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Global Solution to an H-infinity Control Problem for Control-affine Systems

In this paper, we present a global solution to a nonlinear H-infinity optimal control problem for control-affine systems with an associated potential function. We also give a closed-form expression for an optimal controller and demonstrate its potential for sparsity. This paper thus advances a recent result which considers the same problem restricted to systems with symmetric state matrix and nonl

The mean diffusion propagator model revealed cortical microstructural changes associated with both amyloid-β and tau pathology and astroglial activation

Background: Markers of downstream events are a key component of clinical trials of disease-modifying therapies for Alzheimer’s disease (AD). Morphometric metrics like cortical thickness are established measures of atrophy but are not sensitive enough to detect Aβ-related changes that occur before overt atrophy become visible. We aimed to investigate to what extent diffusion MRI can provide sensiti

A Framework for Constructing Discrete Event Simulation Models for Emergency Medical Service Policy Analysis

Constructing simulation models can be a complex and time-consuming task, in particular if the models are constructed from scratch or if a general-purpose simulation modeling tool is used. In this paper, we propose a model construction framework, which aims to simplify the process of constructing discrete event simulation models for emergency medical service (EMS) policy analysis. The main building

Equivalence and polyvalence : A case for the stratification of semantics

The article presents a semantic theory suggesting that equivalence and polyvalence are closely connected phenomena. The connection between them is utilised by making equivalence the basis of an argument for polyvalence within semantics, or in other terms, for a stratified semantics encompassing two levels of description. This argument from equivalence lends new support to frameworks assuming a str

Looking at the Past to Understand the Present and Future of Urban Water–Energy Nexus

Concerns about water and energy security have enhanced the water–energy nexus studies. However, even being well explored, some crucial aspects lack further analyses, such as the historical background of the relationship between the resources. This kind of analysis provides an in-depth understanding of the current situation and future perspectives and must, therefore, be included in WEN investigati

Lawson Criterion for Ignition Exceeded in an Inertial Fusion Experiment

For more than half a century, researchers around the world have been engaged in attempts to achieve fusion ignition as a proof of principle of various fusion concepts. Following the Lawson criterion, an ignited plasma is one where the fusion heating power is high enough to overcome all the physical processes that cool the fusion plasma, creating a positive thermodynamic feedback loop with rapidly

The Astropy Project : Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package*

The Astropy Project supports and fosters the development of open-source and openly developed Python packages that provide commonly needed functionality to the astronomical community. A key element of the Astropy Project is the core package astropy, which serves as the foundation for more specialized projects and packages. In this article, we summarize key features in the core package as of the rec

Social Policy in a Climate Emergency Context: Towards an Ecosocial Research Agenda

Social policy developed as a research field and academic discipline to ensure protection from social risks in the era of emerging capitalism and industrialization. While welfare states have successfully increased their citizens’ wellbeing, they have also contributed to the ecological crisis, while the shared scientific understanding of exceeded planetary boundaries and worsening climate change sce

Parsing human rights, promoting health equity: Reflections on Colombia's response to Venezuelan migration

Over the last 7 years, a multidimensional crisis in Venezuela has resulted in massive emigration. Over 7 million have fled the country, with more than 2.4 million seeking to settle in Colombia. Of these, as of 2021, more than 1 million were undocumented, but the situation has started to change with the implementation of an ambitious migrant regularisation scheme. Regularisation promises access to

Lessons learned from child health care nurses' experiences of teaching infant massage groups: A qualitative interview‐based study

AimTo describe child health care nurses' experiences of teaching infant massage in parent groups.DesignThis was an exploratory-descriptive qualitative study based on individual interviews.MethodQualitative semi-structured interviews were conducted with child health care nurses (N = 9) according to the COREQ guidelines and analyzed with qualitative content analysis.ResultsFive categories were ident

Från redaktionen: Levbarhet, motstånd och hopp

Artiklarna i detta nummer bearbetar frågor om levbarhet, motstånd och hopp på olika sätt, utifrån olika disciplinära kontexter och med en bredd av material. Frågan som ställs handlar om vilka som anses ha liv värda att skydda, och vad som gör livet levbart för de som positioneras utanför det begripliga och därmed skyddsvärda och sörjbara. Vi förhåller oss här till Butlers analys och förslag att täThe articles in this issue address issues of livability, resistance and hope in different ways, from different disciplinary contexts and with a wide range of materials. The question posed is who is considered to have lives worth protecting, and what makes life liveable for those who are positioned outside the intelligible and thus worthy of protection and care. Here we relate to Butler's analysis

The Winding Road to Equal Care : Attitudes and Experiences of Prescribing ADHD Medication among Pediatric Psychiatrists: A Qualitative Study

Evidence is lacking on how to understand the reasons for variations, both in prevalence of ADHD and ADHD medication prescribing patterns in children and adolescents, within Region Skåne. These variations are not in line with current national clinical guidelines and seem to have increased over time. This qualitative interview study illuminates pediatric psychiatrists' attitudes toward ADHD and thei

Maximizing QRS duration reduction in contemporary cardiac resynchronization therapy is feasible and shorter QRS duration is associated with better clinical outcome

AbstractBackground We aimed to evaluate if optimization by maximizing QRS duration (QRSd) reduction is feasible in an all-comercardiac resynchronization therapy (CRT) population, and if reduced, QRSd is associated with a better clinical outcome.Methods Patients with LBBB receiving CRT implants during the period 2015–2020 were retrospectively evaluated. Implantsfrom 2015–2017 were designated as conBackgroundWe aimed to evaluate if optimization by maximizing QRS duration (QRSd) reduction is feasible in an all-comer cardiac resynchronization therapy (CRT) population, and if reduced, QRSd is associated with a better clinical outcome.MethodsPatients with LBBB receiving CRT implants during the period 2015–2020 were retrospectively evaluated. Implants from 2015–2017 were designated as controls. S

Merging dual-polarization X-band radar network intelligence for improved microscale observation of summer rainfall in south Sweden

Compact dual-polarization doppler X-band weather radars (X-WRs) have recently gained attention in Scandinavia for sub-km and minute scale rainfall observations. This study develops a method for merging data from two X-WRs in Dalby and Helsingborg, southern Sweden (operated at five and one elevation angle levels, respectively) to improve the accuracy of rainfall observations. In total, 87 rainfall

Social Robots for Social Institutions : Scaling Up and Cutting Back on Cognition

Current technological change is rapid and far-reaching, more so than ever before in human history. It is transforming all dimensions of human life, leading to large-scale adaptation. Among the disruptive new technologies that are being introduced into society, social robots are distinguished by their hybrid existence between mere thing and mindful agent. They are physical machines capable of inter

COVID-19-related loneliness, social isolation and burden in informal caregivers worldwide

Background: Informal caregivers may experience high levels burden. Prior to COVID-19, loneliness and social isolation, and especially the discordance between them, were recognized for rapid aging-related cognitive decline. The COVID-19 has significantly increased social isolation and loneliness in caregivers. Thus, we aimed to explore the variables that were associated with higher care burden amon