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de Lima M.H.,Rua Edelberto de Oliveira | Keller D.,Federal University of Acre | Pimenta M.S.,Federal University of Rio Grande do Sul | Lazzarini V.,NUI Maynooth Co. | Miletto E.M.,IFRS
Journal of Music, Technology and Education | Year: 2012

This study is among the first that attempt to define a methodology for creativity-centred software design in educational contexts, more specifically for musical activities in ubiquitous settings. We propose and apply a set of design techniques - the Ubimus Planning and the Ubimus Design protocols - as alternatives to experimental procedures that leave out relevant aspects of social and procedural dimensions in educational research. Two workshops were conducted to assess both technological and domainspecific requirements for support of creative musical activities. The first workshop was conducted with music teachers and school teachers that had no formal musical training. The objective of this workshop was to assess domain-specific requirements for musical creative activities by educational staff. The second workshop focused on technological support for tool development by non-musicians. This workshop yielded two software projects that involved user evaluations of creative processes. Participants in the corresponding user studies included both musicians and non-musicians. The Ubimus Planning protocol served to raise important questions regarding technological usage by musicians and naive subjects in educational contexts. Non-technical approaches, such as those proposed by traditional soundscape activities, may not be suited for introducing non-musicians to sonic composition. Naive subjects may respond better to technologically based approaches, such as those used in ecocomposition. The Ubimus Design approach proved to be effective to test the usability of musical tools at early stages of development. Prototypes were implemented and usability studies were carried out by undergraduate IT students within a three-week time slot. Sharp differences were observed in the type of requirements expressed by musicians and non-musicians regarding creativity support tools. Nevertheless, both groups of subjects assessed the use of software prototypes within exploratory musical activities as being fun and expressive. © 2012 Intellect Ltd Article. Source


Santos F.M.,IFRS | Vargas L.,Embrapa Trigo | Christoffoleti P.J.,University of Sao Paulo | Agostinetto D.,Federal University of Pelotas | And 3 more authors.
Planta Daninha | Year: 2014

In the states of Rio Grande do Sul and Paraná, there are frequent reports of failure to control Conyza sumatrensis with chlorimuron-ethyl in soybean crops. Thus, the objectives of this study were to characterize Conyza sumatrensis leaves morphologically and evaluate herbicide control in biotypes of this weed at three stages. Two studies were conducted, with experiments in a greenhouse in a completely randomized design with four replications. In the first study, horseweed biotypes were collected and identified, and the second study evaluated the responses of herbicide rates and development stages. The herbicide rates were: 0.0, 6.25, 12.5, 25, 50, 100, 200 and 400, represented as a percentage of the dose registry of herbicides chlorimuron-ethyl (20 g ha-1) and glyphosate (720 g e.a. ha-1) applied in isolation or associated at three developmental stages of four Conyza sumatrensis (2, 5, 17 and 20) biotypes (height = 0.5-1 cm and 3-4 leaves, height = 1-2 cm and 6-7 leaves, height = 10-12 cm, 12-14 leaves). The variables analyzed were control, shoot dry weight and trichome and stomatal densities biotypes of the leaf surface at different stages of development. The results obtained demonstrate that the developmental stages affect the effectiveness of the herbicides, and applications at advanced stages of development decrease the effectiveness of control. The exception was biotype 5 of Conyza sumatrensis, which shows resistance to glyphosate, regardless of stage of development at the time of herbicide application. There was variation in the number of trichomes among biotypes at all stages of development, and the number of stomata decreased with the development of biotypes. Source


News Article
Site: http://www.materialstoday.com/news/

SLM Solutions Group AG, a provider of metal-based additive manufacturing technology, reports that it achieved significant sales revenue growth during the first nine months of 2015. Revenue (IFRS basis) of €33,925,000 during the first nine months of the year was significantly ahead of the revenue achieved in the prior-year period (€18,842,000), corresponding to a growth rate of 80%. In Q3, revenue amounted to €15,804,000, up by 97% compared with the revenue generated in the previous-year period (Q3/previous year: €8,012,000). Total operating revenue, which consists of sales revenue, the increase in inventories of finished goods and work in progress, and other work performed by the enterprise and capitalised, grew to €44,107,000 during the first nine months the year, thereby almost doubling year-on-year ‘The third quarter proved very gratifying, and reflected the continuation of the strong course of our year to date, said Uwe Bo¨gershausen, CFO of SLM Solutions. ‘We have relocated the production of our flagship model, the SLM 500HL, to a new workshop hall, and optimised the machine in technical terms.’ ‘We are drawing ever closer to our revenue target of at least €55 million for 2015,’ said Dr Markus Rechlin, CEO of SLM Solutions.’We consequently expect to reach the upper end of our guidance range of EUR 55 to 60 million, or even exceed it, by the year-end.’ This story is reprinted from material from SLM, with editorial changes made by Materials Today. The views expressed in this article do not necessarily represent those of Elsevier.


Serpa C.G.,University of Sao Paulo | Romeu M.A.R.,University of Sao Paulo | Fontoura J.A.S.,University of Sao Paulo | Calliari L.J.,Institute Oceanografia | And 2 more authors.
Journal of Coastal Research | Year: 2011

The washouts are water courses essential to the drainage of the water accumulated in the backshore zone, and are responsible for great ruptures in the dunes field. They supply the swash zone with large amounts of sediment. The study area is located a few kilometers south of the Patos Lagoon Inlet. This study measures the contribution of the wind, the waves, the atmospheric pressure and the tide on the elevation of the sea level in a period when the beach has suffered the impact of a storm surge. Field campaigns were performed in October and November of 2007. This data was combined with local wind and pressure data and modeled waves data from WAVEWATCH III, used by NOAA. The results showed that the southwest winds acting at the sea surface might be the main responsible for the abrupt elevation of the sea level during the period of study, because their capability of throwing sea water to the near shore by Ekman effect. However, the wave set up due to the high swell waves coming straight to the coast in the same time is a fundamental component in this elevation. In addition, there are evidences of a cyclone near the study area, which can explain some of the abnormalities studied in this work. The washout systems have been shown to be highly sensitive to this kind of storm surge, and all the sampled and modeled data suggest that the opening and closure of the washouts may occurs due to such phenomena. Source


Albuquerque M.G.,IFRS | Calliari L.J.,Institute Oceanografia | Guedes R.M.C.,University of Waikato | Paula D.P.,CIIMAR - Interdisciplinary Center of Marine and Environmental
Journal of Coastal Research | Year: 2011

High frequency monitoring aims at characterizing the changes that occur in beach environments and the mobility of sand bars near the coast. This study was carried out on the coast of Futuro Beach, Fortaleza (CE), in the northeast of Brazil. From June to July 2007, daily profiles of high frequency were carried out for 30 days in a row in order to characterize the position and migration pattern of the sand bars in an environment of sediments with different modal classes. The morphodynamics of the beach was characterized according to the conceptual model proposed by Masselink and Short (1993) to classify the effects of tides in beach morphology. For this study, video images were also collected to assess sand bars in the area. The video-imagery data showed that there are two sand bars on that beach: one of them, which emerges at the low tide, is located near the coast in the intertidal zone and the other one, which is constantly submerged, is located farther from the coast. The width of the beach profiles varied between 80 m and 137 m with average migration of sand bars of 4.08 m/day. The surveys also enabled to verify that the average value of the sand bar migration was 4.64 m/day at three monitoring points. Taking into account that the causes of the migration processes and the behavior of sand bars are not fully understood yet, studies of changes registered in beach profiles, such as the migration rates of sand bars in the surf zone, are important to comprehend these phenomena and to select the best monitoring frequency. Source

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