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The appetite amongst consumers for ever higher data-rates seems insatiable. This booming market presents a huge opportunity for telephone and cable operators. It also presents a challenge: the delivery of broadband services to millions of customers across sparsely populated areas. Fully fibre-based networks, whilst technically the most advanced solution,(More)
Acipenseriformes are composed of 25 sturgeon species and two paddlefish species distributed exclusively in the northern hemisphere. The Danube River and the Black Sea were originally inhabited by six sturgeon species but two are extinct and only four are still reproducing currently in the Lower Danube: Huso huso, Acipenser stellatus, A. gueldenstaedtii and(More)
In this paper we investigate power allocation and crosstalk cancellation for MIMO-DSL (a.k.a. bonded-DSL) systems. Exploiting a property of the DSL channel, namely columnwise diagonal dominance, allows us to simplify the power allocation and crosstalk cancellation problems. This leads to a significant reduction in initialisation and run-time complexity(More)
DSM (Dynamic Spectrum Management) consists of a set of techniques that basically allow a DSL modem to adapt its transmit spectra according to the noise on the line, instead of using a fixed mask. There are several algorithms that perform DSM, and this contribution will refer to the well-known “Iterative Water-Filling” (IWF), The T1E1.4 group(More)
Sturgeon populations in the Danube River have experienced severe decline during the last several decades, mostly due to the poorly regulated fishery, river fragmentation and water pollution. This study focuses on gaining better understanding of sturgeon life history primarily by addressing the assessment of microelement accumulation in sturgeon pectoral fin(More)
This paper presents a firefly-based method for business process optimization. Each artificial firefly has a candidate business process associated which is modeled as a causal matrix. The evolution of a candidate business process is achieved using genetic operators which aim to perform structural and resource allocation modifications. To establish whether a(More)
Common names: stellate sturgeon, sevruga (E) Sternhausen, sterntor (G) Sevryuga (Ru). Conservation status: Endangered under IUCN (1996) and Appendix II of CITES. Identification: D 40– 54, A 22 – 35 rays, dorsal scutes 9 – 16, lateral scutes 26 – 43, and ventral scutes 9 – 14 (Berg 1948; Hochleichner 1999). Body streamlined and elongated with cross section(More)
The stellate sturgeon, Acipenser stellatus, is a critically endangered fish species. Knowledge on its genetic diversity and population structure is urgently needed to enable the identification of management units in order to prevent extinction. Therefore, 18 species-specific, polymorphic microsatellite loci have been isolated using GS-FLX Titanium(More)
The IEEE 754 Floating point standard [1] specifies a simple (32 bits) and double precision (64 bits). For the FFT block in a DSL modem (DMT based), even 32 bits proves to be too much, and a custom number of bits can be used. This in turn will lead to savings in area and power on the ASIC implementation. Several techniques were considered for reducing the(More)
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