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Workplace exclusion – often subtle and difficult to detect – significantly contributes to employee disengagement and turnover, costing US organizations over $1 trillion annually. This study examines how exclusionary behaviors (EBs) influence turnover intentions (TOIs) through disruption of psychological needs, using Rock’s SCARF model (Status, Certainty, Autonomy, Relatedness, Fairness) and self-determination theory. A two-wave survey of full-time US employees (N = 277) assessed EB, SCARF-based need satisfaction, and TOI. Partial least squares structural equation modeling revealed that EB significantly undermines all five SCARF domains, but only fairness and status mediated the EB–TOI link. Certainty, autonomy, and relatedness did not have significant effects. These findings suggest turnover risk intensifies when employees feel unfairly treated or socially devalued, rather than merely disempowered or disconnected. The study advances theoretical integration between SCARF and SDT and offers practical guidance for managers seeking to reduce attrition by fostering inclusive, respectful, and psychologically safe workplace environments.
This article explores the role of race in discussions of women and aging in the early twentieth century. It first examines the uses of whiteness in Charlotte Perkins Gilman’s problematic defense of older women, and then compares it with works by Harlem educator Elise McDougald. It investigates McDougald’s use of different life stages to disrupt anti-Black representations that stand in stark contrast to Gilman’s project. The article incorporates history and theories of aging, gender, and race, as well as literary analysis, to evaluate the long-standing and under-theorized importance of race in constructs of age and aging.
Everyday understanding takes empathy to be not just emotional mirroring with a specific etiology, but also a form of feeling for, or on behalf of, another. This article proposes an analysis of that for-relation. The analysis begins with the phenomenon of acting on behalf, which is then used as a template for an analysis of generic on behalfness, applicable to both action and emotion. The key to the relation turns out to be an agent’s espousal of a target’s goal, in light of which the agent acquires reasons for acting or feeling.
We present a method for reconstructing evolutionary trees from high-dimensional data, with a specific application to bird song spectrograms. We address the challenge of inferring phylogenetic relationships from phenotypic traits, like vocalizations, without predefined acoustic properties. Our approach combines two main components: Poincaré embeddings for dimensionality reduction and distance computation, and the neighbour-joining algorithm for tree reconstruction. Unlike previous work, we employ Siamese networks to learn embeddings from only leaf node samples of the latent tree. We demonstrate our method’s effectiveness on both synthetic data and spectrograms from six species of finches.
Women remain underrepresented in National Institutes of Health (NIH) study sections, panels of scientists who review grant applications to inform national research priorities and funding allocations. This longitudinal, retrospective study examined the representation of women on study sections before and during the COVID-19 pandemic. Overall, 16,902 reviewers served on 1,045 study sections across 2019, 2020, and 2021, of which 40.1% (n = 6,786) were women. The likelihood of reviewers being women significantly increased from 2019 to 2021, except among chairpersons. Understanding the representation of scientists influencing NIH grant decisions is important to ensuring scientific discovery that meets the nation’s pluralistic needs.
Decades of systemic oppression in Syria, from the 1963 state of emergency to the 2011–2024 conflict, have caused widespread psychological devastation. Arbitrary imprisonment, torture and sexual violence have been systematically weaponised. Following the fall of the Syrian regime in December 2024, freed political prisoners face severe mental health challenges due to years of inhumane conditions and trauma. This paper emphasises the urgent need for specialised mental health interventions and outlines evidence-based pathways to healing. A coordinated, multi-tiered response, integrating local and international efforts, is essential to prioritise mental health aid, restore dignity and support survivors in rebuilding their futures.
We explore the drawing of an axisymmetric viscoelastic tube subject to inertial and surface tension effects. We adopt the Giesekus constitutive model and derive asymptotic long-wave equations for weakly viscoelastic effects. Intuitively, one might imagine that the elastic stresses should act to prevent hole closure during the drawing process. Surprisingly, our results show that the hole closure at the take-up point is enhanced by elastic effects for most parameter values. However, the opposite is true if the tube has a sufficiently large hole size at the inlet nozzle of the device or if the axial stretching is sufficiently weak. We explain the physical mechanism underlying this phenomenon by examining how the second normal stress difference induced by elastic effects modifies the hole evolution process. We also determine how viscoelasticity affects the stability of the drawing process and show that elastic effects are always destabilising for negligible inertia. On the other hand, our results show that if the inertia is non-zero, elastic effects can be either stabilising or destabilising depending on the parameters.
Accurate absorption analysis of metasurface absorbers, considering all reflected modes, is critical. This corrigendum addresses a significant error in recent papers [19 and 20] as two selected samples, which misinterpret absorption mechanisms by neglecting the main contribution of cross-polarized reflections. According to the review of highly authoritative and highly referenced research, metasurface absorbers with losses can achieve wideband absorption, while low-loss structures typically exhibit resonant narrowband absorption or convert incident power to cross-polarized reflections – an aspect overlooked in [19 and 20]. We present key principles for accurate simulation in HFSS software, emphasizing correct handling of symmetrical and asymmetrical meta-cells and determining all reflected components. Re-analysis of the designs in [19 and 20] using these simulation principles reveals a significant overestimation of reported absorption; they are, in fact, polarization converters rather than perfect absorbers. Finally, we propose potential recommendations for these designs without using a loss mechanism.
If G is a graph, then $X\subseteq V(G)$ is a general position set if for every two vertices $v,u\in X$ and every shortest $(u,v)$-path P, no inner vertex of P lies in X. We propose three algorithms to compute a largest general position set in G: an integer linear programming algorithm, a genetic algorithm and a simulated annealing algorithm. These approaches are supported by examples from different areas of graph theory.
Using high-frequency disagreement data from the investor social network StockTwits, we find that greater unsophisticated disagreement facilitates informed buying and selling. During periods of overvaluation, the facilitating effect of disagreement on trading is dampened for informed buyers but is amplified for informed sellers. These findings are unexplained by sentiment, news, and retail order flow, and they remain when we measure disagreement overnight and disagreement of technical investors, which alleviates the concern that disagreement and informed trading respond to a common shock. These findings suggest that informed traders respond meaningfully but differently to valuation changes induced by unsophisticated disagreement.
Russian nation-building policy has often been described as ambiguous, blending a rhetorical commitment to the state’s multinational character together with more exclusionary rhetoric and policies. Drawing from original survey questions on national identity commissioned in December 2022, I find that Russian citizens continue to endorse a multinational vision of the Russian state during wartime. Respondents are simultaneously likely to exclude minorities from being fully considered as “true Rossians” [istinnye rossiiane], while socioeconomic and political factors are meaningfully associated with these patterns. In line with previous scholarship, these findings underscore the blurriness of the russkii/rossiiskii distinction in practice: just as russkii should not always be interpreted as an exclusively ethnic term, rossiiskii should not be seen as a non-ethnic category, either. The findings in the Russian case carry implications for understanding how nation-builders in multiethnic contexts may seek to cater to ethnic majorities while simultaneously signaling commitments to ethnic diversity.
We investigate the motion of weakly negatively buoyant spheres settling in surface gravity waves using laboratory experiments. The trajectories of the settling spheres are tracked over most of the water depth with simultaneous measurements of the background fluid flow. These experiments are conducted in the regime relevant for environmental and geophysical applications where both particle inertia and fluid inertia are important. Using these data, we show that the sphere motion is well described by the kinematic sum of the undisturbed fluid velocity and the particle terminal settling velocity as long as the fluid inertia is not too large. We show how this result can be understood in the context of an ad hoc Maxey–Riley–Gatignol-type equation where the drag on the particle is given by the Schiller–Naumann drag correlation. We also evaluate whether inertial particles experience enhanced settling in waves, finding that measurement uncertainties in the particle terminal settling velocity and the presence of Eulerian-mean flows do not allow the small percentage increase in the settling velocity to be measured. When the fluid inertia becomes large enough, we observe path instabilities caused by particle wake effects in both quiescent and wavy conditions. However, the particle velocity fluctuations associated with the path instabilities are unaffected by the background flow. The minimal influence of the wavy flow on the particle path instabilities is thought to be due to the large-scale separation between the waves and the particle.
under the homogeneous Neumann boundary condition for u, vi and the homogeneous Dirichlet boundary condition for $\bf{w}$ in a smooth bounded domain $\Omega \subset {\mathbb{R}^n}\left( {n \geqslant 1} \right),$ where ρ > 0, µ > 0, α > 1 and $i=1,\ldots,k$. We reveal that when the index α, the spatial variable n, and the number of equations k satisfy certain relationships, the global solution of the system exists and converges to the constant equilibrium state in the form of exponential convergence.
Trichinellosis is a parasitic zoonosis caused by a nematode parasite of the Trichinella (T.) genus. It poses significant public health issues due to limited effective and safe treatment options, especially for the muscle-encysted larval stage. Citrus paradisi (C. paradisi), with its high content of flavonoids and polyphenols, has been recorded to possess anti-parasitic properties and numerous therapeutic applications. The present work aimed to assess the efficacy of C. paradisi extract peel extract as a therapeutic agent, either alone or combined with albendazole (ABZ), against T. spiralis in experimentally infected mice. Sixty-six lab-bred Swiss albino mice were divided into control and treatment groups, then received either ABZ, C. paradisi extract, or a combination of both during the enteral, migratory, and encapsulation phases of infection. Parasitological, histopathological, and immunohistochemical examinations were performed to evaluate the efficacy of the treatments. All treated groups displayed a highly significant difference (p < 0.001) in larval counts compared to the positive control group, with the combination therapy group having the highest efficacy and the lowest mean count value during different treatment regimens. In addition, treated groups showed improved muscle integrity compared to the positive control group. Moreover, the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) showed the highest expression reduction in the combination therapy group. These findings highlight the potential of C. paradisi as a complementary therapy to albendazole for treating trichinellosis through muscle larva reduction and mitigation of inflammation.
Plastic pollution poses a critical and escalating threat to human health across the full life cycle of plastics. Scientific evidence links exposure to plastics and associated pollution to a range of adverse health outcomes. Vulnerable populations, particularly those in informal settlements and low-resource settings, bear disproportionate health burdens. The UN Global Plastics Treaty presents a vital opportunity to embed human health protection at its core. To be effective, the treaty must apply the precautionary principle, recognise and address health impacts across the full plastics life cycle, and phase out the most harmful plastic products and chemicals. The treaty must be adaptable to emerging scientific evidence, and inclusive of equity and human rights to protect present and future generations. Inclusion of a dedicated health article, alongside specific health considerations across a number of key provisions in the treaty text, and consideration of the right to health throughout all aspects of the treaty, will be essential for delivering on the treaty’s objective to protect human health and the environment from plastic pollution.
This study from the Luoxiao Mountains, southeastern China, combines historical information with paleoecological data from two wetlands, yielding a detailed reconstruction of landscape changes over recent centuries. The historical record suggests that people first settled in the region in the late Tang dynasty (618 to 907 CE), and wetland sediments show an increase in charcoal from about this time. During the Qing dynasty in the mid-seventeenth century, a temple complex and a Tea and Salt trade road were constructed near the study sites. Greater impacts are recorded in the wetland closer to the temple site. In the last few hundred years, pollen data show a regional decline of forest cover and the expansion of open vegetation as nearby lowland areas were settled and cleared for agriculture. Proxies for erosion show human impacts in the vicinity of the wetlands. Changes in charcoal inputs reflect regional fire activity, with elevated values around 1500 CE, low values during the Qing dynasty, and a subsequent peak during the twentieth century.
Updated estimates of 2024 ice thickness, the surface elevation losses in the last years and simulations of mass balance and evolution (using the Instructed Glacier Model) for the three largest Pyrenean glaciers strongly suggest that by 2034 the Pyrenees will be ice-free. If extreme summers like 2022 and 2023 recur, this could happen even earlier. We show that by 2030, 94% (from 0.22 to 0.01 km2) of the ice in Monte Perdido, 91% (from 0.22 to 0.05 km2) of the ice in Ossoue and 79% of the ice in Aneto (from 0.34 to 0.06 km2) will have melted under the RCP4.5 scenario; these numbers are 83%, 72% and 57% under a committed ice loss scenario, meaning that only 0.05, 0.12 and 0.12 km2 of ice will remain, respectively. In 2034, most likely they will have completely disappeared under the three considered scenarios (RCP 4.5, ‘committed ice loss’ and extreme 2022 year in a loop). The loss of these glaciers is a harbinger for what will happen in many other mountain regions.