Tootfinder

Physical Layer Challenge-Response Authentication between Ambient Backscatter Devices
Yifan Zhang, Yongchao Dang, Masoud Kaveh, Zheng Yan, Riku J\"antti, Zhu Han
https://arxiv.org/abs/2506.18767

Physical Layer Challenge-Response Authentication between Ambient Backscatter Devices
Ambient backscatter communication (AmBC) has become an integral part of ubiquitous Internet of Things (IoT) applications due to its energy-harvesting capabilities and ultra-low-power consumption. However, the open wireless environment exposes AmBC systems to various attacks, and existing authentication methods cannot be implemented between resource-constrained backscatter devices (BDs) due to their high computational demands.To this end, this paper proposes PLCRA-BD, a novel physical layer chal…

Observation of period doubling and higher multiplicities in a driven single-spin system
Dhruv Deshmukh, Ra\'ul B. Gonz\'alez, Roberto Sailer, Fedor Jelezko, Ressa S. Said, Joachim Ankerhold
https://arxiv.org/abs/2507.18387

Observation of period doubling and higher multiplicities in a driven single-spin system
One of the prime features of quantum systems strongly driven by external time-periodic fields is the subharmonic response with integer multiples of the drive period $k\, T_d$. Here we demonstrate experimentally based on a careful theoretical analysis period doubling and higher multiplicities ($k=2,\ldots 5$) for one of the most fundamental systems, namely, an individual spin-$1/2$. Realized as a nitrogen vacancy center in diamond, the particular coherence properties under ambient conditions, st…

LA CHIEF OF POLICE ISSUES "VERIFY CREDENTIALS" DIRECTIVE FOR LAPD OFFICERS ENCOUNTERING PURPORTED IMMIGRATION ACTIONS The LAPD has issued a policy that says that LAPD officers responding to the scene of potential federal immigration enforcement actions should a) request an immigration enforcement supervisor if one is not already present, b) verify credentials of the supervisor or federal agent in charge if the agents are not clearly identifiable, and... 1/2
https://www.threads.com/@annepmitchellesq/post/DL0oCtTS-yb/los-angeles-chief-of-police-issues-verify-credentials-directive-for-lapd-officer

Energy budget in the 2017-09-07 "cold" solar flare
Gregory D. Fleishman, Galina G. Motorina, Sijie Yu, Gelu M. Nita
https://arxiv.org/abs/2506.15501

Energy budget in the 2017-09-07 "cold" solar flare
A subclass of early impulsive solar flares, cold flares, was proposed to represent a clean case, where the release of the free magnetic energy (almost) entirely goes to acceleration of the nonthermal electrons, while the observed thermal response is entirely driven by the nonthermal energy deposition to the ambient plasma. This paper studies one more example of a cold flare, which was observed by a unique combination of instruments. In particular, this is the first cold flare observed with the …

Kanada: Erreichen NATO-Ziel früher
Kanada wird die NATO-Richtlinie für Militärausgaben bis Anfang nächsten Jahres erfüllen und die Verteidigungsausgaben von den Vereinigten Staaten abkoppeln, die nach Ansicht von Premierminister Mark Carney auf der Weltbühne keine vorherrschende Rolle mehr spielen. Carney sagte, Kanada werde das Zwei-Prozent-Ziel der NATO fünf Jahre früher erreichen als bisher gepla…
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NATO-Minister beschließen gewaltiges Aufrüstungsprogramm
Die NATO-Verteidigungsminister haben sich in Brüssel auf neue Fähigkeitsziele für die Mitgliedsstaaten geeinigt, die eine gewaltige Aufrüstung bedeuten. Die konkreten Vorgaben sind dabei streng geheim.

JUNO 20-inch PMT and electronics system characterization using large pulses of PMT dark counts at the Pan-Asia testing platform
Caimei Liu, Min Li, Narongkiat Rodphai, Zhimin Wang, Jun Hu, Nikolay Anfimov, Lei Fan, Alberto Garfagnini, Guanghua Gong, Shaojing Hou, Xiaolu Ji, Xiaoshan Jiang, Denis Korablev, Tobias Lachenmaier, Si Ma, Xiaoyan Ma, Zhe Ning, Alexander G. Olshevskiy, Zhaoyuan Peng, Zhonghua Qin, Tobias Sterr, Yunhua Sun, Alexander Felix Tietzsch, Jun Wang, Wei Wang, Yangfu W…

JUNO 20-inch PMT and electronics system characterization using large pulses of PMT dark counts at the Pan-Asia testing platform
The main goal of the JUNO experiment is to determine the neutrino mass ordering with a 20kt liquid-scintillator detector. The 20-inch PMT and its 1F3 (one for three) electronics are crucial to realize the excellent energy resolution of at least 3% at 1MeV. The knowledge on the PMT and 1F3 electronics response is critical for detector performance understanding. A study of the JUNO 20-inch PMT and 1F3 electronics system characterization is presented using large pulses of PMT dark count at the Pan…

Vielen Dank für die Aufnahme in diesen "Zirkus". Ich bin ein Internetveteran. Seit den 90er-Jahren bin ich Mitglied im Förderverein Bürgernetz München Land e.V. Zeitweise war ich auch Vereinsvorsitzender.
Die Bürgernetzvereine gingen 1995 aus dem Projekt „Bayern Online I“ der bayerischen Staatsregierung hervor. Anfangs lag eine wichtige Aufgabe der Bürgernetze darin, den Menschen einen kostengünstigen Internetzugang zur Verfügung zu stellen und somit den Grundstein zur Verbr…

🇺🇦 #NowPlaying on BBCRadio3's #NightTracks
Frédéric Chopin & Maria João Pires:
🎵 Nocturne in A flat major (Op.32), no.2
#FrédéricChopin #MariaJoãoPires #newRelease 🆕 single
https://open.spotify.com/track/784aMHe79BvN0x34NVQRPn