A Wideband Direct Data Domain Genetic Algorithm Beamforming

In this paper, a wideband direct data-domain genetic algorithm beamforming is presented. Received wideband signals are decomposed to a set of narrow sub-bands using fast Fourier transform. Each sub-band is transformed to a reference frequency using the steering vector transformation. So, narrowband approaches could be used for any of these sub-bands. Hence, the direct data-domain genetic algorithm beamforming can be used to form a single ‘hybrid’ beam pattern with sufficiently deep nulls in order to separate and reconstruct frequency components of the signal of interest efficiently. The proposed approach avoids most of drawbacks of already-existing statistical and gradient-based approaches since formation of a covariance matrix is not needed, and a genetic algorithm is used to solve the beamforming problem

Explaining Manipur’s breakdown and Mizoram’s peace: the state and identities in north east India

Material from North East India provides clues to explain both state breakdown as well as its avoidance. They point to the particular historical trajectory of interaction of state-making leaders and other social forces, and the divergent authority structure that took shape, as underpinning this difference. In Manipur, where social forces retained their authority, the state’s autonomy was compromised. This affected its capacity, including that to resolve group conflicts. Here powerful social forces politicized their narrow identities to capture state power, leading to competitive mobilisation and conflicts. State’s poor capacity has facilitated frequent breakdown in Manipur. In Mizoram, where state-making leaders managed to incorporate other social forces within their authority structure, state autonomy was enhanced. This has helped enhance state capacity and its ability to resolve conflicts. Crucial to this dynamic in Mizoram was the role of state-making leaders inventing and mobilising an overarching and inclusive identity to counter entrenched social forces. This has helped with social cohesion