apology, under erasure

Apology

On the Erasure Recoverabi under Concurrent

We consider a fault-tolerant distributed storage system that protects data on k disks using a systematic linear (n, k) MDS code. In such a system, updates to data blocks require corresponding updates to check blocks. Concurrent fault-prone access by multiple writers can drive the system into an inconsistent state with reduced tolerance for disk failures. We show tight bounds on the erasure reco...

An Apology

The Apology

This is the second issue featuring a selected piece from the Yale Internal Medicine Residency Program's Writers' Workshop. The annual workshop began in 2003. Abraham Verghese and Richard Selzer, among the best known physician-writers in the United States, have served as workshop leaders, teaching the craft of writing to more than 35 residents. In designing the workshop, Anna B. Reisman, assista...

Greenpeace Apology

Background. Mitochondrial DNA (mtDNA) variation in single hematopoietic cells, muscle fibers, oocytes, and from tiny amount of tumor tissues and degraded clinical specimens has been reported in many medical publications. External DNA contamination, notoriously difficult to avoid, threatens the integrity of such studies. Methodology/Principal Findings. Employing a phylogenetic approach, we analy...