With me, it happened in the beginning of the last decade (1990). When the post of editor of the unit's periodical became vacant, the Director, like most Directors, looked around him in search of his best friend or his worst enemy. He picked me for one of those two reasons, which one of them I have not found out. But it really does not make that much of a difference given the size of the problem...

Synchronous models are useful for designing real-time embedded systems because they provide timing control and deterministic concurrency. However, the semantics of such models usually require an entire system to be compiled at once to analyze the dependencies among modules. The alternative is to write modules that can respond when the values of some of their inputs are unknown, a tedious and er...

In This Issue In This Issue Wnt separate ways, met later embers of the Wnt family of secreted signaling proteins control a wide range of developmental and pathological processes, with each Wnt protein signaling through either the " canonical " or " noncanonical " pathway. Two papers in this issue (and a Comment on page 753) now bring these two pathways together, showing that the noncanonical ca...

Twelve unipolar manics satisfying the inclusion criteria of having had three episodes of mania without a depressive episode were compared against bipolar manics on clinical psychopathology, demographic variables and family history of psychiatric morbidity. We Found no differences between the two groups on any of the variables studied and concluded that unipolar mania is clinically homogenous wi...

Four decades after the civil rights revolution began with the Supreme Court’s unanimous 1954 school desegregation decision, Brown v. Board of Education, the Supreme Court reversed itself in the 1990s, authorizing school districts to return to segregated and unequal public schools.... The new policies refl ected the victory of the conservative movement that altered the federal courts and turned ...