Tootfinder

"World Chimpanzee Day: the strength — and fragility — of chimp memory"
#Chimpanzee #Animals

World Chimpanzee Day: the strength — and fragility — of chimp memory
The more we try to understand chimpanzees, one of our closest relatives, the more we find ourselves humbled by the richness and complexity of their lives — and of their intelligence. Today, on World Chimpanzee Day, we look back at some of the latest studies that reveal facets of these great apes’ long, powerful memories. […]

Erosion studies from our morning hike yesterday, a ~500m long section of the valley exposing interesting structures and the fragility of life resting on the thin layer of top soil...
#Geology #Erosion #NaturePhotography

Little-known but Vital: Robert F. Kennedy Jr. is targeting a little-known program that underpins childhood immunizations in the U.S. by paying people who suffer rare side effects from shots.
A Serious Risk: Dramatic changes to the Vaccine Injury Compensation Program risk driving drugmakers from the market, threatening access to shots, experts say.
A Fragile System: The program underscores the fragility of America’s childhood immunization program at a time when Kennedy is renewing d…

RFK Jr. Wants to Revolutionize a Program That Supports Childhood Immunizations. The Results Could Be Catastrophic.
The Vaccine Injury Compensation Program stabilizes the nation’s childhood immunization system while paying those harmed by rare side effects. If the program topples, it could threaten access to vaccines.

Structure-Dynamics Correlation and Its Link to Fragility and Dynamic Heterogeneity
Mohit Sharma, Srikanth Sastry, Sarika Maitra Bhattacharyya
https://arxiv.org/abs/2506.12773

Structure-Dynamics Correlation and Its Link to Fragility and Dynamic Heterogeneity
Understanding the connection between structure, dynamics, and fragility (the rate at which relaxation times grow with decreasing temperature) is central to unraveling the glass transition. Fragility is often linked to dynamic heterogeneity, and thus it is commonly assumed that if structure influences dynamics, more fragile systems should exhibit stronger structure--dynamics correlations. In this study, we test the generality of this assumption using three model systems: Lennard-Jones (LJ) and W…

Fragility Spectrum: Measuring Resilience in Model-Theoretic Properties under Language Expansions
Nuraly Adilkhan
https://arxiv.org/abs/2508.10073 https://a…

Fragility Spectrum: Measuring Resilience in Model-Theoretic Properties under Language Expansions
We introduce the fragility spectrum, a quantitative framework to measure the resilience of model-theoretic properties (e.g., stability, NIP, NTP$_2$, decidability) under language expansions. The core is the fragility index $\operatorname{frag}(T, P \to Q)$, quantifying the minimal expansion needed to degrade from property $P$ to $Q$. We axiomatize fragility operators, prove stratification theorems, identify computational, geometric, and combinatorial collapse modes, and position it within Shela…

Boosting the Robustness-Accuracy Trade-off of SNNs by Robust Temporal Self-Ensemble
Jihang Wang, Dongcheng Zhao, Ruolin Chen, Qian Zhang, Yi Zeng
https://arxiv.org/abs/2508.11279

Boosting the Robustness-Accuracy Trade-off of SNNs by Robust Temporal Self-Ensemble
Spiking Neural Networks (SNNs) offer a promising direction for energy-efficient and brain-inspired computing, yet their vulnerability to adversarial perturbations remains poorly understood. In this work, we revisit the adversarial robustness of SNNs through the lens of temporal ensembling, treating the network as a collection of evolving sub-networks across discrete timesteps. This formulation uncovers two critical but underexplored challenges-the fragility of individual temporal sub-networks a…

I suggest a corrected headline:
"Starmer shows his fragility as he vindictively stamps his foot."
Original:
"Starmer stamps authority with MP suspensions, but risks appearing vindictive."
Labour sackings: exuding authority or petty and vindictive? - BBC News
https://www.bbc.co.uk/…

Labour sackings: exuding authority or petty and vindictive?
Senior officials say the sackings came after repeated organising against the government.

Exceptionally deficient topological square-root insulators
Subhajyoti Bid, Henning Schomerus
https://arxiv.org/abs/2508.11490 https://arxiv.org/pdf/2508.11…

Exceptionally deficient topological square-root insulators
One of the most surprising features of effectively non-Hermitian physical systems is their potential to exhibit a striking nonlinear response and fragility to small perturbations. This feature arises from spectral singularities known as exceptional points, whose realization in the spectrum typically requires fine-tuning of parameters. The design of such systems receives significant impetus from the recent conception of \emph{exceptional deficiency}, in which the entire energy spectrum is compos…

Design Automation in Quantum Error Correction
Archisman Ghosh, Avimita Chatterjee, Swaroop Ghosh
https://arxiv.org/abs/2507.12253 https://

Design Automation in Quantum Error Correction
Quantum error correction (QEC) underpins practical fault-tolerant quantum computing (FTQC) by addressing the fragility of quantum states and mitigating decoherence-induced errors. As quantum devices scale, integrating robust QEC protocols is imperative to suppress logical error rates below threshold and ensure reliable operation, though current frameworks suffer from substantial qubit overheads and hardware inefficiencies. Design automation in the QEC flow is thus critical, enabling automated s…

The Shape of Deceit: Behavioral Consistency and Fragility in Money Laundering Patterns
Danny Butvinik, Ofir Yakobi, Michal Einhorn Cohen, Elina Maliarsky
https://arxiv.org/abs/2507.10608

The Shape of Deceit: Behavioral Consistency and Fragility in Money Laundering Patterns
Conventional anti-money laundering (AML) systems predominantly focus on identifying anomalous entities or transactions, flagging them for manual investigation based on statistical deviation or suspicious behavior. This paradigm, however, misconstrues the true nature of money laundering, which is rarely anomalous but often deliberate, repeated, and concealed within consistent behavioral routines. In this paper, we challenge the entity-centric approach and propose a network-theoretic perspective …

Fragility in Average Treatment Effect on the Treated under Limited Covariate Support
Mengqi Li
https://arxiv.org/abs/2506.08950 https://

Fragility in Average Treatment Effect on the Treated under Limited Covariate Support
This paper studies the identification of the average treatment effect on the treated (ATT) under unconfoundedness when covariate overlap is partial. A formal diagnostic is proposed to characterize empirical support -- the subset of the covariate space where ATT is point-identified due to the presence of comparable untreated units. Where support is absent, standard estimators remain computable but cease to identify meaningful causal parameters. A general sensitivity framework is developed, index…

Rethinking Competition as a Non-Beneficial Mechanism in Economic Systems
Marcelo S. Tedesco, Gonzalo Marquez
https://arxiv.org/abs/2506.11405 https://

Rethinking Competition as a Non-Beneficial Mechanism in Economic Systems
Persistent economic competition is often justified as a mechanism of innovation, efficiency, and welfare maximization. Yet empirical evidence across disciplines reveals that competition systematically generates fragility, inequality, and ecological degradation, emergent outcomes not of isolated failures but of underlying systemic dynamics. This work reconceptualizes economic ecosystems as real complex adaptive systems, structurally isomorphic with biological and social ecosystems. Integrating c…

Scaling the glassy dynamics of active particles: Tunable fragility and reentrance
Puneet Pareek, Peter Sollich, Saroj Kumar Nandi, Ludovic Berthier
https://arxiv.org/abs/2506.09589

Scaling the glassy dynamics of active particles: Tunable fragility and reentrance
Understanding the influence of activity on dense amorphous assemblies is crucial for biological processes such as wound healing, embryogenesis, or cancer progression. Here, we study the effect of self-propulsion forces of amplitude $f_0$ and persistence time $τ_p$ in dense assemblies of soft repulsive particles, a model system that interpolates between particulate active matter and biological tissues. We identify the fluid and glass phases of the three-dimensional phase diagram obtained by var…

Algorithmic Complexity Attacks on All Learned Cardinality Estimators: A Data-centric Approach
Yingze Li, Xianglong Liu, Dong Wang, Zixuan Wang, Hongzhi Wang, Kaixing Zhang, Yiming Guan
https://arxiv.org/abs/2507.07438

Algorithmic Complexity Attacks on All Learned Cardinality Estimators: A Data-centric Approach
Learned cardinality estimators show promise in query cardinality prediction, yet they universally exhibit fragility to training data drifts, posing risks for real-world deployment. This work is the first to theoretical investigate how minimal data-level drifts can maximally degrade the accuracy of learned estimators. We propose data-centric algorithmic complexity attacks against learned estimators in a black-box setting, proving that finding the optimal attack strategy is NP-Hard. To address th…

"It's this brutal fragility of vector stacks — which are used by most modern computer languages — which makes software people so wary of fully exploiting the beauty and power of recursion, and I really think that's a shame"
#Lisp

Situated Epistemic Infrastructures: A Diagnostic Framework for Post-Coherence Knowledge
Matthew Kelly
https://arxiv.org/abs/2508.04995 https://arxiv.org/pd…

Situated Epistemic Infrastructures: A Diagnostic Framework for Post-Coherence Knowledge
Large Language Models (LLMs) such as ChatGPT have rendered visible the fragility of contemporary knowledge infrastructures by simulating coherence while bypassing traditional modes of citation, authority, and validation. This paper introduces the Situated Epistemic Infrastructures (SEI) framework as a diagnostic tool for analyzing how knowledge becomes authoritative across hybrid human-machine systems under post-coherence conditions. Rather than relying on stable scholarly domains or bounded co…

Replaced article(s) found for q-bio.QM. https://arxiv.org/list/q-bio.QM/new
[1/1]:
- Species Vulnerability and Ecosystem Fragility: A Dual Perspective in Food Webs
Emanuele Cal\`o, Giordano De Marzo, Vito D. P. Servedio

Fragility of Topology under Electronic Correlations in Iron Chalcogenides
Younsik Kim, Junseo Yoo, Sehoon Kim, Kiyohisa Tanaka, Li Yu, Minjae Kim, Changyoung Kim
https://arxiv.org/abs/2507.17656

Fragility of Topology under Electronic Correlations in Iron Chalcogenides
The interplay between electronic correlations and topology is a central topic in the study of quantum materials. In this work, we investigate the impact of the orbital-selective Mott phase (OSMP) on the topological properties of FeTe1-xSex (FTS), an iron chalcogenide superconductor known to host both non-trivial Z2 topology and strong electronic correlations. Using angle-resolved photoemission spectroscopy, we track the evolution of topological surface states across various doping levels and te…

This https://arxiv.org/abs/2503.19128 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qbi…

The Fragility of the Reverse Facilitation Effect in the Stroop Task: A Dynamic Neurocognitive Model
In typical Stroop experiments, participants perform better when the colors and words are congruent compared to when they are incongruent or neutral. Paradoxically, in some experimental conditions, neutral trials are faster than congruent trials. This phenomenon is known as Reverse Facilitation Effect (RFE). However, RFE has not been consistently replicated, leading to the so-called fragile results. There are some models that capture this effect, but they are not parsimonious. Here we employed o…

A Deep Learning-Driven Autonomous System for Retinal Vein Cannulation: Validation Using a Chicken Embryo Model
Yi Wang, Peiyao Zhang, Mojtaba Esfandiari, Peter Gehlbach, Iulian I. Iordachita
https://arxiv.org/abs/2507.21965

A Deep Learning-Driven Autonomous System for Retinal Vein Cannulation: Validation Using a Chicken Embryo Model
Retinal vein cannulation (RVC) is a minimally invasive microsurgical procedure for treating retinal vein occlusion (RVO), a leading cause of vision impairment. However, the small size and fragility of retinal veins, coupled with the need for high-precision, tremor-free needle manipulation, create significant technical challenges. These limitations highlight the need for robotic assistance to improve accuracy and stability. This study presents an automated robotic system with a top-down microsco…

Polarisation multiplexing ring-cavity fibre laser for dual-comb generation
Alberto Rodriguez Cuevas
https://arxiv.org/abs/2508.03476 https://arxiv.org/pdf/…

Polarisation multiplexing ring-cavity fibre laser for dual-comb generation
This thesis presents the development and characterisation of a polarisation-multiplexing ring-cavity fibre laser for dual-comb generation. It explores the underlying physics, implementation, and potential uses of this innovative laser system, especially in LIDAR technology. Conventional dual-frequency comb systems for metrology use two optical frequency combs synchronised via complex feedback loops, which suffer from phase-locking issues and raise system cost and fragility. In contrast, single-…

Stability of discrete-symmetry flocks: sandwich state, traveling domains and motility-induced pinning
Swarnajit Chatterjee, Mintu Karmakar, Matthieu Mangeat, Heiko Rieger, Raja Paul
https://arxiv.org/abs/2507.08187

Stability of discrete-symmetry flocks: sandwich state, traveling domains and motility-induced pinning
Polar flocks in discrete active systems are often assumed to be robust, yet recent studies reveal their fragility under both imposed and spontaneous fluctuations. Here, we revisit the four-state active Potts model (APM) and show that its globally ordered phase is metastable across a broad swath of parameter space. Small counter-propagating droplets disrupt the flocking phase by inducing a persistent sandwich state, where the droplet-induced opposite-polarity lane remains embedded within the ori…

Aerodynamic consequences of wing damage in dragonflies
Peng Yu, Ramiro Godoy-Diana, Benjamin Thiria, Dmitry Kolomenskiy, Thomas Engels
https://arxiv.org/abs/2507.00713

Aerodynamic consequences of wing damage in dragonflies
Flapping wings are the primary means by which dragonflies generate forces, but they are susceptible to damage due to their inherent fragility. The damage results in a reduction in wing area and a distortion of the original wing, which in turn leads to a decline in flight ability. Furthermore, the flows of dragonfly fore- and hindwings exhibit an interaction, thus damage to the forewing can also impact the aerodynamic performance of the ipsilateral hindwing. In this study, we examine this proble…

Noise Reinstates Collapsed Populations: Stochastic Reversal of Deterministic Extinction
Vinesh Vijayan, B Priyadharshini, R Sathish Kumar, G Janaki
https://arxiv.org/abs/2507.03954

Noise Reinstates Collapsed Populations: Stochastic Reversal of Deterministic Extinction
Conventional wisdom suggests that environmental noise drives populations toward extinction. In contrast, we report a paradoxical phenomenon in which stochasticity reverses a deterministic tipping point, thereby preventing collapse. Using a hybrid model that integrates logistic growth with a density-triggered sigmoidal collapse, we uncover a striking reversal: deterministic fragility on one side, and stochastic rescue under weak noise on the other. Our analysis demonstrates that noise disrupts t…