We study the control of modulational instability and pattern formation in a nonlinear dissipative feedback system with a periodic modulation of the material refractive index. We use a one-dimensional photonic lattice in a single-mirror feedback configuration and identify three mechanisms for pattern control: bandgap suppression of instability modes, periodicity induced pattern modes, and orient...

We present some numerical results obtained from a simple individual-based model that describes clustering of organisms caused by competition. Our aim is to show that, even when a deterministic description developed for continuum models predicts no pattern formation, an individual-based model displays well-defined patterns, as a consequence of fluctuation effects caused by the discrete nature of...

classifying remote sensing imageries to obtain reliable and accurate landuse/cover (luc) information still remains a challenge that depends on many factors suchas complexity of landscape especially in arid region. the aim of this paper is to extractreliable luc information from land sat imageries of the pishkouh watershed of centralarid region, iran. the classical maximum likelihood classifier ...

Abstract We study U.S. banks’ payout policy in 2007–2008. benchmark these payouts against before the crisis, measure stock price reactions to announcements of dividend changes, and analyze changes relation between growth future performance. Further, we examine cross-sectional variation gauge possible motives underlying decisions do not find that banks have a higher willingness take risk or ince...

Abstract We quantify the surface elevation changes along Yala Glacier in Langtang Valley, Nepal Himalaya, since 1981 using geodetic methods to understand recent evolution and current state of small debris-free glaciers across region. analyse differential global positioning system measurements aerial stereo imagery that were acquired 2007, 2009, 2012 2015 generate digital models for each calcula...