Search results for "EMPHASIS"

Exploring FPGA‐Based Lock‐In Techniques for Brain  Monitoring Applications

2017

Functional near‐infrared spectroscopy (fNIRS) systems for e‐health applications usually suffer from poor signal detection, mainly due to a low end‐to‐end signal‐to‐noise ratio of the electronics chain. Lock‐in amplifiers (LIA) historically represent a powerful technique helping to improve performance in such circumstances. In this work a digital LIA system, based on a Zynq® field programmable gate array (FPGA) has been designed and implemented, in an attempt to explore if this technique might improve fNIRS system performance. More broadly, FPGA‐based solution flexibility has been investigated, with particular emphasis applied to digital filter parameters, needed in the digital LIA, and its …

New Developments in Corrole Chemistry: Special Emphasis on Face-to-Face Bismacrocycles

2003

Heavy ion SEE studies on 4-Gbit NAND-Flash memories

2007

Heavy ion SEE studies on three 4-Gbit NAND-flash memory types were performed at the RADEF facility at the University of Jyvaskyla, Finland with particular emphasis on SEFI differentiation. An error classification for complex memory devices is introduced, and respective cross sections are reported.

English Pronunciation Teaching: Four Case Studies from Finland

2012

The present study looks at how English pronunciation teaching practices are like in Finnish schools from the primary to upper secondary level; in particular, which methods are used and which items are emphasised. The study was carried out as focussed observations (Hopkins 2008, p. 89), as classroom observations were considered the best way to achieve the aim of this study. Four EFL teachers were each observed for 6–9 lessons within a period of one week. A pre-prepared observation form was used as a tool, and then developed into a categorisation of the teaching methods used by the observed teachers. As for the results, the teachers offered pronunciation teaching very different from each othe…

Presocratic discourse in poetry and prose: The case of Empedocles and Anaxagoras

2012

Abstract This paper explores the differences between poetry and prose in philosophical writing by examining two Pre-Socratic fragments, one in verse and one in prose, that express a very similar thought: Empedocles 59 B 17 Diels/Kranz and Anaxagoras 31 B 8 D./K. Although at first it might seem as though there is a simple division between Empedocles’ opaque and allusive hexameters and Anaxagoras’ sober prose, when we look in detail at the language used by the two authors, a close reading of the passages reveals a more complex picture. Both authors place rhetorical emphasis on their own role as innovator; Anaxagoras’ prose shows a careful attention to style and word choice no less than Empedo…

On the Strangeness of Pop Art Picturebooks: Pictures, Texts, Paratexts

2011

As a species of picturebook emerging around 1970, some Pop Art picturebooks were quite successful in their time, but appear strange from today's point of view. This strangeness has to do with multiple transgressions of traditional conventions restricting the notion of a “good” picturebook: transgressions regarding artistic style (influenced by the Pop Art movement), transgressions regarding the stories' content (with their emphasis on weird characters, surprising twists in narration and plot, and a fanciful combination of sceneries), and transgressions regarding the idea that politics and economic and social problems should be banned from picturebooks (displaying an anti-capitalist or anti-…

Performance and Implementation Modeling of Gated Linear Networks on FPGA for Lossless Image Compression

2020

Over recent years, imaging systems have seen explosive increase in resolution. These trends present a challenge for resource-constrained embedded imaging devices. Efficient image compression is essential to reduce bandwidth consumption and to increase the capability of on-board storage. Especially, for imaging systems where information loss is not allowed, for example, in medical, military and remote sensing imaging systems. This paper explores the use of Gated Linear Networks (GLNs) for development of embedded lossless compression systems. GLNs have proved themselves via PAQ archiver series, that have been ranked among the top across several lossless compression benchmarks. We propose an a…

Modelling and analysis of the influence of solar spectrum on the efficiency of photovoltaic modules

2021

Abstract The article presents the influence of changes in the solar radiation spectrum distribution on the properties of various photovoltaic modules, with particular emphasis on the scattered component. We compared the relative efficiency of the photovoltaic modules based on various semiconductor absorbers during bright and sunny, and cloudy summer days. Additionally, we presented the impact of the module tilt angle on the magnitude of the surface incident scattered component and on the efficiency of the module. The solar spectra for various weather conditions were estimated using specialised computer programmes,such as SolarSpectrum or SMARTS2, and we present here the validation results f…

Optimization of two-step batch processes and the method of compensation for random error

2012

This paper considers the problem of the optimal setting of controllable variables in two-step processes with quality constraints. The optimal setting minimizes the cost and satisfies quality constraints defined for the final output. The main emphasis is given to processes where it is possible to make intermediate measurements after the first processing step and to utilize these measurements before the control variables in the second step are set. Optimization based on this method of compensation for random error can yield substantially lower cost than does optimization based on a strategy where all variables are fixed before the process starts. An example of application of the method is tak…

2019

Imaging and non-imaging spectroscopy employed in the field and from aircraft is frequently used to assess biochemical, structural, and functional plant traits, as well as their dynamics in an environmental matrix. With the increasing availability of high-resolution spectroradiometers, it has become feasible to measure fine spectral features, such as those needed to estimate sun-induced chlorophyll fluorescence (F), which is a signal related to the photosynthetic process of plants. The measurement of F requires highly accurate and precise radiance measurements in combination with very sophisticated measurement protocols. Additionally, because F has a highly dynamic nature (compared with othe…