A posteriori error analysis of an augmented mixed finite element method for Darcy flow

We develop an a posteriori error analysis of residual type of a stabilized mixed finite element method for Darcy flow. The stabilized formulation is obtained by adding to the standard dual-mixed approach suitable residual type terms arising from Darcy's law and the mass conservation equation. We derive sufficient conditions on the stabilization parameters that guarantee that the augmented variational formulation and the corresponding Galerkin scheme are well-posed. Then, we obtain a simple a posteriori error estimator and prove that it is reliable and locally efficient. Finally, we provide several numerical experiments that illustrate the theoretical results and support the use of the corresponding adaptive algorithm in practice

Analysis of M2M Capabilities in 4G

M2M (Machine to Machine) communications enable many new applications that reduce the costs of maintenance and operation via remote monitoring and control. The forecasts for this type of communications predict traffic increases associated with these devices of about 100% in the coming years. However, the behaviour of M2M devices is different from the human user, which causes stress on the networks due to the overload of the signalling procedures. This paper reviews the literature on the current scenario, projections for the decade, and improvements that LTE (Long Term Evolution) will offer for this segment of devices.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Relevance of unilateral and bilateral sexual polyploidization in relation to intergenomic recombination and introgression in Lilium species hybrids

Sexual polyploids were induced in diploid (2n = 2x = 24) interspecific F1 hybrids of Longiflorum × Asiatic (LA) and Oriental × Asiatic (OA) Lilium hybrids by backcrossing to Asiatic (AA) parents as well as by sib-mating of the F1 LA hybrids. A majority of the BC1 progenies were triploid and the progenies from sib-mating were tetraploid or near tetraploids. Genomic in situ hybridization (GISH) technique was applied to assess the intergenomic recombination in the BC1 populations of LA and OA hybrids obtained after unilateral sexual polyploidization. A total of 63 LA (LA × AA and AA × LA) and 53 OA hybrids were analysed. LA hybrids were originated through the functioning of 2n gametes either as 2n eggs or 2n pollen while those of OA hybrids originated through functional 2n pollen of diploid OA genotype. In both type of crosses, a majority of the progenies had originated through First Division Restitution (FDR) mechanism of functional 2n gamete either with or without a cross over. However, there were nine LA- and four OA-genotypes where Indeterminate Meiotic Restitution (IMR) was the mechanism of 2n gamete formation. Based on GISH, total amount of introgression of Longiflorum and Oriental genome into Asiatic genome was determined. Most of the BC progenies exhibited recombination and the amount of recombination was higher in LA hybrids as compared to OA hybrids. Intergenomic recombination was also determined cytologically in the 16 plants of sib-mated LA hybrids where both parents had contributed 2n gametes. Based on these results the nature of interspecific lily hybrids obtained from uni- and bilateral sexual polyploidization leading to allotriploid and allotetraploid formation is discussed in the context of introgression and intergenomic recombinatio

The concept of traditionality for food products

Food companies often meet problems when they innovate on traditional products. The apprehension onconsumer‘s perception ofa food product‘s traditional character remains unclear despite the research conducted in marketing. The barriers to innovation for this type of product could be identified through the definition of traditionality perceived by the consumer. The purpose of this research is to define the concept of perceived traditionality one hand and, secondly, to distinguish the traditionality from other concepts such as typicality, authenticity or local produce. From a literature review conducted by systematic research on different databases, we propose a concept of traditionality. This concept of traditionality combines the ritual and the object The concept of traditionality for food products (PDF Download Available). Available from: https://www.researchgate.net/publication/291808708_The_concept_of_tradit... [accessed Mar 12 2018]

Doubly Periodic Instanton Zero Modes

Fermionic zero modes associated with doubly periodic SU(2) instantons of unit charge are considered. In cases where the action density exhibits two `instanton cores' the zero mode peaks on one of four line-segments joining the two constituents. Which of the four possibilities is realised depends on the fermionic boundary conditions; doubly periodic, doubly anti-periodic or mixed.Comment: 12 pages, 4 figure

Synthesizing attractors of Hindmarsh-Rose neuronal systems

In this paper a periodic parameter switching scheme is applied to the Hindmarsh-Rose neuronal system to synthesize certain attractors. Results show numerically, via computer graphic simulations, that the obtained synthesized attractor belongs to the class of all admissible attractors for the Hindmarsh-Rose neuronal system and matches the averaged attractor obtained with the control parameter replaced with the averaged switched parameter values. This feature allows us to imagine that living beings are able to maintain vital behavior while the control parameter switches so that their dynamical behavior is suitable for the given environment.Comment: published in Nonlinear Dynamic

Ketorolac, a new non-opioid analgesic: a single-blind trial versus buprenorphine in pain after orthopaedic surgery

A randomized single-blind, double-observer trial was performed to evaluate the efficacy of a new non-steroidal anti-inflammatory analgesic drug, ketorolac, in the treatment of post-orthopaedic surgery pain. Sixty patients with moderate to severe pain were studied; 30 patients were treated with ketorolac at a dose of 30 mg intramuscularly up to 4-times a day, whilst the other 30 patients received 0.3 mg buprenorphine intramuscularly up to 4-times a day. A significant reduction in the severity of the pain was recorded in both groups. Throughout the study, comparable efficacy was found between the two therapies although buprenorphine showed greater efficacy during the first 8 hours. Interestingly, the withdrawals due to adverse events were significantly less in the ketorolac group (p less than 0.001). This study, therefore, suggests that ketorolac may be a useful and more acceptable alternative to buprenorphine in the treatment of post-orthopaedic surgery pain

Adaptive algorithm for increasing image rejection ratio in Low-IF receivers

An adaptive method for compensating mismatch effect on an I/Q demodulation is presented. It is based on the correlation between the desired and image band that appears when there is a mismatch in any branch. The proposed algorithm is specially intended for narrowband low-IF receivers. No calibration source is neccesary. Up to 91 dB of image rejection ratio is achieved with narrow-bandwidth signals (up to 6.25% of the sampling frequency)