The aim of this work was to determine the structure of the benthic entomofauna and its variation along the El Tala River (Catamarca, Argentina). Five sampling stations were established, considering the location of nearby housing with respect to the watercourse. The following variables were determined in situ: altitude, latitude and longitude, bedstream width, river depth, river-current speed, w...

This article presents a nonlinear least square estimation method based on the continuous TEC values at single stations from long-time recorded dual-frequency GPS data of International GNSS Service (IGS) to facilitate single-station empirical total electron content (TEC) modelling. The Nonlinear Polynomial GPS-TEC Model (NPGTM) each four different (namely Ellesmere Island (alrt), Canada; Lhasa (...

We report on the development and validation of a neural network (NN) model of PM10 concentrations in terms of photochemical measurements of NO, NO2 and O3 and temporal parameters that include the day of the week and the day of the year with its sinusoidal variation. A long-term record (≈10 yr) from 2001–2012 (inclusive) assembled from measurements taken at 10 station nodes in the air quality mo...

With the rapid development of wireless cellular network, massive multiple input and multiple output (MIMO) and Small Cells (SCs) are both suitable candidates for the future fifth generation (5G) networks. Energy Efficiency (EE) has become increasingly concerned along with the two powerhungry candidates. This paper herein analyzed the energy efficiency of heterogeneous cellular network with mass...

This paper adopts Sharepower solar floating photovoltaic power station unit. The structure is simulated and analysed, the strength of a single support array rectangular square structures with different wind directions are analysed.

Ab.stritct-I n beyond 3G wireless systems the bandwidth efficiency can be increased with the use of adaptive antenna arrays. This paper focus on a key issue for adaptive antenna arrays, that is, channel parameters estimation including Direction-Of-Arrival (DOA). I n order to estimate DOA. the channel frequency responses for the links between the mobile users and each of base station array eleme...

In this paper, linear beamforming design for amplify-and-forward relaying cellular networks is considered, in which base station, relay station and mobile terminals are all equipped with multiple antennas. The design is based on minimum mean-square-error criterion, and both uplink and downlink scenarios are considered. It is found that the downlink and uplink beamforming design problems are in ...

L. K. Grover’s search algorithm in quantum computing gives an optimal, square-root speedup in the search for a single object in a large unsorted database. In this paper, we expound Grover’s algorithm in a Hilbert-space framework that isolates its geometrical essence, and we generalize it to the case where more than one object satisfies the search criterion. In memory of Daniel Walls 1. Departme...

In mobile communication systems with multisensor antennas at base stations, downlink channel estimation plays a key role because accurate channel estimates are needed for transmit beamforming. One efficient approach to this problem is channel probing with feedback. In this method, the base station array transmits probing (training) signals. The channel is then estimated from feedback reports pr...