Tootfinder

A Robust Pipeline for Differentially Private Federated Learning on Imbalanced Clinical Data using SMOTETomek and FedProx
Rodrigo Tertulino
https://arxiv.org/abs/2508.10017 https…

A Robust Pipeline for Differentially Private Federated Learning on Imbalanced Clinical Data using SMOTETomek and FedProx
Federated Learning (FL) presents a groundbreaking approach for collaborative health research, allowing model training on decentralized data while safeguarding patient privacy. FL offers formal security guarantees when combined with Differential Privacy (DP). The integration of these technologies, however, introduces a significant trade-off between privacy and clinical utility, a challenge further complicated by the severe class imbalance often present in medical datasets. The research presented…

Secure and Decentralized Peer-to-Peer Energy Transactions using Blockchain Technology
Antar Kumar Biswas, Masoud H. Nazari
https://arxiv.org/abs/2508.06728 https://

Secure and Decentralized Peer-to-Peer Energy Transactions using Blockchain Technology
This paper presents an optimal peer-to-peer (P2P) energy transaction mechanism leveraging decentralized blockchain technology to enable a secure and scalable retail electricity market for the increasing penetration of distributed energy resources (DERs). A decentralized bidding strategy is proposed to maximize individual profits while collectively enhancing social welfare. The market design and transaction processes are simulated using the Ethereum testnet, demonstrating the blockchain network'…

Onboard Dual Quaternion Guidance for Rocket Landing
Abhinav G. Kamath, Javier A. Doll, Purnanand Elango, Taewan Kim, Skye Mceowen, Yue Yu, Taylor P. Reynolds, Gavin F. Mendeck, John M. Carson III, Mehran Mesbahi, Beh\c{c}et A\c{c}{\i}kme\c{s}e
https://arxiv.org/abs/2508.10439

Onboard Dual Quaternion Guidance for Rocket Landing
The dual quaternion guidance (DQG) algorithm was selected as the candidate 6-DoF powered-descent guidance algorithm for NASA's Safe and Precise Landing -- Integrated Capabilities Evolution (SPLICE) project. DQG is capable of handling state-triggered constraints that are of utmost importance in terms of enabling technologies such as terrain relative navigation. In this work, we develop a custom solver for DQG to enable onboard implementation for future rocket landing missions. We describe the de…

Across China, tens of thousands of people tagged as troublemakers are trapped in a digital cage,
barred from leaving their province and sometimes even their homes
by the world’s largest digital surveillance apparatus.
Most of this technology came from companies in a country that has long claimed to support freedoms worldwide -- the United States.
⚠️ Over the past quarter century, American tech companies to a large degree designed and built China’s surveillance state,…

How Silicon Valley enabled China's digital police state
An AP investigation reveals that U.S. technology companies to a large degree designed and built China’s surveillance state, playing a far greater role in enabling human rights abuses than previously known. Firms including IBM, Dell, and Cisco sold billions in technology to Chinese police and government agencies, despite repeated warnings that such tools were being used to quash dissent, persecute religious sects and target minorities. Critically, American surveillance technologies allowed a b…

Granular jamming and rheology in microgravity
Qing Yu, Thorsten P\"oschel, Olfa D'Angelo
https://arxiv.org/abs/2507.08674 https://

Granular jamming and rheology in microgravity
Understanding how granular materials behave in low gravity is crucial for planetary science and space exploration. It can also help us understand granular phenomena usually hidden by gravity. On Earth, gravity dominates granular behavior, but disentangling its role from intrinsic particle interactions is challenging. We present a series of compression and shear experiments conducted in microgravity using the Center of Applied Space Technology and Microgravity (ZARM) drop tower and GraviTower Br…

https://apnews.com/article/chinese-surveillance-silicon-valley-uyghurs-tech-xinjiang-8e000601dadb6aea230f18170ed54e88
“Over the past quarter century, American tech companies to a large degree designed and built …

How Silicon Valley enabled China's digital police state
An AP investigation reveals that U.S. technology companies to a large degree designed and built China’s surveillance state, playing a far greater role in enabling human rights abuses than previously known. Firms including IBM, Dell, and Cisco sold billions in technology to Chinese police and government agencies, despite repeated warnings that such tools were being used to quash dissent, persecute religious sects and target minorities. Critically, American surveillance technologies allowed a b…

Analysing semantic data storage in Distributed Ledger Technologies for Data Spaces
Juan Cano-Benito, Andrea Cimmino, Sven Hertling, Heiko Paulheim, Ra\'ul Garc\'ia-Castro
https://arxiv.org/abs/2507.07116

Analysing semantic data storage in Distributed Ledger Technologies for Data Spaces
Data spaces are emerging as decentralised infrastructures that enable sovereign, secure, and trustworthy data exchange among multiple participants. To achieve semantic interoperability within these environments, the use of semantic web technologies and knowledge graphs has been proposed. Although distributed ledger technologies (DLT) fit as the underlying infrastructure for data spaces, there remains a significant gap in terms of the efficient storage of semantic data on these platforms. This p…

The University of Michigan paid over $800,000 to Amerishield,
parent company to a private security company called City Shield.
It was part of a broader
👉 $3 million public‑security budget, which included ⚠️surveillance of pro‑Palestinian student activists.
The university hired plainclothes agents who 💥trailed students into cafés, harassed them, and even staged confrontations,
including faking a disability to falsely accuse them of theft.
City Shield, a p…

US Campuses Have Become the Newest Laboratories for Surveillance Technology
From Gaza to the US, military-grade surveillance tools are being deployed to monitor and punish student dissent.

4-Swap: Achieving Grief-Free and Bribery-Safe Atomic Swaps Using Four Transactions
Kirti Singh (Indian Institute of Technology Bombay, India, Institute for Development and Research in Banking Technology, Hyderabad, India), Vinay J. Ribeiro (Indian Institute of Technology Bombay, India), Susmita Mandal (Institute for Development and Research in Banking Technology, Hyderabad, India)

4-Swap: Achieving Grief-Free and Bribery-Safe Atomic Swaps Using Four Transactions
Cross-chain asset exchange is crucial for blockchain interoperability. Existing solutions rely on trusted third parties and risk asset loss, or use decentralized alternatives like atomic swaps, which suffer from grief attacks. Griefing occurs when a party prematurely exits, locking the counterparty's assets until a timelock expires. Hedged Atomic Swaps mitigate griefing by introducing a penalty premium; however, they increase the number of transactions from four (as in Tier Nolan's swap) to six…

Secure and Scalable Blockchain Voting: A Comparative Framework and the Role of Large Language Models
Kiana Kiashemshaki, Elvis Nnaemeka Chukwuani, Mohammad Jalili Torkamani, Negin Mahmoudi
https://arxiv.org/abs/2508.05865

Secure and Scalable Blockchain Voting: A Comparative Framework and the Role of Large Language Models
Blockchain technology offers a promising foundation for modernizing E-Voting systems by enhancing transparency, decentralization, and security. Yet, real-world adoption remains limited due to persistent challenges such as scalability constraints, high computational demands, and complex privacy requirements. This paper presents a comparative framework for analyzing blockchain-based E-Voting architectures, consensus mechanisms, and cryptographic protocols. We examine the limitations of prevalent …