This paper examines the beam-based minimum variance soft constraint beamformer and shows that the beamformer array gain is almost always a function of SNR. The analysis shows that the MVSC array gain is necessarily a nonincreasing function of SNR and, in fact, is either strictly decreasing or constant relative to SNR. This result supplements earlier results of Van Veen and helps explain behavio...

In van der Veen et al., [Struct. Dyn. 2, 024302 (2015)], femtosecond and nanosecond electron energy loss spectroscopy of deep core-levels are demonstrated. These results pave the way to the investigation of materials and molecules with combined energy, time, and spatial resolution in a transmission electron microscope. Furthermore, the authors elucidate the role of the electron phonon coupling ...

We also targeted emergent fauna for manipulation, choosing elimination over enhancement as a more practical manipulation. Treatments consisted of smoothing 4-m2 plots by hand and covering them with black plastic weighed down by rebar to smother the underlying fauna. Paired controls included smoothing and rebar, but no plastic. After about 3 d, the plastic was removed to monitor the effects of r...

Os basicamente idênticos trinta e sete painéis de azulejos no claustro São Francisco em Olinda, Pernambuco, convento Salvador, Bahia, compostos por inscriptiones picturae emblemas do livro Q. Horati Flacci Emblemata (1607), artista flamengo Otto van Veen (1556–1629), articulam uma compreensão tempo baseado neoestoicismo filósofo Justus Lipsius (1547-1606). Entretanto, o lema ou moto painel Temp...

The aliphatic hydrocarbon composition of sediments from Ceuta harbour, North Africa, was studied to determine the sources, levels and effects of these hydrocarbons on macrofauna composition by considering indices and concentration ratios in multivariate analyses. A total of 21 stations (15 inside and 6 outside the harbour) were sampled using a van Veen grab. High hydrocarbon concentrations (496...

OTTERSTEN, B., VIBERG, M., STOICA, P., and NEHORAI, A.: ‘Exact and large sample maximum likelihood techniques for parameter estimation and detection in array processing’ in HAYKIN, s., LITVA, J., and SHEPHERD, T. (Eds.): ‘Radar: Array Processing’ (Springer Verlag, Berlin, 1993) ch. 4, pp. 99-151 MARCOS, S. (Ed.): ‘Les mkthodes a haute resolution: traitement d’antenne et analyse spectrale’ (Herm...