Search results for "BED"
showing 10 items of 1605 documents
Measurements of cardiac Pre-Ejection period using a combo PPG-ECG system
2015
The extraction of biomedical parameters, for early disease detection, is assuming today an ever increasing and fundamental importance. In particular, in the cardiologic field, the preejection period (PEP) is the duration of the iso-volumetric left ventricle contraction until the aortic valve opening. This parameter is a non-constant additive delay, which rapidly changes in response to stress, emotion and physical effort. To estimate this period, several wearable electronics devices have been developed in literature, and among them the Impedance Cardiogram equipment is the most used. However, these systems are often expensive and bulky. In this paper, we propose a cost-effective and easy to …
Design and development of a continuous wave functional near infrared spectroscopy system
2014
Functional Near InfraRed Spectroscopy uses light sources and optical detectors for human brain monitoring. In this paper, a portable, low cost, battery-operated, multi-channel, continuous wave fNIRS embedded system, hosting up to 64 LED sources and 128 Silicon PhotoMultiplier optical detectors, is reported on. The designed system is based on a scalable architecture, in which each probe consists of 8 modular and flexible stands, able to host 4 bi-color LEDs as light sources, 16 silicon photomultipliers as photodetectors and a temperature sensor. The hardware structure allows to easily set up several relevant parameters: the timing of the LEDs, the optical power emitted by the LEDs; the acqui…
Design of a Multichannel Continuous Wave fNIRS System implemented with SiPM
2013
Development of a CW-fNIRS System for brain monitoring
2014
Blood Pressure Monitoring with a PPG Embedded System
2014
Progettazione e realizzazione di un sistema Continuous Wave fNIRS basato su tecnologia SiPM
2014
Progettazione e realizzazione di un sistema Continuous Wave fNIRS basato su tecnologia SiPM
Optical techniques represent a suitable tool for in vivo and non-invasive diagnosis of human brain and tissues. Functional Near InfraRed Spectroscopy (fNIRS) is revealing as an emerging neuroimaging technology, since it is safe, relatively inexpensive and little cumbersome. fNIRS relies on the measurement of the oxygen concentration in the blood by means of light beams impinging on the tissues under test. Haemoglobin concentration variations (oxygenated/deoxygenated) can provide very important information on brain activity and allow to discriminate the main brain area involved during tests. Herein, we present the design and development of an innovative solution for a portable continuous wav…
Ierīču barošanas kontrollera programmatūras izstrāde
2015
Barošanas kontrolleris ir autonoma sistēma, kas kontrolē pieslēgto ierīču, strāvas padevi un saglabā datus par ierīču stāvokli. Priekš paplašinātas funkcionalitātes ir paredzēts, ka lietotājs var savienot ierīces ar Barošanas kontrolleri caur Ethernet tīklu. Lietotājam tiek dotas 3 iespējas vadīt sistēmu: pieslēdzoties caur pārlūkprogrammu sistēmai un izmantojot tīmekļa pārlūka interfeisu, izmantojot mazākas funkcionalitātes skārienjūtīgo ekrānu, kas pieslēgts sistēmai, izmantojot tiešo pieeju pie ierīces kā piemēram: ssh, ftp utt, lai mainītu sistēmas noklusētos iestatījumus.
Embedded-atom calculations of Auger and x-ray photoemission shifts for metallic elements
1982
Change in self-consistent-field energy density-functional calculations are reported for Auger and core-level binding-energy shifts in sp-bonded metals. The basic model, atom in jellium vacancy, gives good agreement with experiment, especially in the Auger case. The chemical and relaxation contributions to the shifts are discussed, and the extra-atomic response is analyzed in detail, both in position and energy space. The adequacy of the "excited-atom" approach to the energy shifts is discussed. Peer reviewed
The Group Mind Hypothesis between Social ontology and Philosophy of Mind: Some Critical Notes
2013
Some recent theoretical analyses of collective behavior in social ontology, philosophy of mind and situated cognitive science have proposed arguments to revive the notion of group mind as the proper bearer of joint cognitive processes and actions. In this paper I analyse two kinds of arguments supporting this view: first, since group reasons in joint actions claim, at least sometimes, to have a priority over individual reasons, then groups are psychologically autonomous from their members. Second, the structure of the causal and functional dynamics of individual and collective cognition mirror each other in such a way that, by parity of reasoning, we must talk of a collective mind as underl…