Search Results (443)

The dynamics of port-Hamiltonian systems is based on energy balance principles (the first law of thermodynamics) embedded in the structure of the model. However, when dealing with thermodynamic subsystems, the second law (entropy production) should also be explicitly taken into account. Several frameworks were developed as extensions to the thermodynamic domain of port-Hamiltonian systems. In our work, we study three of them, namely irreversible port-Hamiltonian systems, entropy-based generalized Hamiltonian systems, and entropy-production-metric-based port-Hamiltonian systems, which represent alternative approaches of selecting the state variables, the storage function, simplicity of physical interpretation, etc. On the example of a simplified lumped-parameter model of a heat exchanger, we study the frameworks in terms of their implementability for an IDA-PBC-like control and the simplicity of using these frameworks for practitioners already familiar with the port-Hamiltonian systems. The comparative study demonstrated the possibility of using each of these approaches to derive IDA-PBC-like thermodynamically consistent control and provided insight into the applicability of each framework for the modeling and control of multiphysics systems with thermodynamic subsystems. Full article

This study interrogates whether Augmented Reality (AR) enhances vocabulary and content acquisition within Content and Language Integrated Learning (CLIL), situating the question in the broader debate on how immersive, multimodal technologies shape achievement and engagement. This study’s novelty lies in its direct AR-versus-print comparison in a real CLIL classroom using markerless, smartphone-based technology. Using a mixed-methods, classroom-based experiment, we drew on a convenience sample of 129 secondary students (ages 16–18), assigning them to an AR intervention (n = 64) or a print-based control (n = 65). Both cohorts received parallel instruction covering identical objectives and materials; vocabulary attainment was gauged using matched pretest and post-test measures, while engagement, attitudes, and perceived usefulness were captured through paired pre- and post-surveys and open-ended prompts. Quantitative analyses compared change scores across conditions and were complemented by qualitative summaries of learner comments. Results indicate that exposure to AR exerted a positive influence on learners’ engagement and supported learning processes, with perceptible shifts in students’ views of AR between baseline and post-intervention; nevertheless, effects were heterogeneous across instruments, items, and subgroups, suggesting that benefits accrued in a targeted rather than uniform fashion. Compared to the print-based group, students using AR demonstrated greater gains on visually supported vocabulary and content items, while other items showed no significant differences between groups. We conclude that AR constitutes a promising pedagogical resource for CLIL, capable of scaffolding vocabulary/content development and motivating participation, while the observed variability underscores the need for principled, context-sensitive integration. Future work should specify boundary conditions—such as task type, prior proficiency, cognitive load, and technology familiarity—and employ robust mixed-methods designs to determine for whom, and under which instructional circumstances, AR yields the greatest and most sustainable gains. Full article

The evidence base supporting practices to widen participation in higher education, such as campus visits and multi-intervention programs for younger students, remains limited. In order to address this gap, this exploratory study examines the impact of repeated university campus exposure on primary-aged children in the UK. We studied the influence of a campus tour on the views of a group of 78 primary school children who had visited the setting on a previous occasion. Our cohort (32M, 45F, aged 10–11) was drawn from schools with high populations of pupils from low-socioeconomic status backgrounds. Using a pre- and post-visit survey design, we assessed changes in perceptions following a second campus tour, building on a prior visit. We found that while one visit was enough to establish basic perceptions—for example, a university is big not small—a second visit allowed participants to see a different side of the university experience, adding nuance, expanding university-related vocabulary, and increasing comfort with the campus environment. Notably, repeat visits strengthened intentions to pursue higher education. We conclude that multiple campus visits benefit low-participation groups by fostering familiarity and exposing younger pupils to different motivations for university attendance. While this study provides a useful foundation from which to explore this area, further work is needed to address limitations such as the small sample size and the UK-specific context. Full article

The aim of this study was to examine pre-service teachers’ beliefs about the executive functions (EFs) of gifted and talented (G&T) students. To accomplish this, 580 pre-service teachers were asked to think of a hypothetical G&T child and a hypothetical non-G&T child and rate their EFs using the Childhood Executive Functioning Inventory (CHEXI, Spanish version). We determined the mean differences between the EF ratings for G&T and non-G&T children. We also analyzed the differences according to the gender attributed to the G&T student, training in G&T, and familiarity with a G&T person. The results showed that G&T students were perceived as better than non-G&T students in working memory, planning, regulation, and inhibition, which is in line with previous outcomes when using performance tasks but not when using parents’ and teachers’ rating scales. Therefore, despite possessing theoretical knowledge, teachers may still fail to identify gifted students in real-life educational contexts. Full article

This article examines how Oaxacan chefs from Columbus, Ohio make their home and build their success. Prior scholarship shows how chefs establish home to offer themselves a springboard for future success, how chefs foster home through cooking and enjoying familiar dishes, and that food is only truly ‘at home’ when found outside of its original context. Ethnographic interviews with Oaxacan chefs working in food hall stands, taco trucks, bakeries, and restaurants in Columbus demonstrate how they move and adjust to the city; obtain their eateries; and shape their menus and future goals. Oaxacan chefs in Columbus have cultivated a sense of belonging and established a foothold in the city by employing strategies that combine preservation of cultural heritage and adherence and adjustment to local tastes. Full article

In the current era of rapid technological change, where artificial intelligence and quantum computing are reshaping knowledge, quantum literacy in high schools is becoming increasingly relevant. An understanding of quantum science is now important for fostering future readiness to prepare students for the future, as it directly affects research, technology and innovation. Introducing quantum computing through educational tools and interactive platforms in schools will make quantum science accessible, equipping students with the necessary skills to understand and participate in future developments. This work investigates the necessity of quantum literacy among secondary education students, as well as their perceptions and understanding of basic concepts of quantum physics. Prior to data collection, students participated in two 90 min educational presentations that introduced fundamental principles of quantum physics through quantum computing and its applications, with an emphasis on cryptography and key distribution. Then, through the application of a specially designed questionnaire, data were collected from 78 students of different kind of schools and background and analyzed quantitatively and qualitatively. The results showed positive trends in students’ responses regarding their familiarity with quantum literacy and their understanding of fundamental principles such as superposition and entanglement. In addition, the analysis highlighted students’ interest in quantum computing and technology and its potential applications. This study highlights the need to integrate quantum literacy into the secondary education curriculum in order to foster scientific thinking and prepare students for the challenges of the quantum era. The educational intervention with the two presentations seemed to contribute positively to the development of students’ quantum literacy. Full article

Collaboration is essential in today’s technology-driven world, where IT professionals work in teams to solve complex problems. To mirror industry practices, universities have increasingly adopted project-based learning approaches, requiring students to work collaboratively on tasks such as software development. However, while considerable research has examined group project outcomes, little is known about the decision-making processes students use to select their partners, particularly in software development. This study, therefore, explores the factors influencing IT students’ choices of group project partners and how these choices reflect broader learning priorities. A qualitative approach was employed, collecting open-ended responses from 103 software development students through individual interviews conducted via MS Teams. Thematic analysis was used to identify recurring patterns in the data. Five main themes emerged: Personal Relationships & Familiarity, Work Ethic & Dedication, Communication & Teamwork, Reliability & Accountability, and Technical Skills & Competence. The findings indicate that students prioritise interpersonal trust, reliability, and communication skills over technical ability when selecting partners. This suggests that students view effective collaboration as grounded more in work ethic and relational qualities than in coding proficiency alone. Full article

In this tutorial, I discuss how to model a neutron star from the Quantum Hadrodynamics microscopic approach. After a brief discussion about hydrostatic equilibrium, I discuss the role of each meson of the model and how to calculate the corresponding equation of state and the expected values. Each meson is introduced individually. Its effects are analyzed from both an analytical and a numerical point of view. To explicitly show the effects of a given meson, the coupling constant is varied in an arbitrary range before being fixed to reproduce well-known constraints. This work is intended for late undergraduate students as well as early graduate students. The equation of states is obtained from the statistical mechanics formalism, which is more familiar to students at this stage of their research career, instead of the traditional quantum field theory formalism. Full article

This work presents a system that integrates infrared thermography with two specially designed devices to enhance learning and promote sustainability awareness among 14-year-old secondary school students in Spain. An experimental and a control group were included in an experimental research design. While the control group attended conventional problem-solving classes, the experimental group participated in practical exercises utilizing thermographic cameras and two custom-built devices. Pretests and post-tests were administered to evaluate students’ theoretical and practical understanding of infrared radiation, physics, sustainability, and energy efficiency. A gender-based stratified analysis was conducted to investigate the possible impact of gender on learning outcomes and to obtain information for encouraging female participation in STEM professions to guarantee objective results. The results revealed statistically significant improvements in post-test scores compared to pretest results, demonstrating enhanced learning outcomes. The experimental group outperformed the control group, confirming the effectiveness of the innovative proposed methodology for learning complex scientific concepts. Additionally, students in the experimental group displayed high levels of curiosity, intrinsic motivation, and satisfaction, as observed through participant observation and a perception survey. While the survey indicated favorable responses regarding satisfaction, self-confidence, and learning, scalability received mixed opinions, potentially due to limited student familiarity with thermography’s broader applications. Overall, these findings underscore the potential of thermography as a powerful educational tool to improve scientific literacy and sustainability awareness. Future research should expand on this approach, exploring applications emphasizing critical thinking and problem-solving skills while leveraging thermographic technology to promote interdisciplinary learning. Full article

The Apple TV+ series Severance (2022–present) offers a dystopian portrayal of workplace life that intensifies real-world dynamics of control, boundary management, and identity regulation. This paper analyzes Severance as a speculative case study in organizational theory, treating the show’s fictional world as a site for conceptual reflection. Drawing on critical management studies and labor process theory, we examine how mechanisms of control, the regulation of work–life boundaries, and the fragmentation of autonomy and subjectivity are depicted in extreme form. We argue that fiction—particularly speculative satire—can serve as a tool of theoretical production, not merely illustration. Rather than restating familiar critiques, Severance allows us to see workplace norms with renewed clarity, surfacing the moral and psychological consequences of surveillance, coercion, and instrumentalized consent. A methodological note outlines our interpretive approach to narrative fiction, and a discussion of implications situates the analysis within broader debates about organizational ethics, resilience, and critique. Full article

In 1978, Brian Kernighan and Dennis Ritchie insisted that the first program to write in a new language is one to print the words “hello, world.” From then until now, “hello, world” has frequently been the first exercise in introductory programming courses. On one hand, this does seem like a good first program because it makes something familiar—a greeting—appear on the screen. On the other hand, it is extremely strange. How can it be understood as a greeting? Who is greeting whom? Unfortunately, the bulk of formal means for defining programming languages provides very little help for assigning a meaning to the “hello, world” program. It is argued that the weakness of older theories and methods of programming language semantics is due to the historical, disciplinary segregation (in logic, semiotics, and linguistics) of semantics as a study apart from syntax and pragmatics. Drawing from both more recent work in programming language semantics that addresses side effects and on speech-act-based programming language design, this paper proposes a possible reintegration of semantics and pragmatics in order to better define the meaning of “hello, world” and the programming languages used to produce speech acts more generally. Full article

Background/Objectives: Childhood cancer leads to significant physical, cognitive, and psychosocial consequences that adversely affect the development and quality of life. Occupational Therapy (OT) has the potential to mitigate these effects. However, its integration into pediatric oncology care in Spain remains limited and underexplored. This study aims to examine the availability, characteristics, and perceived impact of OT services within pediatric oncology units across Spain and to identify key barriers to their implementation. Methods: A descriptive, cross-sectional study using a mixed-methods approach was conducted. An online questionnaire was distributed to healthcare professionals working in pediatric oncology units nationwide. Quantitative data were analyzed using descriptive statistics, Fisher’s exact test, and odds ratios with 95% confidence intervals to explore associations. Effect sizes were calculated using Cramér’s V where applicable. Qualitative responses underwent inductive thematic analysis. Results: A total of 42 hospital centers from 12 autonomous communities participated. Only 16 reported having OT services in pediatric oncology, with notable regional disparities. A significant proportion of respondents were unaware of the integration of OT in their institutions. Identified barriers included lack of resources, insufficient specialized training, and limited institutional recognition of OT. Nonetheless, professionals familiar with OT interventions reported positive outcomes, particularly in improving patients’ functional autonomy, emotional well-being, and social participation. Conclusions: OT remains insufficiently integrated into pediatric oncology care in Spain. To optimize the quality of care, it is essential to address educational, structural, and institutional challenges and promote OT as a key component of multidisciplinary teams. Full article

Axis definition plays a key role in the establishment of animal body plans, both in normal development and regeneration. The cnidarian Hydra can re-establish its simple body plan when regenerating from a random cell aggregate or a sufficiently small tissue fragment. At the beginning of regeneration, a hollow cellular spheroid forms, which then undergoes symmetry breaking and de novo body axis definition. In the past, we have published related work in a physics journal, which is difficult to read for scientists from other disciplines. Here, we review our work for readers not so familiar with this type of approach at a level that requires very little knowledge in mathematics. At the same time, we present a few aspects of Hydra biology that we believe to be linked to our work. These biological aspects may be of interest to physicists or members of related disciplines to better understand our approach. The proposed theoretical model is based on fluctuations of gene expression that are triggered by mechanical signaling, leading to increasingly large groups of cells acting in sync. With a single free parameter, the model quantitatively reproduces the experimentally observed expression pattern of the gene ks1, a marker for ‘head forming potential’. We observed that Hydra positions its axis as a function of a weak temperature gradient, but in a non-intuitive way. Supposing that a large fluctuation including ks1 expression is locked to define the head position, the model reproduces this behavior as well—without further changes. We explain why we believe that the proposed fluctuation-based symmetry breaking process agrees well with recent experimental findings where actin filament organization or anisotropic mechanical stimulation act as axis-positioning events. The model suggests that the Hydra spheroid exhibits huge sensitivity to external perturbations that will eventually position the axis. Full article

What can hybridity teach us? The answer I posit is–like water–to embrace movement in all its forms. We are currently experiencing the sixth mass extinction event on earth and yet few scholars give prolonged attention to how we are to sustainably move our human inheritances forward on this increasingly uninhabitable planet. Reflecting on the work of transnational poets, specifically South Korean poet Kim Hyesoon translated through Korean American poet Don Mee Choi and Lebanese American poet Etel Adnan, we are reminded of the myriad ways in which humans can move and survive in a foreign yet familiar world. This paper finds its support in the confluence of transnational contemporary feminist poetics, formalism, environmentalism, and posthumanism. Through the use of various critical discourses, this paper considers how movement and its hybrid capacities offer a new understanding of contemporary North American poetics. In this sense, a poem should be viewed as a dynamic temporal cybernetic system, a vessel, full of energy, simultaneously pulsing with the changing movements and constrictions of everyday life. Full article

This paper explores the presence of Florus in Jerome’s works, with particular focus on the Vitae monachorum. Scholars of the Vita Pauli and Vita Malchi have identified passages where Jerome would employ words or expressions from Florus (no such evidence appears in the Vita Hilarionis). The significance of these lexical borrowings is assessed here. Jerome’s knowledge extends not only to Florus’ Epitome, but also to the fragmentary treatise Vergilius orator an poeta (whose attribution to the same Florus remains debated). If intertextual analysis allows for the investigation of an author’s engagement with another one, there are indications that Jerome may have been familiar with this text as well. This paper provides a comparative analysis of passages in Jerome and Florus, discussing lexical borrowings, sources, rhetorical features, and individual words and expressions, including those drawn from other authors and works. Full article