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Let $X$ be a very general Gushel–Mukai (GM) variety of dimension $n\geq 4$, and let $Y$ be a smooth hyperplane section. There are natural pull-back and push-forward functors between the semi-orthogonal components (known as the Kuznetsov components) of the derived categories of $X$ and $Y$. In this paper, we prove that the Bridgeland stability of objects is preserved by both pull-back and push-forward functors. We then explore various applications of this result, such as constructing an eight-dimensional smooth family of Lagrangian subvarieties for each moduli space of stable objects in the Kuznetsov component of a general GM fourfold and proving the projectivity of the moduli spaces of semistable objects of any class in the Kuznetsov component of a general GM threefold, as conjectured by Perry, Pertusi, and Zhao.
Many factors influence the likelihood of bystander cardiopulmonary resuscitation (BCPR) after out-of-hospital cardiac arrest (OHCA), but gender disparities in prehospital care remain under-examined, particularly in relation to the bystander’s connection to the patient.
Objective:
The objective of this study was to evaluate the association between gender and the likelihood of receiving BCPR in OHCA. The primary outcome of the study was to examine differences in BCPR rates among men and women who experienced OHCA. The secondary outcome was to investigate whether bystanders were more likely to provide CPR based on their relationship to the victim, comparing “true” layperson CPR to CPR administered by family members or friends and how these rates differed between men and women.
Methods:
This retrospective prehospital chart review included all encounters from a single urban Emergency Medical Services (EMS) agency with a cardiac arrest prior to EMS arrival from January 1, 2017 through June 30, 2022 (n = 701). For each encounter, the presence or absence of BCPR was recorded, along with the relation of the bystander to the patient. “True” BCPR was defined as CPR performed by a layperson unknown to the patient. Patients were excluded if they exhibited signs of obvious death, were physically inaccessible to bystanders, had CPR initiated by trained facility staff or police, had a do not resuscitate (DNR) order present on EMS arrival, received CPR but were not in cardiac arrest, or were younger than 18 years old (n = 174). Odds ratios (OR) with 95% confidence intervals (CI) were used to evaluate data, with statistical significance defined at P < .05.
Results:
The study examined 701 cardiac arrest encounters: 250 female (35.7%) and 451 male (64.3%). Overall, men (n = 123; 27.3%) were more likely to receive BCPR than women (n = 48; 19.2%); OR = 1.58; 95%CI, 1.08-2.30; P = .02. Among those who received BCPR, women were significantly more likely to have received it from someone they knew (83.3% versus 65.9%; OR = 2.59; 95%CI, 1.11-6.04; P = .03) while men were more likely to receive “true” layperson BCPR.
Conclusions:
This study identifies significant gender disparities in prehospital BCPR and highlights an association between the bystander’s relationship to the patient and the likelihood of intervention.
The ‘vorticity transport’ theory by G. I. Taylor states that, in two-dimensional (2-D) turbulent flows, it is not the momentum of the eddies which is conserved from one step of their random walk to the other (the so-called Reynolds–Prandtl analogy), but their vorticity, implying that the conservation laws for the time-averaged profiles for the velocity $u$ and concentration of a passive scalar $c$ must be different. This theory predicts that, across a 2-D wake or a jet, both fields (scaled by their maximal value) are exactly related to each other by $u=c^2.$ We reexamine critically this problem on hand of several experiments with plane and round turbulent jets seeded with high and low diffusing scalars, and conclude that the microscopic equations for $u$ and $c$ are identical, but that the differences between the $u$- and $c$-fields is a genuine mixing problem, sensitive to the dimensionality of the flow and to the intrinsic diffusivity of the scalar $D$, through the Schmidt number ($Sc=\nu /D$) dependence of the flow coarsening scale. We observe that $u=c^{\beta }$ with $\beta =2$ in plane jets irrespective of $Sc$, $\beta =3/2$ in round jets at $Sc=1$ and $\beta =1$ in round jets for $Sc\to \infty$. We explain why, because measurements dating back to the 1930s–40s were all made for heat transport in air ($Sc\approx 1$), agreement with Taylor‘s vision was only coincidental. The experiments and the new representation proposed here are strictly at odds with Reynolds’ analogy, although essentially an adaptation of it to eddies transporting momentum and mass, but liable to exchange mass with a smooth reservoir along their Brownian path.
On March 5, 2024, the “Best Practices for the Washington Principles on Nazi-Confiscated Art” were introduced in Washington, DC.1 Prepared by the World Jewish Restitution Organization (WJRO) and diplomats from various countries, they are presented as legally non-binding but morally important standards to clarify and improve the 1998 Washington Conference Principles on Nazi-Confiscated Art.2 As such, they reinforce earlier calls on states to identify artifacts lost due to Nazi persecution and support “just and fair” solutions for title issues. Nevertheless, they go beyond these earlier instruments by proposing further action and widening key elements of the material norm.
The arrival of COVID-19 in the US during the spring of 2020 cast a spotlight on the issue of vaccinations and their efficacy. School closures and school vaccination policies were among the most contentious arenas of debate as parents, teachers, and policymakers wrestled with how best to respond to the pandemic. Disease in school is not a new topic—our nation has previously faced outbreaks of influenza, polio, measles, and more. A look at the past can teach us much about how to understand the passionate, and sometimes partisan, views about school vaccination. Outside of schools, the anti-vax movement has enjoyed greater visibility and support even as public health officials emphasize the importance of herd immunity and broad vaccinations. The confirmation of Robert F. Kennedy Jr. as Health and Human Services secretary in February of this year makes it likely that the issues of school vaccination and immunization policy will continue to be vigorously debated.
Philosophy is a discipline which, perhaps more than any other, is preoccupied with its history. At the same time, this preoccupation has as much to do with maintaining and reclaiming traditions as with critiquing and transforming them. Some figures leave indelible marks on schools of thought, even while attributing credit to their forebears on whose shoulders they in turn innovate and critique. The legacy of these figures is instantiated through the generative role they play in inspiring new schools of thought. Such reception is by no means inherently positive. In fact, it is often disagreement rather than affirmation that sustains the lasting impact of an original thinker.
Hydrodynamic density functional theory (DFT) is applied to analyse dynamic contact angles of droplets to assess its predictive capability regarding wetting phenomena at the microscopic scale and to evaluate its feasibility for multiscale modelling. Hydrodynamic DFT incorporates the influence of fluid–fluid and solid–fluid interfaces into a hydrodynamic theory by including a thermodynamic model based on classical DFT for the chemical potential of inhomogeneous fluids. It simplifies to the isothermal Navier–Stokes equations far away from interfaces, thus connecting microscopic molecular modelling and continuum fluid dynamics. In this work, we use a Helmholtz energy functional based on the perturbed-chain statistical associating fluid theory (PC-SAFT) and the viscosity is obtained from generalised entropy scaling, a one-parameter model which takes microscopic information of the fluid and solid phase into account. Deterministic (noise-free) density and velocity profiles reveal wetting phenomena including different advancing and receding contact angles, the transition from equilibrium to steady state and the rolling motion of droplets. Compared with a viscosity model based on bulk values, generalised entropy scaling provides more accurate results, which stresses the importance of including microscopic information in the local viscosity model. Hydrodynamic DFT is transferable as it captures the influence of different external forces, wetting strengths and (molecular) solid roughness. For all results, good quantitative agreement with non-equilibrium molecular dynamics simulations is found, which emphasises that hydrodynamic DFT is able to predict wetting phenomena at the microscopic scale.
We will give a precise and explicit asymptotic estimate for the characteristic of the Riemann zeta function $\zeta $ with an error term of order $O(\frac {\log r}{r})$ and a corresponding asymptotic estimate for the number of fixed points of $\zeta $.
The widening inequality and discontent concern every economy irrespective of any measure of economic prosperity. The contest and debate centred around the notion of private property, assumes the premise that property is a legitimised unfettered accumulation with a right-based justification. On the contrary, the Gandhian conception of property, tries to reframe the premise that property is social and needs to be justified over its obligatory commitments. I argue that Gandhi’s engagement with property relations reflects the individual pursuit by socialising property. From problematising the individual property rights within the Anthropocene world, the article mapping a Gandhian theory of property identifies the normative structure of property. The individual as the custodian with normative obligatory commitments can foster pluralistic interest while anchoring the ethical foundations of property rights reflecting social justice.
The study aims to investigate Ukrainian residents’ access to justice in cases where internally displaced people are compelled to file an appeal with the court against decisions made by State authorities that infringe on their rights to social security and pension support. The study makes use of classification and analogy techniques. Analysis and synthesis were the primary research methodologies. The formal legal method – specifically, the procedures of deduction and systematization – is one of the unique legal techniques employed. The definition of the term “internally displaced person” in the context of international law is the study’s output. It was done to become familiar with the key international agreements that define the legal status of internally displaced people. Using instances from other nations, the issue of internally displaced people within a nation was identified. This occurs during times of war or other situations that endanger the safety of individuals at their place of residence. It emphasizes integrating international best practices to safeguard these people’s rights inside national legal systems, particularly regarding social and pension provisions. It is determined that administrative procedures must be improved.
This article poses a synthetic analytical approach to casing migratory projects that set out to effectuate a redistribution of power and resources: migration as contentious politics. Contentious migration is presented as an attempt by a collective to mobilize adequate political leverage to advance claims in the location of immigration through spatial relocation and demographic change. To demonstrate the analytical leverage of this approach, this article then conducts a case study of the under-examined Hechalutz settlement movement active in North America between 1905 and 1953, which facilitated the settler migration of American youth to rural agricultural colonies on the colonial frontiers of late-Ottoman and British Mandatory Palestine. It draws on extensive, original findings in colony and national archives, examining official movement publications, correspondences, emissary notes, meeting minutes and daily records from the training farms across North America, diaries, and obituaries. Through eventful analysis, the article explicates three salient mechanisms of the mobilization for contentious migration: (1) environmental (attributing political opportunity and threat); (2) relational (forging networks, as a proxy for diffusion and organizational cohesion); and (3) cognitive (devising resonant diagnostic, prognostic, and motivational framings).
Inherited cardiac arrhythmias are life-threatening conditions associated with a high risk of sudden cardiac death. These diseases impose a substantial psychological burden. Parents experience heightened anxiety due to uncertainty, medical interventions, and risk of adverse events. However, limited research has examined anxiety levels in affected individuals and their families.
Objective:
This study aimed to assess anxiety levels in children and adolescents diagnosed with inherited cardiac arrhythmias, specifically Long QT Syndrome and Catecholaminergic Polymorphic Ventricular Tachycardia, and to identify factors influencing anxiety in both patients and parents.
Methods:
A prospective, survey-based cohort study was conducted between June 2023 and June 2024, including 53 patients (0–18 years) diagnosed with inherited arrhythmias. Anxiety was assessed using the State-Trait Anxiety Inventory. Demographic and clinical variables, including disease type, invasive procedures, family history of sudden cardiac death, and parental education, were analysed.
Results:
Mothers exhibited the highest anxiety (STAI-T: 46.6 ± 10.6) while fathers had the lowest (37.3 ± 7.0). Catecholaminergic polymorphic ventricular tachycardia patients reported significantly higher anxiety (49.2 ± 7.7) than long QT syndrome patients (38.0 ± 7.0, p < 0.01). Children undergoing invasive procedures, particularly sympathetic denervation, had elevated anxiety (45.1 ± 8.2 vs. 36.5 ± 6.4, p < 0.05). Mothers of male children and those with a family history of sudden cardiac death had significantly higher anxiety (p < 0.01).
Conclusion:
Inherited arrhythmias significantly impact psychological well-being, with mothers experiencing the highest anxiety levels. Disease severity, invasive procedures, and family history of sudden cardiac death contribute to increased anxiety, emphasising the need for psychological support in managing these conditions.