Tootfinder

On the completeness of several fortification-interdiction games in the Polynomial Hierarchy
Alberto Boggio Tomasaz, Margarida Carvalho, Roberto Cordone, Pierre Hosteins
https://arxiv.org/abs/2406.01756

On the completeness of several fortification-interdiction games in the Polynomial Hierarchy
Fortification-interdiction games are tri-level adversarial games where two opponents act in succession to protect, disrupt and simply use an infrastructure for a specific purpose. Many such games have been formulated and tackled in the literature through specific algorithmic methods, however very few investigations exist on the completeness of such fortification problems in order to locate them rigorously in the polynomial hierarchy. We clarify the completeness status of several well-known fort…

Urgent challenges demand more action from scientists
Professor of Planetary Health Pim Martens introduced a new concept to the audience by describing himself as a Scientivist. Martens formulates that:
"Scientivists are scientists that are engaged in a systematic activity to acquire knowledge (the ‘science’ part), that aim to promote, impede, or direct societal change (the ‘activist’ part)”.
:mastodon:

Could a planetary health approach in sustainability science wake up the masses to act? | Helsinki Institute of Sustainability Science | University of Helsinki
Urban planning and policymakers must adapt to the growing understanding of how planetary health impacts human well-being. To achieve this, there is a need for resolute language in scientific communication to encourage immediate actions.

Designing a Photonic Physically Unclonable Function Having Resilience to Machine Learning Attacks
Elena R. Henderson, Jessie M. Henderson, Hiva Shahoei, William V. Oxford, Eric C. Larson, Duncan L. MacFarlane, Mitchell A. Thornton
https://arxiv.org/abs/2404.02440

Designing a Photonic Physically Unclonable Function Having Resilience to Machine Learning Attacks
Physically unclonable functions (PUFs) are designed to act as device 'fingerprints.' Given an input challenge, the PUF circuit should produce an unpredictable response for use in situations such as root-of-trust applications and other hardware-level cybersecurity applications. PUFs are typically subcircuits present within integrated circuits (ICs), and while conventional IC PUFs are well-understood, several implementations have proven vulnerable to malicious exploits, including those perpetrate…

I am going to be super busy all day, but this response from the Office of the Information Commissioner of Canada just came into my inbox. I argued Public Safety Canada (emergency communications) services were violating privacy laws using corporate social media. They say they don't have jurisdiction to make the call. Would be interested in your guys thoughts on a response before I have time to think on mine.

Well, obviously, backing Macron puts you on the terrorist list.
"He was held under section 7 of the Terrorism Act 2000, and questioned by counter-terrorist officers about whether he had taken part in anti-government demonstrations in France and if he backed the French president, Emmanuel Macron."

Great news, Canberra - Hannah has been located safe and well.
https://www.policenews.act.gov.au/news/media-releases/update-have-you-seen-hannah-mckay-found

UPDATE Have you seen Hannah McKay FOUND
Great news, Canberra - Hannah has been located safe and well. Thanks for all your assistance.

I’m pleased to announce a preliminary agreement between #Samsung and the Department of Commerce to bring Samsung’s
💥advanced semiconductor manufacturing 💥and research and development to #Texas.
This announcement, will unleash over $40 billion in investment from Samsung, and cement 🔸central Texas’s role as a st…

Statement from President Joe Biden on CHIPS and Science Act Preliminary Agreement with Samsung | The White House
I signed the CHIPS and Science Act to restore U.S. leadership in semiconductor manufacturing and ensure America’s consumers, businesses, and military maintain access to the chips that underpin our modern technology. But well before the law was passed, I was working to address our supply chain vulnerabilities. This included my trip to the Republic of Korea…

Good Morning #Canada
On 14 March 1793, Adam Vrooman violently bound Chloe Cooley, a Black woman he enslaved and transported her across the Niagara River to sell her in New York State. Lieutenant-Governor Simcoe used the incident to introduce legislation to abolish slavery in Upper Canada. Well, the new laws limited slavery and although Canada was the 1st colony to take action, it was another 40…

1793 Act to Limit Slavery in Upper Canada
The 1793 Act to Limit Slavery in Upper Canada was the first legislation in the British colonies to restrict the slave trade. The Act recognized enslavement as a...

MyData.org is calling on the European Commission to enforce the "continuous and real-time [data] access" provision in the Digital Markets Act against Alphabet, Amazon, Apple, ByteDance, Meta and Microsoft.T
hat provision is now apparently the law, but hasn't been implemented. Well, at least I have not seen it implemented by any of them, anybody know more? Because implementing that provision could be truly revolutionary!

Calling on the European Commission to Enforce Data Portability

I’m pleased to announce a preliminary agreement between #Samsung and the Department of Commerce to bring Samsung’s
💥advanced semiconductor manufacturing 💥and research and development to #Texas.
This announcement, will unleash over $40 billion in investment from Samsung, and cement 🔸central Texas’s role as a st…

Statement from President Joe Biden on CHIPS and Science Act Preliminary Agreement with Samsung | The White House
I signed the CHIPS and Science Act to restore U.S. leadership in semiconductor manufacturing and ensure America’s consumers, businesses, and military maintain access to the chips that underpin our modern technology. But well before the law was passed, I was working to address our supply chain vulnerabilities. This included my trip to the Republic of Korea…

Just tested, and the Vision Pro Developer Strap also doesn’t allow use of USB-C headphones. Probably can't act as a USB host at all. But I'm going on a flight soon and I don't have any Bluetooth headphones… Oh well.

V2X Enabled Emergency Vehicle Alert System
Nitish Kumar, Hershita Shukla, Prof. P. Rajalakhsmi
https://arxiv.org/abs/2403.19402 https://

V2X Enabled Emergency Vehicle Alert System
Today's major concern in traffic management systems includes time-efficient emergency transports. The awareness of environment and vehicle information is necessary for the emergency vehicles as well as the surrounding commercial vehicles that might be driven by inexperienced drivers to act accordingly if they both interact. The information exchange should be quick and accurate along with how much interactive the alerting system is with the drivers. Therefore, technologies like V2X-based alert s…

Quantum fields on projective geometries
Daniel Spitz
https://arxiv.org/abs/2403.17996 https://arxiv.org/pdf/2403.17996

Quantum fields on projective geometries
Considering homogeneous four-dimensional space-time geometries within real projective geometry provides a mathematically well-defined framework to discuss their deformations and limits without the appearance of coordinate singularities. On Lie algebra level the related conjugacy limits act isomorphically to concatenations of contractions. We axiomatically introduce projective quantum fields on homogeneous space-time geometries, based on correspondingly generalized unitary transformation behavio…

Today I submitted a complaint to the Information Commissioner of Canada arguing that by only using third party social media platforms (as opposed to open ones like Mastodon) Public Safety Canada was not living up to the spirit, if not the word, of the Access to Information Act.
You can read my letter and justifications on my blog.
h/t @…@…

#Found
Updated at 10.00am on Thursday, 9 May 2024 - Great news Canberra! The missing 13-year-old girl we posted about yesterday has been located safe and well. Thanks for your help.
https://ww…

UPDATE Have you seen Daniela Karadinovski? FOUND
Great news Canberra! The missing 13-year-old girl we posted about yesterday has been located safe and well. Thanks for your help.

This https://arxiv.org/abs/2403.12680 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Plasma motions and compressive wave energetics in the solar corona and solar wind from radio wave scattering observations
Radio signals propagating via the solar corona and solar wind are significantly affected by compressive waves, impacting properties of solar bursts as well as sources viewed through the turbulent solar atmosphere. While static fluctuations scatter radio waves elastically, moving, turbulent or oscillating density irregularities act to broaden the frequency of the scattered waves. Using a new anisotropic density fluctuation model from the kinetic scattering theory for solar radio bursts, we deduc…

Analysing the interaction of expansion decisions by end customers and grid development in the context of a municipal energy system
Paul Maximilian R\"ohrig, Nancy Radermacher, Luis B\"ottcher, Andreas Ulbig
https://arxiv.org/abs/2404.14371

Analysing the interaction of expansion decisions by end customers and grid development in the context of a municipal energy system
In order to achieve greenhouse gas neutrality by 2045, the Climate Protection Act sets emission reduction targets for the years 2030 and 2040, as well as decreasing annual emission volumes for some sectors, including the building sector. Measures to decarbonize the building sector include energy retrofits and the expansion of renewable, decentralized power generators and low-CO2 heat generators. These measures thus change both the load and the generation of the future energy supply concept. Con…

I’m sure Doctorow will say that if it couldn’t evolve it wasn’t much of a definition anyway.
From: @…
https://mastodon.social/@kegill/112078241…

Kathy E. Gill 🇺🇦 (@kegill@mastodon.social)
Attached: 1 image I understand that @pluralistic@mamot.fr coined ‘enshittification’ to describe how a digital platform devolves from being useful to people so it grows to, well, an abusive partner that treats its base and advertisers like 💩. https://www.versobooks.com/blogs/news/enshittification-the-2023-word-of-the-year Unfortunately, there are too many examples of how people/businesses co-opt internet protocols and then act like that abuser’s identical twin. Thus the meaning of…

We no longer have time to properly mourn before another shooting takes place. It was and is devastating.
But we owe it to the victims and their families, as well as our country, not to be desensitized and defeated.
As President Joe Biden said during his State of the Union address, the families torn apart by gun violence have a clear message for us all.
Over and over again, from Newtown to Parkland to Uvalde, they pled with elected officials to act.
When I meet wit…

To Act on Gun Violence, We Have To Drop Defeatism and Despair
Our constituents sent us to Congress to solve problems, not ignore them. It's time to listen to the people and take action.

This https://arxiv.org/abs/2311.18757 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Analytic Besov functional calculus for several commuting operators
This paper investigates when analytic Besov functions of $n$ variables act on the generators of $n$ commuting $C_0$-semigroups on a Banach space. The theory for $n=1$ has already been published, and the present paper uses a different approach to that case as well as extending to the cases when $n\ge2$. It also clarifies some spectral mapping properties and provides some operator norm estimates.

This https://arxiv.org/abs/2303.12345 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Impact of the Hubble tension on the $r$-$n_s$ contour
The injection of early dark energy (EDE) before the recombination, a possible resolution of the Hubble tension, will not only shift the scalar spectral index $n_s$ towards $n_s=1$, but also be likely to tighten the current upper limit on tensor-to-scalar ratio $r$. In this work, with the latest CMB datasets (Planck PR4, ACT, SPT and BICEP/Keck), as well as BAO and SN, we confirm this result, and discuss its implication on inflation. We also show that if we happen to live with EDE, how the diffe…

This https://arxiv.org/abs/2404.15664 has been replaced.
link: https://scholar.google.com/scholar?q=a

Exact Cluster Dynamics of Indirect Reciprocity in Complete Graphs
Heider's balance theory emphasizes cognitive consistency in assessing others, as is expressed by ``The enemy of my enemy is my friend.'' At the same time, the theory of indirect reciprocity provides us with a dynamical framework to study how to assess others based on their actions as well as how to act toward them based on the assessments. Well-known are the `leading eight' from L1 to L8, the eight norms for assessment and action to foster cooperation in social dilemmas while resisting the inva…

This https://arxiv.org/abs/2401.12258 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csMA_…

Emergent Dominance Hierarchies in Reinforcement Learning Agents
Modern Reinforcement Learning (RL) algorithms are able to outperform humans in a wide variety of tasks. Multi-agent reinforcement learning (MARL) settings present additional challenges, and successful cooperation in mixed-motive groups of agents depends on a delicate balancing act between individual and group objectives. Social conventions and norms, often inspired by human institutions, are used as tools for striking this balance. In this paper, we examine a fundamental, well-studied social …

Monotone Randomized Apportionment
Jos\'e Correa, Paul G\"olz, Ulrike Schmidt-Kraepelin, Jamie Tucker-Foltz, Victor Verdugo
https://arxiv.org/abs/2405.03687

Monotone Randomized Apportionment
Apportionment is the act of distributing the seats of a legislature among political parties (or states) in proportion to their vote shares (or populations). A famous impossibility by Balinski and Young (2001) shows that no apportionment method can be proportional up to one seat (quota) while also responding monotonically to changes in the votes (population monotonicity). Grimmett (2004) proposed to overcome this impossibility by randomizing the apportionment, which can achieve quota as well as …

This https://arxiv.org/abs/2403.17996 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Quantum fields on projective geometries
Considering homogeneous four-dimensional space-time geometries within real projective geometry provides a mathematically well-defined framework to discuss their deformations and limits without the appearance of coordinate singularities. On Lie algebra level the related conjugacy limits act isomorphically to concatenations of contractions. We axiomatically introduce projective quantum fields on homogeneous space-time geometries, based on correspondingly generalized unitary transformation behavio…

Plasma motions in the solar corona and solar wind to 1 au, as inferred from radio wave scattering observations
Francesco Azzollini, A. Gordon Emslie, Daniel L. Clarkson, Nicolina Chrysaphi, Eduard P. Kontar
https://arxiv.org/abs/2403.12680

Plasma motions in the solar corona and solar wind to 1 au, as inferred from radio wave scattering observations
Radio signals propagating via the solar corona and solar wind are significantly affected by compressive waves, impacting solar burst properties as well as sources viewed through the turbulent atmosphere. While static fluctuations scatter radio waves elastically, moving, turbulent or oscillating density irregularities act to broaden the frequency of the scattered waves. Using a new anisotropic density fluctuation model based on solar radio bursts, we deduce the plasma velocities required to expl…

This https://arxiv.org/abs/2307.03740 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Coupled Quintessence scalar field model in light of observational datasets
We do a detailed analysis of a well-theoretically motivated interacting dark energy scalar field model with a time-varying interaction term. Using current cosmological datasets from CMB, BAO, Type Ia Supernova, $H(z)$ measurements from cosmic chronometers, angular diameter measurements from Megamasers, growth measurements, and local SH0ES measurements, we found that dark energy component may act differently than a cosmological constant at early times. The observational data also does not disfav…