Tootfinder

Today we used a "Grätzlrad" (one of many free cargo bikes provided by the Mobilitätsagentur Wien) to transport our old stove to the recycling center. #bicycle

Higher-order thermal transport theory for phonon thermal transport in semiconductors using lattice dynamics calculations and the Boltzmann transport equation
Ankit Jain, Yagyank Srivastava, Amey G. Gokhale, Nidheesh Virakante, Hardik L. Kagdada
https://arxiv.org/abs/2505.23307

Higher-order thermal transport theory for phonon thermal transport in semiconductors using lattice dynamics calculations and the Boltzmann transport equation
The phonon thermal conductivity of semiconducting periodic solids can be obtained using the lattice dynamics calculations along with the Boltzmann transport equation and with input from density functional theory calculations. These calculations have resulted in an excellent agreement with experiments without requiring any fitting parameters. However, over the last decade, many material systems have been identified where the lowest level lattice dynamics theory, which is based on the relaxation …

Today we used a "Grätzlrad" (one of many free cargo bikes provided by the Mobilitätsagentur Wien) to transport our old stove to the recycling center. #bicycle

This https://arxiv.org/abs/2503.06207 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

Transport and response coefficients in second-order dissipative relativistic hydrodynamics with quantum corrections: probing the quark-gluon plasma
A functional measure encompasses quantum corrections and is explored in the fluid/gravity correspondence. Corrections to response and transport coefficients in the second-order dissipative relativistic hydrodynamics are proposed, including the ones to the pressure, the relaxation time, and the shear relaxation. Their dependence on the quark-gluon plasma (QGP) temperature sets a temperature dependence on the running parameter encoding the one-loop quantum gravity correction, driven by a function…

This https://arxiv.org/abs/2501.05440 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Enabling GPU Portability into the Numba-JITed Monte Carlo Particle Transport Code MC/DC
The Center for Exascale Monte Carlo Neutron Transport is developing Monte Carlo / Dynamic Code (MC/DC) as a portable Monte Carlo neutron transport package for rapid numerical methods exploration on CPU- and GPU-based high-performance computers. In this paper, we describe MC/DC's current event-based GPU algorithm as well as the just-in-time (JIT) compilation scheme we use to enable GPU operability on Nvidia and AMD GPUs from MC/DC's Python source. To analyze performance, we conduct runtime tests…

Geometry effects on zonal flow dynamics and turbulent transport in optimized stellarators
Haotian Chen, Xishuo Wei, Hongxuan Zhu, Zhihong Lin
https://arxiv.org/abs/2505.21886

Geometry effects on zonal flow dynamics and turbulent transport in optimized stellarators
Global gyrokinetic simulations find a strong suppression of ion temperature gradient (ITG) turbulence by zonal flows in stellarators optimized for neoclassical transport. The reduction of the ITG transport by the zonal flows in quasi-helicalsymmetric (QH) and quasi-isodynamic (QI) stellarators are much larger than a quasi-axisymmetric (QA) stellarator or a tokamak, thanks to higher linear residual levels and lower nonlinear frequencies of the zonal flows in the QH and QI. The transport level an…

This https://arxiv.org/abs/2405.19130 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Study of the transverse momentum distribution of transport models of kaon, Pion, and (anti-)proton production in U+U collisions at $\sqrt{s_{NN}}$ = 193 GeV
In this study, the transverse momentum spectra of $k ^{\pm }$, $π^{\pm }$ and $p(\bar{p})$ particles in mid-rapidity ($\left | y \right | < 0.1$) for nine centrality classes are investigated in $^{238} U$+$^{238} U$ collisions at $\sqrt{s_{NN}}$=193 GeV within the cascade and soft momentum-dependent equation of state (SM-EoS) mode of the UrQMD model. Other extracted observable from $p_{T}$ spectrum includes average transverse momentum ($\left \langle p_{T} \right \rangle$), the yield…

Unconventional magnon transport in antiferromagnet NiPS$_3$ induced by an anisotropic spin-flop transition
Peisen Yuan, Beatriz Mart\'in-Garc\'ia, Evgeny Modin, M. Xochitl Aguilar-Pujol, F\`elix Casanova, Luis E. Hueso
https://arxiv.org/abs/2505.23482

Unconventional magnon transport in antiferromagnet NiPS$_3$ induced by an anisotropic spin-flop transition
Nonlocal magnon transport can provide valuable insight into the magnetic properties of magnetic insulators (MIs). A spin-flop transition, a typical magnetic reorientation in antiferromagnets, is expected to affect mag non transport, but studies on this topic are still rare and remain challenging, especially for van der Waals materials. Here we demonstrate the unconventional magnon transport driven by an anisotropic spin-flop transition in the van der Waals antiferromagnet NiPS$_3$. Examining th…

Video Streaming Over QUIC: A Comprehensive Study
Jashanjot Singh Sidhu, Abdelhak Bentaleb
https://arxiv.org/abs/2505.21769 https://ar…

Video Streaming Over QUIC: A Comprehensive Study
The QUIC transport protocol represents a significant evolution in web transport technologies, offering improved performance and reduced latency compared to traditional protocols like TCP. Given the growing number of QUIC implementations, understanding their performance, particularly in video streaming contexts, is essential. This paper presents a comprehensive analysis of various QUIC implementations, focusing on their congestion control (CC) performance in single-server, multi-client environme…

Dissecting Exciton-Polariton Transport in Organic Molecular Crystals: Emerging Conductivity Assisted by Intermolecular Vibrational Coupling
Guangming Liu, Hsing-Ta Chen
https://arxiv.org/abs/2505.21888

Dissecting Exciton-Polariton Transport in Organic Molecular Crystals: Emerging Conductivity Assisted by Intermolecular Vibrational Coupling
In this work, we systematically investigate the spectral and transport properties of exciton-polaritons under the explicit influence of intermolecular vibrational coupling, which introduces dynamic disorder. In the context of a one-dimensional molecular chain strongly interacting with a cavity photon, we demonstrate the polaritonic characteristics of the spectral function and its interactions with the electronic band broadened by the coupling disorder. We further dissect the current flux into i…

Softness and Hydrodynamic Interactions Regulate Lipoprotein Transport in Crowded Yolk Environments
Nimmi Das Anthuparambil, Michelle Dargasz, Sonja Timmermann, Anita Girelli, Sebastian Retzbach, Johannes M\"oller, Wonhyuk Jo, Agha Mohammad Raza, Aliaksandr Leonau, James Wrigley, Frederik Unger, Maddalena Bin, Prince Prabhu Rajaiah, Iason Andronis, William Ch\`evremont, J\"org Hallmann, Angel Rodriguez-Fernandez, Jan-Etienne Pudell, Felix Brausse, Ulrike Boesenberg, Mohamed Yo…

Softness and Hydrodynamic Interactions Regulate Lipoprotein Transport in Crowded Yolk Environments
Low-density lipoproteins (LDLs) serve as nutrient reservoirs in egg yolk for embryonic development and as promising drug carriers. Both roles critically depend on their mobility in densely crowded biological environments. Under these crowded conditions, diffusion is hindered by transient confinement within dynamic cages formed by neighboring particles, driven by solvent-mediated hydrodynamic interactions and memory effects -- phenomena that have remained challenging to characterize computationa…

The BC Ministry of Transport has an album of all the pictures they have been taking of the Broadway Subway project. This can be found on flickr at
https://www.flickr.com/photos/tranbc/albums/72157706275278374/

Two-gap superconductor ZrB12 with dynamic stripes and charge density waves: Crystal structure, physical properties and pairing mechanism
A. N. Azarevicha, N. B. Bolotinab, O. N. Khrykinab, A. V. Bogacha, K. M. Krasikova, A. Yu. Tsvetkovc, S. Yu. Gavrilkinc, V. V. Voronova, S. Gabanid, K. Flachbartd, A. N. Azarevich, N. B. Bolotina, O. N. Khrykina, A. V. Bogach, K. M. Krasikov, A. Yu. Tsvetkov, S. Yu. Gavrilkin, V. V. Voronov, S. Gabani, K. Flachbart, A. V. Kuznetsov, N. E. Sluchanko

Two-gap superconductor ZrB12 with dynamic stripes and charge density waves: Crystal structure, physical properties and pairing mechanism
A review of long-term studies of ZrB12 and LuB12 superconductors with very similar conduction bands and phonon spectra, but with radically different (by a factor of 15-20) critical temperatures and magnetic fields is presented. A detailed analysis of well-known studies in combination with new results of structural, thermodynamic and charge transport measurements obtained here for these metallic dodecaborides with Jahn-Teller instability of the rigid boron network and with dynamic charge stripes…

Modeling extreme events and intermittency in turbulent diffusion with a mean gradient
Mustafa A Mohamad, Di Qi
https://arxiv.org/abs/2505.21688 https://

Modeling extreme events and intermittency in turbulent diffusion with a mean gradient
We study the statistical properties of passive tracer transport in turbulent flows with a mean gradient, emphasizing tracer intermittency and extreme events. An analytically tractable model is developed, coupling zonal and shear velocity components with both linear and nonlinear stochastic dynamics. Formulating the model in Fourier space, a simple explicit solution for the tracer invariant statistics is derived. Through this model we identify the resonance condition responsible for non-Gaussian…

If 1/2 of the road space would be reserved for slow traffic:
👉 1/2 of the passenger kilometres travelled by car can be shifted to public transport, e-bikes, bicycles & walking
👉 CO₂ emissions could be cut by 40%
👉 a reduction in accidents could save up to 76 million Swiss francs annually
👉 Mobility will also become cheaper for households
👉 from current damages of around 500 million Swiss francs into long-term benefits of around 1 billion
Nice visualisations…

“The lack of vision has led transport policy down a dead end.”
Cities can expand their bike lane networks significantly without causing additional congestion on the roads. That is the conclusion reached by the ETH research project E-Bike City. Project lead and transport researcher Kay Axhausen explains the implications for traffic, the environment and costs. 

This https://arxiv.org/abs/2404.15138 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Estimating Longitudinal Polarization of $Λ$ and $\barΛ$ Hyperons at Relativistic Energies using Hydrodynamic and Transport models
The global and local spin polarization measurements of $Λ$ ($\barΛ$) hyperons by STAR and ALICE Collaborations open up an immense interest in investigating the spin polarization dynamics in heavy-ion collisions. Recent studies suggest the transverse component of the vorticity field is responsible for the global spin polarization. In contrast, the longitudinal component of the vorticity field accounts for the local spin polarization. The local (longitudinal) spin polarization of $Λ$-hyperons …

This https://arxiv.org/abs/2409.04668 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Performance Portable Monte Carlo Neutron Transport in MCDC via Numba
Finding a software engineering approach that allows for portability, rapid development, and open collaboration for high-performance computing on GPUs and CPUs is a challenge. We implement a portability scheme using the Numba compiler for Python in Monte Carlo / Dynamic Code (MC/DC), a new neutron transport application for rapidly developing Monte Carlo. Using this scheme, we have built MC/DC as an application that can run as a pure Python, compiled CPU, or compiled GPU solver. In GPU mode, we u…

This https://arxiv.org/abs/2505.05386 has been replaced.
initial toot: https://mastoxiv.page/@a…

Ballistic-to-diffusive transition in engineered counter-propagating quantum Hall channels
Exotic quantum Hall systems hosting counter-propagating edge states can show seemingly non-universal transport regimes, usually depending on the size of the sample. We experimentally probe transport in a quantum Hall sample engineered to host a tunable number of counter-propagating edge states. The latter are coupled by Landauer reservoirs, which force charge equilibration over a tunable effective length. We show that charge transport is determined by the balance of up- and downstream channels,…

Rolling, sliding and trapping of driven particles in square obstacle lattices
Galor Geva, Arin Escobar, Paula Magrinya, Pablo Llombart, Alfredo Alexander-Katz, Laura R. Arriaga, Juan L. Aragones
https://arxiv.org/abs/2505.21702

Rolling, sliding and trapping of driven particles in square obstacle lattices
Transport phenomena in complex and dynamic microscopic environments are fundamentally shaped by hydrodynamic interactions. In particular, microparticle transport in porous media is governed by the delicate interplay between particle-substrate friction and pressure forces. Here, we systematically investigate the motion of externally driven rotating magnetic microparticles near a substrate patterned with a square lattice of cylindrical obstacles, a model porous medium. Remarkably, we observe a re…

Logistikkonzerne für den Krieg https://www.german-foreign-policy.com/news/detail/9950

Dimensionality-Driven Anomalous Metallic State with Zero-field Nonreciprocal Transport in Layered Ising Superconductors
Yanwei Cui, Zenglin Liu, Qin Liu, Junlin Xiong, Yongqin Xie, Yudi Dai, Ji Zhou, Lizheng Wang, Hanyan Fang, Haiwen Liu, Shi-Jun Liang, Bin Cheng, Feng Miao
https://arxiv.org/abs/2505.22274

Dimensionality-Driven Anomalous Metallic State with Zero-field Nonreciprocal Transport in Layered Ising Superconductors
The anomalous metal state (AMS), observed in failed superconductors, provides insights into superconductivity and quantum criticality, with studies revealing unconventional quantum phases like the Bose metal. Recently, layered transition metal dichalcogenide (TMD) superconductors approaching the two-dimensional limit have garnered significant attention for the enhanced phase fluctuations and electronic correlations. Investigating AMS in these systems, particularly in the absence of an external …

The Effect of the Gotthard Base Tunnel on Road Traffic: A Synthetic Control Approach
Hannes Wallimann, Widar von Arx, Ann Hesse
https://arxiv.org/abs/2505.21129

The Effect of the Gotthard Base Tunnel on Road Traffic: A Synthetic Control Approach
The opening of the Gotthard Base Tunnel in 2017, the longest railway tunnel in the world, marked a milestone in Swiss transport policy. The tunnel, a part of the New Rail Link through the Alps, serves as a key instrument of the so-called "modal shift policy," which aims to transfer transalpine freight traffic from road to rail. The reduction in travel time by train between northern and southern Switzerland raised expectations that a substantial share of tourist-oriented passenger traffic would …

I've read now through the "Streets for kids" #cityranking report: https://cleancitiescampaign.org/city-ranking-2025/

Streets for Kids, Cities for All: City Ranking 2025
We've analysed 36 European cities to see how they’re progressing in creating transport systems that prioritise the needs of children.

This https://arxiv.org/abs/2503.05253 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nuc…

Electromagnetic emission from strongly interacting hadronic and partonic matter created in heavy-ion collisions
We investigate dilepton production in heavy-ion, proton-proton, and proton-nucleus collisions from low energies of 1 AGeV (SIS) to ultra-relativistic energies (LHC) using the Parton-Hadron-String Dynamics (PHSD) transport approach. PHSD is a microscopic, non-equilibrium approach that integrates hadronic and partonic degrees of freedom, providing a comprehensive description of relativistic heavy-ion collisions from initial nucleon-nucleon interactions to quark-gluon plasma (QGP) formation, hadro…

Streaming Remote rendering services: Comparison of QUIC-based and WebRTC Protocols
Daniel Mej\'ias, Inhar Yeregui, \'Angel Mart\'in, Roberto Viola, Pablo Angueira, Jon Montalb\'an
https://arxiv.org/abs/2505.22132

Streaming Remote rendering services: Comparison of QUIC-based and WebRTC Protocols
The proliferation of Extended Reality (XR) applications, requiring high-quality, low-latency media streaming, has driven the demand for efficient remote rendering solutions. This paper focuses on holographic conferencing in virtual environments and their required uplink and downlink media transmission capabilities. By examining Media over QUIC (MoQ), Real-time Transport Protocol (RTP) over QUIC (RoQ), and Web Real-Time Communication (WebRTC), we assess their latency performance over Wi-Fi and 5…

So, ab nun ist das "Ringelsöckchen" Motiv - neben drölfzig anderen Motiven - auch bei dem listing der Pillendosen auswählbar.
Handgemalter #wandklexschmuck, eh klar, so zu finden auf #miniaturepainting #watercolor #watercolour #art #artShop #fediart #mastoart #creativeToots

Backscattering Study of Electrons from 0.1 to 3.4 MeV
M. Kanafani (Universit\'e de Caen Normandie, ENSICAEN, CNRS/IN2P3, LPC Caen, UMR6534, France), X. Fl\'echard (Universit\'e de Caen Normandie, ENSICAEN, CNRS/IN2P3, LPC Caen, UMR6534, France), O. Naviliat-Cuncic (Universit\'e de Caen Normandie, ENSICAEN, CNRS/IN2P3, LPC Caen, UMR6534, France, Facility for Rare Isotope Beams and Department of Physics and Astronomy, Michigan State University, USA, International Research…

Backscattering Study of Electrons from 0.1 to 3.4 MeV
Benchmarking simulation codes for electron transport and scattering in matter is a crucial step for estimating uncertainties in many applications. However, experimental data for electron energies of a few MeV is scarce to make such comparisons. We report here the measurement and the quantitative analysis of backscattering probabilities of electrons in the energy range 0.1 to 3.4~MeV impinging on YAP:Ce scintillator. The setup consists of a $2\times 2π$ calorimeter which enables, in particular,…

Geometric Shape Modelling and Volume Estimation of Dry Bulk Cargo Piles using a Single Image
Debanshu Ratha, Madhu Koirala, P{\aa}l Gunnar Ellingsen
https://arxiv.org/abs/2505.17896

Geometric Shape Modelling and Volume Estimation of Dry Bulk Cargo Piles using a Single Image
Volume estimation of onshore cargo piles is of economic importance for shipping and mining companies as well as public authorities for real-time planning of logistics, business intelligence, transport services by land or sea and governmental oversight. In remote sensing literature, the volume of pile is estimated by relying on the illumination property of object to construct the geometric shape from a single image, alternatively, stereographic imaging for construction of a digital elevation mod…

As a fan of train travel I get this.

Opinion | Europe Built Trains. America Built Highways and Regret.
As Europe embraces the night train, the United States seems to be sleepwalking into a transport dead end.

Greater Manchester still has a long way to go on protected cycling infrastructure.
Share of protected cycling infra-
structure of total roads %:
Paris 44
Hamburg 33
Barcelona 19
Waraw 15
G London 8
Manchester 8 rank 29/36
Did better on school streets and safe speeds
https…

Streets for Kids, Cities for All: Protected cycling infrastructure ranking
We've analysed 36 European cities to see how they’re progressing in creating transport systems that prioritise the needs of children.

Preliminary results from the CLEAR nonlinear plasma lens experiment
P. Drobniak, E. Adli, H. B. Anderson, K. N. Sjobak, C. A. Lindstr{\o}m, A. Dyson, S. M. Mewes, M. Th\'evenet
https://arxiv.org/abs/2505.21313

Preliminary results from the CLEAR nonlinear plasma lens experiment
Plasma lensing provides compact focusing of electron beams, since they offer strong focusing fields (kT/m) in both planes simultaneously. This becomes particularly important for highly diverging beams with a large energy spread such as those typically originating from plasma accelerators. The lens presented here is a nonlinear active plasma lens, with a controlled focusing-strength variation purposely introduced in one transverse direction. This lens is a key element of a larger transport latti…

From the BC Green Party
Premier David Eby is seriously considering a fossil fuel megaproject that would sell out BC’s energy future to Donald Trump’s corporate allies.
The Prince Rupert Gas Transmission (PRGT) pipeline is backed by MAGA-linked billionaires and would transport fracked gas across Northern BC to a new LNG terminal.
Eby himself once said that we can’t keep building fossil fuel projects and still meet our climate goals. So why is his government even considering t…

Sonnet 117 - CXVII
Accuse me thus: that I have scanted all,
Wherein I should your great deserts repay,
Forgot upon your dearest love to call,
Whereto all bonds do tie me day by day;
That I have frequent been with unknown minds,
And given to time your own dear-purchased right;
That I have hoisted sail to all the winds
Which should transport me farthest from your sight.
Book both my wilfulness and errors down,
And on just proof surmis…

Numerical asymptotics of near-axis expansions of quasisymmetric magnetohydrostatic equilibria with anisotropic pressure
Lanke Fu, Eduardo Rodriguez, Rory Conlin, Amitava Bhattacharjee
https://arxiv.org/abs/2505.20475

Numerical asymptotics of near-axis expansions of quasisymmetric magnetohydrostatic equilibria with anisotropic pressure
Quasisymmetry (QS) is a property of special magnetic configurations, where the magnetic field strength, but not necessarily the full vector field, has a direction of symmetry. QS leads to reduced neoclassical transport and thus can be a desirable property in stellarator design. The Garren-Boozer (GB) conundrum has been interpreted to mean that globally quasisymmetric magnetohydrostatic (MHS) equilibria, other than axisymmetric solutions, with isotropic pressure do not exist. When expanded as po…

This https://arxiv.org/abs/2406.18974 has been replaced.
initial toot: https://mastoxiv.page/@a…

Non-Hermitian minimal Kitaev chains
Starting from a double quantum dot realization of a minimal Kitaev chain, we demonstrate that non-Hermicity stabilizes the so-called poor man's Majorana zero modes in a region of parameter space that is much broader than in the Hermitian regime. In particular, we consider the simplest non-Hermitian mechanism which naturally appears due to coupling to normal reservoirs and is commonly present in all transport experiments. Specifically, such couplings induce exceptional points which connect stabl…

This https://arxiv.org/abs/2505.04411 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nli…

Turbulence spreading and anomalous diffusion on combs
This paper presents a simple model for such processes as chaos spreading or turbulence spillover into stable regions. In this simple model the essential transport occurs via inelastic resonant interactions of waves on a lattice. The process is shown to result universally in a subdiffusive spreading of the wave field. The dispersion of this spreading process is found to depend exclusively on the type of the interaction process (three- or four-wave), but not on a particular instability behind. Th…

The party that was supposed to be good at managing the nation's finances cancelled the second leg of #HS2. Apparently, to save £36 billion, which "would instead be allocated to infrastructure projects to provide better transport links across the north of England." Yet we still do not really know the cancellation cost, or whether anything will really be spent extra on the north of Englan…

So it finally happened: episode 11 of season 7 of #TheRookie jumped the shark. On the day the LAPD takes an interest on going undercover on public transport, a couple of baddies enter the bus with a bomb strapped to their chest asking for a 100 million. What are the odds? And the episode is called 'Speed', that is not being subtle but jackhammering it in. Oh well, it was fun while i…

This https://arxiv.org/abs/2411.08988 has been replaced.
initial toot: https://mastoxiv.page/@arXi…

Single-File Diffusion of Active Brownian Particles
Single-file diffusion (SFD) is a key mechanism underlying transport phenomena in confined physical and biological systems. In a typical SFD process, microscopic particles are restricted to moving in a narrow channel where they cannot pass one another, resulting in constrained motion and anomalous long-time diffusion. In this study, we use Brownian dynamics simulations and analytical theory to investigate the SFD of athermal active Brownian particles (ABPs), a minimal model of active colloids. B…

It was great to have @… around this week for @… 's PhD defense and to talk all things #bicycle

This https://arxiv.org/abs/2502.11216 has been replaced.
initial toot: https://mastoxiv.page/@a…

Exploring nonlinearities in a positive ion-negative ion (PINI) plasma: can other processes mimic debris-induced effects?
In this work, an analysis of nonlinear waves and structures induced by an external charged debris in a positive ion-negative ion (PINI) plasma is presented. The results obtained are compared with findings from available experiments involving PINI plasma. The process of formation of different nonlinear structures is examined theoretically through a forced Korteweg-de Vries (fKdV) equation, which is also verified with a multi-fluid flux-corrected transport simulation code mFCT. Various processes …

I had the opportunity to deliver a 1.5-hour session at @… on the topic of "Transport Modelling at SBB", as part of the course "Introduction to Transportation Systems". As an external expert from the industry, I shared insights over three chapters:
1️⃣ Data for Transport Modelling
2️⃣ Modelling Landscape at SBB and in Switzerland
3️⃣ SI…

This https://arxiv.org/abs/2504.10111 has been replaced.
initial toot: https://mastoxiv.page/@arXi…

Preliminary experimental investigation on the interaction of a subaqueous dune like granular structure with a turbulent open channel flow
We study the interaction of a subaqueous dune like granular structure with a turbulent open channel flow experimentally using optical diagnostics in the Shields and Froude parameter space ($0.05{\leq}θ{\leq}0.32$, $0.1{\leq}Fr{\leq}0.4$). Interactions between the turbulent flow and the granular structure give rise to transient erosion-deposition dynamics leading to various types of particle transport. The subaqueous structures in the channel bed evolves due to shear-stress-induced erosion, gra…

Greater Manchester still has a long way to go on protected cycling infrastructure.
Share of protected cycling infra-
structure of total roads %:
Paris 44
Hamburg 33
Barcelona 19
Waraw 15
G London 8
Manchester 8 rank 29/36
Did better on school streets and safe speeds
https…

Streets for Kids, Cities for All: Protected cycling infrastructure ranking
We've analysed 36 European cities to see how they’re progressing in creating transport systems that prioritise the needs of children.

This https://arxiv.org/abs/2504.20858 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nli…

Chaos Meets Attention: Transformers for Large-Scale Dynamical Prediction
Generating long-term trajectories of dissipative chaotic systems autoregressively is a highly challenging task. The inherent positive Lyapunov exponents amplify prediction errors over time. Many chaotic systems possess a crucial property - ergodicity on their attractors, which makes long-term prediction possible. State-of-the-art methods address ergodicity by preserving statistical properties using optimal transport techniques. However, these methods face scalability challenges due to the curse…

Robust design of bicycle infrastructure networks
https://www.nature.com/articles/s41598-025-99976-9

Robust design of bicycle infrastructure networks - Scientific Reports
Promoting active mobility like cycling relies on the availability of well-connected, high-quality bicycle networks. However, expanding these networks over an extended planning horizon presents one of the most complex challenges in transport science. This complexity arises from the intricate interactions between infrastructure availability and usage, such as network spillover effects and mode choice substitutions. In this paper, we approach the problem from two perspectives: direct optimization …

Understanding Plasma Turbulence Through Exact Coherent Structures
Sidney D. V. Williams, Matthew N. Gudorf, Dmitri M. Orlov
https://arxiv.org/abs/2505.19363

Understanding Plasma Turbulence Through Exact Coherent Structures
Plasma turbulence is a key challenge in understanding transport phenomena in magnetically confined plasmas. This work presents a novel approach using periodic orbit theory to analyze plasma turbulence, identifying fundamental structures that underpin chaotic motion. By applying numerical optimization techniques to the Kuramoto-Sivashinsky equation - a reduced model for drift-wave-driven trapped particle turbulence - we extract coherent spacetime patterns that serve as building blocks of turbule…

La VSS définit les normes dans le domaine du transport. Une nouvelle norme sur les enquêtes de mobilité va prochainement être publiée et le rapport décrivant le travail effectué pour la définir est en ligne: https://www.mobilityplatform.ch/fileadmin/

Liaison ferroviaire directe entre la 🇨🇭 et Londres : signature d’une déclaration d’intention
Berne, 09.05.2025
Albert Rösti a rencontré la ministre britannique des transports le 8 mai 2025 Š Londres. Les 2 ministres ont signé une déclaration d’intention qui prévoit une coopération renforcée dans le domaine du transport ferroviaire international de voyageurs. L’objectif de cette déclaration est de mettre en place une liaison ferroviaire directe entre la 🇨🇭 et le 🇬🇧.

This https://arxiv.org/abs/2505.01141 has been replaced.
initial toot: https://mastoxiv.page/@a…

Tailoring Heat Transfer at Silica-Water Interfaces via Hydroxyl and Methyl Surface Groups
Efficient thermal transport across solid-liquid interfaces is essential for optimizing heat dissipation in modern technological applications. This study employs molecular dynamics (MD) simulations to investigate the impact of surface functionalization on heat transfer at the silica/water interface. It has been shown that the surface functionalization changes significantly the wetting characteristics of silica surface: from one hand hydroxyl groups render such surfaces more hydrophilic, while me…

The program of the 25th Swiss Transport Research Conference (#STRC25) is now online. There will be 3 papers/presentations by employees of the Swiss Federal Railways (SBB):
👉 Quantifying Future Mobility: Scenario-Based Analysis with Agent-Based Modeling
👉 Integrating Machine Learning and MATSim for High-Granularity Passenger Load Predictions at SBB
👉 Differentiation of Modal Preferen…

Tailoring Heat Transfer at Silica-Water Interfaces via Hydroxyl and Methyl Surface Groups
Viktor Mandrolko, Konstantinos Termentzidis, David Lacroix, Mykola Isaiev
https://arxiv.org/abs/2505.01141

Tailoring Heat Transfer at Silica-Water Interfaces via Hydroxyl and Methyl Surface Groups
Efficient thermal transport across solid-liquid interfaces is essential for optimizing heat dissipation in modern technological applications. This study employs molecular dynamics (MD) simulations to investigate the impact of surface functionalization on heat transfer at the silica/water interface. It has been shown that the surface functionalization changes significantly the wetting characteristics of silica surface: from one hand hydroxyl groups render such surfaces more hydrophilic, while me…