Search Results (1,669)

Conventional multi-criteria decision-making approaches for battery energy storage system (BESS) dispatch evaluation treat regulatory and policy conditions as compensable criteria within a single aggregate score. This becomes problematic when institutional admissibility functions as a prerequisite for deployment rather than a tradeable attribute. This study aims to develop and test a sequential gate framework. The methodological contribution lies in the evaluation architecture itself: the framework distinguishes sequential admissibility gating from conventional compensatory Multi-Criteria Decision-Making (MCDM). Deployment feasibility is conceptualized as a layered construct in which regulatory admissibility defines the feasible solution space and technical performance differentiates among admissible options. The framework integrates systematic literature screening, quantitative policy and regulatory assessment, and technical ranking using a hybrid Best-Worst Method, Entropy weighting, and TOPSIS approach. A Danish case study covering twelve dispatch strategies compares the proposed sequential design with two flat alternatives. The results show that the evaluation architecture materially affects outcomes: sequential gating excludes an institutionally incomplete strategy and reorders the upper tier by removing compensatory policy effects. Coordinated multi-BESS control at Electric Vehicle charging parks achieves the highest combined feasibility (closeness coefficient 0.891, ranked 1st), while mobile BESS is excluded by the admissibility gate. The sequential design reorders the upper tier relative to flat MCDM, with S4 and S6 rising and S2 and S10 falling once policy compensation is neutralized after the gate. The top-ranked strategy remains robust across sensitivity analysis, Monte Carlo simulation, score perturbation, and VIKOR cross-validation. The framework is presented as an analytical pre-simulation screening tool rather than a validated implementation instrument; external validation against real deployment outcomes is identified as a priority for future research. The framework provides a structured, decision-consistent approach for evaluating deployment feasibility in regulated energy systems. Full article

Volume phase holographic gratings (VPHGs) are high-performance dispersive elements characterized by high diffraction efficiency and low noise. When used as dispersive components in imaging spectrometers for CO₂ detection, they can significantly enhance instrument performance, detection capability, and measurement accuracy. However, for short-wave infrared (SWIR) applications requiring high dispersion and operational efficiency, traditional design approaches struggle to effectively balance the trade-offs among multidimensional diffraction performance metrics, resulting in low optimization efficiency. Furthermore, as spectrometers require dispersive elements, established fabrication methods lack robust methodologies for producing large-area VPHGs. To address these gaps, we developed both a design approach and a fabrication process for VPH gratings tailored to CO₂ detection. On the design front, we propose a novel method that integrates a multi-objective simulated annealing optimization algorithm with Kogelnik’s coupled-wave theory. The optimized gratings achieve diffraction efficiencies of 95.35% (TE polarization) and 82.21% (TM polarization) across the target spectral range, with polarization sensitivity maintained below 6.57%. For fabrication, we developed holographic plate fabrication via a blade-coating technique coupled with an optimized aging protocol. A medium-to-large aperture holographic recording and exposure system with a wavefront error better than λ/25 RMS was developed. Post-processing conditions were systematically optimized based on experimental diffraction efficiency measurements, enabling the successful fabrication of VPHGs. It is explicitly noted that the experimental validation of the fabricated VPHGs is limited to the 1.620–1.630 μm wavelength range, while the full target design range of 1.620–1.650 μm has not been experimentally verified in this work. This work provides a valuable reference for the selection of dispersive elements for next-generation CO₂ detection satellites. The designed gratings fully meet application requirements, while the established fabrication process lays a solid foundation for the production of high-performance VPHGs. Full article

Laser therapy is commonly associated with transient skin reactions such as erythema and edema, creating a need for effective post-procedural skincare strategies. In this study, we developed and characterized a novel bio-mask that integrates a hydrogel matrix with a lipid nanodispersion system designed to simultaneously deliver hydrophilic and hydrophobic active compounds. The key innovation of this formulation lies in the combination of a highly hydrophilic hydrogel structure with lipid nanoparticles embedded within a polymeric network, enabling enhanced bioavailability of active ingredients. Preliminary observations from instrumental measurements in a small group of healthy volunteers suggest that a single 60 min application resulted in notable improvements in skin hydration and elasticity, along with a reduction in transepidermal water loss (TEWL), erythema, and skin sensitivity. Furthermore, both the complete formulation and its individual components exhibited inhibitory activity against collagen and elastin glycation, while promoting type I procollagen synthesis. Importantly, this study provides new evidence for the synergistic interaction between hydrogel matrices and lipid nanodispersion systems in modulating skin barrier function and biochemical aging markers. The formulation, composed entirely of ingredients of natural origin, proved to be an effective carrier for active compounds and showed measurable benefits for skin hydration and barrier-related parameters. Full article

Background/Objectives: The global health landscape is currently confronted with dual challenges from both infectious diseases and chronic conditions. Medical–preventive integration has emerged as a pivotal strategy to address these issues, aiming to create a comprehensive, closed-loop framework that spans disease prevention, treatment, rehabilitation, and healthcare, ultimately improving population health outcomes. In the Chinese context, existing policies remain fragmented, scattered across various healthcare-related regulations, and lack systematic and comprehensive analysis. This policy fragmentation may impede the creation of synergistic effects essential for the effective implementation of integrated healthcare strategies. Methods: This study adopted a mixed-methods approach to analyze 85 national policies: a three-stage coding process identified 1088 policy nodes, and a three-dimensional framework (policy instruments (X) × full-cycle health service (Y) × integration stages (Z)) was applied to uncover systemic imbalances. Social network analysis and Latent Dirichlet Allocation (LDA) topic modeling were utilized to map interagency collaboration patterns and thematic shifts, which were visualized using Gephi and Sankey. Results: The analysis revealed that policy instruments are predominantly supply-side (45.04%) and environmental-side (40.35%), with demand-side instruments (14.61%) being notably underutilized, particularly in health financing. Rehabilitation services, representing just 8.27% of the policy focus, were identified as a significant gap in the comprehensive health service cycle. While 44.58% of the instruments facilitated collaboration of medical and preventive services, integration of medical–preventive management stagnated at 25.28%, reflecting institutional inertia that impedes the redistribution of cross-sector resources. Agency collaboration evolved from a siloed approach (2015–2018) to a networked structure (2019–2021) and transitioned to centralized governance post-2022. Thematic shifts in policy discourse moved from a “Healthy China” focus toward pandemic-driven disease surveillance, culminating in the recent development of smart health ecosystems. Conclusions: China’s policies for medical–preventive integration demonstrate notable structural imbalances, particularly in the economic instruments related to health financing and the private-sector participation in healthcare. These imbalances may impede the effective allocation of healthcare resources and hinder the seamless transition toward integrated care. Future policy efforts should focus on optimizing the structure of policy instruments, addressing gaps in the full lifecycle of health services, advancing integration reforms, and promoting the transformation of the healthcare system through enhanced collaborative governance among key stakeholders. Full article

In response to the demands for planetary material detection, in this study, we propose an optical system for a compact remote Raman–LIBS (CRBS, Laser-Induced Breakdown Spectroscopy) combined spectrometer based on liquid lens focusing. This system adopts a design approach incorporating liquid lens focusing, a shared pulsed excitation source, and a common optical path for both transmission and reception. Compared to existing international combined Raman–LIBS spectrometer systems, the proposed optical system is more compact and achieves integrated Raman and LIBS detection capabilities, thereby facilitating system miniaturization and enhancing detection efficiency. This system represents a promising approach for compact, robust remote surface analysis instruments for terrestrial and planetary science. This study provides a theoretical foundation for achieving stable in-orbit detection in lunar material exploration and other long-distance signal detection missions. Full article

Cyberworthiness extends the concept of cybersecurity by evaluating whether systems and networks can perform their intended functions securely while maintaining protection against cyber threats. In corporate environments, cyberworthiness aims to ensure security, operational resilience, and trustworthiness across interconnected business processes and digital infrastructures. Modern organisations increasingly rely on complex cyber–physical and information systems, where vulnerabilities in software, networks, and devices can introduce significant operational and security risks. Cyberworthiness, therefore, encompasses security controls, risk management practices, and compliance with recognised cybersecurity standards and governance frameworks. It supports the assessment of information technology components and their exposure to both known and emerging cyber attacks, enabling organisations to evaluate system robustness and operational continuity. While cyberworthiness has historical foundations in system assurance and dependability, it also provides a conceptual basis for contemporary cyber resilience strategies. This paper discusses the concept of cyberworthiness in corporate organisations and identifies potential pathways for its practical implementation. It analyses existing cybersecurity standards and governance frameworks to support structured cyberworthiness assessment. This study presents a structured comparative review of fifteen cyberworthiness-relevant standards, supported by a Source Quality Appraisal Framework, a Framework Selection Guide specifying when each standard should be preferred and where conflicts arise, and a five-dimensional Cyberworthiness Assessment Readiness Model (CARM), a directional self-assessment instrument. The Efficient Automatic Safety and Security Assurance (EASSA) concept is proposed as a direction for future research, not a validated deployed system. Ensuring cyberworthiness remains challenging due to automation limitations in all reviewed standards, evolving threat landscapes, and governance complexity, requiring organisations to adopt integrated and measurable approaches to safeguard their digital assets and operational systems. Full article

NanoArduSiPM represents a paradigm shift in the ArduSiPM (Architected Detection Unit for Silicon Photomultipliers) roadmap, evolving from a standalone instrument into a high-density modular building block (36 mm × 42 mm × 3 mm, 7 g). This revision does not merely pursue miniaturization; it re-engineers the signal-processing chain to maintain high performance within a scaled-down footprint, enabling the transition from single-unit detection to scalable, distributed multi-detector systems. NanoArduSiPM is based on a three-layer architecture comprising an external scintillator and Silicon Photomultiplier (SiPM) detection module, a dedicated high-speed discrete analog front-end, and a System-on-Chip (SoC) for embedded acquisition and processing. The physical implementation adopts high-integrity PCB routing and rigorous isolation techniques designed to suppress digital–analog coupling, a critical requirement in such a compact form factor. This deterministic layout strategy provides the architectural foundation for time-tagging capabilities, currently under quantitative characterization, by addressing the fundamental sources of signal interference at the hardware level. Beyond hardware integration, NanoArduSiPM introduces the capability for extended firmware functionality, including event tagging via external inputs and the implementation of coincidence and veto logic. This framework supports the acquisition of multiple correlated histograms and allows multiple units to be interconnected on a shared SPI bus. By shifting from standalone operation to a coordinated, hierarchical architecture, NanoArduSiPM enables distributed detection schemes where event selection and correlation are handled natively within the system, reducing the dependency on external data acquisition electronics. The compact modular architecture, together with the high-performance discrete analog front-end and embedded data handling, makes NanoArduSiPM suitable for applications where low mass and low power consumption are critical, targeting applications such as space-based payloads, laboratory instrumentation, remote sensing, and large-scale distributed multi-channel detection systems. While no radiation-tolerance qualification of the complete system has been performed in this work, the microcontroller family used in the design is also available in radiation-tolerant variants, which may support future implementations targeting more demanding radiation environments. Full article

Most existing studies on winter tourism focus on destination development and resource evaluation, while systematic exploration of policy performance assessment remains insufficient. From the perspective of new institutional economics, this study innovatively introduces institutional change theory into the field of winter tourism policy evaluation. It deconstructs the three-dimensional evolution of policies—covering “design, implementation, and outcome”—and incorporates satisfaction feedback from four stakeholders: the government, tourism enterprises, local residents, and tourists. This establishes a systematic “three-dimensional, four-stakeholder” evaluation framework. To address the difficulty in obtaining policy performance data and improve the scientific rigor of empirical research, a combined subjective and objective weighting measurement system is adopted, integrating three core research instruments: the Delphi method is used to screen and confirm evaluation indicators and their connotations to ensure the rationality and pertinence of the evaluation system; the analytic hierarchy process (AHP) is applied to determine the weight of each evaluation indicator, realizing scientific and quantitative weighting of subjective and objective indicators; and questionnaire surveys are conducted to collect first-hand data on the satisfaction of the four stakeholder groups, providing empirical support for subsequent performance evaluation. This study surveyed 7 government staff, 15 tourism enterprise practitioners, 90 local residents, and 90 tourists, yielding 202 valid samples after screening. The results indicate that Lhasa’s “Winter Tour in Tibet” policy series achieved an overall effectiveness rating of B. Key deficiencies identified include insufficient public participation, low policy awareness, and weak ecological benefits. Consequently, it proposes localized optimization paths, such as “ecological winter tourism” and “targeted publicity”. This study establishes a theoretical framework for winter tourism policy evaluation, improves the methodological system for tourism policy research in special regions, provides a practical reference for the formulation and optimization of winter tourism policies in high-altitude ethnic areas, and expands the geographical coverage and theoretical boundaries of winter tourism policy research. Full article

Support professionals in organizational domains—encompassing information technology, administrative services, human resources, and records and archives management (RAM)—confront enduring obstacles, including peripheral status, interdisciplinary coordination imperatives, and standards proliferation. This conceptual synthesis investigates how congruence with Management System Standards (MSSs) can alleviate these predicaments by advancing system-level integration across support areas. Rooted in General Systems Theory, the inquiry scrutinizes ISO standards from pivotal technical committees and 2024 ISO Survey adoption metrics. It accentuates the voluminous standards burdening support functions and the attendant systemic complexity. The communal Plan–Do–Check–Act (PDCA) cycle and High-Level Structure (HLS) of MSSs are framed as unifying instruments that diminish fragmentation and augment coherence. Employing RAM as the principal exemplar, the examination discloses constrained alignment with overarching MSSs despite vigorous global embrace of standards like ISO 9001, ISO 14001, and ISO/IEC 27001. A succinct conceptual model is advanced to depict how PDCA and HLS can interlink support subsystems with organizational objectives. The study underscores strategic harmonization to amplify the prominence of underappreciated support roles, with ramifications for information technology (IT), human resources (HR), and administrative services. Recommendations are proffered for standards developers, practitioners, and professional associations, as well as educators, complemented by avenues for future empirical scholarship. Full article

In complex hydrogeological systems, such as multilayered aquifers in densely urbanized coastal areas, multi-parametric, multi-depth networks are required for discriminating between anthropogenic and natural signals. This study presents an evaluation protocol of a pre-existing piezometric network, composed of 66 piezometers, aimed at implementing a near real-time (NRTM) hydrogeochemical monitoring system in the Strait of Messina (Sicily, Italy) area. A rigorous selection process was conducted to determine the suitability of these sites for hosting permanent, above-ground instrumentation. After excluding 55 sites for logistical and administrative reasons, the remaining piezometers were evaluated through a multi-step protocol. Video inspections and vertical logs of temperature and electric conductivity were carried out to identify pipe integrity and screened sections. Water samples were collected, for the execution of geochemical and isotopic analyses, to distinguish between groundwater bodies and stagnant water or local infiltration. Finally, preliminary near real-time monitoring of water level and temperature assessed the response of the sites to hydrological cycles and tidal effects. A scoring system was applied to rank the sites, resulting in a priority list for the installation of the permanent monitoring network. The evaluation protocol was tested in the Strait of Messina, but it is based on a generical approach, independent of the specific setting of a study area, making it suitable for general applications worldwide. Full article

As a policy-driven land use transition initiative bridging poverty eradication and sustainable development, China’s Poverty Alleviation Relocation (PAR) program exemplifies how state-led resettlement can reconfigure land use patterns while balancing immediate livelihood security with long-term community capacity development. The integration of large-scale PAR communities into new urbanization is a critical postrelocation task that is essential for consolidating poverty eradication achievements and enhancing endogenous development capacity. This study examined how the configuration of policy instruments shapes the endogenous development capacity of PAR communities during their transition to new urbanization. Employing a “tool–goal” analytical framework, we conducted a content analysis of 38 provincial-level policy documents (2021–present) using NVivo 20 software. The findings reveal that while local governments have established a preliminary policy system, structural imbalances persist: (1) uneven deployment of policy tools, (2) underutilization of demand-based policy tools, (3) tool–goal misalignment, and (4) insufficient market/societal participation in government-led measures. The discussion further reveals that the land use transition in the PAR program emphasizes the “living mode” (housing and public services) over the “livelihood mode” (productive resources and nonagricultural employment), creating structural dependency and leaving industrial land underutilized—as evidenced by weak policy support for industrial development (14.83%) and labour outmigration from resettlement areas. Drawing on the sustainable livelihoods framework, we further demonstrate how this exogenous-dominated policy mix disproportionately enhances physical and financial capital while constraining the accumulation of human and social capital—the very foundations of endogenous development capacity. To address these issues, we propose three key recommendations: (1) optimizing the policy mix to strengthen the endogenous development capacity of PAR communities; (2) realigning policy tools with objectives to achieve diversified yet coordinated goals; and (3) addressing implementation gaps to better leverage market mechanisms and social forces in promoting the sustainable urban integration of resettlement areas. Full article

This paper presents the Goddard RISC-V (GRV) a compact, portable, and highly customizable fault-tolerant 32-bit RISC-V processor, specifically designed for embedded space applications. The design integrates advanced fault-tolerance mechanisms to mitigate arbitrary Single Event Transient (SET) and Single Event Upset (SEU) errors while ensuring data integrity. Importantly, fault tolerance is achieved entirely at the design level, eliminating the need for SEU-hardened semiconductor processes, custom cell libraries, or specialized back-end tools. The implementation prioritizes portability and resource efficiency, enabling compatibility with various FPGA and ASIC technologies. This initiative aims to provide NASA with a suite of portable, modular, and scalable alternatives to proprietary solutions. These solutions are designed for broad adaptability across multiple platforms, such as compact scientific instruments, miniaturized deep-space technologies, CubeSats, control and automation systems, and other applications constrained by low-resource processing environments. Full article

This work presents the design and validation of a low-cost electronic architecture for nuclear pulse conditioning and radiation exposure measurement using a Geiger–Müller tube. The main contribution is a structured three-stage conditioning system capable of transforming high-voltage analog nuclear pulses into standardized TTL-compatible digital signals for real-time acquisition and pulse counting. The proposed architecture integrates a regulated 500 V high-voltage supply, voltage coupling and limitation, CMOS-based inversion, and monostable pulse shaping using a 555 timer to generate stable 5 V output pulses with approximately 1600 μs duration. Experimental evaluation included oscilloscope-based pulse characterization, plateau-region verification, and calibration tests performed with a certified gamma radiation source under controlled laboratory conditions. The measured exposure response followed the expected inverse-distance radiation behavior, with relative deviations within $\pm 13\%$ compared with certified reference values. The results demonstrate the feasibility of implementing reliable radiation instrumentation using commercially available electronic components, providing an accessible solution for environmental, laboratory, and educational monitoring applications. Full article

Haemoglobin (Hb) concentration is a key biomarker for several diseases. Traditional laboratory methods often have limitations due to their time-consuming nature, the need for skilled personnel, or the use of high-cost instrumentation. This work presents a sensing strategy for developing new point-of-care tests (POCTs) for Hb detection via a proof of concept. The proposed sensing approach is implemented using plasmonic plastic optical fiber (POF) sensor chips that integrate an electropolymerized molecularly imprinted polymer (eMIP) film on the plasmonic surface for Hb-selective detection. The developed sensor system demonstrates an ultra-low detection limit of 80 fM in buffer, about five orders of magnitude lower than that of other comparable Hb sensors. Selectivity tests against common interfering proteins, such as bovine serum albumin (BSA) and immunoglobulin G (IgG), confirmed high specificity towards the target analyte. Moreover, the sensor’s performance was tested using a whole-blood sample, yielding results consistent with those of standard haematology analysis. The proposed sensor system, based on simple equipment, provides a quick (about 10 min) and cost-effective (about 10 euros per chip) label-free diagnostic tool for POCTs in real-world scenarios, such as finger-prick sampling, offering a less invasive alternative to traditional laboratory methods, towards devices useful for Internet of Medical Things (IoMT). Full article

Bridging the gap between theoretical heat exchanger analysis and physical intuition remains a persistent challenge in engineering education, particularly when students are confronted with real-system effects such as pressure losses, measurement uncertainty, and deviations from simplified models. This work addresses this challenge through the coupled development of a pedagogical framework and an experimental platform. A modular heat exchanger test bench was conceived, designed, and constructed by graduate students within a structured project-based learning environment, in which competitive and cooperative phases were combined to emulate real engineering practice. This approach positions the test bench not only as a laboratory tool, but as the outcome of an active learning process that integrates system design, instrumentation, and modeling. The resulting platform enables the comparative study of multiple heat exchanger technologies—including three water-to-water heat exchangers (plate, shell-and-tube, and double-pipe) and one air-to-water fin-and-tube heat exchanger—under parallel, counterflow, and crossflow arrangements across a wide range of operating conditions. Comprehensive instrumentation (temperature, flow rate, and pressure measurements) supports rigorous energy balance analysis, effectiveness evaluation, and hydraulic performance assessment. Beyond undergraduate experimentation, the test bench provides a framework for advanced learning objectives, including uncertainty propagation, $\epsilon$-NTU analysis, model development, and experimental validation. The confrontation between model predictions and experimental data, including observed discrepancies, is shown to play a central role in developing critical engineering judgment. The proposed approach demonstrates how the integration of project-based learning with a reconfigurable experimental platform can create a sustainable and scalable environment for heat transfer education. Full article