Appraisal of open software for finite element simulation of 2D metal sheet laser cut.

FEA simulation of thermal metal cutting is central to interactive design and manufacturing. It is therefore relevant to assess the applicability of FEA open software to simulate 2D heat transfer in metal sheet laser cuts. Application of open source code (e.g. FreeFem++, FEniCS, MOOSE) makes possible additional scenarios (e.g. parallel, CUDA, etc.), with lower costs. However, a precise assessment is required on the scenarios in which open software can be a sound alternative to a commercial one. This article contributes in this regard, by presenting a comparison of the aforementioned freeware FEM software for the simulation of heat transfer in thin (i.e. 2D) sheets, subject to a gliding laser point source. We use the commercial ABAQUS software as the reference to compare such open software. A convective linear thin sheet heat transfer model, with and without material removal is used. This article does not intend a full design of computer experiments. Our partial assessment shows that the thin sheet approximation turns to be adequate in terms of the relative error for linear alumina sheets. Under mesh resolutions better than 10e−5 m , the open and reference software temperature differ in at most 1 % of the temperature prediction. Ongoing work includes adaptive re-meshing, nonlinearities, sheet stress analysis and Mach (also called ‘relativistic’) effects

A new species, (Orobanche loscosii), a prioritary name for O. Icterica (O. Leptantha) and a new member of the Spanish Flora (O. Elatior)

A la luz de recientes investigaciones que han sinonimizado a Orobanche kochii F.W. Schultz (una bien caracterizada especie de la mitad sureste europea principalmente parásita de Centaurea y frecuentemente confundida con O. elatior Sutton) las plantas parásitas de Echinops que se habían descrito de Francia y Serbia, reconsideramos el status taxonómico de la parásita de Echinops del valle del Ebro y concluimos que es preciso describirla como especie nueva. De paso, probamos que O. leptantha Pomel es un nombre prioritario para la especie para la que Pau acuñó el binomen O. icterica, vicariante de O. elatior muy extendida en España, y confirmamos la existencia de la propia O. elatior en España.In the light of recent research that has synonymized the parasites of Echinops described from France and Serbia to Orobanche kochii F.W. Schultz (a distinct southeastern European species, mainly parasitic on Centaurea and often confounded with O. elatior Sutton), we reassess the taxonomic status of the Echinops parasite from the Ebro basin and conclude that it must be described as a new species. By the way, we demonstrate that O. leptantha Pomel is a prioritary name for the species for which Pau coined the binomen O. icterica, a vicariant of O. elatior widespread in Spain, and we confirm the existence of the true O. elatior in Spain

The overlooked Orobanche balsensis (J.A. Guim.) comb. nov., and some remarks on O. subbaetica Triano & Pujadas

En este trabajo se dan pruebas de la pertinencia del rango específico para un taxon desatendido de Orobanche s. str. en el que coinciden todo un conjunto de caracteres morfológicos y un hospedante propio (Carlina). Puesto que J. A. Guimarães ya le había dado nombre válido en los rangos varietal y subvarietal, no es preciso describirlo como nuevo, y aquí tan solo se lo tipifica, se lo eleva al rango de especie, se lo describe en detalle, se lo ilustra con dibujos y fotografías en color y se muestra que su área de distribución rebasa la terra classica y se extiende, no solo por España y Portugal, sino muy probablemente por el sur de Francia, Córcega y Sicilia. Además, se hacen algunas adiciones morfológicas, corológicas e iconográficas al conocimiento de la recién descrita Orobanche subbaetica.In this paper a neglected taxon of Orobanche s. str. is shown to deserve specific rank for combining a set of correlated morphological features and a particular host (Carlina). As it had already been validly named at varietal and subvarietal rank by J. A. Guimarães it needn’t be validly described, but is here typified, raised to the rank of species, thoroughly described, illustrated with detailed drawings and colour photographs and demonstrated to occur well beyond its terra classica not only in Portugal and Spain, but probably also in southern France, Corsica and Sicily. In addition, some morphological, chorological and iconographical additions to the knowledge of the recently described Orobanche subbaetica will be done

Phelipanche cernua Pomel (Orobanchaceae), a prioritary name for the western mediterranean species recently redescribed as Ph. inexpectata

The specific parasite of Lactuca (Compositae) described in 2005 from the Iberian Peninsula as Phelipanche inexspectata (Orobanchaceae) and known so far in northeastern Spain and southern France, is shown to also occur in mountain areas of northern Africa, where it had been previously described under the neglected name Phelipanche cernua. Given the recent proposal to consider the aforementioned Lactuca parasite a mere variant of Phelipanche schultzii, we stress the neat differences between both species

What is and What is understood by Orobanche foetida Poir., Voy. Barbarie 2: 195[-196] (1789)?

Tras un detenido estudio de su protólogo y lectótipo, se concluye que Orobanche foetida Poir. (1789) es un sinónimo prioritario de Orobanche variegata Wallr. (1825) y no puede usarse para la especie del Mediterráneo occidental a la que en los últimos tiempos venía por lo general aplicándosele. Mientras la conservación en ese uso del binomen Orobanche foetida no sea propuesta y aprobada, esa especie ibérica y norteafricana debe llamarse Orobanche hookeriana Ball.After carefully reviewing its protologue and lectotype, it is concluded that Orobanche foetida Poir. (1789) is an earlier synonym of Orobanche variegata Wallr. (1825) and cannot be used for the western Mediterranean species to which in recent times it has been generally applied. Unless the conservation of that concept of the binomen Orobanche foetida is proposed and approved, that Iberian and North African plant must be called Orobanche hookeriana Ball

Visualisation of flow fields in the web platform

Visualization of vector fields plays an important role in research activities nowadays. Web applications allow a fast, multi-platform and multi-device access to data, which results in the need of optimized applications to be implemented in both high and low-performance devices. The computation of trajectories usually repeats calculations due to the fact that several points might lie over the same trajectory. This paper presents a new methodology to calculate point trajectories over a highly-dense and uniformly-distributed grid of points in which the trajectories are forced to lie over the points in the grid. Its advantages rely on a highly parallel computing implementation and in the reduction of the computational effort to calculate the stream paths since unnecessary calculations are avoided by reusing data through iterations. As case study, the visualization of oceanic streams in the web platform is presented and analyzed, using WebGL as the parallel computing architecture and the rendering engine

MOBILE APPLICATION WITH AUGMENTED REALITY FOR THE TOURIST EXPERIENCE: A CASE STUDY IN THE DISTRICT OF CASA GRANDE, PERUVIAN NORTH COAST

When visiting the Casa Grande District, tourists arrive at the Main Square, from where they see around them many buildings to which they only take pictures and then leave, but they do not know about the history and value that each of them represents. Thus, the objective of this research is to value the diverse architectural heritage that the Casa Grande District has and at the same time improve the tourist experience, through the use of a Mobile Application with Augmented Reality. To carry out the experimental research, the agile Mobile-D methodology was used, which has 5 phases: Exploration, Initiation, Production, Stabilization and Testing;  in the Research Design, two groups were used:  Experimental Group (Ge) and Control  Group (Gc), while Student's t-test was used to validate the hypotheses.  Finally, the results revealed that the Mobile Application with augmented reality presented better results in the Ge with respect to the Gc in each of the indicators: time and cost of access to information, the number of visits and the satisfaction of tourists

Orobanche centaurina Bertol. the correct name for O. kochii F.W. Schultz (Orobanchaceae)

Después de estudiar el material original de Orobanche centaurina Bertol. (Orobanchaceae) depositado en BOLO, una olvidada especie descrita de Massa (Italia central) parásita de Centaurea paniculata L., y compararlo con el tipo de O. kochii F.W. Schultz y con los tipos de otros táxones actualmente considerados inónimos de éste, estimamos que el nombre de Bertoloni es el correcto y prioritario para esta especi

Olanzapine compared to quetiapine in adolescents with a first psychotic episode

Objective: To compare the efficacy, safety, and tolerability of olanzapine and quetiapine in adolescents with first episode psychosis. Method: Fifty adolescents (age 16 ± 1.25) with a first episode of psychosis were randomized to quetiapine or olanzapine in a 6-month open label study. Efficacy and side effect scales, as well as vital signs and laboratory data were recorded at baseline, 7, 15, 30, 90, and 180 days (end of study). Results: Out of the total sample included in the study, 32 patients completed the trial (quetiapine n = 16, olanzapine n = 16). Patients in both treatment groups had a significant reduction in all clinical scales with the exception of the negative scale of the Positive and Negative Symptom Scale (PANSS) for olanzapine and the general psychopathology scale of the PANSS for quetiapine. The only difference between treatment arms on the clinical scales was observed on the patients' strength and difficulties questionnaire (SDQ) scale, with greater improvement for olanzapine. Patients on olanzapine gained 15.5 kg and patients on quetiapine gained 5.5 kg. Conclusion: Olanzapine and quetiapine reduced psychotic symptoms in this adolescent sample. Patients on olanzapine gained significantly more weight. Side effects with both drugs seemed to be more prevalent than those reported in adult studies

Long-Term Visual Outcome in Wet Age-Related Macular Degeneration Patients Depending on the Number of Ranibizumab Injections

Purpose. To analyse the visual outcome in wet age-related macular degeneration (AMD) patients depending on the number of ranibizumab injections. Methods. 51 naïve wet AMD patients were retrospectively recorded. Visual acuity (VA), central retinal thickness (CRT) measured with spectral domain (SD) optical coherence tomography (OCT), and number of intravitreal injections were compared at 6, 12, 18, 24, 30, and 36 months of follow-up. Kaplan-Meier survival rates (SRs) based on VA outcomes were calculated depending on the number of ranibizumab injections performed. Results. VA improved compared with baseline at 6 and 12 months (P<0.005). No differences were found at 18, 24, 30, and 36 months (P>0.05). CRT measured with Cirrus OCT decreased (P<0.001) at all time points analysed. The mean number of injections received was 6.98±3.69. At 36 months, Kaplan-Meier SR was 76.5% (the proportion of patients without a decrease in vision of more than 0.3 logMAR units). VA remained stable (≤0.01 logMAR units) or improved in 62.7%. Within this group, SR was 92.9% in those who received 7 or more injections versus 51.4% receiving <7 treatments (P=0.008; log-rank test). Conclusion. Better VA outcomes were found in stable wet AMD patients after 3 years of follow-up if they received ≥7 ranibizumab injections