We study the influence of a low-frequency harmonic vibration on the formation of the two-dimensional rolling solitary waves in vertically co-flowing two-layer liquid films. The system consists of two adjacent layers of immiscible fluids with the first layer being sandwiched between a vertical solid plate and the second fluid layer. The solid plate oscillates harmonically in the horizontal direction inducing Faraday waves at the liquid–liquid and liquid–air interfaces. We use a reduced hydrodynamic model derived from the Navier–Stokes equations in the long-wave approximation. Linear stability of the base flow in a flat two-layer film is determined semi-analytically using Floquet theory. We consider sub-millimetre-thick films and focus on the competition between the long-wavelength gravity-driven and finite wavelength Faraday instabilities. In the linear regime, the range of unstable wave vectors associated with the gravity-driven instability broadens at low and shrinks at high vibration frequencies. In nonlinear regimes, we find multiple metastable states characterized by solitary-like travelling waves and short pulsating waves. In particular, we find the range of the vibration parameters at which the system is multistable. In this regime, depending on the initial conditions, the long-time dynamics is dominated either by the fully developed solitary-like waves or by the shorter pulsating Faraday waves.

The ways in which minority street-level bureaucrats construe their identities as state representatives and as representatives of minority clients are known to inform their discretionary behavior toward clients, thereby shaping policy outcomes. While existing studies have examined race and ethnicity as shared identities between minority bureaucrats and clients, the role of “migrant” identity has been overlooked. Focusing on the so-called European migration crisis of 2015–2017, this study addresses this gap. Drawing on qualitative interviews with migrant bureaucrats, it examines how being simultaneously a migrant and a migration policy implementer shapes bureaucratic discretion. This article introduces the notion of “migrant representative” and identifies four profiles of migrant bureaucrats, each corresponding to different degrees of identification with the local migration management system and the migrant clients. In doing so, it contributes to the literature on representative bureaucracy and the debate on the linkage between passive and active representation.

Clostridioides difficile infection (CDI) research relies upon accurate identification of cases when using electronic health record (EHR) data. We developed and validated a multi-component algorithm to identify hospital-associated CDI using EHR data and determined that the tandem of CDI-specific treatment and laboratory testing has 97% accuracy in identifying HA-CDI cases.

In this study an operational sea ice thickness (SIT) estimation algorithm, based on HH-polarized X-band synthetic aperture radar (SAR) data, background information from the most recent, typically from the previous day, available daily Baltic Sea ice chart and the operational Finnish Meteorological Institute (FMI) thermodynamic ice model, was developed and evaluated. The algorithm was designed to complement the C-band SAR SIT algorithm developed earlier at FMI and applied daily as part of the operational Copernicus Marine Service (CMS). The X-band SIT algorithm was developed by utilizing the sea ice thickness measurements made onboard the Finnish and Swedish ice breakers during two winters seasons: 2021–2022 and 2022–2023. The former season measurements were used for defining the algorithm parameters and the later season for evaluation of the algorithm performance. According to the evaluation metrics the X-band algorithm performance is slightly better than that of the operational CMS C-band SAR SIT algorithm, indicating its suitability for operational use in CMS.

The changing conditions in which sea ice forms and exists are likely to affect the properties of sea ice itself, and potential climate feedbacks need to be identified and understood to improve future projections. Here we perform a set of idealised laboratory experiments that model sea-ice growth under a range of freezing conditions. The results confirm existing theories; sea-ice growth rate is largest for cooler freezing temperatures, fresher ambient salinities and cases with bottom cooling. Our primary metric of interest is the brine fraction (the volume ratio of brine inclusions to the total sea ice), which we quantify and determine its sensitivity with respect to the ambient salinity, freezing temperature and, for the first time, the freezing direction. We find that the brine fraction of our model sea ice is most sensitive to freezing temperature, and increases 2.5% per 1$^\circ$C increase of freezing temperature.

Ben & Jerry's – the famous ice cream brand known for its quirky flavours and social justice ethos – announced in 2021 that it would withdraw its products from Israeli settlements in the Occupied Palestinian Territory (OPT). This announcement sparked controversy, with an impact on the company and its parent, Unilever. While the UN Guiding Principles on Business and Human Rights (2011) (UNGP) have established themselves as the leading international governance framework for the social responsibilities of businesses, their application to conflict-affected areas lacks clarity. Questions remain, including when is a company legally complicit in violations of international humanitarian law (IHL), and when is a corporate exit from an area under military occupation the appropriate and responsible thing to do. This article uses Ben & Jerry's withdrawal from the OPT as the basis for investigating these questions. It finds that while it is unlikely that Ben & Jerry's would be exposed to any legal liability for violating IHL through its product sales in Israeli settlements in the OPT, its withdrawal aligns with its responsibilities under the UNGP as a reasonable and prudent corporate action in response to its activities being linked to enduring and severe IHL violations.

Based on the critique of education for sustainable development (ESD) as a socio-political control element of ecological modernisation, we discuss the prefigurative potential of participatory photovoice research in schools in light of social-ecological transformation. We argue that engaging students in prefigurative practices of change in which (sustainable) counter-futures are explored in the (unsustainable) present can help to re-politicise ESD, and we view photovoice as a way to guide this transformative process. Drawing on examples from a participatory research project on the transformation of local food systems in Graz, Austria, we critically explored photovoice as a method of transformative education that creates power-critical spaces of possible futures in which (un)sustainable hegemony and collectively internalised patterns of thought and action can be questioned to envision and negotiate liveable futures for all.

A proposed crystal structure of lifitegrast Form A has been derived using synchrotron X-ray powder diffraction data and optimized using density functional theory techniques. Lifitegrast sesquihydrate Form A crystallizes in space group P21 (#4) with a = 18.2526(4), b = 5.15219(6), c = 30.1962(6) Å, β = 90.8670(19), V = 2839.35(7) Å3, and Z = 4 at 295 K. The crystal structure consists of discrete lifitegrast molecules linked by hydrogen bonds among carboxylic acid groups, carbonyl groups, and water molecules into a three-dimensional framework. The water molecules occur in clusters. Each water molecule acts as a donor in two O–H⋯O hydrogen bonds, and as an acceptor. One water molecule acts as an acceptor in a water–water O–H⋯O hydrogen bond, and all three water molecules are acceptors in C–H⋯O hydrogen bonds. Each carboxylic acid group acts as a donor in a strong discrete O–H⋯O hydrogen bond; one to a water molecule and the other to a carbonyl group. The amino groups both form N–H⋯O hydrogen bonds to carbonyl groups. The powder pattern has been submitted to ICDD® for inclusion in the Powder Diffraction File™ (PDF®).

Space as a domain of economic and security competition between great powers has risen to become an arena of active statecraft for middle powers in the twenty-first century. It has set a high-stake stage for not only continuing struggles for catch-up industrialization of late developers but also offering opportunities to capture commercial gains of technological breakthroughs and globalization of markets. We examine these challenges for Taiwan and Thailand, surveying major trends in the emerging space industry and exploring four analytical perspectives on how government-business relations shape adaptive national industrial policies in high-technology sectors with proliferating end-users. We argue that the Asian developmental state model is evolving in response to specific challenges of a global supply chain for commercial space activities dominated by leading space firms and government regulatory actions in the United States. Significant differences in Taiwan’s and Thailand’s space and industrial policy approaches will likely create divergent technological trajectories and reinforce current constraints on improving national security. The longer-term prospect for middle spacepowers remains contingent on the space race between the United States and the People’s Republic of China.

The aim of this study is to observe the ability of Southern Italian municipalities to respond to and redefine the management of common lands following the national privatisation and partition policies promoted by the State during the second half of the nineteenth century. The hypothesis tested is whether, through the analysis of new archival sources such as management rules, it is possible to identify good practices of management of common lands, along with the presence of resilience on the part of local communities during a period defined as one of uncontrollable ‘decline’ for these resources. Three Apennine areas (Campania Region) were identified as the observation sample. The analysis revealed that for these specific cases, it is imprecise to speak of decline and a lack of propensity to develop good management practices, but rather of institutions that are attentive to the protection and preservation of their commons through specific rules.

Environmental education (EE) can never be separated from politics and the relationship between the two is complex, has changed over time, and is understood and experienced differently. The field’s relationship with politics is both internal (its own politics) and external (political forces outside the field) to it. In this article, I narrate my story of engaging with EE, politics and the relationship between the two. I refer to my story as an autocartophilosography because it has been significantly influenced by my engagement with philosophy and by my movement in space and over time. My most recent engagement has been with scholars’ theorising in the posthuman condition, and I suggest that this present condition requires a different politics, an affirmative politics. I generate seven propositions towards an affirmative politics for EE: making kin, transversal subjectivity, new alliances, dis/identification, embracing slowness, ethical and intellectual stamina; experimental energy.