Emergency Coins of Stone Ware

Twinkle twinkle little stone: utilizing color Doppler in emergency ultrasound diagnosis of a ureterovesicular stone

Case report A case of a 43-year-old woman presenting with acute left flank pain is reported. Method and result Point-of-care ultrasound utilizing color Doppler revealed a twinkling artifact at the left ureterovesicular junction, consistent with a ureterovesicular stone. The sonographic findings and significance of the twinkling artifact are described.

Overview of Colored Coins

Bitcoin ([3]) is the world’s first decentralized digital currency, allowing the easy storage and transfer of cryptographic tokens. It uses a peer-to-peer network to carry information, hashing as a synchronization signal to prevent double-spending, and a powerful scripting system to determine ownership of the tokens. There is a growing technology and business infrastructure supporting it. By the...

James P. Ware, Principal

Database Component Ware

Database modeling is still a job of an artisan. Due to this approach database schemata evolve by growth without any evolution plan. Finally, they cannot be examined, surveyed, consistently extended or analyzed. Querying and maintenance become very difficult. Distribution of database fragments becomes a performance bottleneck. Currently, databases evolve to huge databases. Their development must...

Moving coins

We consider combinatorial and computational issues that are related to the problem of moving coins from one configuration to another. Coins are defined as non-overlapping discs, and moves are defined as collision free translations, all in the Euclidean plane. We obtain combinatorial bounds on the number of moves that are necessary and/or sufficient to move coins from one configuration to anothe...