The exact likelihood function of a Gaussian vector autoregressive-moving average (VARMA) model is evaluated in two nonstandard cases: (a) a parsimonious structured form, such as obtained in the echelon form structure or the scalar component model (SCM) structure; (b) a partially nonstationary...

The Belgian nuclear phase-out law imposes closing down in the 2015-2025 period seven nuclear power plants (NPPs) producing more than 50% of the domestic electricity. This creates an urgent problem in the country because of the absence of well-defined capacity-replacement plans. Though a...

Domestic gardens can have both positive and negative effects on urban biodiversity conservation. We analyzed the flora of 1045 gardens in Bujumbura, Burundi. Among the 567 species identified in the gardens, 85% were not native. They originate mainly from tropical America (43%), tropical Asia...

This paper examines the sources of Europe's lagging business R&D performance relative to the US, particularly the role played by missing young leading innovators in high technology intensive sectors in Europe. It investigates through econometric analysis differences in the rates of return to R&D...

A 2-year demographic field study was carried out on the understorey tree Garcinia lucida in the humid Atlantic forests of South Cameroon. The bark and the seeds of the species are exploited for medicinal purposes and palm wine processing in West and Central Africa. The bark is often removed over...