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Preprint Teks lengkap
Direct Numerical Simulation of MILD Combustion: Mixing and Autoignition from Non-Premixed Streams
Moderate or intense low-oxygen dilution (MILD) combustion is achieved by strongly diluting and preheating the reactants through mixing with hot combustion products before ignition. To better understand how fuel/air/product mixing and interaction govern MILD combustion dynamics, a novel direct…
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Preprint Teks lengkap
SoK: The Attack Surface of Agentic AI -- Tools, and Autonomy
Recent AI systems combine large language models with tools, external knowledge via retrieval-augmented generation (RAG), and even autonomous multi-agent decision loops. This agentic AI paradigm greatly expands capabilities - but also vastly enlarges the attack surface. In this systematization, we…
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Preprint Teks lengkap
Experimental Characterisation of Distributed Reactive Power Sharing under Communication-Induced Stress in Parallel Grid-Forming Inverters
Synchronisation of parallel grid-forming inverters is crucial for stable operation of future power systems. This includes accurate and robust reactive power sharing under realistic operating conditions such as impedance mismatch and communication constraints. In this work, reactive power sharing by…
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Preprint Teks lengkap
CMA-Unfold A Covariance Matrix Adaptation unfolding algorithm for stacked calorimeter detectors
Stacking calorimeters also refered as bremsstrahlung cannons widely used in inertial confinement fusion and ultra-intense laser plasma experiments have become essential diagnostics for characterizing short bursts of high-energy photons and charged particles. Extracting the underlying energy…
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On modules over a Hopf brace
Let $\mathbb{H}=(H_{1},H_{2})$ be a Hopf brace in a symmetric monoidal category ${\sf C}$. In this article it is proved that the category of modules over $\mathbb{H}$ is isomorphic to the category of modules over the smash product algebra $H_{1}\sharp H_{2}$. Furthermore, the category of modules…
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Preprint Teks lengkap
An Open-Access Multi-modal Dataset for Cognitive, Motor, and Cognitive-Motor Tasks
The incorporation of neuroimaging techniques such as electroenchephalography (EEG) and functional near-infrared spectroscopy (fNIRS) has provided new opportunities for the analysis of dynamic brain processes involved in cognitive and motor functions. Despite the great contribution of the…
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Preprint Teks lengkap
Ran Score: a LLM-based Evaluation Score for Radiology Report Generation
Chest X-ray report generation and automated evaluation are limited by poor recognition of low-prevalence abnormalities and inadequate handling of clinically important language, including negation and ambiguity. We develop a clinician-guided framework combining human expertise and large language…
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Preprint Teks lengkap
Nonlinear Stability of Taylor-Couette Flows with Heat Buoyancy
This paper investigates the nonlinear stability of Taylor-Couette (TC) flows incorporating the thermal buoyancy within an annular domain characterized by small viscosity $ν$ and thermal diffusivity $μ$. It is well established that the buoyancy induced convection significantly impacts practical…
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Preprint Teks lengkap
Orbital motion detected in gamma Cas Fe K emission lines
A subset of Be stars, typified by the naked-eye star gamma Cas, exhibits unusually bright and hard X-ray emission, the origin of which has remained debated for five decades. We performed high-resolution X-ray spectroscopic monitoring of gamma Cas with the Resolve instrument aboard the X-Ray Imaging…
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Preprint Teks lengkap
FixationFormer: Direct Utilization of Expert Gaze Trajectories for Chest X-Ray Classification
Expert eye movements provide a rich, passive source of domain knowledge in radiology, offering a powerful cue for integrating diagnostic reasoning into computer-aided analysis. However, direct integration into CNN-based systems, which historically have dominated the medical image analysis domain…
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Preprint Teks lengkap
Quasiperiodic Slipping Motion of Flare Ribbon Fine Structures Anchored in a Sunspot Light Bridge
We used high-resolution observations from the New Vacuum Solar Telescope and the Solar Dynamics Observatory to carry out a detailed multiwavelength analysis of the fine structures in the flare ribbon of a C3.9-class flare on 22 April 2021. A segment of the flare ribbon was rooted in a sunspot light…
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Preprint Teks lengkap
Extinction curves, extinction laws, and the failure of interstellar dust models
The interpretation of ultraviolet Galactic interstellar extinction curves is obscured today by accumulated assumptions, such as a purported link between the 2200 A bump and metallicity, that are not firmly supported by observations. In this paper I define extinction curves as the ratio F*/F0 of the…
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Preprint Teks lengkap
Optimizing Small Language Models for NL2SQL via Chain-of-Thought Fine-Tuning
Translating Natural Language to SQL (NL2SQL) remains a critical bottleneck for democratization of data in enterprises. Although Large Language Models (LLMs) like Gemini 2.5 and other LLMs have demonstrated impressive zero-shot capabilities, their high inference costs limit deployment at scale. This…
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Preprint Teks lengkap
PersonalQ: Select, Quantize, and Serve Personalized Diffusion Models for Efficient Inference
Personalized text-to-image generation lets users fine-tune diffusion models into repositories of concept-specific checkpoints, but serving these repositories efficiently is difficult for two reasons: natural-language requests are often ambiguous and can be misrouted to visually similar checkpoints…
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Preprint Teks lengkap
From Morality Installation in LLMs to LLMs in Morality-as-a-System
Work on morality in large language models (LLMs) has progressed via constitutional AI, reinforcement learning from human feedback (RLHF) and systematic benchmarking, yet it still lacks tools to connect internal moral representations to regulatory obligations, to design cultural plurality across the…
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Preprint Teks lengkap
How well does MAGPHYS recover galaxy properties? A test using EAGLE simulated star-forming galaxies
Spectral energy distribution (SED) models are widely used to infer the physical properties of galaxies from multi-wavelength photometry, but their accuracy is difficult to assess because the true properties of observed galaxies are generally unknown. We address this by fitting synthetic SEDs of…
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Preprint Teks lengkap
Caption Generation for Dongba Paintings via Prompt Learning and Semantic Fusion
Dongba paintings, the treasured pictorial legacy of the Naxi people in southwestern China, feature richly layered visual elements, vivid color palettes, and pronounced ethnic and regional cultural symbolism, yet their automatic textual description remains largely unexplored owing to severe domain…
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Preprint Teks lengkap
Relativistic Virial Operators
When studying Dirac operators, it is well known that the phenomenon of Zitterbewegung leads to a lack of convexity of the variance, which creates difficulties in the analysis of dispersive properties. In particular, standard virial methods are harder to implement in the Dirac setting. In this…
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Preprint Teks lengkap
Linear time single-source shortest path algorithms in Euclidean graph classes
In the celebrated paper of Henzinger, Klein, Rao and Subramanian (1997), it was shown that planar graphs admit a linear time single-source shortest path algorithm. Their algorithm unfortunately does not extend to Euclidean graph classes. We give criteria and prove that any Euclidean graph class…
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Preprint Teks lengkap
Gravitational Waves from Mergers of Asymmetric Dark Stars
A strongly self-interacting component of asymmetric dark matter (DM) particles can form compact dark stars (DSs). These objects have a broad spectrum of masses and radii, with distinct evolution histories from both neutron stars and black holes (BHs). We argue that these differences allow a…
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