bluuebunny/crossref_metadata_2025_split huggingface dataset:
Calling out for the Possible! Is it Our Chance to Make it Right?
Authors: Mangion Margaret , Valquaresma Andreia 
Published: December 2023

Abstract
In today’s world, humanity is confronted with an increasing number of complex challenges. The Anthropocene’s core tenet, the impact of humans on the world, leads us to aspire to a more sustainable future, putting the possible at the centre of societal development. Educational contexts provide a unique platform for future citizens to engage with the possible, calling for the advancement of strategies that can intentionally contribute to expanding opportunities for embracing the possible. This commentary explores how contemporary challenges can be a driving force to redesign educational contexts to effectively embed the possible in their practices and pedagogies, in an effort to raise awareness and elicit a sense of urgency about the importance of the possible as a field of study.
Automatic simplification of the geometry of a cartographic line using contractive self-mapping – illustrated with an example of a polyline band
Authors: Bac-Bronowicz Joanna , Banasik Piotr , Chrobak Tadeusz 
Published: December 2023

Abstract
The present article is another attempt to adapt map geometry to automatic digital cartography. The paper presents a method of digital polyline generalisation that uses contractive self-mapping. It is a method of simplification, not just an algorithm for simplification. This method in its 1996 version obtained a patent entitled “Method of Eliminating Points in the Process of Numerical Cartographic Generalisation” – Patent Office of the Republic of Poland, No. 181014, 1996. The first results of research conducted using the presented method, with clearly defined data (without singular points of their geometry), were published in the works of the authors in 2021 and 2022.
This article presents a transition from the DLM (Digital Landscape Model) to the DCM (Digital Cartographic Model). It demonstrates an algorithm with independent solutions for the band axis and both its edges. The presented example was performed for the so-called polyline band, which can represent real topographic linear objects such as rivers and boundaries of closed areas (buildings, lakes, etc.). An unambiguous representation of both edges of the band is its axis, represented in DLM, which can be simplified to any scale. A direct consequence of this simplification is the shape of the band representing the actual shape of both edges of the object that is classified in the database as a linear object in DCM.
The article presents an example performed for the so-called polyline band, which represents real topographic linear objects (roads, rivers) and area boundaries. The proposed method fulfils the following conditions: the Lipschitz condition, the Cauchy condition, the Banach theorem, and the Salichtchev’s standard for object recognition on the map. The presented method is objective in contrast to the previously used approximate methods, such as generalisations that use graph theory and fractal geometry, line smoothing and simplification algorithms, statistical methods with classification of object attributes, artificial intelligence, etc. The presented method for changing the geometry of objects by any scale of the map is 100% automatic, repeatable, and objective; that is, it does not require a cartographer’s intervention.
In Search of the Best Technological Solutions for Optimal Biobutanol Production: A Multi-Criteria Analysis Approach
Authors: Berzina Indra , Mika Taras , Spalvins Kriss 
Published: December 2023

Abstract
Rising energy demands and the environmental impact of fossil fuel combustion have promoted a growing interest in alternative fuel sources. Biobutanol is a promising biofuel that can be used as a partial or complete substitute for petrol in unmodified internal combustion engines. It can be produced through a microbiological process called ABE fermentation. Currently, its production is uncompetitive in the market, but researchers are still working on solutions to improve the technology. This paper used a multi-criteria decision analysis method to evaluate different alternatives for biobutanol production: microorganism strain, agro-industrial waste substrate as process feedstock, bioreactor type and extraction method. It was determined that C. beijerinckii and C. saccharoperbutylacetonicum have great potential for being used for efficient biobutanol production. Cheese whey is a promising residue for being used in the fermentation medium. Other residues evaluated in the paper gained similar results as being “close to ideal”. Fed-batch with immobilized cells was chosen as the most promising fermentation method. It showed the greatest prospects as an optimal way to produce butanol. And, finally, adsorption and liquid-liquid extraction methods were identified as the most promising for ABE product extraction in comparison to others. Identified combinations of optimal solutions for microorganisms, fermentation methods, substrates and extraction techniques should be further evaluated in the laboratory setting.
Translanguaging in Teaching and Learning of English at University Level: The Perspectives of Ukrainian Students and their Teachers
Authors: Cvilikaitė-Mačiulskienė Jurgita , Daukšaitė-Kolpakovienė Aurelija , Gvazdikaitė Gabrielė , Linkevičiūtė Eglė 
Published: December 2023

Abstract
Classrooms at all levels of education are becoming more diverse, as they include more and more multilingual and multicultural students. Their teachers start understanding that, especially in foreign language classes, monolingual approaches to teaching and learning are not effective anymore, and search for other pedagogical techniques and practices that would involve their students’ linguistic repertoires as an asset in their classes. This study aimed to learn about the attitudes towards and experiences of the use of other languages in the English classroom by including the perspectives of English teachers and their Ukrainian students who, having fled their home country due to the war against Ukraine or having chosen to participate in student exchange, came to study at Vytautas Magnus University in Kaunas, Lithuania. Two online questionnaires including open and closed ended questions were used to gather data. Thus, the study was both quantitative and qualitative. Even though several literature review sections in this article describe a switch from monolingual to a more holistic paradigm that includes translanguaging, this and other terms employed to describe the use of other languages were not introduced to the research participants. The English teachers’ and their Ukrainian students’ attitudes towards and experiences of the use of other languages in the English classroom are first looked at separately and then compared in the concluding section. The findings revealed that both Ukrainian students (58.3%) and teachers (84.2%) have experience of other languages being used in their English classroom. They also agree that translation into the language that students understand is used as a strategy helping the students to understand grammar and vocabulary, yet the students indicated gesturing as a strategy used to explain unknown vocabulary. Other strategies related to the use of other languages were also mentioned and described. The teachers and the students pointed out that Russian and Lithuanian were the most frequently employed other (than English) languages in their English classroom, even though the teachers believed they used mostly Russian, whereas the students believed their teachers mostly used Lithuanian.
Analysis of Foreign Language Teachers´ Attitudes Towards Digital Teaching in the European Union Countries
Authors: Klimova Blanka , Pikhart Marcel , Fronckova Katerina , Sanchez-Stockhammer Christina , Stukalina Yulia , Iruskieta Mikel , Dağdeler Kübra Okumuş , Lejot Eve , Parmaxi Antigoni , Rodríguez Rocío Bartolomé , Pareja-Lora Antonio 
Published: December 2023

Abstract
In the present era, both learning and teaching, including foreign language learning (FLL) and teaching, are being radically influenced by a massive implementation of digital technologies. The purpose of this study is to analyze foreign language teachers’ attitudes towards the use of technologies in foreign language teaching across Europe and to identify clear implications for their efficient implementation. The methodology of this study includes a mixed-method research design (quantitative and qualitative) with a survey conducted with altogether 234 foreign language (FL) teachers from different universities across Europe. The results clearly show that FL teachers generally have a positive attitude towards the use of technologies in their classes and that they frequently use them in their teaching since they can make students more engaged in learning a foreign language. In fact, the FL teachers have always been at the forefront of innovative approaches to teaching and learning. In spite of this, they admit that they would welcome more professional support from the management of their home institutions and demand training in the use of new technologies. The results of the research also indicate that special attention should be paid to the lack of personal contact, students' reactions, and the expression of emotions, which is difficult and almost impossible to achieve through the use of digital media. These findings are unique since they aim specifically at current FL teachers´ attitudes and needs across Europe and can be utilized by stakeholders and FLL course designers. Moreover, they can also be extended to a larger scale, i.e., the global level.
Thermal Operating Window in Selective Laser Melting Processes
Authors: Kozak Jerzy , Zakrzewski Tomasz , Witt Marta , Dębowska-Wąsak Martyna 
Published: December 2023

Abstract
Selective laser melting (SLM) is one of the most effective methods of additive manufacturing (AM). It is used to manufacture products with very complex geometries using a wide range of materials. Practical process conditions are limited by the occurrence of undesirable melting instabilities that degrade the surface quality and lead to product defects. These disadvantages are related to the thermal limitations of the SLM process. The lower thermal limit is due to the need to completely melt the powder layer and partially remelt the underlying layer again to ensure proper bonding between the layers. Exceeding the upper thermal limit in the molten metal pool may cause extensive evaporation, boiling and ejection of molten metal droplets outside the melting area. The article presents an approach and methodology that enable the determination of thermal limits and the operating window of SLM/selective laser sintering (SLS) processes in a relatively simple way. The studies have been performed using various settings of SLM process parameters. The usefulness of the preliminary determination of thermal limitations and approximate prediction of operating window of SLM has been confirmed experimentally and by more accurate computer simulation.
Automated Eddy Current System for Aircraft Structure Inspection
Authors: Lysenko Iuliia , Kuts Yurii , Petryk Valentyn , Malko Volodymyr , Melnyk Andrii 
Published: December 2023

Abstract
Aircraft part diagnostics are crucial during both production and maintenance, with eddy current nondestructive testing (ECNDT) being the method of choice due to its cost-effectiveness, informativeness, productivity, and reliability. ECNDT excels regardless of surface condition or coatings. It’s employed for diagnosing various aircraft components, necessitating diverse transducer types, excitation modes, and advanced signal processing. To improve ECNDT, this article explores integrating harmonic and impulse excitation modes in a single tool to enhance informativeness. Building upon a wireless eddy current system, the authors propose a comprehensive method for processing and displaying information suitable for object condition monitoring systems. The system includes automated transducer mode control and experimental data processing algorithms. The constant expansion of tested objects and new materials underscores the need to enhance the theoretical foundations of eddy current non-destructive testing, refine signal processing techniques, and identify informative signs. This demands the development of new automated ECNDT tools, and this article offers a promising avenue for improvement. The results include model and experimental tests of system components, showcasing the potential of this approach to enhance ECNDT effectiveness, automation, and informativeness in the realm of aircraft part diagnostics.
Improving Strapdown Inertial Navigation System Performance by Self-Compensation of Inertial Sensor Errors
Authors: Chernyak Mykola , Kolesnyk Vadym 
Published: December 2023

Abstract
Microelectromechanical systems (MEMS)-based strapdown navigation systems offer advantages such as small size, low cost and minimal power consumption. However, MEMS sensors are prone to significant low-frequency noise and poor bias repeatability, which can lead to navigational errors over time. These errors make them unsuitable for autonomous navigation applications, even with frequent recalibration. One way in which to solve this problem is by using the rotation modulation (RM) method. This approach is widely recognised but has only been successful with precise laser and fiber optic gyroscopes equipped with precise rotating platforms. This article focuses on the potential of adapting the RM method for the case of inexpensive MEMS sensors that can significantly improve navigation performance, while maintaining the benefits of microelectromechanical technologies. Potential issues of implementation were discussed, and corresponding requirements were formulated. The proposed optimal computation scheme was verified during static tests of the developed inertial measurement unit (IMU). Further steps in studying the adaptation of the RM method for MEMS sensors have also been outlined.
Numerical Modelling of Static Aeroelastic Deformations of Slender Wing in Aerodynamic Design
Authors: Bugała Pamela , Sznajder Janusz , Sieradzki Adam 
Published: December 2023

Abstract
The article presents the validation of two methods for analyzing the aerodynamic properties of the aircraft wing concerning aeroelastic effects. The first method is based on low-cost computational models (Euler–Bernoulli Beam Model and Vortex Lattice Method [VLM]). Its primary objective is to estimate the wing’s deformation early in the design stages and during the automatic optimization process. The second one is a method that uses solutions of unsteady Navier–Stokes equations (URANS). This method suits early design, particularly for unconventional designs or flight conditions exceeding lowfidelity method limits. The coupling of the flow and structural models was done by Radial Basis Functions implemented as a user-defined module in the ANSYS Fluent solver. The structural model has variants for linear and nonlinear wing deformations. Features enhancing applicability for real-life applications, such as the definition of deformable and nondeformable mesh zones with smooth transition between them, have been included in this method. A rectangular wing of a high-altitude long-endurance (HALE) aeroplane, built based on the NACA 0012 profile, was used to validate both methods. The resulting deflections and twists of the wing have been compared with reference data for the linear and nonlinear variants of the model.
IDENTIFIKASI MAKROZOOBENTOS SEBAGAI BIOINDIKATOR KUALITAS PERAIRAN DI PANTAI TELUK BENOA, BADUNG
Authors: Sutrisnawati Eka Ari , Arthana I Wayan , Windia Adnyana Ida Bagus 
Published: December 2023

Utilization of coastal waters for aquaculture activities or for other activities provides positive value for human welfare but can also provide the potential for reducing water quality. The decline in environmental quality can be seen from changes in components such as biology, chemistry, and beach physics. Changes in chemical and physical components cause sediment to decrease, which will affect the life of marine biotas, such as the community structure, especially the slow-moving and relatively settled biota on the bottom of the waters (macrozoobenthos). Macrozoobenthos are very appropriate to be used as an indicator of changes in water quality due to their benthic nature which is relatively silent or has low mobility so it is strongly influenced by the environment. The purpose of the study was to determine the structure of the macrozoobenthos community and the condition of seawater quality. There were 25 species of gastropods and 3 other classes. The macrozoobenthos species diversity index on the Benoa Bay Coast showed a moderate level of diversity with the highest value of 2.4576. The uniformity index at each station ranges from 0.0894 – 0.5337. The value of the dominance index ranges between 0.000004-0.7656. Based on the relative abundance, the macrobenthos community is dominated by the Gastropod class. The temperature values ??at each station were relatively the same, ranging from 29.3°C– 30.8°C, and the pH was in accordance with quality standards for macrozoobenthos growth. Some indicators of water quality are still below the quality standard threshold, but the concentration of phosphate (PO4) at all locations is already above the predetermined quality standard of 0.015 mg/L?.
Keyword: Macrozoobenthos; Bioindicator; Benoa Bay; Bali
Numerical Schemes and Stability Analysis for Fractional Models of Transient Uni- and Bidimensional flow in Petroleum Reservoirs
Authors: Do Carmo Wesley Pardinho , Santos Alexandre Ferreira , Lenzi Marcelo Kaminski , Fortuny Montserrat , Lenzi Ervin Kaminski 
Published: December 2023

Objective: To propose a modeling for the flow in oil reservoirs using Caputo’s definition of fractional derivative applied to the spatial coordinate of the problem. Furthermore, delimit a region of numerical stability for the explicit method of solving the model equations.

Methodology: Starting from the material balance in a differential control volume and the generalized Darcy's law, and coupling it with an equation of state, models describing flow in porous media were derived. A numerical solution scheme using an explicit discretization was proposed. For this purpose, the L1 method for approximating spatial fractional derivatives and finite difference approximation for temporal derivatives were employed..

Results and Discussion: Through the Von Neumann stability analysis, it was observed that the explicit solution schemes for the models are conditionally stable and dependent on the order of the fractional derivative. Additionally, numerical stability regions were constructed for one and two-dimensional transient schemes, revealing that the one-dimensional scheme is stable for , and the two-dimensional scheme is stable for
for all derivative orders between 0 and 1.

Implications of the research: Historically, flow models in petroleum reservoirs have been based on the application of Darcy's law; however, its use is limited due to some constraints. Recently, fractional calculus has played a significant role in generalizing and obtaining more accurate models in various application areas. In this context, Darcy's law has been generalized, allowing for the derivation of fractional models that are more suitable for describing flow in porous media. These models, in general, are solved using a numerical method, and it is crucial to understand the stability region of the method for their resolution.
The Use of WhatsApp for Speaking Activities: Teacherâ€™s Voices at Islamic Junior High School
Authors: Marzulina Lenny 
Published: December 2023

Background:
The form of information technology development that can be used as a learning medium during Covid 19 Pandemic is WhatsApp. This WhatsApp is widely used to communicate, both interpersonal communication and group communication. Thatâ€™s why teachersâ€™ perceptions on the use of WhatsApp in speaking activities needed to be revealed.
Methodology:
The qualitative method with a case study research design was used in this study. The participants of this study were two teachers of English taken by using total sampling technique. The data obtained from interview were analysed by using thematic analysis.
Findings:
It was found that (a) WhatsApp could build the studentsâ€™ interest towards English; (b) WhatsApp made the teachers easier to share speaking materials by using WhatsApp; (c) WhatsApp made the teachers easier to control the class. Meanwhile, the limitations were found that (d) WhatsApp did not build the studentsâ€™ confidence in speaking English; (e) WhatsApp did not promote studentsâ€™ independence in learning speaking; (f) WhatsApp did not create enthusiast atmosphere among students; (g) WhatsApp made the students became less active in learning English; (h) WhatsApp did not make the students pay attention to learning English; and (i) WhatsApp persuaded the students to copy-paste the task.
Conclusions:
Both benefits and limitations were found on the use WhatsApp in speaking activities of as perceived by the teachers.
Originality:
This study tries to find out teachersâ€™ perceptions on the use of WhatsApp in speaking activities during COVID-19 Pandemic as never been conducted.
Keywords : Teachersâ€™ Perceptions, WhatsApp, Speaking Activities
Isolated fourth ventricle craniopharyngioma: Representative case illustration and review of literature
Authors: Ahmed Nazmin , Azam Md. Isma 
Published: December 2023

Background:
Sella and suprasellar areas are frequently affected by craniopharyngiomas. In this article, eight occurrences have been documented. One is new, and the remaining seven are from previously published articles. Their prevalence in the posterior fossa without expansion from the suprasellar area is unusual.

Case Description:
We present a case of a primary 4th ventricular craniopharyngioma of the posterior fossa in a 16-year-old male with no association with Gardner’s syndrome. He presented with sudden deterioration of consciousness level and was diagnosed as having a homogeneously contrast enhancing lesion occupying the 4th ventricle with obstructive hydrocephalus. The patient underwent emergency placement of external ventricular drain followed by complete removal of the tumor on the next day by midline suboccipital craniotomy with telovelar approach. Histopathological features were consistent with the adamantinomatous variety of craniopharyngioma. He had complete neurological recovery and no evidence of tumor recurrence in 1-year follow-up.

Conclusion:
The craniopharyngioma in our case was distinct because it was a solid tumor with no cystic component, exhibited homogeneous contrast enhancement in neuroimaging, developed in the fourth ventricle, and reached the level of foramen magnum, features that had rarely been documented previously. We also reviewed the literature on reported cases of 4th ventricular craniopharyngioma to strengthen knowledge in this area and highlight the embryological basis of ectopic craniopharyngioma.