Tootfinder

First Steps Toward the Development of a Straight-Line Reference Alignment System for Future Accelerators at CERN Using Pseudo-Nondiffracting Layer Beams
Martin Du\v{s}ek, Sebastian Figura, Jakub Michal Polak, Solomon William Kamugasa, Dirk Mergelkuhl, Witold Niewiem, \v{S}t\v{e}p\'an Kunc, Jean-Christophe Gayde, Miroslav \v{S}ulc
https://

First Steps Toward the Development of a Straight-Line Reference Alignment System for Future Accelerators at CERN Using Pseudo-Nondiffracting Layer Beams
This paper presents experimental results that allow for the performance evaluation of a straight-line reference alignment system based on pseudo-nondiffracting Layer beams. Sensors, developed specifically for this system, feature four linear CMOS chips and a square aperture. This allows for simultaneous measurements along the beam path without disrupting the laser reference. Measurements, conducted over a distance of 2 m from the first to the last sensor, were compared with a laser tracker meas…

1/N Memory lane. Tuoreessa Skrolli-lehdessä on juttu 80-luvun marginaalisista kotitietokoneista. 80-luvun alussa Commodore 64 oli joka huushollin kodinkone, eikä siis yhtään kiinnostava. Mutta TTKK:n sähkötekniikan laitoksella joku, jonka nimeä en enää muista, myi pakettia, jossa oli jutussa mainittu 64-kiloinen Dragon, 1,2 megainen Teacin lerppuasema ja kehittynyt OS-9 -käyttöjärjestelmä. Sellainen oli paljon kiinnostavampi.

Some constructions of non-generalized Reed-Solomon MDS Codes
Kanat Abdukhalikov, Cunsheng Ding, Gyanendra K. Verma
https://arxiv.org/abs/2506.04080 https:/…

Some constructions of non-generalized Reed-Solomon MDS Codes
We investigate two classes of extended codes and provide necessary and sufficient conditions for these codes to be non-GRS MDS codes. We also determine the parity check matrices for these codes. Using the connection of MDS codes with arcs in finite projective spaces, we give a new characterization of o-monomials.

Conley-Zehnder Indices of Spatial Rotating Kepler Problem
Dongho Lee
https://arxiv.org/abs/2506.14325 https://arxiv.org/pdf/2506.1432…

Conley-Zehnder Indices of Spatial Rotating Kepler Problem
We study periodic orbits in the spatial rotating Kepler problem from a symplectic-topological perspective. Our first main result provides a complete classification of these orbits via a natural parametrization of the space of Kepler orbits, using angular momentum and the Laplace-Runge-Lenz vector. We then compute the Conley-Zehnder indices of non-degenerate orbits and the Robbin-Salamon indices of degenerate families, establishing their contributions to symplectic homology via the Morse-Bott sp…

Portugal, Spanien, Schweden, Finnland, Slowenien, Belgien, Luxemburg & Irland fordern die #EU-Kommission dazu auf, Maßnahmen setzen, um Handels- und Investitionsbeziehungen zu illegalen Siedlungen im #Westjordanland zu verhindern.
Das ist laut IGH obligatorisch.
https://www.reuters.com/world/middle-east/nine-eu-countries-call-talks-ending-trade-with-israeli-settlements-2025-06-19/

A note on multi-transitivity in non-autonomous discrete systems
Hongbo Zeng
https://arxiv.org/abs/2505.24657 https://arxiv.org/pdf/25…

A note on multi-transitivity in non-autonomous discrete systems
This paper is concerned with some stronger forms of transitivity in non-autonomous discrete systems$(f_{ 1,\infty})$ generated by a uniformly convergent sequence of continuous self maps. Firstly, we present two counterexamples to show that Theorem 3.1 obtained by Salman and Das in [Multi-transitivity in nonautonomous discrete systems Topol. Appl. 278(2020)107237] is not true. Then, we introduce and study mildly mixing in non-autonomous discrete systems, which is stronger than mixing. We obtain …

Physics of Strong Magnetism with eXTP
Mingyu Ge, Long Ji, Roberto Taverna, Sergey Tsygankov, Yanjun Xu, Andrea Santangelo, Silvia Zane, Shuang-Nan Zhang, Hua Feng, Wei Chen, Quan Cheng, Xian Hou, Matteo Imbrogno, Gian Luca Israel, Ruth Kelly, Ling-Da Kong, Kuan Liu, Alexander Mushtukov, Juri Poutanen, Valery Suleimanov, Lian Tao, Hao Tong, Roberto Turolla, Weihua Wang, Wentao Ye, Qing-Chang Zhao, Jinjun Geng, Lin Lin, Wei-Yang Wang, Fei Xie, Shao-Lin Xiong, Shu Zhang, Yucong Fu, Dong L…

Physics of Strong Magnetism with eXTP
In this paper we present the science potential of the enhanced X-ray Timing and Polarimetry (eXTP) mission, in its new configuration, for studies of strongly magnetized compact objects. We discuss the scientific potential of eXTP for QED studies, especially leveraging on the recent observations made with the NASA IXPE mission. Given eXTP's unique combination of timing, spectroscopy, and polarimetry, we focus on the perspectives for physics and astrophysics studies of strongly magnetized compact…

When Blockchain Meets Crawlers: Real-time Market Analytics in Solana NFT Markets
Chengxin Shen, Zhongwen Li, Xiaoqi Li, Zongwei Li
https://arxiv.org/abs/2506.02892

When Blockchain Meets Crawlers: Real-time Market Analytics in Solana NFT Markets
In this paper, we design and implement a web crawler system based on the Solana blockchain for the automated collection and analysis of market data for popular non-fungible tokens (NFTs) on the chain. Firstly, the basic information and transaction data of popular NFTs on the Solana chain are collected using the Selenium tool. Secondly, the transaction records of the Magic Eden trading market are thoroughly analyzed by combining them with the Scrapy framework to examine the price fluctuations an…

S’il se laisse entraîner par Israël dans le conflit, Donald Trump commettra la pire erreur de sa présidence, estime Rosemary Kelanic, politologue Š Defense Priorities, un think tank anti-interventionniste de Washington. « Non seulement les guerres préventives ne fonctionnent pas, mais elles ont des conséquences imprévues », met-elle en garde dans les colonnes du New York Times.
https://www.lemonde.fr/international/live/2025/06/17/en-direct-israel-iran-donald-trump-affirme-que-les-etats-unis-controlent-completement-l-espace-aerien-iranien_6612642_3210.html

Rapid yet accurate Tile-circuit and device modeling for Analog In-Memory Computing
J. Luquin, C. Mackin, S. Ambrogio, A. Chen, F. Baldi, G. Miralles, M. J. Rasch, J. B\"uchel, M. Lalwani, W. Ponghiran, P. Solomon, H. Tsai, G. W. Burr, P. Narayanan
https://arxiv.org/abs/2506.00004

Rapid yet accurate Tile-circuit and device modeling for Analog In-Memory Computing
Analog In-Memory Compute (AIMC) can improve the energy efficiency of Deep Learning by orders of magnitude. Yet analog-domain device and circuit non-idealities -- within the analog ``Tiles'' performing Matrix-Vector Multiply (MVM) operations -- can degrade neural-network task accuracy. We quantify the impact of low-level distortions and noise, and develop a mathematical model for Multiply-ACcumulate (MAC) operations mapped to analog tiles. Instantaneous-current IR-drop (the most significant circ…