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First the authors tried to find the best parameters for the neural network classification of our data, obtaining an overall classification of around 80% for eleven standardized postures. Those neural networks were then exported to a mobile application to achieve a real-time classification of the standardized postures. Results showed a real-time classification of 93.4% for eight standardized postures, even for users that experimented for the first-time our intelligent chair. Using the same mobile application they devised and implemented two correction algorithms, acting due to conformation change of the bladders in the chair's seat when a poor seating posture is detected for certain periods of time.<\/p>","DOI":"10.4018\/ijsda.2014040105","type":"journal-article","created":{"date-parts":[[2014,9,15]],"date-time":"2014-09-15T12:28:58Z","timestamp":1410784138000},"page":"65-80","source":"Crossref","is-referenced-by-count":3,"title":["Intelligent Chair Sensor"],"prefix":"10.4018","volume":"3","author":[{"given":"Leonardo","family":"Martins","sequence":"first","affiliation":[{"name":"Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal"}]},{"given":"Rui","family":"Lucena","sequence":"additional","affiliation":[{"name":"Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal"}]},{"given":"Rui","family":"Almeida","sequence":"additional","affiliation":[{"name":"Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal"}]},{"given":"Jo\u00e3o","family":"Belo","sequence":"additional","affiliation":[{"name":"Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal"}]},{"given":"Cl\u00e1udia","family":"Quaresma","sequence":"additional","affiliation":[{"name":"Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal & Departamento de Sa\u00fade, Instituto Polit\u00e9cnico de Beja, Beja, Portugal"}]},{"given":"Adelaide","family":"Jesus","sequence":"additional","affiliation":[{"name":"Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal"}]},{"given":"Pedro","family":"Vieira","sequence":"additional","affiliation":[{"name":"Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal"}]}],"member":"2432","reference":[{"key":"ijsda.2014040105-0","doi-asserted-by":"publisher","DOI":"10.1007\/s00586-006-0269-7"},{"key":"ijsda.2014040105-1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ypmed.2010.08.012"},{"key":"ijsda.2014040105-2","doi-asserted-by":"publisher","DOI":"10.1016\/j.math.2008.06.001"},{"key":"ijsda.2014040105-3","unstructured":"DHHS - NIOSH. 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