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"VRBC: A Verifiable Redactable Blockchain with Efficient Query and Inte" by Guohua Tian, Jianghong Wei et al.

Driven by various legal obligations and service requirements, the redactable blockchain was introduced to balance the modifiability and immutability of blockchain technology. However, such a blockchain inevitably generates one or even more acceptable versions for the same block data, enabling malicious full nodes to deceive light/new nodes with old data, and even disrupt the consistency of the blockchain ledger. In this paper, we introduce the concept of verifiable redactable blockchain (VRBC) to provide efficient validity verification for on-chain data. To this end, we design a novel authentication data structure, called blockchain authentication tree (BAT), which employs a chameleon hash function and aggregatable vector commitment to bind continuously-appended blocks. Based on this, we propose an efficient VRBC scheme supporting integrity auditing, which not only allows the light nodes to query and validate on-chain data, but also enables new nodes to check the integrity of the block ....

Lockchain Authentication Tree , Hameleon Hash Function , Data Structures , Hash Functions , Integrity Auditing , Threat Modeling , Erifiable Redactable Blockchain ,

CNN CNN Newsroom June 4, 2024 14:49:00

Move forces up to the donbas and try to connect these two and try some synchronization, but they lack the ability. the russian military has established it s incompetent, leaderless, the leaders they do have are immoral and criminals, so they don t have the capability to do that. but there is the law of large numbers. they have the capability to conduct these artillery attacks and these drone attacks. i don t see a large maneuver operation on the part of the russians. punishing the civilian population where they can t gain on the ground. major general spider marks, thank you very much. thank you. what is at stake as the fda considers an experimental treatment for alzheimer s? there s the philly, the monster, the boss. if i hadn t seen it in person, i wouldn t have believed it. eating is believing g steph. the subway series. try subway s tastiest t menu upgrade yet. i m jonathan lawson here to tell you about life insurance ....

Russian Military , Drone Attacks , Artillery Attacks , Major General , The Monster , Alzheimer S , The Boss , Wouldn T , I Hadn T , Subway S Tastiest T Menu Upgrade ,

CNN CNN Newsroom June 4, 2024 14:46:00

To an ammunition depot like that? bad decision to house your troops right next to what s called an asp, an ammo supply point. the russians have increasingly over the course of this war, the russians have enjoyed a certain amount of sanctuary. i m not certain where the ammo supply point was specifically, but what ukraine has been able to do effectively is engage russian forces one-on-one in tactical fights. what has been increasing in their capability is their ability to conduct long-range fires and to synchronize that with activities on the ground. that s creating this bubble of synchronization, this air/land battle space and achieve effects on the ground. when you achieve sanctuary, and the russians in many case think they have sanctuary behind enemy lines, you put yourself at great risk and you make a lot of stupid decisions like this. perhaps an effect of the himars, one of the missile ....

Ammo Supply Point , Ammunition Depot , Supply Point , Land Battle Space , Behind Enemy Lines ,

Synchrony with chaos – blinking lights of a firefly swarm embody in nature what mathematics predicted

Synchrony is ubiquitous throughout the universe. But physicists’ equations predicted there could also be erratic exceptions marching to their own beat. Now they’ve been spotted in firefly swarms. ....

United States , Congaree National Park , South Carolina , Dorjsuren Battogtokh , Steven Strogatz , Yoshiki Kuramoto , Daniel Abrams , Peleg Lab , University Of Colorado , North American ,

"Savitzky-Golay Filter-Based PLL: Modeling and Performance Validation" by Kamrul Hasan, Sheikh Tanzim Meraj et al.

A phase-locked loop (PLL) based on synchronous reference frame (SRF) is a standard PLL that has a simple construction and performs well under undisrupted grid conditions. However, in imbalanced and harmonically disturbed environments, the fundamental grid voltage characteristics deteriorate greatly. Integrating a variety of filters in the control algorithm has been suggested as a solution to address this issue. An optimal low-pass filter characteristic can be achieved with the Savitzky-Golay filter (SGF), which is a zero-phase smoothing filter. The primary objective of this article is to offer a new small-signal design of SGF-based filtration in the SRF-PLL. Using this model, a researcher can easily evaluate the SGF-PLL's behavior and stability condition. A comparative analysis on performance evaluation is carried out with other PLLs, and the findings represent the principal achievements of this article. This includes a substantial improvement in dynamic response and harmonic prof ....

Grid Frequency , Armonics Elimination , Hase Locked Loop Pll , Avitzky Golay Filter ,