Search Results (10,530)

Thermodynamics is commonly presented as a theory of macroscopic systems in stable equilibrium, built upon assumptions of extensivity and scaling with system size. In this paper, we present a universal formulation of the elementary foundations of thermodynamics, in which entropy and energy are defined and employed beyond equilibrium and without assuming extensivity. The formulation applies to all systems—large and small, with many or few particles—and to all states, whether equilibrium or nonequilibrium, by relying on carefully stated operational definitions and existence principles rather than macroscopic idealizations. Key thermodynamic concepts, including adiabatic availability and available energy, are developed and illustrated using the energy–entropy diagram representation of nonequilibrium states, which provides geometric insight into irreversibility and the limits of work extraction for systems of any size. A substantial part of the paper is devoted to the analysis of entropy transfer in non-work interactions, leading to precise definitions of heat interactions and heat-and-diffusion interactions of central importance in mesoscopic continuum theories of nonequilibrium behavior in simple and complex solids and fluids. As a direct consequence of this analysis, Clausius inequalities and the Clausius statement of the second law are derived in forms explicitly extended to nonequilibrium processes. The resulting framework presents thermodynamics as a universal theory whose concepts apply uniformly to all systems, large and small, and provides a coherent foundation for both teaching and modern applications. Full article

In recent years, we have seen a constant increase in the capabilities of walking robots, leading to early cases of their practical use, and a much broader application is expected in the near future. However, creating a robust control design (in the presence of disturbances and model uncertainties) for walking robots still remains a challenge. One challenging source of uncertainty is the combination of the contact constraints and the lack of full state information, which can potentially lead to an offset (a steady-state error) in the robot’s position, interfering with tasks requiring high accuracy and deteriorating the overall performance of the robot. This is further exacerbated by the presence of multiplicative model uncertainties, common to mobile robots. In this work, we introduce an $H_{\infty }$ control formulation designed to attenuate this type of disturbance. The proposed method can handle norm-bounded multiplicative uncertainties in the state, control, and disturbance matrices using a full-state static feedback control. The resulting control design procedure is a single semidefinite program which provides a large computational advantage over the alternative dynamic feedback controller methods. We demonstrate the effectiveness of the method in comparison with the alternative formulations in simulation. We demonstrate that the method can be effectively tuned using a regularization term in the cost function. We show that the upper bounds on the $H_{\infty }$ gain of the closed-loop system can be effectively tightened post control design. Full article

Gender-based violence in public transportation is a global phenomenon that restricts women’s rights and autonomy. Most of the documentation relies on harassment and physical aggression, but the subtle internalized mechanisms that reproduce gender inequities remain insufficiently analyzed. This study involves the concept of symbolic violence as an analytical category to unveil how resignation and normalization of violence perpetuate gender power relations and limit women’s mobility. A cross-sectional survey of 263 women aged 15–60 was conducted in Querétaro, Mexico, a rapidly growing city with significant mobility challenges. The questionnaire included items on perceptions of safety, violent experiences, responses to acts of violence, and prevention strategies. An inductive–abductive analysis was implemented to construct empirical indicators derived from Bordieu’s concept of symbolic violence and habitus. Findings reveal that fear, avoidance, and self-regulation are normalized responses to violence in public transport. Women implement strategies such as changing routes, limiting night travel, or increasing their expenses to access safer options. Six empirical indicators were identified: perceived insecurity as normality, resignation to harassment, bodily and emotional self-regulation, preventive reorganization of mobility, personal costs of safety, and collective inaction. In conclusion, the study demonstrates how symbolic violence operates through behaviors, actions, perceptions, and thoughts that reproduce inequities. Operationalizing symbolic violence provides a methodological and conceptual tool to advance gender equality and inform gender-sensitive mobility policies. Full article

Students attending tracks in mainstream schools with low achievement levels, special needs classes in mainstream schools, or classes in special needs schools, and/or with migration backgrounds are disadvantaged in the school-to-work transition. Their chances of finding an apprenticeship and the level of their person–job fit are lowered. Migration background was differentiated into four clusters characterized by the dimensions high/low warmth and high/low competence according to the Stereotype Content Model. Teacher support can potentially have remedial effects. Data was collected using student questionnaires and student achievement tests. Stepwise multilevel regression analyses using a sample of 1388 ninth graders in Switzerland showed that for students attending classes with low achievement levels and with migration backgrounds, the chances for a direct transition to VET and to establish a high person–job fit are reduced. Further, teacher support can improve the chances in the labor market for those students whose nationality is stereotyped as warm. Teacher support can also improve the person–job fit for students of nationalities stereotyped as warm and competent. Therefore, teacher support can reduce disadvantages in the school-to-work transition only for students whose nationalities are stereotyped as warm. Full article

Background: Frequent and short-term repeat visits place significant pressure on primary care-centered health systems, particularly in large metropolitan areas. Istanbul, with its high population density and heterogeneous sociodemographic profile, presents a unique context for understanding short-interval healthcare utilization dynamics. Objective: To examine short-term repeat healthcare utilization following an index primary care visit and to explore how district-level population and socioeconomic characteristics shape early post-visit care-seeking dynamics in a large metropolitan setting. Methods: This retrospective cohort study analyzed protocol records from 225 randomly selected FMUs across Istanbul. A total of 11,101 individuals who presented on 7 July 2025 were followed for 21 days, during which 26,743 healthcare contacts (index family medicine unit visits, recurrent FMU visits, and secondary/tertiary care visits) were captured. FMU repeat visits, higher-level utilization, district-level population density, and socioeconomic development level (SEGE-2022) were analyzed using descriptive statistics and district-level comparative analyses. Results: During the 21-day follow-up period, participants generated a total of 26,743 healthcare contacts. Across the full cohort, the median number of recurrent FMU visits was 0 (IQR 0–1), and the median number of secondary/tertiary visits was 0 (IQR 0–1). Among individuals who had repeat contacts, the median number of recurrent FMU visits was 1 (IQR 1–2), and the median number of secondary/tertiary visits was 1 (IQR 1–2). Repeat visits clustered in the first 7 days, whereas higher-level visits increased between days 10–21. Districts with lower SEGE status and high population density (e.g., Esenyurt, Bağcılar, Pendik, Küçükçekmece, Ümraniye) exhibited markedly higher repeat visit intensity. Spatial patterns indicated substantial clustering in western and socioeconomically disadvantaged districts. Multivariable regression analysis showed that visitor patient status was associated with higher secondary/tertiary care utilization (OR = 1.14, 95% CI 1.04–1.24), while higher SEGE scores were modestly associated with increased repeat FMU visits. Conclusions: Short-term repeat visits in Istanbul appear to be influenced not only by clinical needs but also by broader contextual factors such as socioeconomic disadvantage, population density, and health system organization. These findings suggest potential structural pressures within Türkiye’s primary care-centered system and highlight the potential value of district-specific interventions. Full article

Globalisation, accompanied by the rapid advancement of digital technologies, has become the bedrock of contemporary economies. However, the global digital divide has hindered many economies from enjoying the benefits of enhanced digitalisation. This study addresses the question: to what extent is there evidence of digital convergence or divergence among global economies, and what specific patterns of club clustering exist within the African continent? Employing a quantitative research design with secondary panel data from 123 countries (38 African), the study applies the Phillips and Sul convergence and club clustering algorithm to analyse digitalisation trends. The findings reveal that African countries exhibit significantly stronger within-club convergence dynamics than broader developing country groups, with Africa’s adjustment speed (σ = 2.5624) exceeding the Global South average (σ = 0.8394) by more than threefold. This indicates that African nations are following a similar ICT development trajectory and catching up with other global regions at an accelerated rate. However, the study identifies substantial digital inequality within Africa itself, as countries fail to converge to a single steady state, instead forming distinct convergence clubs. These results underscore that digitalisation follows a systematic and continuous process determined by both technological advancement and countries’ absorptive capacity to adopt these technologies. Full article

Background: Informal sewing workers are widely exposed to ergonomic and workload-related risks but remain largely excluded from formal occupational health protection, particularly in low- and middle-income countries. This study evaluated integrated physical and mental workload risks associated with WMSDs among informal sewing workers to develop contextually feasible preventive guidelines based on the Hierarchy of Ergonomic Control. Methods: A mixed-methods study was conducted among 150 informal sewing workers in Ubon Ratchathani Province, Thailand. Quantitative data were collected using a structured questionnaire, the Rapid Upper Limb Assessment (RULA), the Nordic Musculoskeletal Questionnaire (NMQ), and the NASA Task Load Index (NASA-TLX). Associations between sociodemographic characteristics, ergonomic risks, and WMSDs were analyzed using chi-square tests and correlation analysis. Qualitative data were obtained through a focus group discussion with key stakeholders to develop ergonomic control strategies guided by the HEC framework. Results: The majority of participants were female and middle-aged, with widespread exposure to high-risk ergonomic conditions, including prolonged sitting, repetitive tasks, and awkward postures. A high prevalence of WMSDs was observed, particularly in the neck, shoulders, and back. Younger workers and those with lower educational attainment experienced significantly higher ergonomic risk exposure and WMSD prevalence. NASA-TLX results indicated that physical demand and performance pressure were the main contributors to overall workload. Application of the HEC framework showed that elimination and substitution controls were the most effective strategies for reducing ergonomic risks, followed by engineering controls, while administrative measures and personal protective equipment were less effective. Conclusions: Informal sewing workers face substantial ergonomic and mental workload risks that contribute to a high burden of WMSDs. Prioritizing higher-order ergonomic controls, integrating workload management, and implementing community-based ergonomic interventions are essential to improving occupational health and reducing inequities among informal workers. Full article

Respiratory Syncytial Virus infection is a significant cause of morbidity and mortality in infants. Maternal vaccination with the bivalent vaccine Abrysvo^® in the third trimester (24–36 weeks) is an effective strategy to prevent severe respiratory illnesses in newborns. However, the introduction of this new technology faces structural obstacles that amplify inequalities. This rapid literature review sought to map and synthesize evidence on inequalities and inequities in adherence and accessibility to maternal vaccination among Black pregnant women. A rapid literature review was conducted using a mixed-methods approach (narrative synthesis and thematic analysis), following guidelines adapted from the Preferred Reporting Items for Systematic Reviews and Meta-Analyses and the Cochrane Handbook. The research question was structured using the acronym Population/Problem, Exposure, Comparison, and Outcome, focusing on Black pregnant women, maternal vaccination, comparison with other groups, and barriers/determinants. The search was conducted in databases such as PubMed (via Medical Literature Analysis and Retrieval System Online), Scopus and Literatura Latino-Americana e do Caribe em Ciências da Saúde, covering studies published between 2022 and 2025 that presented disaggregated analysis by race. The analysis and interpretation of the findings were guided by Critical Race Theory. The analysis of the twelve included studies (mainly from the United States, the United Kingdom, and Brazil) revealed systematic and robust disparities. Black pregnant women had lower vaccination coverage and were less likely to receive timely recommendations compared to White pregnant women. The barriers identified include: institutional distrust (resulting from structural racism), poor access to prenatal care, inadequate communication, and socioeconomic factors. Inequities are structural and multifactorial phenomena. To ensure that the benefits of the vaccine are distributed equitably, strategies such as anti-racist training for healthcare teams, active vaccination outreach, and continuous monitoring of data disaggregated by race are essential. Full article

Background: Individuals with intellectual and developmental disabilities (IDD) experience persistent health disparities that result in poorer health outcomes, reduced quality of life, and inequitable access to healthcare. Objective: This narrative review synthesized existing literature to identify key barriers to health equity and contributors to health disparities among individuals with IDD. Method: This study was a narrative (non-systematic) review that adopted a qualitative synthesis approach. A literature review was conducted across PubMed, CINAHL, PsycINFO, Medline, and Google Scholar to identify peer-reviewed articles published between 2010 and 2025 that address health disparities, health inequities, healthcare barriers, and social determinants of health among individuals with IDD. Thematic analysis was employed to synthesize the included studies and identify recurring patterns and themes. Results: A total of 88 articles were included. Two overarching domains shaping health disparities were identified: barriers to health equity and contributing factors. Seven barrier categories emerged: attitudinal, communication, policy, programmatic, social, physical, and transportation. Five key contributors were also identified: limited access to healthcare, comorbid conditions, low health literacy, adverse social determinants of health, and caregiver burden. Conclusions: Health disparities among individuals with IDD are driven by intersecting social, structural, and healthcare system barriers rather than individual limitations alone. This review informs policymakers, public health professionals, and interventionists on how to advance health equity for individuals with IDD through targeted, person-centered interventions. Full article

Workspace digitalisation presents a transformative shift from traditional, physically bounded offices to virtual, technology-enabled environments. Digital technologies like cloud computing, artificial intelligence, and the Internet of Things enable remote collaboration, data accessibility, and operational efficiency, thereby accelerating this transformation. Digital workspaces transcend geographical limitations, enabling a more flexible, inclusive, and adaptive work culture. They offer better work–life balance, with flexible options, reduced commuting time, and increased personal autonomy and control over commitments, compared to traditional workspaces. Despite these benefits, digitalisation creates cybersecurity, data privacy, and digital divide issues, where unequal access to digital tools and skills can exacerbate social and economic inequalities. The lack of physical interaction affects team cohesion and company culture. Hence, this paper explores these phenomena to uncover their implications and consider possible strategies to optimise workspace digitalisation, providing a comprehensive systematic review of extant literature within the study context, offering pragmatic insights and recommendations for workspaces. This study has found workspace digitalisation to be a complex, multifaceted phenomenon that provides flexibility, efficiency, and innovation, but also poses challenges that must be carefully managed. It postulates that as technology and work progress, a hybrid model that blends digital and traditional workspaces would be suited to each organisation’s needs and goals. Full article

Climate-related economic losses across Europe have evolved from isolated environmental shocks to persistent, structurally embedded fiscal risks, posing a direct challenge to the long-term fiscal sustainability of European states. This study presents an empirical framework for diagnosing and quantifying this transformation across 38 European countries between 1980 and 2023. Combining regime-switching time-series models with a two-part panel design, we identify temporal shifts and spatial asymmetries in loss exposure. Our findings reveal the emergence of a high-loss regime from the early 2000s, alongside a widening inequality in national vulnerability, with countries such as France, Germany, Italy, and Spain bearing a disproportionate burden. This concentration raises critical questions about the sustainability and equity of current EU risk-sharing frameworks. The two-part model further disaggregates the probability of experiencing losses from their conditional magnitude, enabling country-level estimates of expected annual losses. These results highlight the limitations of current fiscal instruments, which remain reactive and fail to align with the spatial and temporal dynamics of climate risk. We argue for a shift from climate loss management to climate loss governance, underpinned by predictive analytics, differentiated policy tools, and a reorientation of EU fiscal solidarity mechanisms. By quantifying, measuring, and spatially disaggregating climate-related fiscal exposure, this study contributes directly to the sustainability agenda: it demonstrates that climate losses are no longer exogenous disruptions but endogenous features of the European economic landscape that must be integrated into sustainable development planning, fiscal governance, and EU-level adaptation policy. Full article

Education occupies an important place among the 17 Sustainable Development Goals. It plays a role in the process of spreading awareness of the concept—its directions, meaning, and goals. According to the idea of the SDG, it is to be universally available to the world’s communities, with the aim of bridging social inequalities, as well as increasing the capacity for responsible functioning and development. The authors of this study believe that knowledge about sustainable development is crucial for shaping social attitudes that determine the uninterrupted development of the world’s economies towards sustainability. In their opinion, it is essential to pay particular attention to ensuring sustainable competences in the education process, which is aimed at preparing staff to perform professional roles in the socio-economic sphere and to be competent in the field of sustainable development. Hence, the aim of this study is to examine the level of awareness of students from selected higher education schools in Poland in this area. The study was conducted on the basis of a diagnostic survey, and the analysis of the results was carried out using qualitative methods, as well as quantitative methods in an in-depth study (logistic regression, supported by PQStat software version 1.8.4.164. The research results indicated that the surveyed students’ knowledge of sustainable development is good, as confirmed by 91% of responses. A key factor in strengthening this knowledge is the educational process implemented as part of their studies (64% of responses). Events supporting the teaching process, such as conferences or meetings with experts, are particularly important for shaping this knowledge. This indicates a high level of student motivation to explore this knowledge and apply it to a model of social behavior, which is rated as responsible by 94% of respondents. In-depth research confirms the above. The odds ratio of 12.994 with a confidence interval of −95% CI: 1.894–+95% CI: 3.238 for the factor of scientific events in the process of supporting green education demonstrates the significance of the findings. Strengthening green education with thematic scientific events is, therefore, an attractive and anticipated form of gaining knowledge on the SDGs by students, and undertaking these events is a recommendation resulting from the presented research. These results are important for modeling sustainable education in terms of the development potential of human resources. Full article

The aim of the present work is to study a class of nabla fractional problems with two different nabla Riemann–Liouville operators and three-point parameter-dependent boundary conditions. First, we derive the expression of the Green’s function; then, we deduce a few useful inequalities with it, and we establish an interval for the parameter in which the Green’s function is always positive. Using these properties, we manage to prove some non-existence, existence and multiplicity results using different fixed-point theorems. At the end, we give a few examples that verify and clarify the applications of our results. Full article

Background/Objectives: Oral diseases represent a major public health challenge in Africa, considering socioeconomic disparities and limited healthcare access. This systematic review aimed to comprehensively analyze the oral health status, conditions, and associated socioeconomic and cultural associated factors in North and West African regions. Methods: A systematic search was conducted in PubMed, Web of Science, and Scopus for cross-sectional studies. Using the CoCoPop framework, 19 studies were selected and evaluated for risk of bias using the JBI critical appraisal tool. Results: The findings reveal a substantial burden of untreated pathology, with localized caries prevalence reaching 74% in children. Periodontal health is consistently compromised in adults, characterized by high levels of calculus and gingival bleeding. Self-reported data highlight a symptom-driven culture, where lower-socioeconomic-status (SES) households rely on traditional remedies or emergency extractions due to economic and geographic barriers. Conclusions: Oral health in North and West Africa is characterized by profound inequalities. Current systems fail to reach vulnerable populations, emphasizing the urgent need for a structural shift toward integrated, equity-oriented primary care models that prioritize prevention over reactive, extraction-based treatments. Full article

In this work, we provide a convolution type operator ${\mathsf{\Lambda }}_{\nu ,b}$ that is produced by the generalized Marcum Q-function and examine how it maps to various Janowski-type subclasses of harmonic univalent functions. Since the Marcum Q-function has an integral form via the lower incomplete gamma function, the convolution operator ${\mathsf{\Lambda }}_{\nu ,b}$ can be understood as a fractional type integral operator operating on the coefficients of harmonic mappings. Applying ${\mathsf{\Lambda }}_{\nu ,b}$ to harmonic mappings $f=h+\overline{g}$ in the unit disk $\mathbb{D}$, we derive coefficient inequalities, and inclusion relations for various subclasses of harmonic and analytic univalent functions. In particular, we give sufficient conditions for ${\mathsf{\Lambda }}_{\nu ,b}\left(f\right)$ to belong to Janowski-starlike families such as ${\mathcal{S}}_H^{\ast }(F,G)$, ${\mathcal{K}}_H^0$, and ${\mathcal{R}}_H(F,G)$. Closure properties of the Janowski class under the proposed operator are also established. Numerical tables and examples confirm the inclusion results, and graphical plots illustrate how the operator reshapes the image domains for different parameter pairs $(\nu ,b)$. Numerical illustrations are provided to visualize the geometric steering effect induced by the Marcum Q-function and its fractional-order damping behavior. Full article