bluuebunny/crossref_metadata_2025_split huggingface dataset:
Characteristics of Technological Properties of Grain and Flour from Ancient Varieties of Wheat (Einkorn, Emmer and Spelt)
Authors: Belcar Justyna , Sobczyk Anna , Sobolewska Magdalena , Stankowski Sławomir , Gorzelany Józef 
Published: January 2021

Abstract
The study presents assessment of commodity characteristics of grains from ancient varieties of wheat (einkorn, emmer and spelt) in comparison to grains of the conventional wheat cultivar Arkadia. The findings related to the grain of einkorn and emmer were very similar, and far worse than those related to spelt grain; the latter were found with better ratings, sometimes even in comparison to the conventional wheat grain (e.g. the highest mass-weight density). Similar relationships were observed between the flours produced by milling the grains. Analysis of the indirect baking quality indicators showed that flours from einkorn and emmer can effectively be used for baking purposes, however they present low technological value. The flour from emmer wheat was found to be the poorest, which was confirmed e.g. by the low gluten number, gluten index, Zeleny’s index, and high gluten spreadability. Spelt flour was found to present moderate technological value. Based on the results it can be concluded that by using adequate modification in the process of dough kneading and fermentation it will be possible to produce high quality baked goods from ancient wheat grains.
Effect of Tytanit® on the Physiological Activity of Wild Strawberry (Fragaria vesca L.) Grown in Salinity Conditions
Authors: Auriga Alicja , Wróbel Jacek , Ochmian Ireneusz 
Published: January 2021

Abstract
Progressive global warming and decreasing freshwater resources are forcing to look for alternative solutions in plants cultivation. The use of saltwater and cultivation in saline areas becomes increasingly common. Wild strawberry is a rich source of antioxidant compounds beneficial for human health. The aim of the study was to investigate the effect of Tytanit® on the physiological activity of wild strawberry grown under different salinity levels (32.5, 50 and 100 mM L−1 NaCl). Assimilatory pigments content, free proline concentration, chlorophyll fluorescence and relative water content were measured at two phenological phases BBCH 15 and 60. Results analysis revealed that the applicability of Tytanit® to mitigate physiological stress in wild strawberry caused by salinity did not produce the desired effect.
Nonlinearities on particular elliptic curves subspaces and applications
Authors: Alsaedi Ramzi , Dhifli Abdelwahab , Ghanmi Abdeljabbar 
Published: January 2021

Abstract
Researching on mathematical models for cryptography means to, primary, define the optimal spaces and rules for which we can archive the maximum time to find the involved parameters of the keys and, in the same time, to optimise the time for key generation.
In the present work, we treat a particular case of some subspaces from elliptic curves which respect the announced principles.
Jacobsons Lemma fails for nil-clean 2 × 2 integral matrices
Authors: Călugăreanu Grigore , Pop Horia F. 
Published: January 2021

Abstract
We show that for two 2 × 2 integral matrices A, B, if the product AB is nil-clean then BA may not be nil-clean. Despite the fact that for many special cases, BA is also nil-clean, we finally found three counterexamples. All the way, the computer aid was decisive.
Algorithmic Aspects of Some Variants of Domination in Graphs
Authors: Kumar J. Pavan , Reddy P.Venkata Subba 
Published: January 2021

Abstract
A set S ⊆ V is a dominating set in G if for every u ∈ V \ S, there exists v ∈ S such that (u, v) ∈ E, i.e., N[S] = V . A dominating set S is an isolate dominating set (IDS) if the induced subgraph G[S] has at least one isolated vertex. It is known that Isolate Domination Decision problem (IDOM) is NP-complete for bipartite graphs. In this paper, we extend this by showing that the IDOM is NP-complete for split graphs and perfect elimination bipartite graphs, a subclass of bipartite graphs. A set S ⊆ V is an independent set if G[S] has no edge. A set S ⊆ V is a secure dominating set of G if, for each vertex u ∈ V \ S, there exists a vertex v ∈ S such that (u, v) ∈ E and (S \ {v}) ∪ {u} is a dominating set of G. In addition, we initiate the study of a new domination parameter called, independent secure domination. A set S ⊆ V is an independent secure dominating set (InSDS) if S is an independent set and a secure dominating set of G. The minimum size of an InSDS in G is called the independent secure domination number of G and is denoted by γ
is
(G). Given a graph G and a positive integer k, the InSDM problem is to check whether G has an independent secure dominating set of size at most k. We prove that InSDM is NP-complete for bipartite graphs and linear time solvable for bounded tree-width graphs and threshold graphs, a subclass of split graphs. The MInSDS problem is to find an independent secure dominating set of minimum size, in the input graph. Finally, we show that the MInSDS problem is APX-hard for graphs with maximum degree 5.
Null scrolls with prescribed curvatures in Lorentz-Minkowski 3-space
Authors: Šipuš Željka Milin , Gajčić Ljiljana Primorac , Protrka Ivana 
Published: January 2021

Abstract
In Lorentz-Minkowski 3-space, null scrolls are ruled surfaces with a null base curve and null rulings. Their mean, as well as their Gaussian curvature, depends only on a parameter of a base curve. In the present paper, we obtain the first-order nonlinear differential equation (Riccati equation) which relates curvatures of a base curve to curvatures of a null scroll. Conditioned by this equation, we can determine a family of null scrolls with a given null base curve and prescribed curvatures, in particular, a family of minimal and constant mean curvature null scrolls.
New aspects in polygroup theory
Authors: Sonea Andromeda Cristina 
Published: January 2021

Abstract
The aim of this paper is to compute the commutativity degree in polygroup’s theory, more exactly for the polygroup PG
and for extension of polygroups by polygroups, obtaining boundaries for them. Also, we have analyzed the nilpotencitiy of 𝒜[𝒝], meaning the extension of polygroups 𝒜 and 𝒝.
Biological Properties of Knitted Fabrics Used in Post-Burn Scar Rehabilitation
Authors: Latańska Ilona , Kowalski Krzysztof , Kłonowska Magdalena , Jaworska Aleksandra , Doś Janusz , Karbowski Krzysztof , Sujka Witold 
Published: January 2021

Abstract
Compression therapy along with the use of compression materials is one of the main prevention methods against scars and keloids. Compression knitted fabrics must be characterized by parameters that enabling to reaching class I compression (16–24 mmHg). When constant pressure higher than capillary vessels pressure is applied to scars, it will have a negative influence on formation of keloids and significantly prevents their hypertrophy. Long-term pressure causes tissue hypoxia, slowed-down metabolism, and reduction of the amount of fibroblasts. One of key elements of compression therapy is choosing the required knitted fabric with necessary structure and physicomechanical parameters as well as designing methodology based on Laplace law, which will ensure the application of desired value of single-unit pressure on post-burn scar. Apart from physicomechanical parameters, a medical device, such as compression garment, must be characterized by high level of biocompatibility. An added value in terms of functional parameters is the antibacterial action of the product. It was obtained from the fibers used which contain a compound in their matrix and out of which silver ions are released. Additionally, the antibacterial action was also obtained via impregnation of the knitted fabric in RUCO-BAC AGP which contains silver. In the course of the research presented in the article, compression fabric was designed with a special construction—a knitted fabric comprising two layers. The first layer, which is in direct contact with human skin, is manufactured out of a yarn with conductive-diffusive characteristics. The second layer is made of microfibers which keep the moisture out of skin surface and also diffuse it to the outside. The following article describes the final stage of developing a compression garment aiding the external treatment process; the mentioned stage is related to biological tests such as microbiological contamination, cytotoxicity, sensitization, and irritation. The article closes a series of publications presented by the Authors in bibliography. It also presents the antibacterial activity tests done on the developed double-layer knitted fabric enriched with silver. The obtained results suggest that the fabric may be used not only in compression therapy, but also in the field of cosmetics and aesthetics.
New Alien Plant Species Recorded in South Lithuania
Authors: Gudžinskas Zigmantas , Taura Laurynas 
Published: January 2021

AbstractPerforming a thorough inventory of alien plant species in the southern part of Lithuania, we found twelve alien plant species previously not registered in the country: Aruncus dioicus, Buxus sempervirens, Clematis vitalba, Clematis recta, Colutea arborescens, Erechtites hieraciifolius, Erigeron strigosus, Euphorbia marginata, Genista sagittalis, Lathyrus latifolius, Sempervivum arachnoideum and Silphium perfoliatum. All newly recorded alien species, except Erechtites hieraciifolius and possibly Genista sagittalis, have been introduced intentionally and escaped from cultivation. Ten species currently occur as casuals, whereas Colutea arborescens and Genista sagittalis are locally naturalised. Naturalisation of Buxus sempervirens and Euphorbia marginata in the foreseen future is unlikely in Lithuania, naturalisation of Aruncus dioicus, Sempervivum arachnoideum and Silphium perfoliatum is possible. In contrast, naturalisation of the other five species is expected in the nearest future. Invasion of seven analysed alien species is unlikely in Lithuania, whereas Clematis vitalba, Colutea arborescens, Erechtites hieraciifolius, Erigeron strigosus, Lathyrus latifolius have the potential to become invasive in the country. Therefore, their reproduction and spread should be monitored, and measures for prevention of their invasion should be applied, if necessary.
Is COVID-19 on the Covers of Socio-Political Magazines an Example of Media Polarisation? Case Study from Poland
Authors: Jupowicz-Ginalska Anna 
Published: January 2021

Abstract
The main purpose of this paper was to explore the media image of the COVID-19 pandemic through the perspective of Polish media polarisation. In order to achieve this, a quantitative and qualitative analysis of the content of covers from 10 socio-political magazines, representing different ideological inclinations [left-wing, liberal, conservative, right-wing and Catholic] was conducted between January and June 2020. The study focused not only on the scale to which the coronavirus appeared on the covers, but also on the textual and visual representation of it. Additionally, the contexts in which COVID-19 appeared were analysed. As it turned out, apart from the medical context, the pandemic was mostly presented through political, social, economic and religious perspectives, of which the first was the most visibly connected with polarising media content, indicating clear links between the ideological bias of the magazines and the ways they described reality.
The Moral Economy of Micro-Transactions in Digital Games
Authors: Nielsen Daniel 
Published: January 2021

Abstract
In the digital game industry, micro-transactions (MTXs) have been introduced as a new vehicle for profit generation. MTXs are small sum payments for additional virtual content beyond the content players obtain through game-play and progression, which impose new structural limitations and opportunities for game participation on the players. This article explores the perspectives of players on corporate commodification strategies of gameplay. The empirical work consists of semi-structured focus group interviews of players and interviews of podcast hosts. All informants are players of various online games.
By adopting Sayer’s (2004, 2007, 2017) concept of moral economy and de Certeau’s (2011) concept of tactics in everyday life, this study draws two conclusions. First, virtual items and goods obtained through in-game activities or MTXs are a means to communicate skill level, taste, and experience between players as a fundamental part of the moral economy of establishing fair ground for competition. With regard to MTXs, players distinguish among three levels in which agency is maintained or limited. Second, players negotiate these models of commodification and agency limitation in ambivalent ways, both resisting and embracing economic values in the moral economy of play. Furthermore, because of this negotiation, players are generally concerned about the invasive nature of economic values taking priority over the values that guide the practices of play. In other words, there is a moral concern regarding how norms and values in play are compromised or overridden by outside economic pressures.
Evaluation of Enriched Learning Environment in the Context of Mathematical Reasoning from the Perspective of the Students and their Teacher
Authors: Kutluca Tamer , Tum Ali , Mut Ali İhsan 
Published: January 2021

Abstract
The purpose of the current study is to investigate the learning process, which is enriched by using various teaching methods in the context of mathematical reasoning from the perspectives of seventh grade students and their mathematics teacher. In order to have an in-depth study, a qualitative research approach was preferred. This research was conducted with 23 seventh grade students and their mathematics teacher at a randomly selected public secondary school. Qualitative data was collected by using a semi-structured interview form developed for both the teacher and the students. As a result of this research, it was determined that this learning environment increased students’ participation in the lessons, provided effective and permanent learning and encouraged the use of mathematical reasoning skills. In addition, it was found that this learning environment, which uses various learning ways, develops a positive attitude towards the lessons. Besides, according to the findings of this study, it was found that the learning environment in which various learning ways were utilized provided sufficient knowledge of concept and method to the students, and improved their mathematical reasoning skills.
Sustainability Balanced Scorecard Architecture and Environmental Investment Decision-Making
Authors: Jassem Suaad , Zakaria Zarina , Che Azmi Anna 
Published: January 2021

Abstract
This study is centered around a set of research questions that aim to explain how sustainability balanced scorecard architectures with sustainability parameters either embedded or treated as a separate perspective relate to environmental investment decision-making. The research also examines the mediating role of sustainability balanced scorecard knowledge and moderating role of strategic risk information. This article presents the results and answers to the research questions via conducting an experimental study approach using a two-factor factorial design. This is possibly the first study that determines, through an experimental procedure conducted with managers working in large manufacturing companies, whether any significant difference exists in environmental investment decision outcomes when decision-makers are presented with either an architecture where sustainability is embedded with the traditional four perspectives of balanced scorecards versus when it is presented as a separate fifth perspective. Furthermore, the development of an integrated model is possibly a significant contribution to the extant literature.
Predictors of moral distress among nurses working in Jimma University Medical Center, South West Ethiopia
Authors: Beyaffers Habtam Abebaw , Woldetsadik Marta Tessema , Gizaw Admasu Belay 
Published: January 2021

Abstract

Background
Moral distress is characterized by biopsychosocial, cognitive, and behavioral effects experienced by clinicians when their values are compromised by internal or external constraints, which results in the inability to give the desired care to patients.

Objective
To assess predictors of moral distress among nurses working in Jimma University Medical Center, South West Ethiopia.

Methods
An institution-based cross-sectional study design was used. A simple random sampling technique was applied to select a total of 248 study participants. Data were collected using a structured self-administered questionnaire, which contains socio-demographic characteristics, Moral Distress Scale-Revised, personal factors, and organizational factors. The data were entered into Epidata version 3.1 and analyzed by SPSS software version 20. Descriptive statistics, bivariate analysis, and multivariable logistic regression analysis were performed. Finally, P-value <0.05 was used to declare and include variables with statistically significant in predicting the outcome variable.

Results
More than two-thirds of the study participants 170 (68.5%) were females. The mean age of the respondents is 29 years. Among the study participants, 174 (70.16%) nurses had experienced a high level of moral distress. Sex, working hours, professional commitment, autonomy, and working environment were statistically significant predictors of moral distress.

Conclusions
More than two-thirds of the nurses were experiencing a high level of moral distress. This will affect the nursing service quality, nurses, the nursing profession, and the organization as a whole. This finding is critical for the study since the problem is happening in the presence of low nurse to patient ratio and low nursing care quality. Sex, working hours per week, professional commitment, autonomy, and working environment were identified as predictors of moral distress.
Reading in Research and Information Centres. Case Study of LBUS
Authors: Rodica Volovici , Andreea Capatana 
Published: January 2021

Abstract
The paper focuses of to open the minds of pupils and turn them to reading, teacher librarians must prepare pupils, bring them face to face with reading, situations, themes from each reading instance, so that they can analyze, describe, freely express themselves, using the right words to convey their thoughts, feelings, emotions, and compare the information they came across while reading with their own experiences, the situations they’ve lived through, thus anchoring them in daily reality.
Pragmatization of stylistics
Authors: Bohunická Alena 
Published: January 2021

Abstract
The pragmalinguistic approach to the relationship between language and human is also reflected in the stylistic research. In this paper, we aim to clarify the sense of pragmatization in stylistics and outline the new stimuli for such a perspective. This goal assumes a brief analysis of implementations of pragmatic ideas in distinct Slovak stylistic paradigms and a presentation of a perspective for further reflections. We understand pragmatization in stylistics as a change of the interpretative model of language; a shift away from perception of language in the frame of an instrumental paradigm towards the perception of linguistic activity as social action. When clarifying the specificity of the language activity, which we call social action, we will apply H. Arendt’s ideas in her theory of action, specifically on the distinction between the terms labor, work and action. In line with the pragmalinguistic focus on a cognition of the human from the language perspective, and referring to the Arendt’s concept of the self-manifestation in speech, we find an anthropic approach to the language style and the authenticity as its most significant characteristics (especially in regard to public sphere) as viable for current stylistics.
A low profile compact three-way Wilkinson power divider with size reduction
Authors: Kasar Ömer 
Published: January 2021

Abstract
In this study, a three-way Wilkinson power divider (WPD) was proposed the circuit whose center frequency was selected as 1.9 GHz operates between 0.95-2.95 GHz frequencies and has a bandwidth of approximately 105%. The simulation and measurement results of the designed circuit were well aligned with each other below 10 dB return loss and 13 dB isolation. In addition, 0.4, 0.3 and 1.0 dB insertion loss were obtained in the output ways, respectively. The circuit is made more compact thanks to the curved structure of the output ways. It has been found that the proposed three-way power divider takes about 35% less space than the conventional circuit design.
Islamophobic Discourse of Czech Politicians and Political Parties on Twitter during the 2015 Migration Crisis
Authors: Vallo Zbyněk , Jaworek Robert , Matlach Vladimír 
Published: January 2021

Abstract
This article focuses on the manifestations of Islamophobia of Czech politicians and political parties on the social networking service Twitter during the 2015 migration crisis. It utilizes the securitization theory of Copenhagen school as a theoretical framework, and through content analysis of relevant tweets aims to provide more data on what role Islamophobia played in the securitization of incoming migrants. We find that although securitization, and much more politicization, of migrants took place, obvious Islamophobia, similar to the one of the Czech Islamophobic movement, happened only in some cases. A number of those politicians who politicized or migrants and Islam usually raised their voices against radical Islamophobes.
Effects of vitamin C supplementation on the blood oxidative stress and antibody titre against Histophilus somni vaccination in calves
Authors: Otomaru Konosuke , Oishi Shoko , Fujimura Yu , Iwamoto Yuki , Nagai Katsuhisa , Ijiri Moe 
Published: January 2021

Abstract

Introduction
The purpose of this study was to determine the effects of vitamin C supplementation on blood oxidative stress biomarkers and antibody response to vaccination in calves.

Material and methods
Thirty-four clinically healthy 2 week old Japanese Black calves were randomly assigned to two groups. Seventeen calves formed the VC group which received 1,000 mg of vitamin C daily from 2 to 8 weeks of age, and the other 17 calves of the control group did not receive supplementation. All calves received an inactivated Histophilus somni vaccine at 4 and 8 weeks of age. Blood samples were taken at 2, 4, 8 and 12 weeks of age.

Results
The concentration of the serum reactive oxygen metabolites (d-ROMs), and the oxidative stress index (OSI), which is calculated from the d-ROMs and biological antioxidant potential, were significantly lower at 8 weeks of age in the VC group than in the control group (P < 0.05). The antibody titres to H. somni in the VC group were significantly higher than those in the control group at 12 weeks of age after the second vaccination (P < 0.05).

Conclusion
Vitamin C supplementation to calves may reduce oxidative stress and enhance the antibody production after vaccination with H. somni.