Tootfinder

from my link log —
Crossness pumping station: seduced by symmetry.
https://www.anthonybaines.co.uk/blog/2021/9/2/crossness-pumping-station-seduced-by-symmetry
saved 2025-05-15

Crossness Pumping Station: seduced by symmetry — Anthony Baines Photography
Last week, I was lucky enough to visit the Crossness Pumping Station in South-East London . It is variously known as the "Cathedral in the Marshes" or, more bluntly, the "Cathedral of Sewage". It is a former Victorian sewage pumping station, opened in 1865; it continued to ope

The proper way to do this for a blind student would surely be some kind of physical manipulatives, not verbal descriptions. The thing is, I don’t have any blind students currently, and if I did, we’d work on individual accommodation and assistance.
With this alt text, I’m just trying to get •something• in there to be at least minimally accessible: head start on those accommodation, something helpful if I ever share this online, etc. If there’s any way for text to convey the spatial relationships, that would be better than the text I have.

Teaching special relativity in elementary physics or upper high school courses
Maria Grazia Blumetti, Biagio Buonaura, Giuseppe Giuliani, Marco Litterio
https://arxiv.org/abs/2506.07872

Teaching special relativity in elementary physics or upper high school courses
This paper aims to provide teachers with a tool to teach the essential features of special relativity, considering the students' difficulties highlighted by numerous studies. Our proposal presents special relativity as the solution to the troubles of Newtonian dynamics, exemplified by the infinities of Newtonian uniformly accelerated motion. The paper's main section uses thought experiments with the exchange of flashes of light of null duration between two inertial reference frames to derive th…

Thanks for the thoughtful replies. Answers to questions:
Many people asked for the context. This is for college students using what they already know about the order of arithmetic operations to start analyzing the structure of code. In the activity, they visual code structures using these kind of diagrams. The important thing here is thus not just subtraction; it’s this way of visualizing the relationships — and there already is a sight-centeric word, “visualize!” But I suspect a blind reader could also use these spatial relationships as a learning tool…if there were a good way of conveying the spatial relationships.

Characterization based Goodness-of-Fit for Generalized Pareto Distribution: A Blend of Stein's Identity and Dynamic Survival Extropy
Gaurav Kandpal, Nitin Gupta
https://arxiv.org/abs/2506.01473

Characterization based Goodness-of-Fit for Generalized Pareto Distribution: A Blend of Stein's Identity and Dynamic Survival Extropy
This paper proposes a goodness of fit test for the generalized Pareto distribution (GPD). Firstly, we provide two characterizations of GPD based on Stein's identity and dynamic survival extropy. These characterizations are used to test GPD separately for the positive and negative shape parameter cases. A Monte Carlo simulation is conducted to provide the critical values and power of the proposed test against a good number of alternatives. Our test is simple to use and it has asymptotic normalit…

Coining "#malcompetence" to mean "actions & their outcomes which are consistent with incompetence but which have an overall malicious effect, especially when the incompetence manifests differently in different situations to produced de facto discrimination."
Malcompetence can run the gamut from actual intentional malice disguised to appear as incompetence, to subconsciously coordinated malicious incompetence that the perpetrator is not consciously aware of but which a less subconsciously biased person would not engage in, to truly unintentional incompetence which manifests in a pattern because of bias in oversight/attention/competence-building. These different root causes are often not distinguishable, and sometimes blend together.
<does a quick search>
Okay, so it looks like I'm not the only one to have coined this term, but I think digging into the different types is still useful.

Teaching Mathematics for Economists
Eric Hillebrand
https://arxiv.org/abs/2505.22671 https://arxiv.org/pdf/2505.22671

Teaching Mathematics for Economists
In this chapter, I discuss teaching mathematical tools specifically tailored for economics students. A typical one-semester course in this area seeks to blend a range of topics: from foundational elements of subjects such as linear algebra and multivariate calculus to intermediate areas like real and convex analysis and further into advanced topics such as dynamic optimization in both continuous and discrete time. This breadth of coverage corresponds to material usually spread across multiple y…

Estimands for Randomized Discontinuation Designs in Oncology
Ayon Mukherjee, Oleksandr Sverdlov, Ngoc-Thuy Ha, Yu Deng
https://arxiv.org/abs/2506.00556 htt…

Estimands for Randomized Discontinuation Designs in Oncology
Randomized discontinuation design (RDD) is an enrichment strategy commonly used to address limitations of traditional placebo-controlled trials, particularly the ethical concern of prolonged placebo exposure. RDD consists of two phases: an initial open-label phase in which all eligible patients receive the investigational medicinal product (IMP), followed by a double-blind phase in which responders are randomized to continue with the IMP or switch to placebo. This design tests whether the IMP p…