Durham University

The DESI Y1 RR Lyrae Catalog. I. Empirical Modeling of the Cyclic Variation of Spectroscopic Properties and a Chemodynamical Analysis of the Outer Halo

Abstract We present the catalog of RR Lyrae stars (RRLs) observed in the first year of operations of the Dark Energy Spectroscopic Instrument (DESI) survey. This catalog contains 6240 RRLs out to ∼120 kpc from the Galactic center and over 12,000 individual epochs with homogeneous...

The DESI Y1 RR Lyrae Catalog. II. The Metallicity Dependency of Pulsational Properties, the Shape of the RR Lyrae Instability Strip, and Metal Rich RR Lyrae

Abstract RR Lyrae stars (RRLs) are valuable probes of both Milky Way assembly and stellar-evolution physics. Using a sample 6240 RRLs obtained in the first year of the Dark Energy Spectroscopic Instrument (DESI) survey, we investigate the metallicity of RRLs and its correlation w...

Obscured Rhythms: Using Rhythmanalysis to Understand How Symptoms Associated With Menopause Shape Everyday Experiences of Physical Activity

Physical activity (PA) is frequently promoted as a means of managing symptoms associated with the menopause transition (MT), yet little is known of how the embodied, emotional and temporal disruptions of menopause influence the experiences of, and possibilities for, movement. Tak...

Committed Antarctic Ice Sheet mass loss by the end of the twenty-first century

Abstract The Antarctic Ice Sheet is the largest source of uncertainty in sea-level rise projections, with uncertainties propagating through emissions scenarios, atmosphere–ocean general circulation models, ice-sheet dynamics and sea-level physics. In ice-sheet model intercomparis...

Crystals in rhyolitic melts can nucleate multiple bubbles: an experimentally constrained model

Abstract Heterogeneous nucleation of bubbles on crystals in magma is thought to be an important driver of volcanic eruptions. Decompression experiments were carried out to elucidate the kinetics of H 2 O bubble nucleation on crystals of different sizes. Samples used were mixtures...

Collaborative evaluation and tensions around knowledge production in sport for development

This paper explores the mundane dynamics underpinning collaborative evaluation in the Sport for Development sector. Drawing on 12 months of ethnographic research using remote participant observation, we document the epistemic tensions arising among various actors during the colla...

Arctic curves of periodic dimer models and generalized discriminants

Abstract We compute the algebraic equation for arctic curves of the Aztec diamond with a doubly (quasi-)periodic weight structure and obtain similar results for certain models of the hexagon. In particular, we determine the algebraic degree of such curves as a function of the num...

Gendered time inequalities in Zhihu users’ portrayals of women doctoral supervisors working in Western academia

Little is known about how social media contribute to perpetuating gendered inequalities in doctoral supervision through time. This article draws on a time-focused theoretical framework to analyse around 460 comments from Zhihu made by users who may include current or prospective...

Age moderates the relationship between psychedelic use and mental health in naturalistic settings

Abstract Depression and anxiety affect one in five adults and vary across the lifespan; while prevalence generally declines with age until midlife, later life is marked by a re-emergence of symptoms. Although clinical trials suggest classic psychedelics (e.g., psilocybin, LSD) an...

Towards a unified framework for multiple stable states in ecological systems

Multiple stable states-the coexistence of two or more distinct ecological configurations under identical environmental conditions-have attracted sustained interest in ecology, yet the field still lacks a unified framework connecting ecological mechanisms to dynamical models. Here...

Fork-Politics in Post-Consensus Cryptoeconomics

In this forkshop, the Laboratory for Future Cryptoeconomics will identify and work on future histories of data-driven and consensus-oriented cultures by investigating the face value of blockchain narratives. Despite a history of critical debates undermining the concept, consensus...

Three Hardness Results for Graph Similarity Problems

Notions of graph similarity provide alternative perspective on the graph isomorphism problem and vice-versa. In this paper, we consider measures of similarity arising from mismatch norms as studied in Gervens and Grohe: the edit distance $δ_{\mathcal{E}}$, and the metrics arising...

Low voice pitch, when accompanied by video, increases perceived dominance but not attractiveness

Abstract Vocal masculinity, when increased digitally in audio recordings, tends to enhance men's perceived attractiveness and dominance. This observation has formed the basis of theories concerning the sexual selection of the male voice; however, recent studies have suggested tha...

Canonical affordances and the multitemporal depth of sociomateriality

Abstract How do the temporal horizons of human experience shape what our social, cultural, and material environments afford? This question has become crucial as affordance research increasingly explores the social, cultural, and historical dimensions of perception and action. Rec...

Accounting and local democracy in England: the contested purposes of local authority accounts

Purpose In this paper, we critically discuss a new framework for the purposes of local authority accounts and its relationship to the core concepts of accountability, transparency and local democracy. Design/methodology/approach This is accomplished via a critical review of the f...

Accelerated lowland thermokarst development revealed by UAS photogrammetric surveys in the Stordalen mire, Abisko, Sweden

Organic matter decomposition in permafrost soils depends on factors such as soil pH, temperature, and redox conditions. Over lowland permafrost soils, these conditions are shaped by microtopography, which evolves with physical degradation, i.e., lowland thermokarst development. A...

Singularities in soft matter systems

When a liquid thread pinches off, its neck thins as it separates into two unconnected regions. Using continuum mechanics, we can predict that the neck reaches zero radius in finite time while its curvature grows without bound. Together, the vanishing neck and diverging curvature...

Overview and outlook of heat-driven oscillating systems for sustainable heating, cooling and power generation

As a class of promising micro- or small-scale energy conversion technologies, heat-driven oscillating systems have drawn growing attention in heating, cooling, and power generation, thanks to their high reliability and high efficiency, especially for the conversion of lower-grade...

Predicting leadership self-concepts: The role of memory in processing self-relevant and relational events

Abstract Leaders develop through experience, particularly self-relevant and relational events that facilitate the development of domain-specific cognitive structures. Building on event system theory, we argue that coherent memory of an event can provide developmental benefits for...

Associations of structured and unstructured physical activity time in kindergarten with physical fitness in preschoolers: an isotemporal substitution and time threshold analysis

This cross-sectional study aimed to examine how reallocating time across different types of activities is associated with preschoolers’ physical fitness and to identify potential time thresholds that could inform kindergarten activity planning. A total of 337 Chinese preschoolers...