Tootfinder

Spatial Data Science Symposium 2025 is announced. Check it out, it's hybrid!
http://sdss2025.spatial-data-science.net/index.html

Spatial Data Science Symposium 2025
December 4-5 | Distributed & Online. The symposium aims to bring together researchers from both academia and industry to discuss experiences, insights, methodologies, and applications, taking spatial and temporal knowledge into account while addressing their domain-specific problems.

Die Folien zu meinem Vortrag "FAIR, really? Zur Nutzbarkeit von Kulturerbedaten" auf der #bibliocon2025 sind jetzt online: https://opus4.kobv.de/opus4-bib-info/f

"The Bib Record in the Age of Digital Reproduction" https://journal.radicallibrarianship.org/index.php/journal/article/view/135
"Taking both structural and thematic inspiration from Walter Benjamin’s “The Work of Art in the Age of Mechanic…

My first, and maybe most notable, contribution to Wikipedia was the creation of [IBM] Token Ring page in October 2001. Some remnants of the original text surprisingly survive to this day: https://en.wikipedia.org/w/index.php?title=IBM_Token_ring&oldid=351771239…

Sometimes {renv} just isnt enough to ensure your environment is controlled. Maybe {slushy} could be an option? https://gsk-biostatistics.github.io/slushy/index.html

Linkdump 35/2025 – #fundstücke

#FotoDerWoche mit meheren Jahrzehnten Schularchitektur und Wolken.
https://blog.till-westermayer.de/index.php/2025/06/29/photo-of-the-week-asg-with-…

Photo of the week: ASG with clouds
Vor der Haustür keine Wildnis mehr, dafür bietet sich der weite Blick über mehrere Varianten Schulzentrum (und am Tag dieses Fotos zudem wunderschöne Wolkenformationen). Das ASG ("Albert-Schweitzer-Gymnasium") wird saniert, deswegen sind die Klassen in Container ausgelagert, der ganz im Hintergrund

I have visited this small National Monument several times - it is very much worth a visit.
I fear that it, however, is near the top of FFOTUS' list of national monuments to dismantle.
Cesar Chavez National Monument
https://www.nps.gov/cech/index.htm

César E. Chávez National Monument (U.S. National Park Service)
Yes, we can!

Widely recognized as the most important Latino leader in the United States during the twentieth century, Cesar Chavez led farm workers and supporters in the establishment of the country's first permanent agricultural union. His leadership brought sustained international attention to the plight of U.S. farm workers, and secured for them higher wages and safer working conditions.

The Fordham University
Tri-State Tick Risk Index for the week of June 27, is at the highest it can be:
a 10 out of 10.
What’s listed next to that score is the following:
"If you’re thinking of taking a hike, consider going to a movie instead."
h…

Fordham Tri-State Tick Risk
The Fordham Tick Index is an estimate of the risk of being bitten by a nymphal or adult deer tick.

Hoy en Xixón, apoyando a las seis de La Suiza. Otro capítulo en el golpe de estado del “quien pueda hacer que haga”.
https://www.sindicatodeestudiantes.net/index.php/no…

Statistical Insights into Flux and Photon Index Distributions of VHE FSRQs from Fermi-LAT Observations
Zahoor Malik, Sikandar Akbar, Zahir Shah, Ranjeev Misra, Athar A. Dar, Aaqib Manzoor, Sajad Ahanger, Zeeshan Nazir, Naseer Iqbal, Seemin Rubab, Javaid Tantry
https://arxiv.org/abs/2505.23338

Statistical Insights into Flux and Photon Index Distributions of VHE FSRQs from Fermi-LAT Observations
This study examines the flux and photon index distributions of 11 Very High Energy (VHE) Flat Spectrum Radio Quasars (FSRQs) using over 16 years of Fermi-LAT $γ$-ray data. The distributions reveal double lognormal profiles in both flux and index, primarily in the 3-day and 7-day binnings, supporting the ``two-flux-state hypothesis" for blazars. These profiles, which become insignificant at 30-day binning, suggest that shorter timescales are better at capturing distinct states, while longer tim…

from my link log —
Compact representations for arrays in Lua.
https://sol.sbc.org.br/index.php/sblp/article/view/30252
saved 2025-06-22

Time of proto-Earth reservoir formation and volatile element depletion from 53Mn-53Cr chronometry: #Earth probably needed supplies from space: https://mediarelations.unibe.ch/media_releases/2025/media_releases_2025/no_collision_no_life_earth_probably_needed_supplies_from_space/index_eng.html

Linkdump 22/2025 – #fundstücke

Well, it's not precisely *working*, as such. But it definitely isn't not working!
Tittle: Turtles in #Clojure #Scittle, with gratitude to @… !

#FotoDerWoche (oder auch fünf) aus Kopenhagen - Meer, Fahrradstadt, Architektur.
https://blog.till-westermayer.de/index.php/2025/08/29/photo-of-th…

Photo of the week: Copenhagen (part I)
Wie schon bei Florenz zu Ostern (und ja, wie eigentlich immer bei Reisen ...) gibt es sehr viele Fotos, die ich aus Kopenhagen mitgebracht habe. Inzwischen habe ich sie sortiert und auf Flickr gestellt. Um meine Photo-of-the-Week-Rubrik nicht zu überfrachten, gibt es heute dann gleich mehrere Fotos

Structural Decomposition of Moran's Index by Getis-Ord's Indices
Yanguang Chen
https://arxiv.org/abs/2508.19908 https://arxiv.org/pdf/2508.19908

Structural Decomposition of Moran's Index by Getis-Ord's Indices
Moran's index and Getis-Ord,s indices are important statistical measures of spatial autocorrelation analysis. Each of them has its own function and scope of application. However, the association of Moran index with Getis-Ord index is not clear. This paper is devoted to deriving and verify the relationships between Moran's index and Getis-Ord's indices using mathematical reasoning and empirical analysis. Getis-Ord's indices are employed to decompose Moran's index. The results show that there is …

ATTN all hams within the sound of my voice...just about two weeks to go until the Second Annual Ham Radio μExpo at Cal State University Channel Islands, brought to you by the #BoredNetGroup. Everyone's welcome, it's nothing but a hangout for hams to show off the stuff they like to do. No vendors. No industry. No charge for attendance. No charge to exhibit. Six bucks to park a car.

Mon mirroir local http://ftp.free.fr/pub/Distributions_Linux/Fedora/releases/ ne contient pas la dernière version de ma distro ......
#free

The index of the cosmological horizon and the area-charge-inequality
Neilha Pinheiro
https://arxiv.org/abs/2508.19490 https://arxiv.org/pdf/2508.19490

The index of the cosmological horizon and the area-charge-inequality
In this article, we investigate the index of the MOTS given by a spatial cross section of the cosmological horizon in the Kerr-Newman-de Sitter spacetime. We show that its index is one in the symmetrized sense for a small positive parameter a, such parameter defines the angular momentum. As an application, we prove that this MOTS is unstable. We also establish an estimate relating the area and the charge of a MOTS of index one in a Cauchy data satisfying the dominant energy condition.

The index of a real vector field at an isolated complete intersection singularity
Achim Hennings
https://arxiv.org/abs/2508.19718 https://arxiv.org/pdf/250…

The index of a real vector field at an isolated complete intersection singularity
In an unpublished note [H1] we have described a method to obtain a formula for the index of an analytic vector field with (complex) isolated zero on a real analytic hypersurface with (complex) isolated singularity. This formula, like the one of Eisenbud-Levine and Khimshiashvili [AGV] for smooth points, expresses the index by the signature of bilinear forms, which are defined by a local residue symbol (cf. [Ma]). In the complete intersection case, we use a generalized residue symbol, defined fo…

@… Kurze Frage: Wenn eine URL im Index ist, aber eine Canonical mit einem Parameter (?lang=0) hat, ist das problematisch oder ist Google da schlau genug das zu ignorieren?

Warum Feeds wichtiger sind, als viele denken – https://www.deimeke.net/dirk/blog/index.php?/archives/4427-Warum-Feeds-wichtiger-sind,-als-viele-denken.html

Study: the loss of local newspapers is linked with more local and state government secrecy; wait times and copy fees also hinder access to government documents (John Volk/Local News Initiative)
https://localnewsinitiative.northweste

Lack of Local News Tied to Government Secrecy, New Report Says
The loss of local news is linked with increased government secrecy, according to a new study conducted by the Brechner Center for the Advancement of the First Amendment at the University of Florida.

Minimizing AoI in Mobile Edge Computing: Nested Index Policy with Preemptive and Non-preemptive Structure
Ning Yang, Yibo Liu, Shuo Chen, Meng Zhang, Haijun Zhang
https://arxiv.org/abs/2508.20564

Minimizing AoI in Mobile Edge Computing: Nested Index Policy with Preemptive and Non-preemptive Structure
Mobile Edge Computing (MEC) leverages computational heterogeneity between mobile devices and edge nodes to enable real-time applications requiring high information freshness. The Age-of-Information (AoI) metric serves as a crucial evaluator of information timeliness in such systems. Addressing AoI minimization in multi-user MEC environments presents significant challenges due to stochastic computing times. In this paper, we consider multiple users offloading tasks to heterogeneous edge servers …

Fällt mir gerade so ein, dass es cool wäre, wenn OWI (Open Web Index) auch Backlink-Suche bieten würde. So wie Google vor... 10 (?) Jahren noch via link:#owi

Sammy Obeid tried to organize a show in #Singapore
This did not go well. Had to submit his whole script in advance. Ultimately rejected.
That's the thing with Singapore, it's an awesome place to visit, but it's also not very democratic. Protests need a permit, etc.

The Curious Case of High-Dimensional Indexing as a File Structure: A Case Study of eCP-FS
Omar Shahbaz Khan, Gylfi {\TH}\'or Gu{\dh}mundsson, Bj\"orn {\TH}\'or J\'onsson
https://arxiv.org/abs/2507.21939

The Curious Case of High-Dimensional Indexing as a File Structure: A Case Study of eCP-FS
Modern analytical pipelines routinely deploy multiple deep learning and retrieval models that rely on approximate nearest-neighbor (ANN) indexes to support efficient similarity-based search. While many state-of-the-art ANN-indexes are memory-based (e.g., HNSW and IVF), using multiple ANN indexes creates a competition for limited GPU/CPU memory resources, which in turn necessitates disk-based index structures (e.g., DiskANN or eCP). In typical index implementations, the main component is a compl…

See my pinned post about The Sheep Look Up by John Brunner sad face
https://kolektiva.social/@DoomsdaysCW/114938705427415930

The RFKJr. situation is generally terrible and all, but apparently CDC managed to keep enough conditions in the "high risk" qualifications to cover just about everyone.
#Covid #Vaccines

„Meine 15 Minuten Ruhm“ – Blogartikel und Erlebnisse, die für mich bedeutsam waren – https://www.deimeke.net/dirk/blog/index.php?/archives/4416-Meine-15-Minuten-Ruhm-Blogartikel-und-Erlebnisse,-die-fuer…

Refractometry with filled antiresonant capillary fibers
Sinei Felix Gon\c{c}alves Junior, Lidia O. Rosa, Flavio A. M. Marques, Alexandre A. C. Cotta, Jefferson E. Tsuchida, Eric Fujiwara, Cristiano M. B. Cordeiro, Jonas H. Os\'orio
https://arxiv.org/abs/2507.20817

Refractometry with filled antiresonant capillary fibers
We demonstrate the realization of refractometric measurements relying on the study of the transmission spectrum of filled capillary fibers. In this method, the fiber is filled with a material with a lower refractive index than that of the capillary and, due to antiresonant guidance mechanism, a characteristic transmission spectrum alternating high and low attenuation regions is obtained. The refractive index data is hence extracted by analyzing the spectral positions of the fiber transmission b…

Retrieval-Augmented Generation for Natural Language Art Provenance Searches in the Getty Provenance Index
Mathew Henrickson
https://arxiv.org/abs/2508.19093 https://

Retrieval-Augmented Generation for Natural Language Art Provenance Searches in the Getty Provenance Index
This research presents a Retrieval-Augmented Generation (RAG) framework for art provenance studies, focusing on the Getty Provenance Index. Provenance research establishes the ownership history of artworks, which is essential for verifying authenticity, supporting restitution and legal claims, and understanding the cultural and historical context of art objects. The process is complicated by fragmented, multilingual archival data that hinders efficient retrieval. Current search portals require …

Thou shalt not say Epstein....
https://southpark.cc.com/sites/hetrumpedus/index.html

Two different takes on the potential of AI for cataloguing in 'Catalogue and Index'
'Augmenting cataloguers' https://journals.cilip.org.uk/catalogue-and-index/article/view/750
'Smart enough to mislead'

Measuring the Macroeconomic and Financial Stability of Bangladesh
Faruque Ahamed, Md Ataur Rahman Chowdhury
https://arxiv.org/abs/2507.20340 https://arxiv.…

Measuring the Macroeconomic and Financial Stability of Bangladesh
This study constructs an Aggregate Financial Stability Index (AFSI) for Bangladesh to evaluate the systemic health and resilience of the countrys financial system during the period from 2016 to 2024. The index incorporates 19 macrofinancial indicators across four key sectors Real Sector, Financial and Monetary Sector, Fiscal Sector and External Sector. Using a normalized scoring approach and equal weighting scheme, sub-indices were aggregated to form a comprehensive measure of financial stabili…

A nice (and thorough) assessment of the late Chris Whelan's work in the latest Economic and Social Review https://www.esr.ie/index.php/esr/article/view/3238

Robust Tail Index Estimation under Random Censoring via Minimum Density Power Divergence
Nour Elhouda Guesmia, Abdelhakim Necir, Djamel Meraghni
https://arxiv.org/abs/2507.18737

Robust Tail Index Estimation under Random Censoring via Minimum Density Power Divergence
Based on the minimum density power divergence approach, we propose a robust estimator of the tail index for randomly right-censored data from a Pareto-type distribution. We establish its consistency and asymptotic normality. An extensive simulation study is performed to assess the finite-sample behavior of the estimator in comparison with existing ones. The methodology is further illustrated through an application to a real AIDS survival dataset.

U.S. drops to lowest ranking yet on index of most powerful passports
https://thehill.com/homenews/administration/5419439-u-s-drops-to-lowest-ranking-yet-on-index-of-most-powerful-passports/

RIS Codebook Index Assignment under Imperfect Control Links Using TSP-Inspired Optimization
Liangshun Wu, Wen Chen, Qingqing Wu, Xudong Bai, Kunlun Wang
https://arxiv.org/abs/2507.18727

RIS Codebook Index Assignment under Imperfect Control Links Using TSP-Inspired Optimization
Reconfigurable Intelligent Surfaces (RIS) promise transformative gains in wireless communications by enabling programmable control of the propagation environment through discrete phase configurations. In practical deployments, the control of RIS phase states is typically managed using finite codebooks, with configuration indices transmitted over low latency, yet imperfect, wireless feedback channels. Even rare feedback bit errors can lead to significant mismatches between intended and applied R…

And this is so good! Just wish they'd chucked in a couple harmonies (which they normally do so well)... https://yewtu.be/watch?v=ASi7lyg5gRI&list=RD2ZbAKWki36E&index=3 or

Remember back in 2022, when people all across the Fediverse lost their absolute minds at the idea of someone building a search index of public posts, and took down several reasonable attempts at it?
I wonder how many of those people are storming the offices of MS, OpenAI, Grok, etc. about all the copyright infringing hoovering they're doing.
Oh, none? Thought so. So much easier to beat up on the solo developer trying to be useful.

In a new blog post admitting certain failures amid its users' mental health crises,
OpenAI also quietly disclosed that it's now scanning users' messages for certain types of harmful content,
escalating particularly worrying content to human staff for review
— and, in some cases, reporting it to the cops
ht…

Dynamical symmetry breaking in Georgi-Glashow chiral-gauge theories
Hao-Lin Li, \'Alvaro Pastor-Guti\'errez, Shahram Vatani, Ling-Xiao Xu
https://arxiv.org/abs/2507.21208

Dynamical symmetry breaking in Georgi-Glashow chiral-gauge theories
We investigate dynamical symmetry breaking in a class of chiral gauge theories containing the Georgi-Glashow model. These theories feature a gauge sector and two fermion species that transform in the two-index antisymmetric and antifundamental representations with different multiplicities. Using the effective action formalism and the functional renormalization group, we derive the flow of four-fermion interactions that encode their resonant structure and information about bound-state formation.…

The functions in the {withr} package allow to change your environment temporarily. E.g. create a temp file for a {testthat} test and clean it up afterwards. #rstats

Run Code With Temporarily Modified Global State
A set of functions to run code with safely and temporarily modified global state. Many of these functions were originally a part of the devtools package, this provides a simple package with limited dependencies to provide access to these functions.

Fast Compressed-Domain N-Point Discrete Fourier Transform
Saulo Queiroz
https://arxiv.org/abs/2505.23718 https://arxiv.org/pdf/2505.2…

Fast Compressed-Domain N-Point Discrete Fourier Transform
This paper presents a novel algorithm for computing the N-point Discrete Fourier Transform (DFT) based solely on recursive Rectangular Index Compression (RIC) [1][2] and structured frequency shifts. The RIC DFT algorithm compresses a signal from $N=CL$ to $C\in[2,N/2]$ points at the expense of $N-1$ complex additions and no complex multiplication. It is shown that a $C$-point DFT on the compressed signal corresponds exactly to $C$ DFT coefficients of the original $N$-point DFT, namely, $X_{kL}$…

An equation-based batch distillation simulation to evaluate the effect of multiplicities in thermodynamic activity coefficients
Jennifer Werner, Jochen Schmid, Lorenz T. Biegler, Michael Bortz
https://arxiv.org/abs/2506.21483

An equation-based batch distillation simulation to evaluate the effect of multiplicities in thermodynamic activity coefficients
In this paper, we investigate the influence of multiplicities in activity coefficients on batch distillation processes. In order to do so, we develop a rigorous simulation of batch distillation processes based on the MESH equations. In particular, we propose a novel index reduction method to transform the original index-$2$ system into a well-posed differential-algebraic system of index $1$. With the help of this simulation, we then explore whether the alternative NRTL parameters, which yield i…

The infrared jet of #M87 observed with JWST: https://arxiv.org/abs/2507.18716 -> "We present the first JWST NIRCam images of the giant elliptical active galaxy M87 and its jet at 0.90, 1.50, 2.77 and 3.56 µm. We analysed the large-scale jet structure, identifying prominent components, and determined the near-infrared spectral index."

Anomalous refractive index modulation and giant birefringence in 2D ferrielectric CuInP$_2$S$_6$
Houssam El Mrabet Haje, Roald J. H. van der Kolk, Trent M. Kyrk, Mazhar N. Ali
https://arxiv.org/abs/2506.21279

Anomalous refractive index modulation and giant birefringence in 2D ferrielectric CuInP$_2$S$_6$
2D ferroelectric (FE) materials have opened new opportunities in non-volatile memories, computation and non-linear optics due to their robust polarization in the ultra-thin limit and inherent flexibility in device integration. Recently, interest has grown in the use of 2D FEs in electro-optics, demanding the exploration of their electronic and optical properties. In this work, we report the discovery of an unprecedented anomalous thickness-dependent change in refractive index, as large as $δn$…

A Product Formula for Family Indices and Family Band Width Estimates
Chenkai Song
https://arxiv.org/abs/2507.21594 https://arxiv.org/pdf/2507.21594

A Product Formula for Family Indices and Family Band Width Estimates
We extend Gromov's conjecture on the sharp estimate of band width to the family case and prove that it holds for fiber bundles having infinite A-hat area. The method we employ is based on the Dirac operators and the family index theory. Our proof relies on a product formula for index bundles established in this paper.

This https://arxiv.org/abs/2407.10145 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Simplifying generic smooth maps to the 2-sphere and to the plane
We study how to construct explicit deformations of generic smooth maps from closed $n$--dimensional manifolds $M$ with $n \geq 2$ to the $2$--sphere $S^2$ and show that every smooth map $M \to S^2$ is homotopic to a $C^\infty$ stable map with at most one cusp point and with only folds of the middle absolute index. Furthermore, if $n$ is even, such a $C^\infty$ stable map can be so constructed that the restriction to the singular point set is a topological embedding. As a corollary, we show that…

CleANN: Efficient Full Dynamism in Graph-based Approximate Nearest Neighbor Search
Ziyu Zhang, Yuanhao Wei, Joshua Engels, Julian Shun
https://arxiv.org/abs/2507.19802 https://

CleANN: Efficient Full Dynamism in Graph-based Approximate Nearest Neighbor Search
Approximate nearest neighbor search (ANNS) has become a quintessential algorithmic problem for various other foundational data tasks for AI workloads. Graph-based ANNS indexes have superb empirical trade-offs in indexing cost, query efficiency, and query approximation quality. Most existing graph-based indexes are designed for the static scenario, where there are no updates to the data after the index is constructed. However, full dynamism (insertions, deletions, and searches) is crucial to pro…

On the hidden costs of passive investing
Iro Tasitsiomi
https://arxiv.org/abs/2506.21775 https://arxiv.org/pdf/2506.21775

On the hidden costs of passive investing
Passive investing has gained immense popularity due to its low fees and the perceived simplicity of focusing on zero tracking error, rather than security selection. However, our analysis shows that the passive (zero tracking error) approach of waiting until the market close on the day of index reconstitution to purchase a stock (that was announced days earlier as an upcoming addition) results in costs amounting to hundreds of basis points compared to strategies that involve gradually acquiring …

The C-index Multiverse
Bego\~na B. Sierra, Colin McLean, Peter S. Hall, Catalina A. Vallejos
https://arxiv.org/abs/2508.14821 https://arxiv.org/pdf/2508.14…

The C-index Multiverse
Quantifying out-of-sample discrimination performance for time-to-event outcomes is a fundamental step for model evaluation and selection in the context of predictive modelling. The concordance index, or C-index, is a widely used metric for this purpose, particularly with the growing development of machine learning methods. Beyond differences between proposed C-index estimators (e.g. Harrell's, Uno's and Antolini's), we demonstrate the existence of a C-index multiverse among available R and pyth…

This https://arxiv.org/abs/2505.05128 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Constraints Preserving Lax-Wendroff Flux Reconstruction for Relativistic Hydrodynamics with General Equations of State
In the realm of relativistic astrophysics, the ideal equation of state with a constant adiabatic index provides a poor approximation due to its inconsistency with relativistic kinetic theory. However, it is a common practice to use it for relativistic fluid flow equations due to its simplicity. Here we develop a high-order Lax-Wendroff flux reconstruction method on Cartesian grids for solving special relativistic hydrodynamics equations with several general equations of state available in the l…

Today I casually heard this radio called #FRRAPO and it's WONDERFUL
https://frrapo.de/player/index.php
The segment I heard included an interview with a Greek producer (or DJ?) who played an excelle…

Hurricane Impact Index for Assessing Direct and Indirect Hazards in Central America
Manrique Camacho, Amanda Cede\~no, Luis A. Barboza, Shu Wei Chou-Chen, Mario J. G\'omez, Hugo G. Hidalgo
https://arxiv.org/abs/2506.19858

Hurricane Impact Index for Assessing Direct and Indirect Hazards in Central America
Hurricanes rank among the most destructive natural hazards. They are complex phenomena that can cause both direct damage along their path and indirect impacts due to heavy rainfall and strong winds, with effects varying according to regional topography. In this paper, we propose a Hurricane Impact Index to assess both direct and indirect hazards, and we demonstrate its applicability to the Central American region. The index is constructed so that we can decompose these effects across multiple d…

Which region is well-equipped for 2035 with a well-educated people and proper institutions for a flourishing #society?
Check out following #blog post:

The Community Index: A More Comprehensive Approach to Assessing Scholarly Impact
Arav Kumar, Cameron Sabet, Alessandro Hammond, Amelia Fiske, Bhav Jain, Deirdre Goode, Dharaa Suresha, Leo Anthony Celi, Lisa Soleymani Lehmann, Ned Mccague, Rawan Abulibdeh, Sameer Pradhan
https://arxiv.org/abs/2508.16519…

The Community Index: A More Comprehensive Approach to Assessing Scholarly Impact
The h index is a widely recognized metric for assessing the research impact of scholars, defined as the maximum value h such that the scholar has published h papers each cited at least h times. While it has proven useful measuring individual scholarly productivity and citation impact, the h index has limitations, such as an inability to account for interdisciplinary collaboration or demographic differences in citation patterns. Moreover, it is sometimes mistakenly treated as a measure of resear…

Careers at arXiv - arXiv info #fedijobs
https://info.arxiv.org/hiring/index.html

Etwas zur dunklen Seite von Science Fiction und Fantasy - Musk und Meloni - aufgeschrieben. Verrenne ich mich, wenn ich Science Fiction als politisches Medium sehe, um dessen progressive Aneignung durchaus gekämpft werden kann?
https://blog.till-westermayer.de…

Lesarten von Science Fiction: Die dunkle Seite der Macht
Vorbemerkung: ich habe diesen Text größtenteils bereits im April geschrieben - inzwischen hat sich das Verhältnis zwischen Musk und Trump deutlich verändert. Die Aussagen unten scheinen mir aber weiterhin Gültigkeit zu behalten ... Wie politisch sind Science Fiction und Fantasy? Schriftstellerinn

This https://arxiv.org/abs/2505.22371 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_sta…

Adaptive tail index estimation: minimal assumptions and non-asymptotic guarantees
A notoriously difficult challenge in extreme value theory is the choice of the number $k\ll n$, where $n$ is the total sample size, of extreme data points to consider for inference of tail quantities. Existing theoretical guarantees for adaptive methods typically require second-order assumptions or von Mises assumptions that are difficult to verify and often come with tuning parameters that are challenging to calibrate. This paper revisits the problem of adaptive selection of $k$ for the Hill…

Found a bunch of BSides with fediverse accounts I wasn't following. I should probably update my fediverse #BSides index... 😅
Bsides & InfoSec Cons by Region
📌⁠ https://infosec.exchange/@catsalad/111

Scalable Dip-Coated Bragg Mirrors for Strong Light-Matter Coupling with 2D Perovskites
Melissa M\'endez-Galv\'an, Zaira Saucedo-Ch\'avez, Diana Medrano, Michael Zuarez-Chamba, Yesenia A. Garc\'ia-Jomaso, C\'esar L. Ord\'o\~nez-Romero, Giuseppe Pirruccio, Arturo Camacho-Guardian, Galo J. A. A. Soler-Illia, Hugo A. Lara-Garc\'ia

Scalable Dip-Coated Bragg Mirrors for Strong Light-Matter Coupling with 2D Perovskites
We report a scalable and cost-effective method for fabricating high-performance Bragg mirrors using a bottom-up approach that combines evaporation-induced self-assembly (EISA) and dip-coating. The photonic crystals are composed of alternating mesoporous SiO$_2$ and dense TiO$_2$ layers, providing a high refractive index contrast ($\sim$0.8). This enables strong reflectance (up to 96%) with as few as five bilayers and precise control of the photonic stop band across the visible spectrum by simpl…

Fascinating research: is your metabolism rate affected by whether you’ve been conceived during cold season? Answer seems to be “yes”.
https://www.nature.com/articles/s42255-025-01249-2

Pre-fertilization-origin preservation of brown fat-mediated energy expenditure in humans - Nature Metabolism
In humans, conception during cold seasons is shown to exhibit higher brown adipose tissue activity and adaptive thermogenesis, and lower body mass index and visceral fat accumulation in the offspring.

Single-Index Quantile Factor Model with Observed Characteristics
Ruofan Xu, Qingliang Fan
https://arxiv.org/abs/2506.19586 https://ar…

Single-Index Quantile Factor Model with Observed Characteristics
We propose a characteristics-augmented quantile factor (QCF) model, where unknown factor loading functions are linked to a large set of observed individual-level (e.g., bond- or stock-specific) covariates via a single-index projection. The single-index specification offers a parsimonious, interpretable, and statistically efficient way to nonparametrically characterize the time-varying loadings, while avoiding the curse of dimensionality in flexible nonparametric models. Using a three-step sieve…

Happy SysAdmin Day everyone! Here is a head scratcher. Website kept serving the default new site page. Even when I made a new index.html file. So I made a test.html and got Forbidden. Error log says "client denied by server configuration: /var/www/newwebsite/test.html" Not directory permissions and not selinux. So I made /var/www/newweb2 and moved the files over. Voila, working. Both test.htnl and new index.html. I'm leaving it alone because it's working and it's Friday…

Haben Blogs Nachwuchs? – #blogwochen2025

from my link log —
Against Curry-Howard mysticism.
https://liamoc.net/forest/loc-000S/index.xml
saved 2025-05-26 https://

"“I Don’t Think Librarians Can Save Us”: The Material Conditions of Information Literacy Instruction in the Misinformation Age"
https://crl.acrl.org/index.php/crl/article/view/26856
"This national qualitative study investigates academic librarians’ instruc…

#FotoDerWoche mit einem Stück Berliner Mauer in künstlerischer Auseinandersetzung.
https://blog.till-westermayer.de/index.php/2025/07/27/photo-of-the-we…

Photo of the week: Berlin wall
Anfang Juli war ich in Berlin und hatte ein Hotelzimmer in der Nähe der Mauergedenkstätte. Da ist dieses Foto entstanden - eine von meheren künstlerischen Installationen, die sich mit der ehemaligen Berliner Mauer, den Mauertoten und der Teilung der Stadt auseinandersetzen.

The {purrr} package is a powerfull way to replace loops. The {furrr} package takes this approach one step further by parallel execution: #rstats

Apply Mapping Functions in Parallel using Futures
Implementations of the family of map() functions from purrr that can be resolved using any future-supported backend, e.g. parallel on the local machine or distributed on a compute cluster.

Study: the loss of local newspapers is linked with more local and state government secrecy; wait times and copy fees also hinder access to government documents (John Volk/Local News Initiative)
https://localnewsinitiative.northweste

Replaced article(s) found for cs.IT. https://arxiv.org/list/cs.IT/new
[1/1]:
- Measuring Scientific Group Performance: Integrating h-Group and Homogeneity into the $\alpha$-Index
Roberto da Silva, Jose Palazzo de Oliveira, Viviane Moreira

HLTCOE at LiveRAG: GPT-Researcher using ColBERT retrieval
Kevin Duh, Eugene Yang, Orion Weller, Andrew Yates, Dawn Lawrie
https://arxiv.org/abs/2506.22356 …

HLTCOE at LiveRAG: GPT-Researcher using ColBERT retrieval
The HLTCOE LiveRAG submission utilized the GPT-researcher framework for researching the context of the question, filtering the returned results, and generating the final answer. The retrieval system was a ColBERT bi-encoder architecture, which represents a passage with many dense tokens. Retrieval used a local, compressed index of the FineWeb10-BT collection created with PLAID-X, using a model fine-tuned for multilingual retrieval. Query generation from context was done with Qwen2.5-7B-Instruct…

Microsoft’s 2025 work trend index report found that many workers are increasingly grappling with “infinite workdays”,
which start before sunrise and stretch late into the night.
They are interrupted by some 270 pinging notifications along the way, about one every two minutes.
https://www.…

Breaking down the infinite workday
To unlock AI’s full potential, we need to clear one key barrier. A follow-up to the 2025 Work Trend Index.

Warum ich mir wünsche, dass Historiker*innen 2050 von den "mad twenties" sprechen, wenn sie unsere Gegenwart in den Blick nehmen.
https://blog.till-westermayer.de/index.php/2025/08/28/kurz-the-mad-twenties/

Piecewise Linear Approximation in Learned Index Structures: Theoretical and Empirical Analysis
Jiayong Qin, Xianyu Zhu, Qiyu Liu, Guangyi Zhang, Zhigang Cai, Jianwei Liao, Sha Hu, Jingshu Peng, Yingxia Shao, Lei Chen
https://arxiv.org/abs/2506.20139

Piecewise Linear Approximation in Learned Index Structures: Theoretical and Empirical Analysis
A growing trend in the database and system communities is to augment conventional index structures, such as B+-trees, with machine learning (ML) models. Among these, error-bounded Piecewise Linear Approximation ($ε$-PLA) has emerged as a popular choice due to its simplicity and effectiveness. Despite its central role in many learned indexes, the design and analysis of $ε$-PLA fitting algorithms remain underexplored. In this paper, we revisit $ε$-PLA from both theoretical and empirical perspe…

Record-high-Q AMTIR-1 microresonators for mid- to long-wave infrared nonlinear photonics
Liu Yang, Ryo Sugano, Ryomei Takabayashi, Hajime Kumazaki, Yongyong Zhuang, Xiaoyong Wei, Takasumi Tanabe, Shun Fujii
https://arxiv.org/abs/2505.23362

Record-high-Q AMTIR-1 microresonators for mid- to long-wave infrared nonlinear photonics
AMTIR-1 chalcogenide glass has shown its potential for use in thermal imaging systems owing to its low refractive index, thermal resistance and high transparency across the infrared wavelength regime. Here we report a millimeter-scale high-Q whispering gallery mode microresonator made of AMTIR-1. The recorded Q-factor has reached $1.2\times10^7$ at 1550~nm, which is almost two-orders of magnitude higher than previously reported values. We characterize the thermal properties, where low thermal c…

Replaced article(s) found for physics.soc-ph. https://arxiv.org/list/physics.soc-ph/new
[1/1]:
- Political Stress Index of Poland
Tomasz Stachowiak, Zbigniew Pasek

A canonical Fano threefold has Fano index $\leq 66$
Chen Jiang, Haidong Liu
https://arxiv.org/abs/2508.16364 https://arxiv.org/pdf/2508.16364

A canonical Fano threefold has Fano index $\leq 66$
We show that the $\mathbb{Q}$-Fano index of a canonical weak Fano $3$-fold is at most $66$. This upper bound is optimal and gives an affirmative answer to a conjecture of Chengxi Wang in dimension $3$. During the proof, we establish a new Riemmann--Roch formula for canonical $3$-folds and provide a detailed study of non-isolated singularities on canonical Fano $3$-folds, concerning both their local and global properties. Our proof also involves a Kawamata--Miyaoka type inequality and geometry o…

Linkdump 26/2025 – #fundstücke

Replaced article(s) found for math.ST. https://arxiv.org/list/math.ST/new
[1/1]:
- Robust Tail Index Estimation under Random Censoring via Minimum Density Power Divergence
Nour Elhouda Guesmia, Abdelhakim Necir, Djamel Meraghni

"Captain Underpants and the Conundrum of Creating a Custom Cookie Cutter: Creating a Unique, Edible Treat for Banned Books Week" https://crln.acrl.org/index.php/crlnews/article/view/26878
"The University Libraries at the University of Nevada, Reno, celebra…

from my link log —
Anaphoric macros introduce hidden bindings in Lisp.
https://letoverlambda.com/index.cl/guest/chap6.html
saved 2025-08-16

If you just need a pretty figure from a dataset and not the full power of R, have a look at #gui

"Development of an Integrated Lifecycle of #RDM #Tools: Looking Back and Forward at KU Leuven"
https://ijdc.net/index.…

Transformation of topological optical states via spiral modulation in fractional-diffraction systems
Dongdong Wang, Xueqing He, Rujiang Li, Dumitru Mihalache, Boris A. Malomed, Pengfei Li
https://arxiv.org/abs/2508.20651

Transformation of topological optical states via spiral modulation in fractional-diffraction systems
We propose a scheme for manipulations of a variety of topological states in fractional optical systems through spiral modulation of the local refraction index. An analytical approximation, based on a truncated finite-mode system, and direct simulations reveal that the spiral modulation supports direct mutual conversion between eigenmodes with topological-charge difference Δm=1, driven by the resonant coupling between the modes and the underlying spiral modulation. The conversion between eigenm…

Geomorphological Evidence of Near-Surface Ice at Candidate Landing Sites in Northern Amazonis Planitia, Mars: #Mars: https://olemiss.edu/news/2025/06/researchers-take-one-small-step-toward-planning-life-on-mars/index.html - near-surface water ice could provide resources for human exploration on the Red Planet.

from my link log —
Kernighan's lever.
https://www.linusakesson.net/programming/kernighans-lever/index.php
saved 2025-05-10

"Einsatzgebiete von Künstlicher Intelligenz in wissenschaftlichen Bibliotheken – Praxis und Perspektiven": Bachelor-Arbeit von Carina Pizzini an der TH Köln: https://publiscologne.th-koeln.de/frontdoor/index/index/docId/2678

Linkdump 30/2025 – #fundstücke

Terahertz frequency conversion at plasma-induced time boundary
Yindong Huang, Bin Zhou, Aijun Xuan, Mingxin Gao, Jing Lou, Xiaomin Qu, Zengxiu Zhao, Ce Shang, Xuchen Wang, Chao Chang, Viktar Asadchy
https://arxiv.org/abs/2507.20663

Terahertz frequency conversion at plasma-induced time boundary
We report on the frequency conversions of terahertz (THz) waves at ultrafast time boundaries created via femtosecond laser-induced air-to-plasma phase transitions. Our combined experimental and theoretical approach reveals that the abrupt change in refractive index at the ultrafast time boundaries drives both the red and blue shifts over the broadband THz spectrum due to the dispersive plasma, with distinctive amplitude variations. The present study contrasts these effects with those from spati…

Ein paar wenige Beeren für das eine oder andere Frühstück oder Vögel & Co. hängen noch, aber die meisten sind jetzt geerntet - zur Johannisbeerzeit gebloggt.
https://blog.till-westermayer.de/index.php/2025/06/22/johannisbeerzeit/

Johannisbeerzeit
< Dieses Jahr gab's sehr reichlich Johannisbeeren im Garten - heute, also fast pünktlich zur Sommersonnenwende habe ich die letzten geerntet. Wir haben vor allem rote Johannisbeeren an Büschen, die vermutlich ähnlich alt wie das Haus sind, also aus den 1970ern stammen. Aus dem einen Busch schwa

Treffen nach den Blogwochen – #blogwochen2025…

#FotoDerWoche mit Wolken. https://blog.till-westermayer.de/index.php/2025/07/20/photo-of-the-week-summer-evening-sky/

Photo of the week: Summer evening sky
Bester Himmel.

Linkdump 34/2025 – #fundstücke

#FotoDerWoche zur Sommersonennwende. Happy Solstice!
https://blog.till-westermayer.de/index.php/2025/06/21/photo-of-the-week-summer-evening/…

Photo of the week: Summer evening
Fast pünktlich zur heutigen Sommersonnenwende aufgenommen: ein langer lauer Sommerabend auf dem Balkon, mit heißer Schokolade und einem Buch (hier: Those beyond the wall von Micaiah Johnson). Herzlichen Glückwunsch allen, die die Jahreszeitenfeste feiern (und hey: die beiden Sommerwenden und die

Blogsysteme jenseits von Wordpress – #blogwochen2025