Tootfinder

london_transport: London Transport Network
Multiplex network with 3 edge types representing links within the three layers of London train stations: Underground, Overground and DLR.
This network has 369 nodes and 441 edges.
Tags: Transportation, Public Transport, Multilayer, Weighted
https://networks.skew…

OAT-FM: Optimal Acceleration Transport for Improved Flow Matching
Angxiao Yue, Anqi Dong, Hongteng Xu
https://arxiv.org/abs/2509.24936 https://arxiv.org/pd…

OAT-FM: Optimal Acceleration Transport for Improved Flow Matching
As a powerful technique in generative modeling, Flow Matching (FM) aims to learn velocity fields from noise to data, which is often explained and implemented as solving Optimal Transport (OT) problems. In this study, we bridge FM and the recent theory of Optimal Acceleration Transport (OAT), developing an improved FM method called OAT-FM and exploring its benefits in both theory and practice. In particular, we demonstrate that the straightening objective hidden in existing OT-based FM methods i…

Conditional Risk Minimization with Side Information: A Tractable, Universal Optimal Transport Framework
Xinqiao Xie, Jonathan Yu-Meng Li
https://arxiv.org/abs/2509.23128 https:/…

Conditional Risk Minimization with Side Information: A Tractable, Universal Optimal Transport Framework
Conditional risk minimization arises in high-stakes decisions where risk must be assessed in light of side information, such as stressed economic conditions, specific customer profiles, or other contextual covariates. Constructing reliable conditional distributions from limited data is notoriously difficult, motivating a series of optimal-transport-based proposals that address this uncertainty in a distributionally robust manner. Yet these approaches remain fragmented, each constrained by its o…

Das Buch "Die Verkrempelung der Welt" (2025) von @… glitzert nicht nur - und sieht, passend zum Thema, nach Transport im Rucksack und einmal lesen schon etwas mitgenommen aus - sondern schlägt auch mit feinsinniger Empörung elegant den Bogen von schlecht designten Konsumgütern und Softwareinterfaces zu Kapitalismuskritik, Konv…

If I understand correctly, the contracts for housing asylum-serkers in ramshackle hotels (because they can't work or access benefits) are open to rip-offs by hotel owners and the taxi firms contracted to do the transport.
So the people badly served are now further demonised and will mostly be denied help to get to health appointments.
Further demonisation.
Correct me if that's wrong because the news hasn't been very clear. BBC radio 4 played a part in this.

Prolongement de la ligne bleue… sans les portes de protection
#montreal
https://www.lapresse.ca/actualit…

Heute vor 3 Jahren: Am 29. Oktober 2022 warnte Russland vor der Senkung der "nuklearen Schwelle" durch die #Stationierung modernisierter US-#Atomwaffen #B61 auf NATO-Stützpunkten in Europ…

Collective transport efficiency of microswimmer swarms optimized by tactic run-tumble dynamics
Maggie Liu, Arnold J. T. M. Mathijssen
https://arxiv.org/abs/2509.25068 https://…

Collective transport efficiency of microswimmer swarms optimized by tactic run-tumble dynamics
The collective motion of microorganisms and microrobots can be used for particle delivery, especially when guided by external magnetic fields, phototaxis, or chemotaxis. This cargo transport is enhanced significantly by hydrodynamic entrainment, where the surrounding fluid and any dissolved molecules or suspended cargo particles are dragged along with a collectively moving swarm. However, it remains unclear how this directed entrainment is affected by stochastic run-tumble motion, and how such …

Soft-hard factorization of heavy-quark transport in QCD matter at finite chemical potential
Jiale Lou, Wu Wang, Jiazhen Peng, Fei Sun, Kejun Wu, Wei Xie, Zuman Zhang, Shuang Li, Sa Wang
https://arxiv.org/abs/2509.23872

Soft-hard factorization of heavy-quark transport in QCD matter at finite chemical potential
We calculate the collisional energy loss and momentum diffusion coefficients of heavy quarks traversing a hot and dense QCD medium at finite quark chemical potential, $μ\neq0$. The analysis is performed within an extended soft-hard factorization model (SHFM) that consistently incorporates the $μ$-dependence of the Debye screening mass $M_D(μ)$ and of the fermionic thermal distribution functions. Both the energy loss and the diffusion coefficients are found to increase with $μ$, with the enh…

Interplay of Variance Reduction and Population Control in Monte Carlo Neutron Transport
Jordan Northrop, Ilham Variansyah, Todd Palmer, Camille Palmer
https://arxiv.org/abs/2509.22943

Interplay of Variance Reduction and Population Control in Monte Carlo Neutron Transport
Monte Carlo methods are widely used for neutron transport simulations at least partly because of the accuracy they bring to the modeling of these problems. However, the computational burden associated with the slow convergence rate of Monte Carlo poses a significant challenge to running large-scale simulations. The continued improvement in high-performance computing capabilities has put exascale time-dependent Monte Carlo neutron transport simulations within reach. Variance reduction techniques…

Lagrangian description and quantification of scalar mixing in fluid flows from particle tracks
Anna Kl\"unker, Alexandra von Kameke, Kathrin Padberg-Gehle
https://arxiv.org/abs/2509.25030

Lagrangian description and quantification of scalar mixing in fluid flows from particle tracks
Understanding, quantifying and controlling transport and mixing processes are central in the study of fluid flows. Many different Lagrangian approaches have been proposed for detecting organizing flow structures that determine material transport, including recent data-based methods that aim to identify such coherent objects directly from tracer trajectories. These methods have helped to gain a better understanding of the underlying dynamics. However, the quantification of scalar mixing has not …

Overcoming the curse of dimensionality: Enabling multi-layer photon transport with recurrent neural network
Daniel Carne, Ziqi Guo, Xiulin Ruan
https://arxiv.org/abs/2509.22890 …

Overcoming the curse of dimensionality: Enabling multi-layer photon transport with recurrent neural network
Monte Carlo simulations are commonly used to calculate photon reflectance, absorptance, and transmittance of multi-layer scattering and absorbing media, but they can quickly become prohibitively expensive as the number of layers increases. In this study, we show that although a plain neural network suffers from the curse of dimensionality and fails to yield acceptable predictions of multilayer media, we introduce a recurrent neural network (RNN) trained on the same Monte Carlo simulation datase…

Gauging the Standard Model 1-form symmetry via gravitational instantons
Mohamed M. Anber
https://arxiv.org/abs/2509.22788 https://arxiv.org/pdf/2509.22788

Gauging the Standard Model 1-form symmetry via gravitational instantons
We investigate the fate of the Standard Model (SM) $\mathbb Z_6^{(1)}$ electric $1$-form global symmetry in the background of gravitational instantons, focusing on Eguchi-Hanson (EH) geometries. We show that EH instantons support quantized $\mathbb Z_6^{(1)}$ fluxes localized on their $S^2$ bolt, inducing fractional topological charge without backreacting on the geometry. The requirement that quark and lepton wavefunctions be globally well-defined under parallel transport imposes boundary condi…

Reform have written to me. Wow, what a push poll. “Rising crime”, “mass immigration” (not devolved), but no mention of transport, let alone the environment (unless that’s what they mean by high energy prices).
Also, why only one set of choices for who I’m voting for? Have Reform forgotten that in a Scottish election you have two votes (constituency and list)?

Improved Stochastic Optimization of LogSumExp
Egor Gladin, Alexey Kroshnin, Jia-Jie Zhu, Pavel Dvurechensky
https://arxiv.org/abs/2509.24894 https://arxiv.…

Improved Stochastic Optimization of LogSumExp
The LogSumExp function, also known as the free energy, plays a central role in many important optimization problems, including entropy-regularized optimal transport and distributionally robust optimization (DRO). It is also the dual to the Kullback-Leibler (KL) divergence, which is widely used in machine learning. In practice, when the number of exponential terms inside the logarithm is large or infinite, optimization becomes challenging since computing the gradient requires differentiating eve…

The German love for combustion is a perpetuum mobile.
68.5% of Germans believe that their car makers are not fully committed to electric mobility.
Furthermore, 47.8% believe that politicians do not view electric mobility as the technology of the future.
https://…

Improved reconstruction of the century-long solar magnetic field by incorporating morphological asymmetry in sunspots
Subhadip Pal, Gopal Hazra, Sudip Mandal
https://arxiv.org/abs/2509.23691

Improved reconstruction of the century-long solar magnetic field by incorporating morphological asymmetry in sunspots
Accurately modeling the solar magnetic field is important for understanding long-term solar activity and space weather, but it is challenging due to limited observations, especially near the poles. The Surface Flux Transport (SFT) model simulates how magnetic flux moves across the solar surface and contributes to the polar field, but it parametrizes emerged sunspots as simple symmetric bipolar regions and needs improvement by including more realistic sunspot features. In this study, we reconstr…

Radial isoperimetry and absence of harmonic functions with $\ell^p$-gradient
Antoine Gournay
https://arxiv.org/abs/2509.22731 https://arxiv.org/pdf/2509.22…

Radial isoperimetry and absence of harmonic functions with $\ell^p$-gradient
In this paper we show that groups for which the probability of return of a random walk is bounded below by $K_1 exp(-K_2n^c)$ have no non-constant harmonic functions with gradient in $\ell^p$. The proof relies on results from $\ell^p$-cohomology, a form of radial isoperimetry, transport patterns and revisiting some results of Følner.

"When trains are pricier than planes, there’s a heavy social, financial and environmental cost"
#Transport #PublicTransport #Emissions

Numerical and analytical modeling of heat equation in current-carrying conductors using the heat equation implemented using Finite-JAX
Arturo Rodriguez, Christopher Harris, Avinash Potluri, Noah L. Estrada, Alan M. Hernandez, Vyom Kumar, Francisco O. Aguirre Ortega, Vineeth Vijaya Kumar
https://arxiv.org/abs/2509.24162

Numerical and analytical modeling of heat equation in current-carrying conductors using the heat equation implemented using Finite-JAX
Current-carrying conductors inevitably experience resistive heating due to the finite electrical conductivity of the material. The resulting temperature distribution within the wire has essential implications for structural integrity, efficiency, and long-term reliability of electronic and power systems. In this work, we model the spatiotemporal evolution of heat in a current-carrying wire using the classical heat conduction equation. In a two-dimensional formulation, heat transport is consider…

C-BerryTrans: A C code for first-principles calculation of Berry-curvature-driven anomalous Hall and Nernst conductivities
Vivek Pandey, Sudhir K. Pandey
https://arxiv.org/abs/2509.24071

C-BerryTrans: A C++ code for first-principles calculation of Berry-curvature-driven anomalous Hall and Nernst conductivities
We present C-BerryTrans, a C++ code designed for first-principles calculations of Berry-curvature-driven transverse transport properties, namely the anomalous Hall conductivity (AHC) i.e., $σ_{μν}^{AHC}$ and anomalous Nernst conductivity (ANC) i.e., $α_{μν}^{ANC}$. The code directly extracts eigenvalues and momentum-matrix elements from WIEN2k calculations and evaluates the Berry curvature ($\boldsymbolΩ$) using a Kubo-like formalism. For computational efficiency, C-BerryTrans paralleliz…

Transport properties of nuclear matter from anomalous fission yields
Karl-Heinz Schmidt, Christelle Schmitt, Andreas Heinz
https://arxiv.org/abs/2509.24590 https://

Transport properties of nuclear matter from anomalous fission yields
In nuclear fission, a heavy nucleus splits into two fragments, driven by the Coulomb repulsion between the positively charged protons. The fission process is governed by the potential energy and basic transport properties of nuclear matter like inertial mass and viscosity. While inertia induces features of memory, viscosity attenuates these features by damping. Exploring signatures of memory in fission is crucial for overcoming the current severe lack of experimental information on the transpor…

Orbits and attainable Hamiltonian diffeomorphisms of mechanical Liouville equations
Bettina Kazandjian, Eugenio Pozzoli, Mario Sigalotti
https://arxiv.org/abs/2509.24960 https:/…

Orbits and attainable Hamiltonian diffeomorphisms of mechanical Liouville equations
We study the approximate controllability problem for Liouville transport equations along a mechanical Hamiltonian vector field. Such PDEs evolve inside the orbit $$\mathcal{O}(ρ_0):=\left\{ρ_0\circ Φ\mid Φ\in {\rm DHam}(T^*M)\right\},\quad ρ_0\in L^r(T^*M,\R), \quad r\in[1,\infty),$$ where $ρ_0$ is the initial density and ${\rm DHam}(T^*M)$ is the group of Hamiltonian diffeomorphisms of the cotangent bundle manifold $T^*M$. The approximately reachable densities from $ρ_0$ are thus contai…

Hund's physics extends to actinide f electron systems
Byungkyun Kang, Roy N. Herrera-Navarro, Stephen S. Micklo, Mark R. Pederson, Eunja Kim
https://arxiv.org/abs/2509.23033

Hund's physics extends to actinide f electron systems
Uranium 5f electrons often yield heavy-fermion behavior via Kondo screening. However, the pronounced bad-metallic transport of uranium mononitride (UN) defies an incoherent Kondo explanation. Using density-functional theory combined with dynamical mean-field theory, we show that UN is a strongly correlated bad metal. The dominant correlations arise from intra-atomic Hund's exchange interaction between two 5f electrons, which aligns local magnetic moments and produces large quasiparticle mass re…

Magnetotransport in a 2D Hybrid Band System: Dirac and Heavy Hole Interplay
G. M. Gusev, A. D. Levin, V. A. Chitta, Z. D. Kvon, N. N. Mikhailov
https://arxiv.org/abs/2509.22960 …

Magnetotransport in a 2D Hybrid Band System: Dirac and Heavy Hole Interplay
We investigate magnetoresistivity and the Hall effect in a 6.3 nm gapless HgTe quantum well - a two-dimensional hybrid band system featuring coexisting linear (Dirac-like) and parabolic hole energy bands at low energies. Using a classical two-subband model that incorporates intervalley scattering, we reveal a striking tenfold enhancement of the Hall resistance, primarily driven by the dominant transport contribution of Dirac holes. A comprehensive magnetotransport analysis enables us to extract…

"The Bus Services (No. 2) Bill became law on Monday night (27th October), enabling local transport authorities to implement franchising schemes for bus services in England – potentially reversing the decades-old deregulation of buses which opponents say has contributed to spiralling prices and worsening, reduced services while transport firms pay millions to shareholders."
#BetterBuses

london_transport: London Transport Network
Multiplex network with 3 edge types representing links within the three layers of London train stations: Underground, Overground and DLR.
This network has 369 nodes and 441 edges.
Tags: Transportation, Public Transport, Multilayer, Weighted
https://networks.skew…

Crosslisted article(s) found for q-fin.PM. https://arxiv.org/list/q-fin.PM/new
[1/1]:
- Conditional Risk Minimization with Side Information: A Tractable, Universal Optimal Transport Fra...
Xinqiao Xie, Jonathan Yu-Meng Li

A Spectral-Grassmann Wasserstein metric for operator representations of dynamical systems
Thibaut Germain, R\'emi Flamary, Vladimir R. Kostic, Karim Lounici
https://arxiv.org/abs/2509.24920

A Spectral-Grassmann Wasserstein metric for operator representations of dynamical systems
The geometry of dynamical systems estimated from trajectory data is a major challenge for machine learning applications. Koopman and transfer operators provide a linear representation of nonlinear dynamics through their spectral decomposition, offering a natural framework for comparison. We propose a novel approach representing each system as a distribution of its joint operator eigenvalues and spectral projectors and defining a metric between systems leveraging optimal transport. The proposed …

FESTIM v2.0: Upgraded framework for multi-species hydrogen transport and enhanced performance
James Dark, R\'emi Delaporte-Mathurin, J{\o}rgen S. Dokken Huihua Yang, Chirag Khurana, Kaelyn Dunnell, Gabriele Ferrero, Vladimir Kulagin, Samuele Meschini
https://arxiv.org/abs/2509.24760

FESTIM v2.0: Upgraded framework for multi-species hydrogen transport and enhanced performance
FESTIM is an open-source finite element framework for modelling the transport of hydrogen isotopes in materials. It provides a flexible and extensible tool for simulating diffusion, trapping, surface interactions, and other processes that govern hydrogen behaviour. This paper presents FESTIM v2.0, a major release that broadens both the physical scope and the software infrastructure of the framework. On the physics side, the formulation adopts a modular structure that supports multi-species tran…

It’s hard to articulate just how quickly batteries for grid storage are coming online.
These massive arrays of cells can soak up electricity when sources like solar are available and prices are low,
and then discharge power back to the grid when it’s needed most.
Back in 2015, the battery storage industry had installed only a fraction of a gigawatt-hour of battery storage capacity across the US.
That year, it set a seemingly bold target of adding 35 gigawatt-hours by …

Lithium-Ion Battery Pack Prices Fall to $108 Per Kilowatt-Hour, Despite Rising Metal Prices: BloombergNEF | BloombergNEF
BloombergNEF’s new framework and scorecard provides a tool for investors to analyze country-level climate risk and resilience.

Qargo, which offers a cloud-based transport management service for carriers, freight forwarders, and third-party logistics, raised a $33M Series B led by Sofina (Tamara Djurickovic/Tech.eu)
https://tech.eu/2025/12/11/qargo-expands-ai-driven-transpor…

Qargo expands AI-driven transport management with $33M Series B
Qargo, an intelligent transport management system (TMS), has raised $33 million in a Series B funding round led by Sofina, with participation from existing investor Balderton Capital. The round follows Qargo’s rapid expansion across key European logistics hubs over the last 18 months. This latest investment brings Qargo’s total funding to $54 million.Founded in 2020, Qargo is a cloud-based transport management platform designed for carriers, freight forwarders, and 3PLs. It helps log…

Diffusion wake: a distinctive consequence of the Mach-cone wake induced by supersonic jets in high-energy heavy-ion collisions
Zhong Yang, Xin-Nian Wang
https://arxiv.org/abs/2509.23780

Diffusion wake: a distinctive consequence of the Mach-cone wake induced by supersonic jets in high-energy heavy-ion collisions
In this Research Perspective, we briefly review the diffusion wake, a distinctive consequence of the Mach-cone wake induced by the supersonic jets in ultra-relativistic heavy-ion collisions. The diffusion wake depletes soft hadrons in the direction opposite to the propagating jet. According to coupled transport and hydrodynamic simulations, a valley in the 2-dimensional jet-hadron correlation in azimuthal angle and rapidity arises on the top of the multiple parton interaction ridge as an unambi…

eine Leder-Patronentasche der britischen Marke Purdey, zum sicheren Transport von Patronen während der Jagd.

You might have had a shit day, but you probably didn't fall into a nuclear reactor cavity pool!
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/…

Advancing three dimensional modeling of adsorption physics in porous media for gas separation towards a new design of fixed bed adsorbers
Mohamad Najib Nadamani, Mostafa Safdari Shadloo, Talib Dbouk
https://arxiv.org/abs/2509.25062

Advancing three dimensional modeling of adsorption physics in porous media for gas separation towards a new design of fixed bed adsorbers
A new three-dimensional (3D) multiphase computational fluid dynamics (CFD) model for adsorption physics in porous media is developed and validated. The model is constituted at a macroscopic scale that integrates new volumetric source terms in the multi-species gas transport and energy conservation equations. These new terms, for the first time, take into account the impact of pores adsorption occupation rate (PAOR), or gas loading. Transient 3D simulations are performed at an atmospheric pressu…

Selective nonthermal melting in phlogopite under ultrafast energy deposition
Nikita Medvedev
https://arxiv.org/abs/2509.23211 https://arxiv.org/pdf/2509.23…

Selective nonthermal melting in phlogopite under ultrafast energy deposition
Phlogopite is a complex magnesium-rich mineral from the dark mica group, KMg$_3$(AlSi$_3$O$_{10}$)(OH)$_2$. Its response to ultrafast excitation of its electronic system is studied using a hybrid model that combines tight-binding molecular dynamics with transport Monte Carlo and the Boltzmann equation. Simulations predict that at the deposited dose of ~0.17 eV/atom (electronic temperature $T_e$~11,000 K), the first hydrogens start to migrate in the otherwise preserved lattice, transiently turni…

Here's a radical transport idea...
For every two lane road, turn one lane into a segregated two lane cycle route, and make the other one a contraflow motor vehicle lane.
Watch many car drivers switch to cycling, and RTAs drop. Short distance travel times will be reduced for many.
And I say all this as both a car driver and a cycle rider.
#Transport #Cars #Bikes

Lignes L : adaptation de l’offre de transport. Pendant les vacances scolaires du 25/12/2025 au 01/01/2026, l’offre de transport est adaptée sur votre ligne : certains trains ne circuleront pas. Pour préparer votre trajet et avant de vous rendre en gare, vérifiez vos horaires sur l’appli Ile-de-France Mobilités, le site Transilien.com, SNCF Connect ou votre appli de mobilité.
🤖 25/12 03:00

Spain to launch €60 monthly nationwide public transport pass | Spain | The Guardian
https://www.theguardian.com/world/2025/dec/15/spain-to-launch-60-monthly-nationwide-public-transport-pass
> Bus and train initiati…

"How sewage can be used to heat and cool buildings"
#Sewage #Heating #Energy

Buildings turn sewer pipes into heating and cooling solution
Wastewater flushed down the drain can be used to heat and cool homes and buildings in a sustainable way and climate experts say it's an untapped source of energy due to its stable temperature of approximately 70°F. Pipes that transport sewage are already built, making it a low-cost, widely available resource, reducing the need for heating and cooling from polluting energy sources. The wastewater doesn't come into contact with the building’s water supply and there's no smell. The U.S. Departm…

Two suspected Scattered Spider hackers plead not guilty over Transport for London cyberattack https://therecord.media/transport-for-london-hack-scattered-spider-suspects-plead-not-guilty

In the Netherlands, we have the OV-fiets system, seamlessly connecting bike rental to train travel. On small stations, there's a bike rental 'vending machine'. Scan your public transport card, and it offers you a bike. On returning the bike, the machine asks if it was in good condition. Brilliant!

Nearly 47 million Americans live near hidden fossil fuel sites #America

Nearly 47 million Americans live near hidden fossil fuel sites
A nationwide analysis has uncovered how sprawling fossil fuel infrastructure sits surprisingly close to millions of American homes. The research shows that 46.6 million people live within about a mile of wells, refineries, pipelines, storage sites, or transport facilities. Many of these locations release pollutants that may affect nearby communities, yet mid-supply-chain sites have rarely been studied. The findings reveal major gaps in understanding how this hidden network affects health.

Last week, I had the honour of presenting my work on smart charging and V2G to the IEA's Transport Project Partnership.
https://www.iea.org/news/the-iea-convenes-transport-project-partnership-to-examine-the-topics…

The IEA convenes Transport Project Partnership to examine the topics shaping the transport sector - News - IEA
The IEA convenes Transport Project Partnership to examine the topics shaping the transport sector - News from the International Energy Agency

Sweden detains sanctioned Russian vessel linked to weapons transport: https://benborges.xyz/2025/12/21/sweden-detains-sanctioned-russian-vessel.html

Well that's good to know! https://www.ianvisits.co.uk/articles/tfl-confirms-there-are-no-extra-terrestrials-on-the-london-underground-just-humans-behaving-badly-86182/

TfL confirms there are no extra-terrestrials on the London Underground – just humans behaving badly
Despite its Quatermass-linked fame, Transport for London (TfL) has officially confirmed that there have been no recorded sightings of aliens or extra-terrestrials on London’s transport network.

:youtube: WHAT'S GOOD INTERNET!!
There's been lots of discourse lately about how it is between Mexico and Spain so Im zippin' this whiteboy homie of mine ~he got a mexican last name he got that blood in him~ ACROSS the atlantic seafloor in Elon Musk's BRAND FREAKIN' NEW HYPERTUBE, a undersea -pneumatic- tube transport! THANK YOU FOR THE BETA ELON!! anyway,, we gonna see how he does with spain!
*camera pans to Nick Fuentes, mouth duct-taped shut, arms str…

Direct numerical simulation of two-phase flows with surfactant-induced surface viscous effects
Debashis Panda, Seungwon Shin, Abdullah M. Abdal, Lyes Kahouadji, Jalel Chergui, Damir Juric, Omar K. Matar
https://arxiv.org/abs/2509.24722

Direct numerical simulation of two-phase flows with surfactant-induced surface viscous effects
Direct numerical simulations of interfacial flows with surfactant-induced complexities involving surface viscous stresses are performed within the framework of the Level Contour Reconstruction Method (LCRM); this hybrid front-tracking/level-set approach leverages the advantages of both methods. In addition to interface-confined surfactant transport that results in surface diffusion and Marangoni stresses, the interface, endowed with shear and dilatational viscosities; these act to resist deform…

«Pour une même demande, une livraison rapide augmente incontestablement les émissions de 10 Š 12 %» (Sreedevi Rajagopalan, chercheuse au Centre pour le transport et la logistique du MIT).
https://www.ledevoir.com/actualites/environn…

So weit ich es verstehe, entsteht beim Verbrennen von Holz CO2. Inklusive Forstubg, Rodung und Transport ist das doch sicher eine negative Bilanz für das Klima. Ist dann die Einstufung des Umweltbundesamtes wirklich so überraschend und fehl am Platze?
Holzenergie laut UBA nicht klimaneutral – Branchenverband fassungslos | top agrar

Holzenergie laut UBA nicht klimaneutral – Branchenverband fassungslos
Das Umweltbundesamt spricht der Holzenergie-Nutzung die Nachhaltigkeit und Klimaneutralität ab. Der Fachverband Holzenergie ist alarmiert und auf 180.

#Santiago de Chile zeigt, wie eine konsequente #Elektrifizierung des öffentlichen #Nahverkehr​s gelingen kann.
Dank klarer politischer Vorgaben, stabiler Rahmenbedingungen und innovat…

What Europe can learn from Chile’s rapid shift to electric public transport - electrive.com
Santiago de Chile has emerged as the world’s third-largest operator of electric buses after Beijing and Shenzhen, with 3,059 units running in Santiago as of

Le trafic est fortement ralenti entre Montereau et Melun via Héricy. Prévoir des allongements de temps de trajet allant jusqu'Š 30 minutes, ainsi que des modifications du plan de transport (dont suppressions).
Motif : panne d'alimentation électrique.
🤖 26/11 10:44

🚨Job Alert !🚨 Postdoc Arizona State: characterization of #planetary surfaces and materials, numerical modeling of surface #geomorphology and evolution, modeling of ice stability and transport, icy terrains in the solar system 🧪⚒️

https://www.electrive.com/2025/10/08/netherlands-zero-emission-zones-lead-to-boom-in-electric-vans-and-trucks/

Netherlands: Zero-emission zones lead to boom in electric vans and trucks - electrive.com
A new analysis by Clean Cities examines the initial impact of the introduction of zero-emission zones for freight transport (ZEZ-F) in Dutch cities. One

Fast and length-independnt transport time supported by topological edge states in finite-size Su-Schieffer-Heeger chains
Yu-Han Chang, Nadia Daniela Rivera Torres, Santiago Figueroa Manrique, Raul A. Robles Robles, Vanna Chrismas Silalahi, Cen-Shawn Wu, Gang Wang, Giulia Marcucci, Laura Pilozzi, Claudio Conti, Ray-Kuang Lee, Watson Kuo
https://arxiv.org/abs/2511.19237 https://arxiv.org/pdf/2511.19237 https://arxiv.org/html/2511.19237
arXiv:2511.19237v1 Announce Type: new
Abstract: In order to transport information with topological protection, we explore experimentally the fast transport time using edge states in one-dimensional Su-Schrieffer-Heeger (SSH) chains. The transport time is investigated in both one- and two-dimensional models with topological non-trivial band structures. The fast transport is inherited with the wavefunction localization, giving a stronger effective coupling strength between the mode and the measurement leads. Also the transport time in one-dimension is independent of the system size. To verify the asertion, we implement a chain of split-ring resonators and their complementary ones with controllable hopping strengths. By performing the measurements on the group delay of non-trivially topological edge states with pulse excitations, the transport time between two edge states is directly observed with the chain length up to $20$. Along the route to harness topology to protect optical information, our experimental demonstrations provide a crucial guideline for utilizing photonic topological devices.
toXiv_bot_toot

One thing I enjoy doing in public transport is riding standing without holding on to anything. It's what I imagine surfing must feel like.
This is absolutely no fun in Singapore, where the trains are so broad and so steady that all you need to do is just…stand.

If you’re sneezing and coughing in public transport and not wearing a mask, I’m deducting 14 thousand cool points

Can they be trusted to get/do anything right?
The SSL certificate of Transport Canberra's real-time feeds is currently expired. This has resulted in an outage of the MyWay real-time data feed, impacting the availability of real-time data across Transport Canberra bus and light rail services.
#TransportCanberra

PSA about food labeling in the US
We have a gluten detection service dog because many things that should be gluten free/say they’re gluten free are not actually gluten free.
Stuff gets contaminated when growing (e.g. next to wheat field), by shared equipment, in factories, from packaging, during transport and in-store.
Every US consumer should know:
1. The list of ingredients on food isn't exhaustive
2. Allergen labeling:
a) limited to just some allergens
b) manufacturers don't actually have to test
c) "certified" foods are tested—but not continuously
d) testing only works with enough contamination
Some certifications may require batch-testing, but usually they don't.
A "certified gluten free" product may e.g. contain oats which sometimes are contaminated with gluten—but as not every batch is tested it's impossible to know unless you test yourself (hence the service dog).
Even if the product is properly batch-tested, you might get a part of the product that has the allergen in it, whereas the tested part didn't.
Or the threshold was too low (our dog can detect gluten better than any available lab testing equipment; yes, dogs are amazing).
Food products also contain ingredients that do not have to be included on the label when they're "incidental" (included in an another ingredient) or if they're considered part of the manufacturing process but not of the final product (e.g. various coatings on factory equipment).
Don't need to list flavors or specific spices either. ¯\_(ツ)_/¯
As for allergens, only those responsible for ~90% of food allergies* have to be specifically declared, and they're not tested for as it's simply based on the ingredients list.
Good luck if you have other allergies.
*milk, egg, egg, fish, Crustacean shellfish, tree nuts, wheat, peanuts, soybeans

while you are at Dublin mayors, maybe you could ask car drivers to turn on their lights as required by law in Ireland :-) ?!?! During my super brief time in Dublin in 2024 I saw a lot of cars with their lights off during a dark rainy afternoon.
https://mastodon.ie/@irishcycle/115583918846…

A lot of journalistic pieces contain too little information. But here's one that is chock full of interesting stuff, not details, but hooks for deeper inquiry. That stuff goes far beyond the topics in the headline. For instance I had never previously considered subway cars as a potential form of spyware.
"After F-35 “Kill Switch”, Now Europe Perturbed By Chinese “Kill Switch” That Could Cripple Its Transport Infra'

After F-35 “Kill Switch”, Now Europe Perturbed By Chinese “Kill Switch” That Could Cripple Its Transport Infra
The debate about a “kill switch” in Lockheed Martin’s F-35 Lightning II stealth fighter jets was hardly over when a new worry is pestering Europe. Do Chinese electric buses plying across multiple cities in Europe come with a similar “kill switch” that allows Beijing to deactivate them remotely? In the last month, multiple European countries, […]

‘The car belongs in Berlin’: city backpedaling on bike-friendly policies, critics say
https://www.theguardian.com/world/2025/nov/13/berlin-bicycle-and-pedestrian-car-friendly-transport?CMP=share_btn_url

De volgende klap voor de Europese autofabrikanten en hun voorliefde voor diesel, LNG en waterstof...
China's shift to #ElectricTrucks may reshape global fuel demand (diesel and LNG): "While electric trucks are two to three times more expensive than diesel ones and cost roughly 18% more than LNG trucks, their higher energy efficiency and lower costs can save owners an esti…

China's shift to electric trucks may reshape global fuel demand
China is rapidly replacing its aging diesel trucks with electric models, signaling a major shift in the world’s largest vehicle market. Sales of electric trucks jumped 175% in the first half of 2025, with battery-electric vehicles now making up more than a fifth of the market. Electric trucks are now cheaper to buy and operate than diesel ones. Forecasts suggest heavy-duty electrics could account for half of new sales by 2028. Analysts estimate that the transition is displacing a substantial …

👍 Montreal's electric buses use more energy in winter but are still more cost-effective than diesel
https://techxplore.com/news/2025-11-montreal-electric-buses-energy-winter.html

Montreal's electric buses use more energy in winter but are still more cost-effective than diesel
The Société de transport de Montréal (STM), the city's urban transit authority, plans to make its network completely electric by 2040 by adding 140 electric buses to its fleet annually to meet this target. It's an ambitious goal, made more challenging by the extreme swings in the city's weather every year.

This is the reason why more people in The Netherlands are going by car instead of public transit.
I can literally go to my gf by car that lives 40km away for the same amount as public transport from the city here to the station at home (about 10km or so).

london_transport: London Transport Network
Multiplex network with 3 edge types representing links within the three layers of London train stations: Underground, Overground and DLR.
This network has 369 nodes and 441 edges.
Tags: Transportation, Public Transport, Multilayer, Weighted
https://networks.skew…

Why, how do you transport yours?
#caturday

Ich will mich ja nicht beschweren, #AirportZurich, aber grad wirklich Weltklasse ist weder das Abfluggate, noch der Transport zum Flieger. Dem Gerät selbst merkt man das Alter auch gut an. 🤨
#CANEast25
Für die Spotter:

LX86 (SWR86) Swiss Flight Tracking and History 21-Oct-2025 (ZRH / LSZH-CYUL) - FlightAware
Flight status, tracking, and historical data for Swiss 86 (LX86/SWR86) 21-Oct-2025 (ZRH / LSZH-CYUL) including scheduled, estimated, and actual departure and arrival times.

Pendant les vacances scolaires du 22/12 au 02/01, l’offre de transport est adaptée sur votre ligne : certains trains ne circuleront pas. Pour préparer votre trajet et avant de vous rendre en gare, vérifiez vos horaires sur l’appli Ile-de-France Mobilités, le site Transilien.com, SNCF Connect ou votre appli de mobilité.
🤖 22/12 03:00

from my link log —
The maturing of QUIC.
https://www.fastly.com/blog/maturing-of-quic
saved 2019-11-14 https://dotat.at/:/CW74X.htm…

The Maturing of QUIC | Fastly
QUIC, the new internet transport protocol set to replace TCP, was comprehensively built by tech industry leaders over nearly seven years. Go behind the scenes to see how QUIC evolved from a lofty experiment to a standard set to modernize the internet.

Have been on this bus an hour since leaving Manchester airport. It's still in Manchester. It's supposed to be an *express* bus to Leeds. According to the timetable it's faster (and certainly cheaper) than the train.
Beginning to have some serious doubts about public transport in UK.
Regretting my choices.

Being too dependent on China has great risks. "Oslo tests reveal Chinese electric buses can be switched off remotely"
https://www.aa.com.tr/en/europe/oslo-tests-reveal-chinese-electric-buses-can-be-switched-off-remotely/3…

Oslo tests reveal Chinese electric buses can be switched off remotely
Public transport operator Ruter says manufacturer access allows buses to be stopped from China, prompting Norway to review cybersecurity risks in public transport - Anadolu Ajansı

I've just bought test materials to evaluate the relative strengths of a flax/balsa sandwich composite versus a carbon/Nomex (aramid) sandwich composite.
Yes, I know the carbon/Nomex will be stronger, but would the flax/balsa be strong enough for my #Tricycle project?
#BikeTooter

An Asynchronous Many-Task Algorithm for Unstructured $S_{N}$ Transport on Shared Memory Systems
Alex Elwood, Tom Deakin, Justin Lovegrove, Chris Nelson
https://arxiv.org/abs/2510.11513

An Asynchronous Many-Task Algorithm for Unstructured $S_{N}$ Transport on Shared Memory Systems
Discrete ordinates $S_N$ transport solvers on unstructured meshes pose a challenge to scale due to complex data dependencies, memory access patterns and a high-dimensional domain. In this paper, we review the performance bottlenecks within the shared memory parallelization scheme of an existing transport solver on modern many-core architectures with high core counts. With this analysis, we then survey the performance of this solver across a variety of compute hardware. We then present a new Asy…

China's transport, logistics, and ride-hailing sectors are accelerating the mass adoption of autonomous vehicles, threatening the jobs of millions of drivers (Edward White/Financial Times)
https://on.ft.com/3JNclHY

Approximately 850 electric buses operating in Norway can be fully controlled from China, according to a secret test conducted by the public transport authority.
https://www.focus.de/panorama/welt/norwege

DIPLODOCUS II: Implementation of transport equations and test cases relevant to micro-scale physics of jetted astrophysical sources
Christopher N. Everett, Marc Klinger-Plaisier, Garret Cotter
https://arxiv.org/abs/2510.12505

DIPLODOCUS II: Implementation of transport equations and test cases relevant to micro-scale physics of jetted astrophysical sources
DIPLODOCUS (Distribution-In-PLateaux methODOlogy for the CompUtation of transport equationS) is a novel framework being developed for the general transport of particle distribution functions through the seven dimensions of phase space, including forcing terms and interactions between particles. Following Paper I, which details the background analytic framework, this second paper provides an overview of the numerical implementation in the form of the code package Diplodocus.jl, written in Julia,…

While tap-and-go travel is great trying to resolve an unwanted charge from another countries public transport system because RFID trumps the PDF you are trying to scan is a bit painful.

"Eine Workstation-Grafikkarte im Wert von 10.000 Dollar ist nach einem #Transportschaden funktionsunfähig und nicht zu retten."
Hahahahaaa, #Kapitalismus und #Wegwerfgesellschaft

Nvidia bietet keine Ersatzteile: 10.000-Dollar-Grafikkarte nach Transport irreparabel - Golem.de
Trotz modularen Aufbaus ist eine beschädigte RTX Pro 6000 nicht reparierbar und damit wertlos - Nvidia bietet kein Ersatzteil an.

A record 3million people to fly from UK this holiday.
Also, heading for the hottest year since records began.
No connection.
Millions hit UK roads, railways and airports for Christmas Eve getaway | Transport | The Guardian
#EcocidalMadness

Le 24/12/2025, l’offre de transport est adaptée sur votre ligne L.
Pour préparer votre trajet et avant de vous rendre en gare, vérifiez vos horaires sur l’appli Ile-de-France Mobilités, le site Transilien.com, SNCF Connect ou votre appli de mobilité.
Motif : difficultés liées Š un manque de personnel
🤖 24/12 03:00

Optimal transport paths with capacity induced cost function
Qinglan Xia, Haotian Sun
https://arxiv.org/abs/2510.10557 https://arxiv.org/pdf/2510.10557

Optimal transport paths with capacity induced cost function
This article generalizes the study of ramified optimal transport with capacity constraint in transport multi-paths by generalizing the $\mathbf{M}_α$ cost to $\mathbf{M}_{α,c}$, which incorporates capacity constraints into the cost function. Equipped with $\mathbf{M}_{α,c}$ cost, we prove the existence of optimal transport path, $\mathbf{M}_{α,c}$ related inequalities, decomposition of any general transport paths, and occurrence of direct line segments in an optimal transport path.

"Traffic Light Climate Impact Has Easy Fix to Cut Emissions 22%"
#Cars #Vehicles #Emissions

Traffic Light Climate Impact Has Easy Fix to Cut Emissions 22% | Happy Eco News
Research shows traffic light climate impact accounts for 15% of U.S. transport emissions. MIT’s eco-driving simulations suggest smartphone-guided traffic smoothing could cut emissions 11–22%. The approach adapts to adoption levels and complements EVs and hybrids, offering a fast, scalable solution for cleaner mobility at intersections nationwide.

A total of 90 additional EV charging hubs are set to be built across Ireland thanks to €9.9 million of public funding, which will improve public charging coverage.
https://www.gov.ie/en/department-of-transport/press-relea…

london_transport: London Transport Network
Multiplex network with 3 edge types representing links within the three layers of London train stations: Underground, Overground and DLR.
This network has 369 nodes and 441 edges.
Tags: Transportation, Public Transport, Multilayer, Weighted
https://networks.skew…

I grew up in a large city in a western democracy, with a socialist city government and it was fine.
There was basically no crime. People didn’t go hungry. Housing was affordable. Rent was regulated. Public transport was amazing. Education was free. Everyone had healthcare. Taxes were practically the same as in the US.
It was also much, much easier to start a business there than in the US. (Literally took an hour!)
People who wanted to get rich still could do it (there’s a few Austrian billionaires even).
I don’t understand how Americans got themselves so brainwashed that “socialism” is used as a term that sort of means “iworse than death”.
¯\_(ツ)_/¯

Want a used car that works?
You’d be wise to not get an older Tesla.
In Consumer Reports’ latest ranking for used cars,
the Elon Musk-run automaker came dead last in terms of reliability,
trailing by over forty points from the top spot on a scale between 0 and 100
https://futurism.co…

Old Teslas Are Falling Apart
On Consumer Reports' latest ranking of used car reliability, Tesla came in dead last with a rating not even half of the top placed brand.

Heute vor 3 Jahren: Am 22. Dezember 2022 beschließt die Regierung in Tokio, 11 Jahre nach der #Atomkatastrophe in #Fukushima, den Ausstieg vom AKW-Ausstieg. Alte Mailer sollen länger am Netz bleiben, neue Reaktoren gebaut werden.

China’s CO2 emissions have now been flat or falling for 18 months.
The rapid adoption of electric vehicles (EVs) saw CO2 emissions from transport fuel drop by 5% year-on-year, while there were also declines from cement and steel production.
While emissions from the power sector were flat year-on-year, a big rise in the chemical industry’s CO2 output offset reductions elsewhere.

Analysis: China’s CO2 emissions have now been flat or falling for 18 months - Carbon Brief
China’s carbon dioxide (CO2) emissions were unchanged from a year earlier in the third quarter of 2025, extending a flat or falling trend that started in March 2024.

The probe limit in MHD and its implications for magnetic transport
Giorgio Frangi, Matej Bajec, Guri K. Buza, Alexander Soloviev, Sa\v{s}o Grozdanov
https://arxiv.org/abs/2510.12352

The probe limit in MHD and its implications for magnetic transport
Many phenomenological and effective field-theoretical (EFT) applications of magnetohydrodynamics (MHD) in the presence of a background magnetic field employ a simplifying assumption whereby the electromagnetic and the energy-momentum fluctuations decouple. In studies of magnetic transport, for example in magnetic diffusion, the conservation of energy and momentum is then neglected. In this paper, we investigate the details and the consistency of this so-called $\textit{probe limit}$ in differen…

Simplifying Optimal Transport through Schatten-$p$ Regularization
Tyler Maunu
https://arxiv.org/abs/2510.11910 https://arxiv.org/pdf/2510.11910

Simplifying Optimal Transport through Schatten-$p$ Regularization
We propose a new general framework for recovering low-rank structure in optimal transport using Schatten-$p$ norm regularization. Our approach extends existing methods that promote sparse and interpretable transport maps or plans, while providing a unified and principled family of convex programs that encourage low-dimensional structure. The convexity of our formulation enables direct theoretical analysis: we derive optimality conditions and prove recovery guarantees for low-rank couplings and …

Germany approves legislation granting Interior Ministry new powers to ban Chinese tech suppliers from critical infrastructure sectors like energy and transport (Sam Clark/Politico)
https://www.politico.eu/article/germany-lines-up-new-powers-to-fend-off-c…

Germany lines up new powers to fend off Chinese tech
New law set to come into place as Germany toughens its stance on China.

A new round of EU transport infrastructure funding has been allocated. I have compiled an overview of the recipients for #EV charging infrastructure. Rotterdam 🇳🇱 leads.
Most 🔌 funded: Rotterdam-based VARO Energy 🇳🇱🇩🇪 for 548 🚛 chargers
Biggest site funded: Watthub's Maasvlakte hub (Port of Rotterdam): 50 🔌 350 kW⚡🚛

london_transport: London Transport Network
Multiplex network with 3 edge types representing links within the three layers of London train stations: Underground, Overground and DLR.
This network has 369 nodes and 441 edges.
Tags: Transportation, Public Transport, Multilayer, Weighted
https://networks.skew…

"Hundreds of staff working across Transport for London and the wider rail network could face deportation under recent changes to Skilled Worker visa rules."
RMT transport workers at No 10 demand end to deportation threat | Morning Star
https://morningstaronl…

After some time in preparation, and following an initial attempt to prioritise the allocation of network capacity, the Dutch NRA has now taken a (and this time: own) decision.
Priority for 'congestion softeners', safety, healthcare, housing etc.
https://www.officielebekendmakingen.nl/stc<…

People urged to wear masks when they are ill as UK faces ‘tidal wave’ of flu | Flu | The Guardian
https://www.theguardian.com/society/2025/dec/09/nhs-leader-calls-for-revival-of-mask-wearing-amid-tidal-wave-of-flu<…