Results 81 to 90 of about 3,213 (196)

Exploring the application of ferroelectret nanogenerators in medical engineering

open access: yesFlexMat, Volume 2, Issue 2, Page 204-224, July 2025.
Abstract Flexible devices derived from piezoelectric materials have gained considerable attention due to their exceptional biocompatibility. Among these, ferroelectret nanogenerators (FENG) is a novel type of flexible piezoelectric device that integrates self‐powering, actuation, and sensing capabilities.
Xianfa Cai   +4 more
wiley   +1 more source

The 6th International Leh Symposium

open access: yes, 2022
Pulmonary Circulation, Volume 12, Issue 3, July 2022.
wiley   +1 more source

BCG Signal Processing [PDF]

open access: yes, 2018
Bakalářská práce se zabývá návrhem a vývojem softwarového nástroje pro komplexní zpracování a následnou analýzu balistokardiografického signálu (BKG). Software byl vyvinut v interaktivním programové prostředí a skriptovacím programovacím jazyce Matlab v ...
Lančová, Jana
core  

Physiologic Status Monitoring via the Gastrointestinal Tract [PDF]

open access: yes, 2014
Reliable, real-time heart and respiratory rates are key vital signs used in evaluating the physiological status in many clinical and non-clinical settings.
Barman, Ross   +7 more
core   +1 more source

Air-mattress system for ballistocardiogram-based heart rate and breathing rate estimation

open access: yesHeliyon, 2023
Sleep-related problems are widespread. Numerous devices for sleep monitoring are increasingly available, including smartwatches, sleep monitoring rings, etc. These devices accumulate and analyze a substantial quantity of physiological data. In this study,
Chun-Liang Lin   +2 more
doaj   +1 more source

Short-term heart rate variability as a general indicator of health estimated by ballistocardiography using a hydraulic bed sensor in elder care [PDF]

open access: yes
Dissertation supervisor: Dr. Marjorie Skubic.Includes vita.A new approach for an accurate heartbeat detection algorithm for ballistocardiographic signals using combined clustering techniques (k-means and fuzzy C-means) for template extraction followed by
Paniagua, Licet Rosales, 1979-
core   +1 more source

Heartbeat Rate Measurement from Facial Video [PDF]

open access: yes, 2016
Heartbeat Rate (HR) reveals a person’s health condition. This paper presents an effective system for measuring HR from facial videos acquired in a more realistic environment than the testing environment of current systems.
Haque, Mohammad Ahsanul   +3 more
core   +2 more sources

Huomaamattomat mittausmenetelmät unen laadun tarkkailussa [PDF]

open access: yes, 2013
Sleep is an important part of health and well-being. While sleep quantity is directly measurable, sleep quality has traditionally been assessed with subjective methods such as questionnaires. The study of sleep disorders has for a long time been confined
Rinta-Koski, Olli-Pekka
core  

Embryonic heart rate is higher in species that experience greater nest predation risk during incubation

open access: yesEcology and Evolution, Volume 14, Issue 6, June 2024.
We investigated potential factors affecting embryonic heart rate (EHR), a proxy of development, in 14 wild songbird species in east‐central Illinois, USA. Within species we found that EHR was positively associated with embryonic age and egg temperature, while EHR among species were positively associated with nest predation risk.
Alexander J. Di Giovanni   +3 more
wiley   +1 more source

Validation of an Accelerometer Based BCG Method for Sleep Analysis [PDF]

open access: yes, 2016
Sleep problems are one of the most common medical complaints today. Polysomnography (PSG) as the current standard for sleep analysis is expensive, intrusive and complex.
Koivisto, Tero   +4 more
core  

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