Search Results (309)

Star trackers are critical electro-optical devices used for satellite attitude determination, typically tested using Optical Ground Support Equipment (OGSE). Within the POR FESR 2014–2020 program (funded by Regione Toscana), we developed MINISTAR, a compact electro-optical prototype designed to generate synthetic star fields in apparent motion for realistic ground-based testing of star trackers. MINISTAR supports simultaneous testing of up to three units, assessing optical, electronic, and on-board software performance. Its reduced size and weight allow for direct integration on the satellite platform, enabling testing in assembled configurations. The system can simulate bright celestial bodies (Sun, Earth, Moon), user-defined objects, and disturbances such as cosmic rays and stray light. Radiometric and geometric calibrations were successfully validated in laboratory conditions. Under the PR FESR TOSCANA 2021–2027 initiative (also funded by Regione Toscana), the concept was further developed into STARLITE (STAR tracker LIght Test Equipment), a next-generation OGSE with a higher Technology Readiness Level (TRL). Based largely on commercial off-the-shelf (COTS) components, STARLITE targets commercial maturity and enhanced functionality, meeting the increasing demand for compact, high-fidelity OGSE systems for pre-launch verification of attitude sensors. This paper describes the working principles of a generic system, as well as its main characteristics and the early advancements enabling the transition from the initial MINISTAR prototype to the next-generation STARLITE system. Full article

The decarbonization of short sea shipping is emerging as a critical priority for Mediterranean countries. This paper presents key findings from the ELECTRA-GR project, funded by the EEA Financial Mechanism (MIS 5202231), which aimed to evaluate the feasibility, technical readiness, and legislative requirements for the electrification of coastal ferry services in Greece. The study focused on two pilot routes—Salamis–Perama and Chios–Oinousses— representative of the high-frequency, short-distance ferry operations characteristic of the Greek archipelago. A comprehensive assessment was conducted combining technical fleet profiling, stakeholder consultations, legislative analysis, cost–benefit evaluations, and international benchmarking with Norway. For the base scenario of the high-traffic Salamis–Perama route, full electrification yields an annual reduction of approximately 900 tons of CO₂ compared to diesel operation and achieves a Net Present Value (NPV) of €1.6 million over a 15-year period. In contrast, the Chios–Oinousses route, characterized by lower traffic volume, achieves a reduction of 85 tons of CO₂ annually through hybrid conversion, but results in an NPV of €−1.69 million, underscoring the need for financial support mechanisms or targeted subsidies to ensure economic feasibility. The results indicate that electrification of short ferry routes in Greece is technically feasible and environmentally advantageous but faces significant challenges, including inadequate port infrastructure, regulatory gaps, and limited industrial readiness. The study proposes a structured roadmap toward electrification, emphasizing the modernization of shipyards, tailored policy instruments, and public–private cooperation. The findings contribute to the formulation of a scalable strategy for clean maritime transport in peripheral and island regions of Greece. Full article

Driven by the “Dual Carbon” objectives, integrated energy systems face an imperative to achieve synergistic optimization encompassing economic viability, low-carbon performance, and operational flexibility. To facilitate the low-carbon transition of combined heat and power (CHP) units, this study proposes an integrated optimization framework coupling CHP with diversified auxiliary installations. A multi-dimensional comprehensive evaluation is conducted on distinct coupling configurations incorporating electric boilers, heat pumps, thermal energy storage, and carbon capture and storage. Initially, an electro-thermal optimization model integrating multi-component devices—including CHP with carbon capture and storage (CHP-CCS), electric boilers, heat pumps, and thermal energy storage—is developed. A comprehensive evaluation index system is established across four dimensions: economic efficiency, operational flexibility, low-carbon performance, and technology readiness level. Subsequently, the Tanimoto coefficient is introduced to supersede the Euclidean distance in the conventional Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) methodology, thereby refining the similarity measurement approach for optimal solution selection. Collectively, the configuration integrating CHP-CCS with electric boilers and heat pumps emerges as the optimal pathway. This configuration ensures reliable electricity and thermal load supply while substantially reducing system-level low-carbon transition costs and carbon emissions, concurrently enhancing renewable energy accommodation capacity. Full article

Weapon systems have transitioned from hardware-centered designs to software-driven platforms, introducing new cybersecurity risks, including software manipulation and cyberattacks. To address these challenges, this study proposes an improved manufacturing readiness level assessment (MRLA) method that integrates cybersecurity capabilities into the evaluation process to address the gaps in hardware-focused practices in South Korea. Based on the MITRE adversarial tactics, techniques, and common knowledge, and the defensive cybersecurity framework, this study identified security requirements, assessed vulnerabilities, and constructed exploratory testing scenarios using defense trees. These methods evaluate system resilience, the effectiveness of security controls, and response capabilities under diverse attack scenarios. The proposed MRLA approach incorporates cyberattacks and defense scenarios that may occur in operational environments. This approach was validated through a case study involving unmanned vehicle systems, where the modified MRLA successfully identified and mitigated critical cybersecurity threats. Consequently, the target operational mode summary/mission profile of a weapon system can be revised based on practical considerations, enhancing the cybersecurity assessments and thereby improving the operational readiness of weapon systems through scenario-based, realistic evaluation frameworks. The findings of this study demonstrate the practical utility of incorporating cybersecurity evaluations into MRLA, contributing to more resilient defense systems. Full article

This paper presents the SMALLDERS project, a European initiative aimed at transforming smallholders’ business models through an innovative technological platform. The platform functions as an e-marketplace that connects small farmers directly with consumers while simultaneously promoting environmental sustainability and collaboration across the agri-food value chain. The study evaluates the platform’s commercial viability and acceptance through a mixed-methods approach, incorporating qualitative and quantitative data. Research methods include focus group sessions, interviews with key stakeholders—such as transport companies, large distributors, and public administrations—and a consumer survey assessing intentions and attitudes toward the e-marketplace. Results indicate limited overall consumer readiness to adopt the platform; however, 48.6% of respondents expressed willingness to use it provided competitive prices and personal benefits are assured. Smallholders regard e-commerce as a promising opportunity, yet they face significant barriers, including limited resources, low digital literacy, and logistical constraints. Stakeholders generally view the platform positively, emphasizing that its success depends on achieving a critical mass of business volume. To foster adoption, SMALLDERS proposes three business models for smallholders: sustainable, cooperative, and technological. The platform includes a user-friendly feature to assist smallholders in transitioning among these models, complemented by training and support services designed to encourage more resilient and innovative agricultural practices. Full article

Background/Objectives: This study conducted a secondary and integrative analysis of qualitative data on adolescents and young adults (AYAs) with biliary atresia who survive with their native livers. These individuals struggle with independence and self-care due to prolonged parental involvement. Prior studies have insufficiently clarified how AYAs and parents jointly navigate daily responsibility transitions during this period. Therefore, we aimed to elucidate this process and develop a practical model to support nursing care. Methods: Semi-structured interview data from eight adolescent–parent dyads (one male and seven females, aged 17–25; one father and seven mothers, aged 40–60) were reanalyzed using the modified grounded theory approach. By reframing the analytical focus on dyadic interactions, four transition phases were identified, which were then integrated with the findings of two prior studies to construct an integrative process model. Results: The transition comprised four phases: (1) parent-led recuperation, (2) a vicious cycle of control and rebellion, (3) passing the axis of responsibility, and (4) aligning the parent–child rhythm to create a patient-centered life. The transition processes were shaped by changes in cognition and behavior. The model illustrates mutual adaptation through communication, negotiation, and reflection, identifying opportunities for nursing intervention. Conclusions: This process model offers a practical framework for nurses to assess readiness for care transitions, support transitional role shifts, and co-develop care strategies. The model provides insights into relationship-based communication and shared decision-making in transitional care by capturing the relational dynamics between AYAs and their parents. Full article

The urgent need for sustainable food systems in Indonesia is hindered by urban planning policies that are disconnected from food security priorities. Smart city planning policies in Indonesia have been subject to numerous misconceptions compared to successful implementations in developed countries. This study examines the relationship between urban planning policies and architectural design in fostering sustainable food systems, employing a mixed-methods approach that combines multiple linear regression analysis with a sample of 75 smart cities, correlation analysis, and case studies from six representative cities that demonstrate best practices. Key findings reveal that food security is significantly undermined by the Gross Regional Domestic Product (GRDP), indicating distributional inequalities, high food expenditure, and a lack of clean water, while access to electricity improves resilience. Case study analysis showed that Semarang is the city with the highest readiness level (97%), followed by Makassar (91%), which employs a Holistic Benchmark approach, Jakarta (91%), which follows a Technological—fragmented approach, Samarinda (86%) and Medan (79%), which are in a Developing Transition phase, and Surabaya (66%), which utilizes a Community and Local Initiatives approach. Each city adopted a different approach, which means the national strategy for developing Smart Cities will also differ; however, they must prioritize equitable infrastructure and architectural innovation, such as urban farming integration and a water–energy–food nexus system. Smart cities extend beyond technological innovations, encompassing integrated urban planning policies and architectural practices that foster sustainable food systems through infrastructure management and environmental sustainability. Full article

Green hydrogen is gaining global attention as a zero-carbon energy carrier with the potential to drive sustainable energy transitions, particularly in regions facing rising fossil fuel costs and resource depletion. In sub-Saharan Africa, financing mechanisms and structured off-take agreements are critical to attracting investment across the green hydrogen value chain, from advisory and pilot stages to full-scale deployment. While substantial funding is required to support a green economic transition, success will depend on the effective mobilization of capital through smart public policies and innovative financial instruments. This review evaluates financing mechanisms relevant to sub-Saharan Africa, including green bonds, public–private partnerships, foreign direct investment, venture capital, grants and loans, multilateral and bilateral funding, and government subsidies. Despite their potential, current capital flows remain insufficient and must be significantly scaled up to meet green energy transition targets. This study employs a mixed-methods approach, drawing on primary data from utility firms under the H₂Atlas-Africa project and secondary data from international organizations and the peer-reviewed literature. The analysis identifies that transitioning toward Net-Zero emissions economies through hydrogen development in sub-Saharan Africa presents both significant opportunities and measurable risks. Specifically, the results indicate an estimated investment risk factor of 35%, reflecting potential challenges such as financing, infrastructure, and policy readiness. Nevertheless, the findings underscore that green hydrogen is a viable alternative to fossil fuels in sub-Saharan Africa, particularly if supported by targeted financing strategies and robust policy frameworks. This study offers practical insights for policymakers, financial institutions, and development partners seeking to structure bankable projects and accelerate green hydrogen adoption across the region. Full article

The construction sector is under growing pressure to transition from linear, resource-intensive models to regenerative, circular practices. While Circular Economy (CE), Building Information Modelling (BIM), and Agile Project Management (APM) are each recognized for their potential to improve sustainability, their combined application in construction remains underexplored, particularly among small- and medium-sized enterprises (SMEs). In this study, we propose a conceptual framework integrating CE as a strategic objective, APM as the procedural methodology, and BIM as the digital enabler to foster circular practices in construction. Unlike previous studies, this research empirically integrates CE, BIM, and APM into a single coherent framework tailored specifically for SMEs. The framework is informed by secondary analysis of the BLOOM project dataset (n = 153) and a targeted readiness survey (n = 98) conducted among SMEs in the Mediterranean and Central European regions. The findings reveal a significant gap between awareness and implementation: while over 75% of respondents are familiar with CE and 63% use BIM tools, only 19% demonstrate readiness to integrate all three approaches. The main barriers—training gaps, regulatory ambiguity, and digital immaturity—are explored in detail. This study contributes by introducing a five-pillar framework and by identifying and analysing specific barriers that SMEs face when integrating CE–APM–BIM practices. Nevertheless, strong conceptual alignment exists, with over 80% agreeing on the potential of CE–Agile–BIM synergy. This study offers actionable insights into overcoming adoption barriers and emphasizes the need for policy-driven pilot projects, peer learning, and tailored capacity building to foster regenerative construction practices. Full article

As governments pursue digital transformation to improve service delivery and administrative efficiency, AI chatbots have emerged as a promising innovation in smart public administration. However, their adoption remains limited, particularly in transitioning countries where institutional, organizational, and technological conditions are complex and evolving. This study aims to empirically examine the key aspects, challenges, and strategic implications of AI chatbots’ adoption in public administration of Uzbekistan, a transitioning government in Central Asia. The study offers a novel contribution by employing an extended technology–organization–environment (TOE) framework. Data were collected through a survey among 501 public employees and partial least squares structural equation modeling was used to analyze data. The results reveal that perceived usefulness, compatibility, organizational readiness, effective accountability, and ethical AI regulation are key enablers, while system complexity, traditional leadership, resistance to change, and concerns over data management and security pose major barriers. The findings contribute to the literature on effective innovation in public administration and provide practical insights for policymakers and public managers aiming to effectively implement AI solutions in complex governance settings. Full article

Background: Protein substitutes are essential in the dietary management of phenylketonuria (PKU). Transition from first-stage phenylalanine (Phe)-free infant formula to second- and third-stage protein substitutes is carefully managed to meet a child’s evolving nutritional needs, feeding abilities, and developmental progression. However, clinical protocols, product access, and reimbursement vary globally. This study assessed international transition practices. Methods: A cross-sectional online survey explored health professionals’ practices on transition timing, influencing factors, product forms, casein-glycomacropeptide (cGMP) use, and perceived barriers and facilitators. Results: A total of 106 professionals from 32 countries participated: Europe (67%), Asia (12%), North America (10%), South America (8%), and Oceania (3%). Dietitians led transitions in 83% of centers. First-stage Phe-free infant formula was typically discontinued at 1–2 years (66%). Second-stage substitutes were introduced at 6–12 months in Europe (61%) and Oceania (100%), but after age one in Asia (69%), North America (72%), and South America (100%). Influencing factors included weaning alignment (46%) and nutritional needs (42%). Semi-solids were preferred in Europe (56%) and Oceania (67%), while powdered drinks dominated in Asia (62%), North America (82%), and South America (100%). Third-stage protein substitutes were introduced at 3–5 years (45%), with later transitions more common in South America (88%) and North America (63%). Ready-to-drink forms were frequent in Oceania (100%), Asia (92%), and Europe (85%). cGMP was prescribed by 61%, mainly guided by preference, Phe tolerance, and adherence; 26% reported no access. Key facilitators for transition included motivation (79%) and sensory properties (69%); barriers included aversion (70%) and poor taste/texture (69%). School involvement was reported by 32%. Conclusions: Protein substitute transition practices in PKU vary globally. International guidance and equitable product access are needed. Full article

Background/Objectives: Chronic pain symptoms can disrupt cognitive processes. Such interruptions may negatively impact one’s overall functioning, causing frustration and distress when engaging in important tasks. This experience has been referred to as cognitive intrusion of pain. To date, only one adult self-report measure of cognitive intrusion of pain exists: the Experience of Cognitive Intrusion of Pain (ECIP). The purpose of the current study was to examine the psychometric properties of the ECIP in a sample of pediatric patients with chronic pain. Methods: The internal consistency reliability, factor structure, and validity of the ECIP were evaluated in a sample (N = 182) of youth ages 11 to 18 who presented to a multidisciplinary chronic pain clinic at a large Midwestern children’s hospital in the United States. Results: Results suggest excellent reliability (α = 0.94). Confirmatory factor analysis results supported a one-factor model, with excellent model fit. The ECIP demonstrated evidence of convergent validity, with moderate and positive correlations with measures of pain-related limitations in functioning, pain symptoms, anxiety, and depression. Regarding discriminant validity evidence, the ECIP was minimally and inversely related to measures of readiness to transition to self-managed care and global health. Conclusions: Overall, the ECIP demonstrated strong initial reliability and validity evidence for use in pediatric chronic pain. Further research is recommended in more diverse samples and to evaluate the clinical utility of the ECIP. Full article

Backgrounds: To examine the association between stages of exercise behavior change, as defined by the transtheoretical model (TTM), and obesity progression among Chinese children and adolescents, with attention to gender and urban–rural differences. Methods: A total of 5006 Chinese children and adolescents aged 9–18 years were assessed in 2019 and followed up in 2020. Participants were categorized into five TTM stages: precontemplation, contemplation, preparation, action, and maintenance. Logistic regression models evaluated the associations between the TTM stages and obesity outcomes, including incident obesity and transitions from normal or overweight to obesity. Analyses were stratified by gender and urban–rural residence, and interaction effects were tested. Results: Compared to the maintenance stage, precontemplation (OR = 2.08, 95% CI: 1.45–2.99) and contemplation (OR = 1.48, 95% CI: 1.05–2.08) stages had higher obesity risk, with similar trends in follow-up incident obesity (precontemplation: OR = 1.63, 95% CI: 1.17–2.28; contemplation: OR = 1.47, 95% CI: 1.10–1.98). These associations were more pronounced among boys and rural residents. Significant interactions were observed between TTM stages, sex (p = 0.029), and residence (p = 0.005) in obesity transition. Conclusions: Exercise behavior stages are associated with obesity progression, particularly among boys and rural children. These findings underscore the importance of stage-specific interventions tailored to individual readiness for behavior change and contextual factors. Full article

Background/Objectives: Digital pathology has the potential to revolutionize pathology diagnostics, especially in geo-graphically isolated and underserved regions. By leveraging technology, telepathology, and integration with computer-aided diagnostic tools, digital pathology can improve access to prompt and accurate diagnostics. Methods: Our key steps to implementing digital pathology and transitioning operations to a digital network are assessing existing infrastructure, identifying gaps in connectivity and resources, and creating a workflow tailored to the needs of the healthcare system. Results: We present an approach of implementing digital pathology in Timmins, Northern Ontario, Canada, focusing on addressing regional disparities and the improvements that come alongside utilizing digital pathology. Our results show that digital pathology can provide prompt, efficient and better-quality diagnostic services to rural and un-deserved areas, improving patient care and outcomes. It also represents a cost-effective option with savings from eliminating travel costs, courier costs and additional operational efficiencies. Conclusions: Implementing digital pathology in rural settings presented with challenges related to infrastructure, technical abilities, workforce readiness, cost and other aspects involved in transitioning from traditional microscopy to a fully digital pathway. Digital pathology systems can help ensuring seamless data flow and improving overall healthcare delivery. Telepathology also allows pathologists to provide diagnostic services from a distance, which is particularly beneficial in areas with a shortage of pathologists. Full article

This study explores whether sustainability achievements—proxied through ESG (environmental, social, and governance) reporting—are associated with superior financial performance in Latvia’s manufacturing sector, where ESG maturity remains low and institutional readiness is still emerging. Building on stakeholder, legitimacy, signal, slack resources, and agency theories, this study applies a mixed-method approach (that consists of two analytical stages) suited to the limited availability and reliability of ESG-related data in the Latvian manufacturing sector. Financial indicators from three large firms—AS MADARA COSMETICS, AS Latvijas Finieris, and AS Valmiera Glass Grupa—are compared with industry averages over the 2019–2023 period using independent sample T-tests. ESG integration is evaluated through a six-stage conceptual schema ranging from symbolic compliance to performance-driven sustainability. The results show that AS MADARA COSMETICS, which demonstrates advanced ESG integration aligned with international standards, significantly outperforms its industry in all profitability metrics. In contrast, the other two companies remain at earlier ESG maturity stages and show weaker financial performance, with sustainability disclosures limited to general statements and outdated indicators. These findings support the synergy hypothesis in contexts where sustainability is internalized and operationalized, while also highlighting structural constraints—such as resource scarcity and fragmented data—that may limit ESG-financial alignment in post-transition economies. This study offers practical guidance for firms seeking competitive advantage through strategic ESG integration and recommends policy actions to enhance ESG transparency and performance in Latvia, including performance-based reporting mandates, ESG data infrastructure, and regulatory alignment with EU directives. These insights contribute to the growing empirical literature on ESG effectiveness under constrained institutional and economic conditions. Full article