bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hydrogen - Some Historical Highlights
Authors: Szydło Zbigniew A. 
Published: April 2021

Abstract
The early history of experiments in which an inflammable air was prepared is outlined. Once hydrogen had been discovered by Cavendish in 1766, the world of science and technology was given a colossal impetus. Its scientific and social consequences form the main focus of this essay. Special attention is given to explain why experiments were done, and their aims. The many difficulties which confronted scientists in the interpretation of their results are discussed. Timelines have been used in order to facilitate an understanding of the evolution of ideas. A particular emphasis is given to the story of how, through spectral analysis of the hydrogen atom, our understanding of atomic structure developed. Experiments involving hydrogen constitute important teaching material in schools. Detailed instructions are given for making hydrogen in the laboratory and for demonstrating its lightness and flammability. Suggestions are made of how to use these reactions to teach a wide variety of chemical concepts and facts.
Human Resources and R&D at the Institute for Nanomaterials, Advanced Technologies and Innovation (TUL)
Authors: Svermova Pavla , Kabova Alena , Starostina Olha , Pankova Marketa 
Published: April 2021

Abstract
Within the next few years, Europe’s economic paradigm will change fundamentally. Its manufacturing base will continue to shrink, and therefore future growth and social welfare will rely increasingly on knowledge-intensive industries and services, and ever more jobs will require a higher education qualification. Human resources are a core determinant of quality in higher education and research. Universities must therefore work to enhance their human potential, both qualitatively and quantitatively, by attracting, developing and keeping talent in teaching/research careers. Excellence may only emerge from a favourable professional environment based in particular on open, transparent and competitive procedures. Research and development (R&D) has proven to be a crucial factor in shifting the world’s technological frontiers, while at the same time facilitating new technological and scientific innovations. This paper will focus on R&D at the Institute for Nanomaterials, Advanced Technologies and Innovation at the Technical University of Liberec, Czech Republic. After a description of a literary search in the introduction, the specific real situation at this institute is mentioned, i.e. the number of submitted and solved national and international projects, statistics on research and development sources, and of course human resources at the institute. In the conclusion, the reader will be able to get a picture of how to increase the institute competitiveness in international collaboration.
Together or Separately: Dilemmas of Group Work in Professional Creativity
Authors: Szmidt Krzysztof J. , Modrzejewska-Świgulska Monika 
Published: April 2021

Abstract
The main purpose of the paper is to provide a concise account of the advantages and disadvantages of group work in the activity of professional artists cooperating in various creative teams. The analyzed data comes from three different sources: the authors’ own experience gained through their work as part of various focus groups, other authors’ research results found in the publications on creatology, and the authors’ own investigative work. The aspects of teamwork (group mind) as well as limitations and drawbacks of team work in groups (group thinking) are discussed in the first part of the paper. The second part describes select results of research conducted over the last few years among Polish female artists and film and theatre directors working on joint projects in creative teams. The study examined the determinants of the women’s creative careers. The final section includes a number of conclusions that aim to answer the question posed in the title of the paper.
What do You Really Teach When You Teach Creativity to Adults?
Authors: Janiszewska-Szczepanik Agnieszka 
Published: April 2021

Abstract
As there are obviously numerous understandings of what a “creativity training” is and what it entails in terms of applied curricula and methodologies, it seems worth to consider what type of creativity teaching would be best adjusted and most beneficial for different groups of recipients. Specifically, the paper is devoted to my personal experiences with running open “creativity workshops” (or semester-long “courses”) for a few groups of adults throughout the period of twelve months. The question is posed about the needs and motivations of people searching for such additional classes, which do not constitute any part of their job duties or recommended career-related trainings. Conclusions indicate that more than “teaching creativity,” the main task of an educator of adults, wanting to boost their creativity, would be to support the recipients with transforming their existing creative skills and potential into practice. The role of a trainer is figured out to be more of a “facilitator” or “coach” than a “teacher” identified with formal education and perceived in the classical sense of the term. The primary aim of the described project was not scientific, but because it was a mixture of original exercises with activities proposed in acclaimed creativity textbooks, as a researcher I consider it worthy to share my experience to a wider audience with hope and encouragement that some of the presented solutions or techniques might be applied further.
Logical Form through Abstraction
Authors: Szabó Zoltán Gendler 
Published: April 2021

Abstract
In a recent book, Logical Form: between Logic and Natural Language, Andrea Iacona argues that semantic form and logical form are distinct. The semantic form of a sentence is something that (together with the meanings of its parts) determines what it means; the logical from of a sentence is something that (all by itself) determines whether it is a logical truth. Semantic form does not depend on context but logical form does: for example, whether ‘This is this’ is a logical truth depends on whether the two occurrences of ‘this’ are used to demonstrate the same individual. I respond by claiming that logical form is indifferent to reference and is sensitive only to obligatory co-reference. When the speaker intends both occurrences of ‘this’ to be interpreted the same way the logical from of ‘This is this’ is a=a, while in a context where the speaker has no such intention it is a=b. This proposal allows a much more conservative revision of the traditional picture than the one suggested by Iacona. Instead of identifying the logical form of a natural language sentence by seeking a formalization in an artificial language, we obtain it through abstraction from its syntactic analysis: replacing the non-logical expressions by schematic letters, making sure that we use identical ones if and only if the speaker intended co-reference.
Anaphoric Dependence and Logical Form
Authors: García-Carpintero Manuel 
Published: April 2021

Abstract
In the core chapters 4–6, Iacona (2018) argues against the “Uniqueness Thesis” (UT), stating that “there is a unique notion of logical form that fulfils both the logical role and the semantic role” (39), where the former “concerns the formal explanation of logical properties and logical relations, such as validity or contradiction” (37), and the latter “concerns the formulation of a compositional theory of meaning” (ibid.). He argues for this on the basis of relations of coreference among referential expressions, names and indexicals. From what I take to be a fundamental agreement on most relevant issues, here I will nonetheless press him to clarify the notions of intrinsicness and the logical and semantic role of logical form on which he relies.
The Early Modern Origins of Pragmatism
Authors: Szalek Piotr K. 
Published: April 2021

Abstract
This paper considers the alleged pragmatism of Berkeley’s philosophy using the two Sellarsian categories of ‘manifest’ and ‘scientific’ images of the world and human beings. The ‘manifest’ image is regarded as a refinement of the ordinary way of conceiving things, and the scientific image is seen as a theoretical picture of the world provided by science. The paper argues that the so-called Berkeleian pragmatism was an effect of Berkeley’s work towards a synthesis of ‘manifest’ and ‘scientific’ images through the creation of one unified synoptic vision of the world and was a part of a new conceptual framework within which these two images could be combined.
The Worshipers of Stones. Lacandon Sacred Stone Landscape
Authors: Kováč Milan 
Published: April 2021

Abstract
This article deals with the Lacandon cosmology, one of the few Maya cosmologies which has been exceptionally structured and until today, very well preserved. The present study is based mainly on associations related to stone. There are investigated the emic classifications of the Lacandon. Their classification of divine beings according to their location, and their connection to the stone houses, whether of natural or cultural origin. In the article are analyzed the most sacred Lacandon sites such as the rock shelters, cliffs and caves around the Lake Mensäbäk and Lake Yahaw Petha, as well as Yaxchilan, the archaeological site with the long tradition of Lacandon pilgrimages. The Lacandon believe in different types of transfer of spiritual energy through stone. The stones could be considered on different levels as the seat, heart or embodiment of deities. These relationships and contexts are very complex. The article tries to identify it and to offer some linguistic and theoretical approaches.
Class, Urbanity and the Environment. The Ethnography of the New Middle/Creative Class Identity in Warsaw's Industrial Suburbs
Authors: Wierciński Hubert , Sadowska Natalia , Poniatowska MałGorzata 
Published: April 2021

AbstractIn this article we analyse local community-based concepts and practices related to establishing a new middle-class identity when under social and “environmental” pressure. We based our ethnographic inquiry in “RA” – a Warsaw suburb – well-known as a former village but now a location for industry and waste-processing plants. Its vicinity, despite being populated, is polluted by heavy traffic, noise and an unpleasant odour, all of which recently have become the stimulus for social mobilisation and intense criticism toward the local authorities and an inconsiderate urbanisation policy. A key role here is played by two organisations, both exerting a strong influence on the new middle/creative class living in gated communities – a novel phenomenon for the local sociocultural landscape. We argue that this activism and struggle for a clean environment is rooted in the post-1989 Polish politico-economic transformation and the emergence of new middle-class identity projects. Thus, we reveal that sustainable urbanisation and “green policies” in Poland are embedded in middle-class identities, and gain momentum especially when class identity and image are under threat.
A History of Koshe Town in South-Central Ethiopia from 1941 to 1991
Authors: Getachew Yohannes Tesfaye 
Published: April 2021

Abstract
Koshe town is the administrative and commercial center of Mareko woreda.1 It is found in Gurage Zone Southern Nation Nationalities and Peoples Regional State. According to the tradition the origin of the name “Koshe” is originated from the plant which called by the name Koshe which abundantly grow in the area. The establishment of Koshe town is directly associated with the five years Italian occupation. Due to the expansion of patriotic movement in the area Italian officials of the area forced to establish additional camp in the area in a particular place Koshe. This paper explores the role of Fascist Italy for the establishment of Koshe town.
The former weekly market shifted its location and established around the Italian camp. Following the evacuation of Fascist Italy the Ethiopian governments control the area. During the government of Emperor Haile Selassie Koshe town got some important developmental programs. The most important development was the opening of the first school by the effort of the Swedes.2 The Military regime (Derg)3 also provided important inputs for the urbanization of Koshe town. This research paper observes the development works that flourish in Koshe during the reign of Emperor Haile Selassie and the Military regime, and also asses the role of different organizations for the urbanization of Koshe town.
A Spatial Econometric Analysis on the Impact of COVID-19 on Mortality Outcome
Authors: Shobande Olatunji , Ogbeifun Lawrence 
Published: April 2021

Abstract
The study develops and examines the spatial distribution of the Corona Virus Disease (COVID) on mortality outcomes using a global panel dataset of 79 countries. The empirical evidence is based on Fixed Effect (FE) and System Generalized Method of Moment (SGMM) estimator. The predicted variable is proxy with daily mortality outcomes, while the predictor variable is proxy with spatial COVID spread while controlling for social tension and average temperature. The global and regional findings of the study established that spatial variation in COVID spread had positive and significant relationships with mortality outcomes. Further results also indicate that social tension is a contributing factor to the rising daily mortality outcome from the COVD outbreak, whereas temperature variation reduces mortality outcome. Thus, the study recommends the use of statistical modelling to predict and manage the epidemic. Also, there is an urgent demand to deploy essential social need to the vulnerable proportion of the population to reduce the level of social unrest, while strengthening collaborative research among scientists to develop, produce and distribute vaccines that will put an end to the pandemic.
Deconstructing the Impact of Entrepreneurship on Income Inequality in Sub-Saharan Africa Countries
Authors: Ogede Jimoh S. 
Published: April 2021

Abstract
The study examines the impacts of entrepreneurship on income inequality in a panel of 29 Sub-Saharan African countries spanning from 2004 to 2020. The paper employs a dynamic heterogeneous panel approach to differentiate between long-run and short-run impacts of entrepreneurship on income inequality. The findings establish a robust and direct nexus between entrepreneurial activities and income disparity. The results of the two entrepreneurial indicators are stable. Besides, the coefficient of the human capital is positive in the regression and statistically significant at a 5 percent significance level. The proxies for macroeconomic factors exhibit diverse signs and impact, which suggest a policy stimulus aimed at refining macroeconomic situations and also ignite prospects for households to increase their incomes.
The Hotel Site Selection: Determining Locational Factors by Fuzzy TOPSIS
Authors: Ulucan Ebru 
Published: April 2021

Abstract
Just like in other industries, it is very important to choose the best possible location in hotel investments. As there are too many alternatives and changing touristic demands, there is serious competition within the hospitality sector. Therefore, all the investors want their properties located at the most profitable and competitive sites. To do so, they should decide the hotel location site by doing a well-analysed feasibility study. The hotel location selection can be influenced by some elements such as natural, economical, socio-cultural, legal, psychological factors and agglomeration effects. All of these factors have important roles of a hotel’s business success. However, especially in the last few years, the increasing numbers of hotel investments call in doubt that these factors are not considered properly. With this doubt, the main problems of this research have been revealed: what main factors do the investors consider in their investment decisions, and how do they decide the best site to locate the hotel? These problems also create the aims of this paper, which are to determine the factors that are important for investors and to find out where the most selected investment zones are. To achieve this goal, Istanbul has been divided into five agglomeration (investment) zones such as Historical Peninsula, Taksim-Beşiktaş-Şişli, Sarıyer-Maslak-Levent, Airport Area and Anatolian Side, according to their agglomeration effects. Then, interviews were completed with six hotel investors from these areas in order to get their opinions about the investment decisions. The gathered information has been analysed by the fuzyy TOPSIS method, which helps to calculate the subjective thoughts of the investors in a quantitative way. Then, the order of preference within the investment zones was calculated to determine the most popular site among the investors. The results showed that the most important factors for hotel location selection are agglomeration effects and economical factors. According to the order of preference, the most preferred location site has been determined as the Historical Peninsula, which includes Fatih, Eminönü, Sultan-ahmet and Topkapı zones.
Forecasting operational costs of technical objects based on the example of railbuses
Authors: Dziaduch Izabela 
Published: April 2021

Abstract
The purpose of the article is to present the method for forecasting one of the three categories of exploitation costs, i.e., operational costs. The article analyses the available subject literature discussing the methods of measuring operational costs used in the LCC analysis. The presented method for forecasting operational costs of technical objects applies econometric modelling, probability distributions and certain elements of descriptive and mathematical statistics. The statistical data analysis was performed using the functions and commands available in Microsoft Excel. Weibull++ application was also used for constructing probability distributions for random variables and verifying hypotheses. The method was tested on eight single-mode railbuses, operated by one of the regional railway companies providing passenger transport. An ex-post relative forecast error was used to measure the level of accuracy of the operational cost forecast. The analysis of the compliance between forecasted cost value and the actual costs showed extensive convergence as evidenced by the level of estimated relative errors. In forecasting the operational costs of railbuses, the average error was approx. 2.9%. The presented method can, therefore, constitute the basis for the estimation of both operational costs and exploitation costs, which represent an important cost component considered when assessing the profitability of purchasing one of the several competing technical objects offered by the industry.
Risk analysis in maintenance processes
Authors: Drożyner Przemysław 
Published: April 2021

Abstract
The article aims to present practical methods for prioritising the activities of maintenance departments based on the Pareto analysis and the failure risk analysis. Based on the collected data on the number of observed failures and their removal times, commonly known reliability indicators were determined, which were then used to estimate the probabilities and consequences of failures in terms of the risk of loss of production continuity. Based on commonly collected failure data, the developed methods allow proposing to the maintenance departments the sequence of maintenance and repair work to be undertaken in terms of minimising the risk of failure. Risk analysis is somewhat commonly used in the practice of maintenance departments (e.g. RBI, FMEA, ETA, FTE, HIRA). The added value of this work is the use of reliability indicators for estimating the values of risk components, i.e., probability and consequences. The method was developed on the basis of operational data collected in one of the plants of the dairy cooperative and, after assessing the effects of its implementation, it was implemented in other enterprises of the cooperative.
Plant isoflavones can affect accumulation and impact of silver and titania nanoparticles on ovarian cells
Authors: Sirotkin Alexander V. , Alexa Richard , Stochmalova Aneta , Scsukova Sona 
Published: April 2021

Abstract

Objectives. The application of nanoparticles is experiencing a rapid growth, but it faces a problem of their toxicity, especially adverse effects on female reproduction. Food and medicinal plants and their isoflavones can be protectors against environmental stressors, but their ability to abate the adverse effects of nanoparticles has not been studied yet. In the present study, we examined the effect of silver (AgNPs) and titanium dioxide (titania, TiO2NPs) nanoparticles alone or in combination with plant phytoestrogens/antioxidants (resveratrol, diosgenin, and quercetin) on accumulation of nanoparticles, and progesterone release by cultured porcine ovarian granulosa cells.

Methods. Porcine granulosa cells were incubated in the presence of AgNPs or TiO2NPs (0.1, 1, 10 or 100 µg/ml) alone or in combination with resveratrol, diosgenin or quercetin (10 µg/ml) for 48 h. The accumulation of tested nanoparticles by granulosa cells was assessed under light microscope. Progesterone concentration in culture media was measured by ELISA kit.

Results. Cells accumulated both AgNPs and TiO2NPs in a dose-dependent manner. AgNPs, but not TiO2NPs, at highest dose (100 µg/ml) resulted in a destruction of cell monolayer. Both Ag-NPs and TiO2NPs reduced progesterone release. Resveratrol, diosgenin, and quercetin promoted accumulation of both AgNPs and TiO2NPs in ovarian cells and inhibited the progesterone output. Furthermore, resveratrol and diosgenin, but not quercetin, prevented the suppressive action of both AgNPs, and TiO2NPs on progesterone release.

Conclusions. These observations (1) demonstrate accumulation of AgNPs and TiO2NPs in ovarian cells, (2) confirm the toxic impact of AgNPs, and TiO2NPs on these cells, (3) confirm the inhibitory effects of plant polyphenols/phytoestrogens on ovarian steroidogenesis, (4) show the ability of these isoflavones to increase the accumulation of AgNPs and TiO2NPs, and (5) show their ability to reduce the suppressive effect of AgNPs and TiO2NPs on ovarian progesterone release. The suppressive effect of AgNPs and TiO2NPs on ovarian functions should be taken into account by their exposition. However, these adverse effects could be mitigated by some plant isoflavones.
The Impact of Debt on Economic Development of the Western Balkan Countries
Authors: Ćosović Mehdija 
Published: April 2021

Abstract
The degree of increased indebtedness in the Western Balkan countries is generated by increasing consumption in terms of increased economic growth and structural reforms. Although these countries have shown an increase in exports and foreign direct investment over the past few years, the current account deficit remains high, especially in the ratio between external debt and GDP, which is not only high but at the stage of growth. Also, as domestic financial markets are underdeveloped, these countries are to a large extent exposed to an increase in the price of foreign borrowing. The current borrowing policy continues with increasing investment in non-productive consumption, which requires renewed borrowing. The presentation of debt trends, analysis and comparison of external debt of these countries show relevant guidelines in the selection of an adequate economic policy that would enhance the competitiveness of this part of the Balkans. Also, a comparative analysis of the indebtedness ratio will especially assess the state of indebtedness in Serbia, the structure and the movement of external debt towards international financial institutions. The comparison in this paper is made using standard indices of indebtedness based on the data obtained from the national statistical institutes and international financial institutions.