110 research outputs found
Vergelijking en implementatie van digitale signaalbewerkingstechnieken bij communicatie via leds
No full textBAPElectrical EngineeringElectrical Engineering, Mathematics and Computer Scienc
The Pig Cough Monitor in the EU-PLF project: results and multimodal data analysis in two case studies
No full textPrecision Livestock Farming (PLF) combines the principles of process control technology with animal sciences. An example of PLF is the Pig Cough Monitor (PCM), which performs a continuous automated measurement of porcine respiratory health through sound analysis. This paper provides results and a thorough analysis of the data obtained in the course of the FP7 EU-PLF project. Earlier work has demonstrated the effectiveness of the PCM in a real-world farm setting. This paper reports on 2 new case studies, again using the cough index as a principal measure. Additionally, the heat map is introduced as a new visualisation approach of cough behaviour. The heat map shows the course of cough throughout the day. Additional sources of metadata such as the corresponding slaughterhouse data are also included. For both cases discussed in this paper, anomalies in the respiratory health are apparent from the cough index representations
Uyt Ionsten versaemt. Het Landjuweel van 1561 te Antwerpen. Inleiding D. Coigneau. Catalogus Elly Cockx-Indestege en W. Waterschoot, Brussel, Kon. Bibliotheek Albert I, 1994, 204 p.
No full textComputational Analysis of a Fast Algorithm for High-order Sparse Linear Prediction
No full textsponsorship: The work of T. L. Jensen is supported by The Danish Council for Independent Research, Technology and Production Sciences, grant number 4005-00122. The work of T. van Waterschoot is supported by the KU Leuven Impulse Fund, grant number IMP/14/037. (Danish Council for Independent Research, Technology and Production Sciences|4005-00122, KU Leuven Impulse Fund|IMP/14/037)status: Publishe
Het ontwerp van een optisch draadloos zendsysteem met witte leds
No full textIn dit ontwerprapport wordt een systeem ontworpen dat via ledverlichting in een warenhuis elektronische prijskaartjes aanstuurt. De informatie die op het display van elk kaartje moet verschijnen, wordt onzichtbaar voor het oog gecodeerd in het uitgestuurde licht. Het ontwerp bestaat uit een enkele zender, namelijk de ledverlichting van een warenhuis, die uniform en simultaan dezelfde informatie uitzendt, en meervoudige ontvangers, namelijk alle prijskaartjes die informatie op het display afbeelden die uniek is per prijskaartje. In deze thesis wordt de zenderkant van het systeem ontworpen, die bestaat uit een centrale terminal vanwaar de data worden verstuurd naar een Power Line Carrier Modem (PLCM) die de data superponeert op het lichtnet. Bij de aansluitklemmen van de verlichting worden de data met een tweede PLCM van het lichtnet gehaald en gebruikt om een elektronische schakeling aan te sturen die de ledverlichting van stroom voorziet.MicroelectronicsElectrical Engineering, Mathematics and Computer Scienc
Het ontwerp van Smart Shelf Labels voor LEDSpeak
No full textLeds zorgen voor een revolutie op het gebied van verlichting. Vergeleken met gloeilampen zijn ze meer energiezuinig en kunnen ze sneller schakelen. Dat maakt energie-efficiënte lichtcommunicatie mogelijk. Het onderwerp van ons onderzoek is “communicatie via leds”. Wij passen dit toe in de automatisering van prijsaanduidingen in warenhuizen, door middel van elektronische prijskaartjes (Smart Shelf Labels, SSLs). Het doel van dit verslag is het presenteren van een ontwerp van een ontvanger voor communicatie via leds, in de vorm van een SSL.Circuits and SystemsMicroelectronics & Computer EngineeringElectrical Engineering, Mathematics and Computer Scienc
Calculating Argument Diversity in Online Threads
No full textWe propose a method for estimating argument diversity and interactivity in online discussion threads. Using a case study on the subject of Black Pete ("Zwarte Piet") in the Netherlands, the approach for automatic detection of echo chambers is presented. Dynamic thread scoring calculates the status of the discussion on the thread level, while individual messages receive a contribution score reflecting the extent to which the post contributed to the overall interactivity in the thread. We obtain platform-specific results. Gab hosts only echo chambers, while the majority of Reddit threads are balanced in terms of perspectives. Twitter threads cover the whole spectrum of interactivity. While the results based on the case study mirror previous research, this calculation is only the first step towards better understanding and automatic detection of echo effects in online discussions
Jan van den Dale 'eenen vermaerden-retoricien'
No full text'De Uure van der doot', a poem by Jan van den Dale (dagger 1522), reflects the anxiety of the author before the sudden apparition of Death. It belongs to the late medieval momento mori-tradition, and has its roots in biblical and liturgical texts, whereas the supposed influence of French-Burgundian literature proves to be minimal. Van den Dale demonstrates his literary skill by using a variety of rime-patterns
Automatic cough detection for bovine respiratory disease in a calf house
No full textIn calf rearing, bovine respiratory disease (BRD) is a major animal health challenge. Farmers
incur severe economic losses due to BRD. Additional to economic costs, outbreaks of BRD
impair the welfare of the animal and extra expertise and labour are needed to treat and care
for the infected animals. Coughing is recognised as a clinical manifestation of BRD. Therefore,
the monitoring of coughing in a calf house has the potential to detect cases of respiratory
infection before they become too severe, and thus to limit the impact of BRD on both
the farmer and the animal. The objective of this study was to develop an algorithm for
detection of coughing sounds in a calf house. Sounds were recorded in four adjacent compartments
of one calf house over two time periods (82 and 96 days). There were approximately
21 and 14 calves in each compartment over the two time-periods, respectively. The
algorithm was developed using 445 min of sound data. These data contained 664 different
cough references, which were labelled by a human expert. It was found that, during the first
time period in all 3 of the compartments and during the second period in 2 out of 4 compartments,
the algorithm worked very well (precision higher than 80%), while in the 2 other
cases the algorithm worked well but the precision was less (66.6% and 53.8%). A relation
between the number of calves diagnosed with BRD and the detected coughs is shown
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