Aerojeller bilim dünyasına girişleri ile çığır açan bilinen en hafif katı maddelerdir. Hafiflik özelliğinin yanı sıra birçok önemli özelliği bir arada taşımaktadırlar. Nano gözeneklere sahip olmaları ısı yalıtımı, ses yalıtımı ve düşük dielektrik katsayısı gibi oldukça avantajlar sağlamaktadır. Dünya çapında pazar payı her geçen gün artan aerojellerin üretimi de artmaktadır. Farklı üretim param...

We generated networks of journal relationships from citation and download data, and determined journal impact rankings from these networks using a set of social network centrality metrics. The resulting journal impact rankings were compared to the ISI IF. Results indicate that, although social network metrics and ISI IF rankings deviate moderately for citation-based journal networks, they diffe...

Bit error rate computation for optical communication systems incorporating equal­ izers and under both noise and intersymbol interference (ISI) is discussed. An ac­ curate method based on a saddlepoint approximation is used for the computation. Previous work based on saddlepoint approximation has considered only the use of ba­ sic integration-and-dump detection. When ISI is strong, this simple ...

If we observe an ambiguous figure, our percept is unstable and alternates between the possible interpretations. Periodically interrupting the presentation sizably modulates the spontaneous reversal rate. We here studied event-related potential (ERP) correlates of the neural processes underlying these strong modulations. An ambiguous Necker stimulus was presented discontinuously with four random...

A novel class of ISI-free pluses is presented. We propose a class of new Nyquist pulses that shows comparable or better ISI performance in the presence of sampling errors, as compared with some recently proposed pulses.