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Dementia care is often fragmented and difficult to navigate. Patient navigation is a promising solution to support individuals with dementia and their care partners.
Objective
A bilingual patient navigation program was piloted in New Brunswick, Canada, embedding six patient navigators in primary care clinics across the province.
Methods
A mixed-methods study explored participant characteristics, satisfaction, and experiences with the program.
Findings
Among 150 navigation cases, primary needs included access to informational resources and social services. Survey results showed high overall satisfaction with the program, along with improved knowledge and access to dementia-related health and social services. Qualitative findings further emphasized that patient navigators successfully linked participants to appropriate resources and services while also reducing care partner burden. However, systemic barriers such as long wait times and financial constraints persisted.
Discussion
This study highlights the need for early intervention and sustained navigation support to enhance dementia care coordination and accessibility in aging populations.
This article reconceptualizes the “rural problematique” in Canada through the contemporary “problem” of the rural migrant. Utilizing critical historical institutional theory, we argue that the challenges newcomers face in rural spaces not only reveal the stagnation of settlement policies but also demonstrate the long-lasting, integrative and harmful impacts of policy inertia. While newcomers experience the implications of inadequate and exclusionary social policies particularly acutely, the obstacles they face cannot be solved through changes to migration policy alone. Rather, we show how these barriers are the result of the historical, specific role that rural Canada plays within the political economy of the country, which relies upon the delineation between rural and urban, and the persistence of the rural as problematic. Thus, an analysis of the contemporary “problem” of the rural migrant demonstrates how the context can change, but the outcomes, which are consistent with the broader rural dynamic, remain the same.
We characterized antibiotic prescribing for outpatient telemedicine visits among a large cohort of pediatric, adult, and older adult populations during 2021. Opportunities exist for improving antibiotic prescribing in outpatient telemedicine, especially for respiratory conditions and among rural and older adult populations.
Lorsque des locuteurs produisent des néologismes à l’écrit, ils peuvent utiliser des marqueurs typographiques ou linguistiques pour mettre en saillance ces derniers. Cette étude, centrée sur des néologismes dénominaux suffixés en -ien, -ique et -esque, combine une analyse de corpus et une étude expérimentale de type questionnaire en ligne afin d’examiner, d’une part, le type et la proportion de ces marqueurs et, d’autre part, leur influence sur les jugements de néologicité. En production, les locuteurs marquent environ 23 % des néologismes, principalement avec des guillemets, puis avec des motifs syntaxiques et enfin avec des commentaires. En réception, la présence de ces marqueurs (guillemets et commentaires) augmente les taux de détection des néologismes. L’identification des néologismes est influencée par le cotexte. De plus, d’autres éléments semblent expliquer les variations des jugements de néologicité, tels que le suffixe du néologisme lorsque ce dernier est morphologiquement dérivé, et l’âge des locuteurs.
In recent years, the emergence of both the spatial and spectral turns has meant a more intense focus on the importance of space in supernatural narratives, especially within modern, industrialized cities. Less has been said, however, about the importance of understanding the affective resonances of space in early modern tales. This article examines tales of ghost sightings in London and Southwark that appeared in print. It argues that these hauntings created affective topographies that had both individual and communal resonances. In turn, the article explores how these emotional responses contributed to conceptions of space, community and neighbourhood in early modern London. As such, it demonstrates how paying attention to supernatural narratives can reveal a hidden geography of the city, one that is shaped by supernatural storytelling, emotions and close conceptions of community.
Cock-tailed Tyrant Alectrurus tricolor (Vieillot, 1816), a Vulnerable South American grassland specialist, is facing substantial habitat loss due to land-use change by agricultural and forestry expansion. This study aims to assess the current distribution and suitable habitat availability for Cock-tailed Tyrant using species distribution modelling (SDM) and recent distributional data from the Global Biodiversity Information Facility (GBIF). Occurrence data from 1,583 records, mapped by season and habitat type, were used to generate a MaxEnt model with a high predictive accuracy (AUC = 0.974). Results revealed three main distributional clusters: one in Brazil, another spanning Mato Grosso do Sul, Paraguay and north-eastern Argentina, and a separate group in the Bolivian lowlands. Seasonal analysis found no significant distributional shifts, supporting previous findings of the species’ non-migratory behaviour. Key environmental contributors to habitat suitability included ecoregion type, precipitation, and vapour pressure. The predicted suitable habitat covers approximately 177,753 km². These findings underscore the urgent need for conservation efforts focusing on critical grassland habitats, particularly within the Cerrado, Southern Cone Mesopotamian grasslands, and Beni savanna biomes. Sustainable land-use practices, grassland restoration, and periodic habitat reassessments are essential to preserve Cock-tailed Tyrant populations and support the biodiversity of South American grasslands.
Asymmetries and anisotropies are widespread in biological systems, including in the structure and dynamics of cilia and eukaryotic flagella. These microscopic, hair-like appendages exhibit asymmetric beating patterns that break time-reversal symmetry needed to facilitate fluid transport at the cellular level. The intrinsic anisotropies in ciliary structure can promote preferential beating directions, further influencing their dynamics. In this study, we employ numerical simulation and bifurcation analysis of a mathematical model of a filament driven by a follower force at its tip to explore how intrinsic curvature and direction-dependent bending stiffnesses impact filament dynamics. Our results show that while intrinsic curvature is indeed able to induce asymmetric beating patterns when filament motion is restricted to a plane, this beating is unstable to out-of-plane perturbations. Furthermore, we find that a three-dimensional whirling state seen for isotropic filament dynamics can be suppressed when sufficient asymmetry or anisotropy are introduced. Finally, for bending stiffness ratios as low as 2, we demonstrate that combining structural anisotropy with intrinsic curvature can stabilise asymmetric beating patterns, highlighting the crucial role of anisotropy in ciliary dynamics.
Luminescence dating and profiling are important analytical methods for providing chronological constraints and reconstructing depositional histories from sediment cores. However, sediment cores have often been exposed to ionising radiation sources during geophysical analyses, which potentially contaminates natural luminescence signals and may compromise the accuracy and reliability of luminescence analyses. Variable water content down-core is another potential issue for the rapid analysis of sediments, as water attenuates luminescence and may limit the comparability of samples. Here, we use a portable optically stimulated luminescence reader to test the influence of two common geophysical analyses—X-radiography and gamma-ray logging—on the luminescence properties of sediments in marine cores. We demonstrate that both techniques cause negligible changes to luminescence signals with doses <100 mGy. We test the effect of variable water content on luminescence and show that net signals are reduced by up to 70% at 30% moisture, relative to dry sediments. Accurate and reliable luminescence signals can be obtained from sediment cores despite prior exposure to ionising radiation from geophysical loggers or variable water content. However, the accuracy of luminescence measurements does require taking appropriate steps before analysis, like assessing the doses given by geophysical instruments at specific laboratories or drying samples.
In this note, we prove that minimizers of convex functionals with a convexity constraint and a general class of Lagrangians can be approximated by solutions to fourth-order Abreu-type equations. Our result generalizes that of Le (Twisted Harnack inequality and approximation of variational problems with a convexity constraint by singular Abreu equations. Adv. Math.434 (2023)) where the case of quadratically growing Lagrangians was treated.
The motionless conducting state of liquid-metal convection with an applied vertical magnetic field confined in a vessel with insulating sidewalls becomes linearly unstable to wall modes through a supercritical pitchfork bifurcation. Nevertheless, we show that the transition proceeds subcritically, with stable finite-amplitude solutions with different symmetries existing at parameter values beneath this linear stability threshold. Under increased thermal driving, the branch born from the linear instability becomes unstable and solutions are attracted to the most subcritical branch, which follows a quasiperiodic route to chaos. Thus, we show that the transition to turbulence is controlled by this subcritical branch and hence turbulent solutions have no connection to the initial linear instability. This is further quantified by observing that the subcritical equilibrium solution sets the spatial symmetry of the turbulent mean flow and thus organises large-scale structures in the turbulent regime.
The naming of cityscapes has never been a disinterested or straightforward affair. This article, which introduces the special issue on multifunctional urban toponymy in the Romanov Empire, opens by providing an overview of recent developments in critical place-name studies and bringing this field into dialogue with the historiography of the empire. It then delineates the main waves of toponymic changes in the empire from the eighteenth to the early twentieth century, and proposes a typology of the main categories of imperial toponyms used for (re)naming. Our main argument is that place names performed a wider array of functions, beyond just orientational and ideological, and were also used to gain socio-economic capital and enhance the social desirability and economic value of urban areas. Having introduced the contributions to the special issue, the article then outlines several avenues for future research.
The Salapunku archaeological site is located within the Historic Sanctuary – National Archaeological Park of Machu Picchu (HS-NAPM) in the Cusco area of Peru. Although Salapunku is related to the Inca settlements of the HS-NAPM, during archaeological excavations, we distinguished different moments of cultural occupation from the earliest human presence to complex pre-Hispanic societies such as the Inca and finally to the colonial period. Previous research on the site’s chronology was based on typological analyses of pottery and other artifacts found during archaeological research. This radiocarbon analysis, the first of its kind in this area, establishes a chronology of the cultural history of this significant settlement, considered the gateway to the Cordillera of Vilcabamba.
Internal waves in a two-layer fluid with rotation are considered within the framework of Helfrich’s $f$-plane extension of the Miyata–Maltseva–Choi–Camassa model. We develop simultaneous asymptotic expansions for the evolving mean fields and deviations from them to describe a large class of uni-directional waves via the Ostrovsky equation, which fully decouples from mean-field variations. The latter generate additive inertial oscillations in the shear and in the phase of both the interfacial displacement and shear. Unlike conventional derivations leading to the Ostrovsky equation, our formulation does not impose the zero-mean constraints on the initial conditions of any variable. Using the constructed solutions, we model the evolution of quasi-periodic initial conditions close to the cnoidal wave solutions of the Korteweg–de Vries (KdV) equation but with local defects, both with and without rotation. We show that rotation leads to the emergence of bursts of internal waves and shear currents, qualitatively similar to the wavepackets generated from solitons and modulated cnoidal waves in earlier studies, but emerging much faster. We also show that cnoidal waves with expansion defects discussed in this work are generalised travelling waves of the KdV equation: they satisfy all conservation laws of the KdV equation (appropriately understood), as well as the Weirstrass–Erdmann corner condition for broken extremals of the associated variational problem and a natural weak formulation. Being smoothed in numerical simulations, they behave, in the absence of rotation, as long-lived states with no visible evolution, while rotation leads to the emergence of strong bursts.
We develop a continuous-time model examining agency conflicts among controlling shareholders (managers), minority shareholders, and creditors in corporate investment decisions. The manager’s private benefits encourage overinvestment, while their equity stake and debt overhang lead to underinvestment. We show these offsetting incentive effects can achieve optimal investment timing under certain conditions. Agency costs exhibit U-shaped relationships with private benefits, tax rates, volatility, managerial ownership, and leverage. The model reveals how the interplay among agency conflicts, tax benefits, and bankruptcy costs shapes optimal ownership and capital structure, explaining several documented empirical patterns in corporate finance.