
de racine et un modèle moderne de rhizome. Nous admettons que le fantastique
traditionnel s’inscrit dans le modèle-racine tandis que le néofantastique est plus proche
du modèle-rhizome. Dans notre article, nous analysons le fantastique-racine dont les
principes s’appuient sur les règles caractérisant le modèle arborescent, c’est-à-dire l’organisation,
la réflexion, l’imitation et l’analogie. Le néofantastique, quant à lui, remplit
les critères qui, selon Deleuze et Guattari, décrivent le rhizome ; ce sont : la connexion,
l’hétérogénéité, la multiplicité, la rupture asignifiante et la cartographie/la décalcomanie.
Le corpus des textes analysés est constitué par « La Vénus d’Ille » comme exemple
du fantastique-racine et les récits du recueil Hôpital Nord d’Andrevon et de Cousin
comme modèle du fantastique-rhizome
Poczucie samowystarczalności barierą kształtowania otwartej tożsamości religijnej w „czasie marnym”
No full textThe pedagogical reflection on methods and condition of creating of an
open religious identity of youth was presented by the author in the perspective of
the current social situation, rather unfavourable towards activities in the field of
religion especially bearing traits of the openness to the Otherness. Such a situation
has been defined by the philosopher and poet Friedrich Hölderlin as the “destitute
time”. Therefore, the author has made this quote of Friedrich Hölderlin and Rainer
Rilke as necessary philosophical context of the reflection.
In a search of the complete overview and description of the open religious
identity and determinants of the process of its forming, the author focuses on the
selected questions such as religious fundamentalism, sense of self-sufficiency in
religious dimension, reflectivity and parrhesia which in in an essential way, positive
or negative, determine the discussed process