Sometimes they come back—the return of influenza

Sometimes they come back--the return of influenza.

They Always Come Back

As a result of personal experience on the staffs of Holloway Prison and of the Aylesbury Borstal Institution, the writer of this book can speak with some authority on the methods of treating women prisoners and delinquent girls as she found them to exist; from the knowledge gained by training as a Psychiatric Social Worker she has formed very definite convictions as to the much better methods w...

Will they come and will they stay?

Evolution: They Never Come Back, or Do They?

There is a notion in evolution that traits, once lost, cannot re-evolve. A new species of bone-eating worm defies this notion. Its males are free-living and look nothing like the dwarfed bags of sperm of its relatives.

Citation histories of papers: sometimes the rich get richer, sometimes they don't

We describe a simple model of how a publication’s citations change over time, based on pure-birth stochastic processes with a linear cumulative advantage effect. The model is applied to citation data from the Physical Review corpus provided by APS. Our model reveals that papers fall into three different clusters: papers that have rapid initial citations and ultimately high impact (fast-hi), fas...