Tootfinder

Mit dem ganzen Team im RE70 Plätze beisammen gesichert. Teamarbeit läuft.
Dann wird der Wagen evakuiert, weil alle Türen zum Ein- und Aussteigen defekt sind. Jetzt sitzen wir verteilt in einem anderen Wagen.
Der große Vorteil der Bahn wäre die Möglichkeit, zu arbeiten während man reist. Diese Möglichkeit müssten die die Bundesregierung, DB und das deutsche Schienennetz mit Technik, Schienennetz, Qualitatssicherung verlässlich schaffen.

This https://arxiv.org/abs/2412.12810 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nli…

Traveling Bubbles and Vortex Pairs within Symmetric 2D Quantum Droplets
We disclose a class of stable nonlinear traveling waves moving at specific constant velocities within symmetric two-dimensional quantum droplets. We present a comprehensive analysis of these traveling bubbles and identify three qualitatively distinct regions within the one-parameter family of solutions, classified by velocity: (i) well-separated phase singularities at low velocity, (ii) singularities within the same density dip at intermediate velocity, and (iii) rarefaction pulses without sing…

Phantom Crossing and Oscillating Dark Energy with $F(R)$ Gravity
Shin'ichi Nojiri, S. D. Odintsov, V. K. Oikonomou
https://arxiv.org/abs/2506.21010 htt…

Phantom Crossing and Oscillating Dark Energy with $F(R)$ Gravity
In this work, we shall consider how a dynamical oscillating and phantom crossing dark energy era can be realised in the context of $F(R)$ gravity. We approach the topic from a theoretical standpoint, considering all the conditions that may lead to a consistent phantom crossing behaviour and separately how the $F(R)$ gravity context may realise an oscillating dark energy era. Apart from our qualitative considerations, we study quantitatively two $F(R)$ gravity dark energy models, which are viabl…

Electric field-induced clustering in nanocomposite films of highly polarizable inclusions
Elshad Allahyarov, Hartmut L\"owen
https://arxiv.org/abs/2506.20903

Electric field-induced clustering in nanocomposite films of highly polarizable inclusions
A nanocomposite film containing highly polarizable inclusions in a fluid background is explored when an external electric field is applied perpendicular to the planar film. For small electric fields, the induced dipole moments of the inclusions are all polarized in field direction, resulting in a mutual repulsion between the inclusions. Here we show that this becomes qualitatively different for high fields: the total system self-organizes into a state which contains both polarizations, parallel…

Enhancing Programming Pair Workshops: The Case of Teacher Pre-Prompting
Johan Petersson
https://arxiv.org/abs/2506.20299 https://arxi…

Enhancing Programming Pair Workshops: The Case of Teacher Pre-Prompting
This paper explores the pedagogical potential of "teacher pre-prompting" as a means of guiding student collaboration in programming education. In particular, we investigate how brief teacher-initiated questions posed before students engage in pair programming workshops can help shape problem interpretation and division of labor. Based on qualitative analysis of video data from a university course in systems development, we identify five distinct pre-prompting patterns. Our findings suggest that…

Log-concavity and anti-maximum principles for semilinear and linear elliptic equations
Fran\c{c}ois Hamel (I2M), Nikolai Nadirashvili (I2M)
https://arxiv.org/abs/2506.20250

Log-concavity and anti-maximum principles for semilinear and linear elliptic equations
This paper is concerned with existence and qualitative properties of positive solutions of semilinear elliptic equations in bounded domains with Dirichlet boundary conditions. We show the existence of positive solutions in the vicinity of the linear equation and the log-concavity of the solutions when the domain is strictly convex. We also review the standard results on the log-concavity or the more general quasi-concavity of solutions of elliptic equations. The existence and other convergence …

Computationally Intensive Research: Advancing a Role for Secondary Analysis of Qualitative Data
Kaveh Mohajeri, Amir Karami
https://arxiv.org/abs/2506.04230

Computationally Intensive Research: Advancing a Role for Secondary Analysis of Qualitative Data
This paper draws attention to the potential of computational methods in reworking data generated in past qualitative studies. While qualitative inquiries often produce rich data through rigorous and resource-intensive processes, much of this data usually remains unused. In this paper, we first make a general case for secondary analysis of qualitative data by discussing its benefits, distinctions, and epistemological aspects. We then argue for opportunities with computationally intensive seconda…

Cluster Expansion Toward Nonlinear Modeling and Classification
Adrian Stroth, Claudia Draxl, Santiago Rigamonti
https://arxiv.org/abs/2506.18695 https://…

Cluster Expansion Toward Nonlinear Modeling and Classification
A quantitative first-principles description of complex substitutional materials like alloys is challenging due to the vast number of configurations and the high computational cost of solving the quantum-mechanical problem. Therefore, materials properties must be modeled. The Cluster Expansion (CE) method is widely used for this purpose, but it struggles with properties that exhibit non-linear dependencies on composition, often failing even in a qualitative description. By looking at CE through …

Tracker Installations Are Not Created Equal: Understanding Tracker Configuration of Form Data Collection
Julia B. Kieserman, Athanasios Andreou, Chris Geeng, Tobias Lauinger, Damon McCoy
https://arxiv.org/abs/2506.16891

Tracker Installations Are Not Created Equal: Understanding Tracker Configuration of Form Data Collection
Targeted advertising is fueled by the comprehensive tracking of users' online activity. As a result, advertising companies, such as Google and Meta, encourage website administrators to not only install tracking scripts on their websites but configure them to automatically collect users' Personally Identifying Information (PII). In this study, we aim to characterize how Google and Meta's trackers can be configured to collect PII data from web forms. We first perform a qualitative analysis of how…

Virtual Interviewers, Real Results: Exploring AI-Driven Mock Technical Interviews on Student Readiness and Confidence
Nathalia Gomez, S. Sue Batham, Mathias Volonte, Tiffany D. Do
https://arxiv.org/abs/2506.16542

Virtual Interviewers, Real Results: Exploring AI-Driven Mock Technical Interviews on Student Readiness and Confidence
Technical interviews are a critical yet stressful step in the hiring process for computer science graduates, often hindered by limited access to practice opportunities. This formative qualitative study (n=20) explores whether a multimodal AI system can realistically simulate technical interviews and support confidence-building among candidates. Participants engaged with an AI-driven mock interview tool featuring whiteboarding tasks and real-time feedback. Many described the experience as realis…