bluuebunny/crossref_metadata_2025_split huggingface dataset:
Exploring EFL Teachers’ Moral Identity: The Case of Iranian Teachers
Authors: Amini Davoud , Najafi Sima , Behin Bahram 
Published: August 2020

Abstract
Educating teachers for sustainability requires that teachers be considered as the mediators of change. To achieve this goal, a constructive teacher-learner relationship is essential where values and ethicality play a crucial role. Investigating language teachersí moral identity as an important aspect of teacher cognition can yield useful insights into the kind of relationship which is congenial to the desired whole-person development. The present qualitative study intended to explore the nature of moral dilemmas in language classes and teachersí criterial beliefs in responding to these dilemmatic situations. A systematic coding analysis of the recorded interviews with eight Iranian experienced EFL teachers revealed that they encountered moral dilemmas in both disciplinary and educational aspects of the teaching process. They referred to their knowledge, experience, intuitive sense as well as the teaching context and learnersí history as sources of their moral judgment. The findings on teachersí moral identity uphold implications for teacher education.
Use of non-destructive eddy current technique to detect simulated corrosion of aircraft structures
Authors: Janovec M. , Čerňan J. , Škultéty F. 
Published: August 2020

Abstract
The article deals with the issue of non-destructive testing of riveted joints. In the article, the authors used a non-destructive eddy current array technique, which was applied to detect simulated corrosion in the field of aircraft riveted joints of aluminum sheets. In aircraft maintenance, the eddy current method is used to control the outer surface of the aircraft skin, especially the areas around the riveted joints. This method makes it possible to detect hidden cracks and corrosion that may occur during aircraft operation. Especially hidden are hidden cracks and corrosion of aircraft structures, which cannot be detected during a visual inspection of the aircraft. The aim of the experimental measurements was to reveal simulated corrosion in the area of riveted joints formed on the experimental sample. Corrosion was simulated by gluing aluminum powder to the surface of the aluminum sheets from which the sample was made. The simulated corrosion in the second and third layers of the riveted sample was reliably detected. The settings, the method of control and the results of measurements are given in the article in the experimental part and the results of measurements. Measurements were performed using a defectoscope with an ECA measurement module, with appropriate measuring probes suitable for this type of inspection.
Nickel phytoremediation potential of some plant species of the Lower Dir, Khyber Pakhtunkhwa, Pakistan
Authors: Sajad Muhammad A. , Khan Muhammad S. , Bahadur Saraj , Shuaib Muhammad , Naeem Abdul , Zaman Wajid , Ali Hazrat 
Published: August 2020

AbstractNickel is a known hepatotoxic, haemotoxic, pulmonary toxic, nephrotoxic, reproductive toxic, carcinogenic, phytotoxic and neurotoxic agent. The adverse ecological impacts from unnecessary heavy metals include contamination of water and soil which pose serious threats to human health. This study was conducted to screen plants for the phytoremediation of nickel from sixty-one sites of the Lower Dir. Nickel-metal was analyzed in the soil, roots and shoots of plants. The total concentration of nickel in soil, roots and shoots was found to be in the range of 1.03-18.98, 12.63-540.73 and 12.00-295.86 mg kg–1 dry weight basis (DW) respectively. The highest nickel contents were present in the roots of Xanthium strumarium (540.73) and shoots of Bryophyllum daigremontianum (295.86). None of the plant species were identified as hyper accumulators for nickel but based on BCF, TF and BAC values most of the species showed feasibility for its phytoextraction and phytostabilization. Xanthium strumarium, Filago hurdwarica, Ranunculus arvensis, Medicago lupulina, Cannabis sativa, Geranium rotundifolium and Cerastium glomeratum are suggested for the phytostabilization of nickel whereas Bryophyllum daigremontianum, Rosularia adenotricha, Iris germanica, Asplenium dalhousiae and Isatis tinctoria for the phytoextraction of soil contaminated with nickel.
New Records of the Asian Tiger Mosquito (Aedes albopictus) in North Macedonia
Authors: Cvetkovikj Aleksandar , Djadjovski Igor , Krstevski Kiril , Popova Zagorka , Rashikj Ljubica , Atanasova Kristina , Cvetkovikj Iskra , Stefanovska Jovana 
Published: August 2020

Abstract

Aedes albopictus is an invasive mosquito species spreading throughout Europe and its presence in North Macedonia was recorded in 2016. Following the first detection in September 2018, we conducted a two-week mosquito monitoring by ovitraps in order to determine if there were established populations of Aedes albopictus in Skopje, the capital of North Macedonia. Ninety-four Ae. albopictus eggs (0 to 18 eggs per ovitrap per week) were collected from 7 (14%) ovitraps in 3 (30%) municipalities. Thirty-eight eggs (40.4%) successfully hatched and the adult mosquitoes were identified by morphology and PCR. No other potentially invasive species were identified during the monitoring period. Ae. albopictus distribution is expanding and poses a risk for an Aedes-borne disease transmission in North Macedonia. The available data highlight the need for a regular monitoring for tiger mosquitoes to plan adequate control measures.
Analysis of Gas and Dust Emissions From the Mining and Quarrying Sector in the European Union Countries
Authors: Tutak Magdalena 
Published: August 2020

Abstract
Despite the ongoing changes in the energy and economic structure of the European Union countries, mineral and energy resources such as hard coal, brown coal, natural gas, copper ores, zinc ores and many other minerals continue to be extracted. Each year, the mining and extraction sector emits thousands of tons of harmful substances into the atmosphere, in the form of greenhouse and other air-polluting gases, as well as harmful dusts. These substances include, amongst others, carbon dioxide, methane, carbon monoxide, as well as PM2.5 and PM10. The European Union climate policy clearly recommends that the exploitation of mineral resources be carried out in full respect of the principles of their rational, economical and environmentally neutral acquisition, which is confirmed by the promoted strategy of sustainable development economy. Therefore, this means the necessity to undertake actions aimed at limiting the emission of greenhouse gases and air pollutants into the atmosphere. To assess the actions taken by the European Union countries to date with respect to limiting those emissions, a comparative analysis was carried out for the particular countries. This analysis encompassed the emission of harmful substances from the mining and quarrying sector by the European Union countries in the years 2008 and 2017. The purpose of the analysis was to show the diversity of those countries in terms of the emission of harmful gases and dusts, as well as to divide them into similar groups. Such a division paves the way for developing a common climate policy and exchanging experiences between the countries from the particular groups. The European Union countries were divided into similar groups using the k-means grouping method. Comparison was also made for the emissions of the substances under analysis for the particular countries over the research years. The results obtained unequivocally demonstrate that this emission has been limited in the European Union, but there are countries where the emission of certain substances has increased.
Analysis of the Time of Crew Evacuation from the Hazardous Area of Mining Exploitation Using Numerical Simulation
Authors: Tutak Magdalena 
Published: August 2020

Abstract
Hard coal mines are vulnerable to a series of hazards that affect the safety and effectiveness of mining production. One of such hazards is the risk of underground fires. As the exogenous underground fires appear suddenly and have a highly dynamic course, it is very often necessary to quickly evacuate the crew from the danger area. The time needed to evacuate the crew from the danger area is most commonly determined by means of analytical methods, which provide a very general calculation. Therefore, it becomes necessary to also make use of other methods and tools for determining this time. Undoubtedly, such characteristics are offered by modern calculation methods based on the artificial intelligence (AI) algorithm and characterised by high accuracy. The paper presents a sample application of such a method for evacuating a 20-member crew from the heading under threat. In order to determine the evacuation time for those individuals, a calculation model was built for the total length of the escape routes equal to 900 m. The results revealed that the total evacuation time for workers moving with the speed corresponding to the movement speed in a heading filled with smoke (with considerably reduced visibility) will amount to approx. 21 minutes. The results obtained may constitute an essential source of information for service teams responsible for ensuring the operational safety in mine headings. At the same time, the model developed allows for broader application to the estimation of crew evacuation times from danger areas.
Use of Selected Adaptive Models to Forecast Accidents During the Repair, Maintenance, Installation of Machines and Equipment
Authors: Małysa Tomasz 
Published: August 2020

Abstract
In the article the possibility of using selected adaptive models to forecast accidents at work during repairing, maintaining and installing machines, was presented. On the basis of statistical data on persons injured in accidents at work (2009-2018), the process of their forecasting was carried out (for 2019 and the years 2019-2021) and the errors of expired forecasts were determined. Prediction of empirical data allowed for the assessment of accident rates among persons injured in total accidents and allowed for the assessment of the state of occupational safety in the area with was analyzed. The presented models can be used to assess accidents in other sectors of the economy and be a tool used to assess the state of occupational safety in an enterprise.
Digital Prototyping on the Example of Selected Self-Propelled Mining Machines
Authors: Bołoz Łukasz 
Published: August 2020

Abstract
The changing requirements and needs of users as well as the demand for new mining machinery solutions pose a challenge for designers. Time spent on the design phase of a new machine is often reduced to a minimum. Small lot production and sometimes single piece production entails the necessity to frequently design and manufacture commercial copies, which are also prototypes. The only effective solution is to apply available CAD and CAE programs enabling digital prototyping. Their use allows for making a complete machine in a virtual environment. The virtual model is subjected to tests aimed at eliminating collisions, optimizing the construction as well as obtaining a lot of information concerning the load, kinematics, dynamics, stability and power demand. Digital prototyping enables avoiding the majority of errors whose detection and elimination in a real object is time-consuming and expensive. The article presents examples of the application of broadly understood computer aided designing of self-propelled mining machines, produced by Mine Master. The effects of applying the modelling, FEM strength analysis, static and dynamic simulations, modelling of drive systems have been demonstrated. The methods used to validate computer models and verify the parameters of finished machines have also been discussed.
Analysis of Methane Emissions From Air Shafts of the Jastrzębska Coal Mining Company in 2017-2019
Authors: Badura Henryk , Łukaszczyk Zygmunt 
Published: August 2020

Abstract
The paper presents formation of the amount of methane released from a coal deposit during coal mining. The total amount of released methane is composed of the amount separated directly into the ventilation air in mines (ventilation methane) and included in the demethanation system, isolated from the ventilation air. Methane from the demethanation system is only partially utilized. The unused part of methane is discharged into the atmosphere. The paper presents how the amount of methane released in individual mines of Jastrzębska Spółka Węglowa S.A. was shaped, with a division into methane released to the ventilation system and included in the demethanation system, taking into account the part used for economic purposes and the part discharged to atmosphere. The research material covers the years 2017-2019.
Social Utopias and Engineering Design
Authors: Czajkowski Waldemar 
Published: August 2020

Abstract
A paradox of our time is identified: on the one hand – the development of one global system (ecological, technological and social), on the other hand – the still increasing “balkanization” of science. The dynamics of this systems is a source of well-known numerous global problems. Its possibly effective solution needs adequate knowledge about the system. For this reason, counteraction to “balkanization” of science is of great practical importance. And this counteraction should comprise not only development of “transboundary” sciences (such as biochemistry or social psychology) but also establishing and developing links between very distant disciplines. This text is intended as a contribution to linking social and engineering sciences. The notion of design plays the central role in this text. Its meaning in the engineering sciences. The notion of utopia has been chosen as a partial counterpart to the term of engineering design. This notion was defined using a concept of possible world – taken from modal logic. It encompasses two ideas: this of design and that of prediction, It is claimed that we need many utopias and that their plurality is of fundamental importance for protecting us against the threats of utopianism. The paper suggests that social utopias can play a heuristic role in engineering design (particularly in the initial phase of defining technological problems), and – on the other hand – that the theory of engineering design can be supportive for, badly needed, development of methodology of utopias creation.
Examining the Interrelation Between Job Autonomy and Job Performance: A Critical Literature Review
Authors: Khoshnaw Saifaddin , Alavi Hamed 
Published: August 2020

Abstract
This paper aims at examining the role of job autonomy in organizations and its relation with employee performance. This will be achieved by providing a critical review of the subject matter in existing management literature. In recent years, the concept of job autonomy has gained an increasing importance in practice of Human Resource Management. Even some studies claimed that job autonomy directly affects job performance and some of its indicators including job satisfaction, motivation, job engagement and job commitment. As a result, current paper aims at studying the effect of job autonomy on employee performance by critically reviewing existing work of human resource scholars. Main research questions approached by authors include: Is there any meaningful relationship between job autonomy and employee’s job performance distinguished in existing literature? If yes, what impact can be expected from job autonomy on employee’s job performance?
Role of Antigen Determinants a and B of AB0 Blood Group System in Human Disease Development (Mini Review)
Authors: Gilmiyarova F.N. , Kuzmicheva V.I. , Kolotyeva N.A. , Kuznetsova O.Yu. 
Published: August 2020

AbstractABO blood group system discovery was an important step in development of such areas as transplantation and transfusion medicine. At the same time understanding of fundamental role of antigenic determinants in physiological functions maintenance and pathological conditions development remained unexplained for a long time. Today it is known that A and B antigens are widely represented not only on erythrocytes membrane but also on other cells and tissues: platelets, epithelial tissue, oral and spermal fluids. Earlier authors studied metabolic and coagulation profiles, as well as blood cells composition in clinically healthy individuals on more than 180,000 donations, thus revealing group-specific features for each blood group. The review provides synthesis of association of such pathological conditions as coronary heart disease, thromboembolic complications, tumors of various localizations, inflammatory and destructive oral diseases, psychiatric and some infectious diseases with the presence or absence of antigenic determinants A and B. 0 (I) blood group carriers are more resistant to development of diseases, excepting H. pylori-associated gastrointestinal diseases. Carriers of “antigenic” blood groups A (II), B (III), AB (IV) are more susceptible to infections, cardiovascular diseases, and oncological diseases. The data presented may contribute to a personalized patient approach formation, based on antigen-associated biological variability of various signs in norm and pathology.
Hydroelectric centrals’ impact on territorial sustainability: analysis in southern Colombia
Authors: Ramírez Duván , Velasco Luis Alfredo Muñoz 
Published: August 2020

Abstract
This study evaluates sustainability in the Huila Department in southern Colombia following the construction of two hydroelectric plants. This evaluation is based on the Sepúlveda (2008) sustainability analysis model, which is especially suited to Latin American rural territories. The importance of this evaluation of sustainability in the Huila region stems from the environmental crisis that, according to various regional stakeholders, has been caused by the construction of the two hydroelectric plants. The results of this investigation indicate that the sustainability of the region is at risk because of these hydroelectric projects.
The attitude of Polish youth towards migrants, and educational process planning in geography teaching Using the example of selected groups of students from Poznań and Warsaw
Authors: Awramiuk-Godun Alina , Górny Janusz 
Published: August 2020

Abstract
The political destabilization in the Middle East has caused such a significant wave of migration to European countries, that the situation has evolved into a migration crisis. Research on the awareness and opinions on mass migration conducted among a selected group of Polish youth show how differentiated attitudes are – from moderately positive to extremely negative. At the same time, almost everyone signaled that schools’ engagement in providing students with solid knowledge on migration was insufficient. In this context, this paper discusses the importance of taking account of students’ opinions in the planning of educational processes. If schools are to influence the attitudes of the young, they should create a space for dialogue and for students to express their opinions and values. Such activities, together with solid knowledge, will allow educational and pedagogical objectives to be reached.
Determination of the Lift-Off Speed in Foil Bearings Using Various Measurement Methods
Authors: Bagiński Paweł , Żywica Grzegorz 
Published: August 2020

Abstract
One of the most important parameters describing the operation of foil bearings is the speed at which—under certain load conditions—a lubricating film is created. Knowing the value of this parameter, one can determine the nature of the operation of a rotor that is supported by these bearings. The lift-off speed is usually determined during the run-up and coast down of the rotor using the measured moment of friction as a function of the rotational speed. In this article, this method has been compared with other measurement methods proposed by the authors. The first method consisted in recording the temperature of the bearing's top foil during its operation, while the second method was based on measuring the current-voltage characteristics of the electro-spindle used in the drive system. As a result of the conducted research, a simple method that allows determining the lift-off speed in foil bearings was proposed. This method can be applied to various types of high-speed machines, such as turbocompressors or microturbines.
Modernization of Centrifugal Chlorine Compressor
Authors: Kryłłowicz Władysław , Grapow Filip , Kantyka Krzysztof , Kozanecki Zbigniew 
Published: August 2020

Abstract
In this paper modernization of a three-stage chlorine centrifugal compressor, in which chlorine is pressurized has been described. Machine nominal mass flow has been increased by 20% and the pressure rise has remained almost unchanged. New construction concept has been chosen basing on analysis of different design variants. Calculations were conducted with one-dimensional method with usage of in-house developed code. Algorithms implemented to this program are based on empirical studies and wide experience in compressor modernization and design. Moreover, results of modified machine acceptance test results, which satisfies VDI norm 2045/ISO 5389 has been presented.
An Analysis of an Advanced Compressed Air Energy System (CAES) Using Turbomachinery for Energy Storage and Recovery and for Continuous On-Site Power Augmentation as an Air Brayton Cycle
Authors: Japikse David , Di Bella Francis A. 
Published: August 2020

Abstract
A thermodynamic analysis of an advanced CAES for Distributed Power Generation (DPG) is presented that utilizes turbomachinery for energy recovery, but also gives continuous power generation to augment on-site power. The advanced CAES uses renewable energy such as wind power and solar PV in the power range of 1500 to 2500 kW plus recuperation of waste heat from the existing on-site prime mover to improve the utility of the energy storage system. The proposed system also utilizes battery storage to maintain high energy density storage, preferably without the need for costly electrical rectifying and inversion systems to improve the stabilization of power generation. This proposed system may be thought of as a “cross-over” system that combines CAES technology with electric battery storage technology, particularly if the stored electric power is used directly as D.C. power at an industrial facility. The direct use of stored energy from a battery as heat input to the proposed “cross-over” system also may be considered in some limited applications. The ideal application of the proposed system is for isolated DPG systems perhaps in remote sites utilizing “power islands” of renewable energy augmented with on-site fossil fuel prime mover, power generation systems. The proposed “cross-over” system enables higher reliability, faster response to transient power loads, and the efficient use of renewable energy, as well as heat recovery from conventional prime mover systems that are on site.
Boundary Element Modeling of Pyroelectric Solids with Shell Inclusions
Authors: Sulym Heorhiy , Pasternak Iaroslav , Pasternak Viktoriya 
Published: August 2020

Abstract
The paper presents general boundary element approach for analysis of thermoelectroelastic (pyroelectric) solids containing shell-like electricity conducting permittive inclusions. The latter are modeled with opened surfaces with certain boundary conditions on their faces. Rigid displacement and rotation, along with constant electric potential of inclusions are accounted for in these boundary conditions. Formulated boundary value problem is reduced to a system of singular boundary integral equations, which is solved numerically by the boundary element method. Special attention is paid to the field singularity at the front line of a shell-like inclusion. Special shape functions are introduced, which account for this square-root singularity and allow accurate determination of field intensity factors. Numerical examples are presented.