Search results for " PPG"
showing 6 items of 6 documents
A preliminary investigation of the effect of contact pressure on the accuracy of heart rate monitoring by wearable PPG wrist band
2019
The increase of safety and health monitor of workers has become a crucial objective to prevent excessive physical workloads, injuries, accidents and errors. Heart rate (HR) is a very important physiological indicator which could properly describe the workers’ physical status. Recently, wearable photoplethysmographic (PPG) wristband trackers have been utilized to measure HR without hindering normal gesture of workers. However, the quality of PPG signals is highly affected by human physical motions, resulting in a poor reliable HR estimation. Specifically, during different activities and gestures, PPG sensor contact pressures may have an impact on the quality of the heart rate signal. To appr…
Ethical E-Participation
2015
The most recent forms of e-participation seem to provide new issues that need to be discussed. One such discussion involves the role of GIS. Can an ethically aware GIS be conceived? What does it mean for a GIS to be ethical at all? Throughout this paper, first the authors create a theoretical framework to encompass four key elements that lead us to the definition of ethical digital mapping: GIS ethics, social justice, power, and participation. Then they introduce the concept of PPGIS (Public Participation GIS), and argue that only a ‘qualitative turn' can enhance their importance in decision-making processes. Finally, the authors discuss an experiment that is currently taking place in Paler…
A study on the effect of contact pressure during physical activity on photoplethysmographic heart rate measurements
2020
Heart rate (HR) as an important physiological indicator could properly describe global subject&rsquo
STUDIO E VALIDAZIONE DI SISTEMI PER L’IDENTIFICAZIONE E IL MONITORAGGIO DI PARAMETRI BIOMEDICI ATTI ALLA PREVENZIONE DI EVENTI INDESIDERATI E ALL’ASS…
L’aumento delle patologie cronico-degenerative nella popolazione mondiale ha comportato un numero sempre maggiore di individui richiedenti assistenza sanitaria, generando, nell’ambito delle realtà ospedaliere, diverse problematiche relative al miglioramento della qualità di vita dei pazienti, ai costi e alla gestione di un numero sempre crescente di soggetti ammalati. Il trattamento sanitario e la ricerca di base si sono pertanto orientati verso la prevenzione delle condizioni che predispongono i soggetti ai peggioramenti clinici e ai ricoveri ospedalieri, puntando sia su nuovi sistemi indossabili di monitoraggio per individuare precocemente i segni di peggioramento, sia su sistemi che poss…
A novel multi-wavelength procedure for blood pressure estimation using opto-physiological sensor at peripheral arteries and capillaries
2018
© 2018 SPIE. In this study, the Carelight multi-wavelength opto-electronic patch sensor (OEPS) was adopted to assess the effectiveness of a new approach for estimating the systolic blood pressure (SBP) through the changes in the morphology of the OEPS signal. Specifically, the SBP was estimated by changing the pressure exerted on an inflatable cuff placed around the left upper arm. Pressure acquisitions were performed both with gold standard (i.e. electronic sphygmomanometer), and Carelight sensor (experimental procedure), on subjects from a multiethnic cohort (aged 28 ± 7). The OEPS sensor was applied together with a manual inflatable cuff, going slightly above the level of the SBP with in…
Ethical E-Participation
2014
The most recent forms of e-participation seem to provide new issues that need to be discussed. One such discussion involves the role of GIS. Can an ethically aware GIS be conceived? What does it mean for a GIS to be ethical at all? Throughout this paper, first the authors create a theoretical framework to encompass four key elements that lead us to the definition of ethical digital mapping: GIS ethics, social justice, power, and participation. Then they introduce the concept of PPGIS (Public Participation GIS), and argue that only a ‘qualitative turn' can enhance their importance in decision-making processes. Finally, the authors discuss an experiment that is currently taking place in Paler…