The aim of this research was to study the flood pulse influence and the anthropic impact caused by bauxite tailings on the chemical composition of O. glumaepatula in Batata lake (PA, Brazil). Sampling was carried out in stands of O. glumaepatula in the low-water, filling, high-water, and drawdown periods in impacted and natural areas of Batata lake. During the low-water and drawdown periods the...

Three important parameters in designing a closed die for forging process are ratio of width to flash thickness, ratio of  height to billet diameter and the friction factor. In this paper the influences of these parameters on the required force for the forging and percentage of die filling were investigated. It was found that by controlling the flash dimension, the material loss is reduced and t...

Efficient power and subchannel allocation methods are required for orthogonal frequency division multiple access (OFDMA) based femtocell networks to improve the capacity of the system. This paper considers a joint subchannel and power allocation algorithm with capacity maximization for downlink of an OFDMA based femtocell networks. In the proposed algorithm subchannel allocation is first perfor...

This paper investigates the capacity of an MIMO system over Two Wave Diffuse Power [TWDP] fading channels using well known water filling algorithm. The use of antenna arrays at transmitter and receiver sides of the wireless communication link (MIMO systems) can increase the channel capacity than the traditional single input single output [SISO] systems [9]-[15]. Here the channel capacity is stu...

Filling operations are procedures which are used in Discrete Tomography for the reconstruction of lattice sets having some convexity constraints. In [1], an algorithm which performs four of these filling operations has a time complexity of O(N logN), where N is the size of projections, and leads to a reconstruction algorithm for convex polyominoes running in O(N logN)-time. In this paper we fir...

[1] Due to the influence of evaporation on land-surface temperature, thermal remote sensing data provide valuable information regarding the surface moisture status. The Atmosphere-Land Exchange Inverse (ALEXI) model uses the morning surface temperature rise, as measured from a geostationary satellite platform, to deduce surface energy and water fluxes at 5–10 km resolution over the continental ...

Optimal transmit beamforming is obtained by minimizing the total network transmit power subject to a nodelevel channel capacity constraint. The algorithm that achieves this is referred to as locally enabled global optimization (LEGO)1 and is especially efficient for networks with reciprocal internode transmit and receive channel responses, typically realizable in time division duplex (TDD) netw...

The present study was carried out to estimate genetic variability parameters for some traits such as pods per plant, cell membrane stability, one thousand kernel weight, flowering period, grain filling period, chlorophyll content, relative water content, leaf excised water content, seed per pod and pod length, in 16 winter rapeseed genotypes. Statistical analysis showed significant differences ...

We consider a cognitive radio network in which a set of base stations make opportunistic spectrum access to support cognitive radios within their cells. As the spectrum of interest is licensed to the operator of a primary network, channel assignment and power control must be carried out in the cognitive network so that no excessive interference is caused to users of the primary network. Given t...