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Showing 13217 results for "stefan mengel"
Physics Preprint PDF DOI

Mixture-aware closure of the N-phase Navier--Stokes--Cahn--Hilliard mixture model

M.F.P. ten Eikelder, A. Brunk · 2026

Diffuse-interface (phase-field) models are widely used to describe multiphase mixtures and their interfacial dynamics. In multiphase settings, however, the constitutive closure should remain meaningfu…

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AI & Data Science Preprint PDF DOI

Multi-Level Narrative Evaluation Outperforms Lexical Features for Mental Health

Yuxi Ma, Jieming Cui, Muyang Li, Ye Zhao, Yu Li, Yixuan Wang, Chi Zhang, Yinyin Zang, Yixin Zhu · 2026

How people narrate their experiences offers a window into how the mind organizes them. Computational approaches to therapeutic writing have evolved from lexical counting to neural methods, yet remain …

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Physics Preprint PDF DOI

High-Girth Regular Quantum LDPC Codes from Square-Base Hypergraph Products via CPM Lifts

Koki Okada, Kenta Kasai · 2026

We study square-base Calderbank--Shor--Steane (CSS) hypergraph-product codes as a finite-length class for regular high-girth quantum low-density parity-check (LDPC) design. For base matrices of small …

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Physics Preprint PDF DOI

Asymmetric freezing of a sliding droplet on an inclined surface

Sivanandan Kavuri, George Karapetsas, Chander Shekhar Sharma, Kirti Chandra Sahu · 2026

We investigate the asymmetric freezing of a liquid droplet sliding on an inclined cold surface using numerical simulations based on the lubrication approximation. The combined effects of gravity, capi…

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Physics Preprint PDF DOI

The major cluster merger in Abell 2034 as seen by XRISM: Strong turbulence and spectral anomalies?

Annie Heinrich, Irina Zhuravleva, Eugene Churazov, Congyao Zhang, Daniele Rogantini, Hannah McCall, Reinout J. van Weeren, William R. Forman · 2026

XRISM observations to date have shown that gas kinetic pressures in the intracluster medium (ICM) tend towards the low end of predictions from cosmological simulations. Here, we present a XRISM observ…

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Physics Preprint PDF DOI

A Rare Eddington-Limited, Heavily Obscured Low-Mass Active Galactic Nucleus Likely Triggered by a Galaxy Merger

Shouyi Wang, Fan Zou, Chang-Hao Chen, W. N. Brandt, Elena Gallo, Bin Luo, Xue-Bing Wu, Yuming Fu, Dieu D. Nguyen, Shengxiu Sun · 2026

We report a detailed analysis of GAMA 376183, a powerful, heavily obscured active galactic nucleus (AGN) hosted by a low-mass galaxy ($M_\star \approx 10^{10}~M_{\odot}$) likely experiencing a galaxy …

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Mathematics Preprint PDF DOI

On the meagerness of the set of irregular bundles on Hopf surfaces

Edoardo Ballico, Elizabeth Gasparim · 2026

Let $\mathcal M_{r,c}$ denote the moduli space of stable bundles with rank $r$ and second Chern class $c>0$ on a Hopf surface. We prove that the subset of $\mathcal M_{r,c}$ formed by irregular bundle…

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Mathematics Preprint PDF DOI

Large flats in large subgraphs of fine curve graphs

Ryan Dickmann, Roberta Shapiro · 2026

The fine curve graph of a surface is a graph whose vertices are essential simple closed curves and whose edges connect disjoint curves. Following a rich history of hyperbolicity of various graphs asso…

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AI & Data Science Preprint PDF DOI

Analyzing LLM Reasoning to Uncover Mental Health Stigma

Sreehari Sankar, Aliakbar Nafar, Mona Barman, Hannah K. Heitz, Ashwin Kumar, Pouria Tohidi, Dailun Li, Danish Hussain, Russell DuBois, Hamed Hasheminia, Farshad Majzoubi · 2026

While large language models (LLMs) are increasingly being explored for mental health applications, recent studies reveal that they can exhibit stigma toward individuals with psychological conditions. …

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Physics Preprint PDF DOI

Operating a contextual Stern-Gerlach apparatus

Th. K. Mavrogordatos · 2026

We propose a contextual cavity/circuit QED analogue and extension of the Stern-Gerlach experiment, where the pseudo-spin of a two-state `atomic' transition plays the role of the ``spin'', while the re…

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AI & Data Science Preprint PDF DOI

Uncovering Latent Patterns in Social Media Usage and Mental Health: A Clustering-Based Approach Using Unsupervised Machine Learning

Md All Shahria, Sanjeda Dewan Mithila, Touhid Alam, Mohammad Sakib Mahmood, Mahfuza Khatun · 2026

The widespread adoption of social media has heightened interest in its psychological effects, particularly on mental health indicators such as anxiety, depression, loneliness, and sleep quality, as th…

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Mathematics Preprint PDF DOI

A well posed and stable canonical evaporation model problem for phase-change in two-phase flows

Jan Nordstrom · 2026

We formulate a well posed interface formulation for canonical one-dimensional evaporation two-phase model problems (the Stefan and Sucking problems) commonly used to validate production codes. We focu…

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Mathematics Preprint PDF DOI

Countable Fan Tightness and Selection Games in Group-Valued Function Spaces

Souvik Mandal, Ankur Sarkar · 2026

Game-theoretic characterizations of selection principles provide a powerful framework for analyzing covering properties through strategic interactions. For a Tychonoff space $X$ and a non-trivial metr…

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AI & Data Science Preprint PDF DOI

K-SENSE: A Knowledge-Guided Self-Augmented Encoder for Neuro-Semantic Evaluation of Mental Health Conditions on Social Media

Vijay Yadav · 2026

Early detection of mental health conditions, particularly stress and depression, from social media text remains a challenging open problem in computational psychiatry and natural language processing. …

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AI & Data Science Preprint PDF DOI

A Benchmark Suite of Reddit-Derived Datasets for Mental Health Detection

Khalid Hasan, Jamil Saquer · 2026

The growing availability of online support groups has opened up new windows to study mental health through natural language processing (NLP). However, it is hindered by a lack of high-quality, well-va…

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Physics Preprint PDF DOI

Quark Number Susceptibilities and Conserved Charge Fluctuations in $(2+1)$-flavor QCD with M\"obius domain-wall fermions (MDWF)

Jishnu Goswami, Yasumichi Aoki, Hidenori Fukaya, Shoji Hashimoto, Issaku Kanamori, Takashi Kaneko, Yoshifumi Nakamura, David Ward, Yu Zhang (JLQCD Collaboration) · 2026

We calculate second- and selected fourth-order conserved-charge fluctuations in $(2+1)$-flavor QCD using M\"obius domain-wall fermions (MDWF) along a line of constant physics. Gauge ensembles were gen…

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Mathematics Preprint PDF DOI

Laplace Transform driven Stein-type Goodness-of-fit Tests for Pareto Distribution

Deepesh Bhati, Sakshi Khandelwal · 2026

The Pareto distribution plays a crucial role in various disciplines, necessitating robust goodness-of-fit tests for its validation. This article introduces a novel tests based on Stein's characterizat…

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Mathematics Preprint PDF DOI

On the induction functor from group algebras to distribution algebras

Christopher P. Bendel, Daniel K. Nakano, Cornelius Pillen · 2026

Let $G$ be a reductive algebraic group scheme defined over ${\mathbb F}_{p}$ and $k$ be an algebraically closed field of characteristic $p$. There are two associated families of finite group schemes, …

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Economics & Finance Preprint PDF DOI

Pricing and Hedging Financial Derivatives in Merger\&Acquisition Deals with Price Impact

Emilio Barucci, Yuheng Lan, Daniele Marazzina · 2026

We investigate the optimal execution of contracts that are used in merger\&acquisition deals. We consider cash-settled and physically delivered contracts between a broker and a counterpart. Contracts …

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AI & Data Science Preprint PDF DOI

CARE: Counselor-Aligned Response Engine for Online Mental-Health Support

Hagai Astrin, Ayal Swaid, Avi Segal, Kobi Gal · 2026

Mental health challenges are increasing worldwide, straining emotional support services and leading to counselor overload. This can result in delayed responses during critical situations, such as suic…

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