The history and evolution of the Unix operating system is made available as a revision
management repository, covering the period from its inception in 1972 as a five thousand …

Tracking long-term progress in engineering and applied science allows us to take stock of
things we have achieved, appreciate the factors that led to them, and set realistic goals for …

Is the quality of existing code correlated with the quality of subsequent changes? According
to the (controversial) broken windows theory, which inspired this study, disorder sets …

Science has always progressed mightily through the use of tools. A key element for the
application of data science in software engineering is the availability of suitable tools. Such …

RESUMO A Engenharia de Software costuma desenvolver e indicar o uso de diferentes
ferramentas para construção de uma solução computacional. Além disso, um dos objetivos …

In this paper we study the evolution of C programming in the Unix operating system. We
extract, aggregate, and synthesize metrics from snapshots obtained from an artificial …