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Earlier sources: Science
Science investigates the natural world through observation, experiments, and mathematical models. Explore papers and developments in biology, medicine, materials, neuroscience, physics, climate, and mathematics; a reported finding is not necessarily established consensus.
SYMTRI organizes observations from public sources into a living map. Connections reflect shared subject matter; they do not establish causation or endorse a source.
Open in the map ↗1518 classified signals in the fourteen-day window. Recent momentum: steady. These counts include signals awaiting readable evidence.
Earlier sources
Up to ten sources with readable evidence, ordered by their feed timestamp. These archive sources can be older than the live fourteen-day window. This list is a sample, not a measure of total activity. Dates distinguish paper publication, repository creation, model/dataset activity, Hacker News posts, and KEV catalog additions. “First archived” records when SYMTRI first stored the signal.
- arXiv · Published · First archived
Varda-single-1.0: deterministic data-driven weather forecasting at 1 km resolution over Switzerland's complex topography ↗
We present Varda-single-1.0, a medium-range data-driven weather prediction system built for the Alpine domain. It provides hourly deterministic regional forecasts on a mesh of 1 km resolution and global forecasts on a 31 km mesh. The system comprises two independently trained stretched-grid Graph Transformer models with encoder-processor-decoder architecture, developed in the Anemoi framework: a 6-hourly autoregressive forecaster and a temporal downscaler reconstructing hourly forecasts between the forecaster's steps. Its training curriculum includes pre-training on ERA5 reanalysis data, follo…
- arXiv · Published · First archived
Learnt Attacks on Quantum Key Distribution under Channel Noise and Device Drift ↗
Quantum key distribution (QKD) links are provisioned from security analyses of stationary channels, whereas the devices that determine the channel drift between recalibrations. Whether an eavesdropper who cannot alter the channel's own noise gains by following that drift has not been quantified. Adaptive eavesdropping is posed here as a constrained Markov decision process in which the attacker selects one circuit per round while the noise level follows an Ornstein--Uhlenbeck process and the abort condition is a budget over each block of rounds. The value of adaptation is bounded by the best fi…
- arXiv · Published · First archived
QUFIG: GNN-Based Prediction of Quantum Fault Injection Vulnerabilities with Gate-Level Precision ↗
The growing scale and accessibility of quantum hardware exposed new reliability and security challenges in the quantum computing workflow, such as the run-time fault injection attacks in cloud-based quantum computing platforms. However, existing works fail to identify vulnerabilities with gate-level precision or adapt to run-time environments. In this work, we formulate gate-level fault analysis as a learning-guided prioritization problem under restricted fidelity budgets. The framework uses a circuit-DAG-based GNN backbone to predict the vulnerability score of each gate to each type of inject…
- arXiv · Published · First archived
From trends to optimized forecasts: Quantifying the skill and advancing the utility of dynamics-based early warnings for tipping events ↗
In this paper we explore and extend the state of the art for understanding the skill and utility of early warnings of critical transitions (tipping points) in forced nonlinear systems. We highlight some of the challenges and opportunities of transforming estimates of a dynamics-based early warning system, based on trends in stability or resilience into forecasts with high skill. We highlight the importance of (a) quantifying consequences of possible actions in response to warnings that may be false negatives or positives (b) considering finite time horizon predictions to give verifiable predic…
- arXiv · Published · First archived
Theory of Equivalent Tokamaks for Characterizing Turbulent Transport in Quasi-symmetric Stellarators ↗
It is well known that quasi-symmetric (QS) stellarators are isomorphic to tokamaks in terms of their neoclassical-transport properties, and the corresponding transport coefficients can be calculated in the same manner as in tokamaks. However, less is known regarding the turbulent-transport properties of QS stellarators, e.g. the transport coefficients from the ion-temperature-gradient (ITG) mode. In this work, a systematic theory of the ``equivalent tokamaks'' for QS stellarators is presented based on the local gyrokinetic formulation and the near-axis expansion theory. It is shown that to zer…
- arXiv · Published · First archived
Explaining El Niño Forecasts with the Average Gradient Outer Product ↗
An important and unresolved problem in the physical sciences is explaining the predictions made by neural networks. Several explainable artificial intelligence (XAI) methods have been proposed to address this problem, including gradient XAI, Integrated Gradients, and GradientSHAP. We evaluate the baseline XAI methods according to four scores: sensitivity (XAI patterns strongly affect predictions), attribution (XAI patterns reproduce the change in prediction relative to a baseline), robustness (XAI patterns remain stable for nearby inputs), and coherence (XAI patterns are spatially smooth). We…
- arXiv · Published · First archived
Recent increase in near-perpendicular tropical cyclone landfall fraction projected to emerge under high-emissions warming ↗
Tropical cyclone landfall angle strongly modulates storm-surge potential, but how it changes with climate remains unknown. From 1980 to 2024, the global fraction of near-perpendicular landfalls shows a weak, statistically insignificant increase, with no significant basin-scale trends. PepC-Global simulations driven by reanalyses reproduce observed landfall-angle and pre-landfall approach-angle distributions and broad geographic variations in the near-perpendicular fraction. When driven by output from 14 CMIP6 models, the simulations show a similarly weak and statistically insignificant increas…
- arXiv · Published · First archived
Transport Impacts of Resonant Island Chains in Fusion Plasmas ↗
Magnetic field-line transport in magnetically confined plasmas is commonly modeled as diffusion through stochastic magnetic layers generated by resonant perturbations. However, experimentally relevant magnetic configurations frequently exhibit transport rates that are substantially slower than predicted by fully stochastic models, indicating the presence of unresolved dynamical barriers. In this work, we investigate the role of nested resonant island chains and their associated invariant manifolds in regulating transport within the edge magnetic topology of DIII-D tokamak discharge #171491 sub…
- OpenAlex · Published · First archived
In Silico Comparative Genomic and Pan-Genomic Characterization of Bacteroides uniformis JCM5828 reveals Genome Plasticity, Biosynthetic Potential, and Functional Diversity ↗
Background Bacteroides uniformis is a common human gut commensal associated with carbohydrate metabolism and host–microbe interactions. However, its genomic diversity, genome plasticity, and biosynthetic potential remain incompletely characterized. This study aimed to comparatively characterize the genome and pan-genome of B. uniformis, to assess genomic islands, functional diversity, and putative biosynthetic features using publicly available genomic data. Methods An in-silico comparative genomic and pan-genomic analysis was performed using the genome of B. uniformis JCM5828 (RefSeq GCF_04436…
- OpenAlex · Published · First archived
From η′ physics to the Columbia plot in a U(3) holographic QCD model ↗
A bstract We construct a U(3) extension of a soft-wall holographic QCD model to investigate how a phenomenological determinant interaction affects the pseudoscalar nonet and the finite-temperature chiral phase structure. The holographic-coordinate-dependent determinant interaction dynamically generates the η - η ′ mass splitting and singlet-octet mixing. By analyzing pseudoscalar spectra, decay constants, mixing parameters, and quark-mass dependence, we find that vacuum pseudoscalar observables constrain the overall size of the determinant contribution but do not uniquely determine its hologra…
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Check each original source for its methods, release status, limitations, and supporting data. A repository announcement, a preprint, and a published study provide different kinds of evidence. SYMTRI’s subject classification helps discovery; it does not independently validate the source’s claims.
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