Structural Batteries for Aeronautic Applications—State of the Art, Research Gaps and Technology Development Needs

Radical innovations for all aircraft systems and subsystems are needed for realizing future carbon-neutral aircraft, with hybrid-electric aircraft due to be delivered after 2035, initially in the regional aircraft segment of the industry. Electrical energy storage is one key element here, demanding safe, energy-dense, lightweight technologies. Combining load-bearing with energy storage capabilities to create multifunctional structural batteries is a promising way to minimize the detrimental impact of battery weight on the aircraft. However, despite the various concepts developed in recent years, their viability has been demonstrated mostly at the material or coupon level, leaving many open questions concerning their applicability to structural elements of a relevant size for implementation into the airframe. This review aims at providing an overview of recent approaches for structural batteries, assessing their multifunctional performance, and identifying gaps in technology development toward their introduction for commercial aeronautic applications. The main areas where substantial progress needs to be achieved are materials, for better energy storage capabilities; structural integration and aircraft design, for optimizing the mechanical-electrical performance and lifetime; aeronautically compatible manufacturing techniques; and the testing and monitoring of multifunctional structures. Finally, structural batteries will introduce novel aspects to the certification framework.

Precise Thermoplastic Processing of Graphene Oxide Layered Solid by Polymer Intercalation

The processing capability is vital for the wide applications of materials to forge structures as-demand. Graphene-based macroscopic materials have shown excellent mechanical and functional properties. However, different from usual polymers and metals, graphene solids exhibit limited deformability and processibility for precise forming. Here, we present a precise thermoplastic forming of graphene materials by polymer intercalation from graphene oxide (GO) precursor. The intercalated polymer enables the thermoplasticity of GO solids by thermally activated motion of polymer chains. We detect a critical minimum containing of intercalated polymer that can expand the interlayer spacing exceeding 1.4 nm to activate thermoplasticity, which becomes the criteria for thermal plastic forming of GO solids. By thermoplastic forming, the flat GO-composite films are forged to Gaussian curved shapes and imprinted to have surface relief patterns with size precision down to 360 nm. The plastic-formed structures maintain the structural integration with outstanding electrical (3.07 × 105 S m−1) and thermal conductivity (745.65 W m−1 K−1) after removal of polymers. The thermoplastic strategy greatly extends the forming capability of GO materials and other layered materials and promises versatile structural designs for more broad applications. Graphical abstract

Sub-optimal modulation of gain by the cognitive control system in young adults with early psychosis

Executive dysfunctions in early psychosis (EP) are subtle but persistent, hindering recovery. We asked whether changes in the cognitive control system (CCS) disrupt the response to increased cognitive load in persons with EP. In all, 30 EP and 30 control participants undertook multimodal MRI. Computational models of structural and effective connectivity amongst regions in the CCS were informed by cortical responses to the multi-source interference task, a paradigm that selectively introduces stimulus conflict. EP participants showed greater activation of CCS regions, including the superior parietal cortex, and were disproportionately slower at resolving stimulus conflict in the task. Computational models of the effective connectivity underlying this behavioral response suggest that the normative (control) group resolved stimulus conflict through an efficient and direct modulation of gain between the visual cortex and the anterior insula (AI). In contrast, the EP group utilized an indirect path, with parallel and multi-region hops to resolve stimulus conflict at the AI. Individual differences in task performance were dependent on initial linear gain modulations in the EP group versus a single nonlinear modulation in the control group. Effective connectivity in the EP group was associated with reduced structural integration amongst those connections critical for task execution. CCS engagement during stimulus conflict is hampered in EP owing to inefficient use of higher-order network interactions, with high tonic gain impeding task-relevant (phasic) signal amplification.

Developing a process-oriented approach towards Positive Energy Blocks: the wind-analysis contribution

Positive Energy Block (PEB) is an emerging paradigm to transform cities into low carbon cities. It is expected that buildings will become the main components of the future energy infrastructure. This scenario demands a structural integration of the cyclical environmental variables in designing our buildings and cities as a whole. However, such an integration continue to be rare due to the dominance of object-oriented approaches. This study contributes to reducing these difficulties by developing a process-oriented approach, focusing on the wind contribution. The assumption posed herein is that the transition towards PEBs should be an opportunity to redefine the rules to organise the built environment structure integrating energy and urban environmental qualities. A case study, involving three public school buildings located in three different urban patterns in Rome, illustrates a preliminary step in developing an integrated platform to orient strategic design solutions towards PEBs. This is done by developing and assessing three indexes: wind form index, wind thermal-loss index, and wind energy production index. The results point out the usability and limits concerning the approach adopted, stressing the relevance of an integrated platform to support decision-makers in planning the agenda to transform buildings as components of PEBs.

Investigating a real-options approach to modelling public policy investments, and implications for public administration

<p>This thesis investigates the application of real-options modelling to policy investment coordination problems across government departments, with the aim of informing high-level institutional and system design choices in public administration. This analysis is motivated by recent and ongoing reforms to the legislative framework underpinning New Zealand's public service which, unlike the last major public administration reforms of the 1980s, are not expressly driven by or obviously supported by economic theory. We find that a simple real-options framework allows for a compelling illustration of the coordination problems that the current reforms are in part aiming to solve, and supports analysis of the types of mechanism that might be employed to address them. Such mechanisms include the promotion of structural integration, the broadening or alignment of departmental policy objectives, a relaxation of public finance restrictions, and joint decision-making over policy investments.</p>

Investigating a real-options approach to modelling public policy investments, and implications for public administration

<p>This thesis investigates the application of real-options modelling to policy investment coordination problems across government departments, with the aim of informing high-level institutional and system design choices in public administration. This analysis is motivated by recent and ongoing reforms to the legislative framework underpinning New Zealand's public service which, unlike the last major public administration reforms of the 1980s, are not expressly driven by or obviously supported by economic theory. We find that a simple real-options framework allows for a compelling illustration of the coordination problems that the current reforms are in part aiming to solve, and supports analysis of the types of mechanism that might be employed to address them. Such mechanisms include the promotion of structural integration, the broadening or alignment of departmental policy objectives, a relaxation of public finance restrictions, and joint decision-making over policy investments.</p>

Ethnic gaps in Swedish upper secondary school completion: Is ‘immigrant optimism’ the problem?

In many Western countries, researchers have documented ‘immigrant optimism’ in education, i.e., the tendency for immigrant-background students to choose academically more demanding routes than others at given levels of grade point averages (GPA). For some, this indicates structural integration, while others alert against an ‘immigrant optimism trap’ when ambition trumps ability, leading to high risks of non-completion. Using longitudinal Swedish population data (n≈90,000), we estimate the upper secondary ‘completion gap’ to 12% to the detriment of immigrant-background students. We then address the ‘trap hypothesis’ via two counterfactual analyses. The first shows that if immigrant-background youth made similar educational choices as other students at the same GPA, the completion gap would shrink by 3.4 percentage points. The second analysis suggests that restricting admission to programmes based on prior GPA, which would lead to a massive relocation of low- and mid-GPA students to vocational programmes, would reduce the completion gap by 2.2 percentage points. These changes must be considered marginal in view of the substantial restrictions of choice that either of these measures would entail. We conclude that completion gaps are not primarily a result of immigrant optimism, and optimistic choices are likely to be a net positive for structural integration.

Implementation of tele visit healthcare services triggered by the COVID-19 emergency: the Trentino Province experience

Aim In response to the SARS-CoV-2 emergency, the Competence Centre on digital health ‘TrentinoSalute4.0’ has developed TreC_Televisita, a tele visit solution that meets the needs of the Trentino healthcare system and maintains high-quality patient–doctor interactions while respecting social distancing. This paper highlights how ‘TreC_Televisita’ was integrated into the Trentino healthcare system and its potential to become a structural and durable solution for the future local healthcare service provisioning. Subject and methods This paper presents the multifactorial context that TreC_Televisita has faced for its implementation and the strategies adopted for its structural integration into the healthcare system. The analysis focuses on the main issues faced for the integration of the tele visits (e.g. privacy, payments) and how the context of TrentinoSalute4.0 permitted responding quickly to its implementation during the pandemic. It also describes how TreC_Televisita fits into the healthcare continuum from the organisational and technological standpoint, the end-user perspective and the barriers that could hamper the solution scalability. Results TreC_Televisita has demonstrated to be a technological solution that can be contextualised for different clinical domains beyond SARS-CoV-2. Moreover, it has shown its potential to scale up the solution beyond the COVID-19 emergency to the whole healthcare provisioning system in the long term. Conclusion Being a positive experience in the first months of its implementation, the long-term goal is to transform TreC_Televisita into a structural pillar of the Trentino healthcare system, setting the bases for a sustainable, win–win situation for all the stakeholders involved in healthcare service provisioning.