scholarly journals An iPPG-Based Device for Pervasive Monitoring of Multi-Dimensional Cardiovascular Hemodynamics

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 872
Author(s):  
Jingjing Luo ◽  
Junjie Zhen ◽  
Peng Zhou ◽  
Wei Chen ◽  
Yuzhu Guo
Keyword(s):  
Laboratory Research ◽  
Self Monitoring ◽  
Pervasive Healthcare ◽  
New Device ◽  
Facial Region ◽  
Cardiovascular Hemodynamics ◽  
Promising Solution ◽  
Pervasive Monitoring ◽  
Advanced Computing ◽  
User Friendly

Hemodynamic activities, as an essential measure of physiological and psychological characteristics, can be used for cardiovascular and cerebrovascular disease detection. Photoplethysmography imaging (iPPG) can be applied for such purposes with non-contact advances, however, most cardiovascular hemodynamics of iPPG systems are developed for laboratory research, which limits the application in pervasive healthcare. In this study, a video-based facial iPPG detecting equipment was devised to provide multi-dimensional spatiotemporal hemodynamic pulsations for applications with high portability and self-monitoring requirements. A series of algorithms have also been developed for physiological indices such as heart rate and breath rate extraction, facial region analysis, and visualization of hemodynamic pulsation distribution. Results showed that the new device can provide a reliable measurement of a rich range of cardiovascular hemodynamics. Combined with the advanced computing techniques, the new non-contact iPPG system provides a promising solution for user-friendly pervasive healthcare.

scholarly journals The Roball

2002 ◽  
Vol 35 (3) ◽  
pp. 204-207 ◽  
Author(s):  
William H. Robinson
Keyword(s):  
Seismic Isolation ◽  
Inverted Pendulum ◽  
Experimental Results ◽  
Flat Plates ◽  
Isolation System ◽  
Friction Forces ◽  
New Device ◽  
System A ◽  
Full Scale Tests ◽  
User Friendly

Robinson Seismic's latest developments in seismic isolation includes a new device, the RoballTM, for seismically isolating structures during earthquakes. This advance is a new concept for seismic isolation based on the principle of the inverted pendulum. It consists of 'friction balls' or 'Roballs' moving between upper and lower spherical like cavities or flat plates. The Roballs are filled with a material which is able to provide the friction forces required to absorb the energy from numerous earthquakes while supporting the structure. The Roball technique is expected to enable light and in the future possibly heavy structures to be more economically seismically isolated. As part of a program to develop a user friendly 'seismic isolation system' a series of full-scale tests have been carried out on a number of possible designs including three approaches for vertical pressures of -1 MPa resulting in coefficients of friction of -0.1 to -0.4. In this paper we present the preliminary experimental results.

scholarly journals Remote Blood Pressure Monitoring With a Wearable Photoplethysmographic Device (Senbiosys): Protocol for a Single-Center Prospective Clinical Trial (Preprint)

2021 ◽  
Author(s):  
Sara Schukraft ◽  
Assim Boukhayma ◽  
Stéphane Cook ◽  
Antonino Caizzone
Keyword(s):  
Blood Pressure ◽  
Blood Pressure Monitoring ◽  
Prospective Trial ◽  
Vital Signs ◽  
Adult Patients ◽  
Arterial Catheter ◽  
Single Center ◽  
New Device ◽  
Remote Patient ◽  
User Friendly

BACKGROUND Wearable devices can provide user-friendly, accurate, and continuous blood pressure (BP) monitoring to assess patients’ vital signs and achieve remote patient management. Remote BP monitoring can substantially improve BP control. The newest cuffless BP monitoring devices have emerged in patient care using photoplethysmography. OBJECTIVE The Senbiosys trial aims to compare BP measurements of a new device capturing a photoplethysmography signal on the finger versus invasive measurements performed in patients with an arterial catheter in the intensive care unit (ICU) or referred for a coronarography at the Hospital of Fribourg. METHODS The Senbiosys study is a single-center, single-arm, prospective trial. The study population consists of adult patients undergoing coronarography or patients in the ICU with an arterial catheter in place. This study will enroll 35 adult patients, including 25 patients addressed for a coronarography and 10 patients in the ICU. The primary outcome is the assessment of mean bias (95% CI) for systolic BP, diastolic BP, and mean BP between noninvasive and invasive BP measurements. Secondary outcomes include a reliability index (Qualification Index) for BP epochs and count of qualified epochs. RESULTS Patient recruitment started in June 2021. Results are expected to be published by December 2021. CONCLUSIONS The findings of the Senbiosys trial are expected to improve remote BP monitoring. The diagnosis and treatment of hypertension should benefit from these advancements. CLINICALTRIAL ClinicalTrials.gov NCT04379986; https://clinicaltrials.gov/ct2/show/NCT04379986 INTERNATIONAL REGISTERED REPORT PRR1-10.2196/30051

scholarly journals Developing problem solving competences through the resolution of contextualized problems with an Advanced Computing Environment

2017 ◽  
Author(s):  
Marina Marchisio ◽  
Alice Barana ◽  
Michele Fioravera
Keyword(s):  
Critical Thinking ◽  
Problem Solving ◽  
Computer System ◽  
Three Dimensions ◽  
Computing Environment ◽  
Problematic Situation ◽  
Verbal Explanation ◽  
Different Types ◽  
Advanced Computing ◽  
User Friendly

The paper shows how problem solving competences can be developed by solving contextualized problems using an Advanced Computing Environment (ACE). An ACE is a computer system which enables its user to perform numeric and symbolic computations, graphical representations in two and three dimensions, insert embedded components and create interactive worksheet, all in the same user-friendly environment. An ACE allows students to approach a problematic situation in the way that most suits their thinking, to use different types of representations according to the chosen strategy and to display the whole reasoning together with verbal explanation in the same page: in other words, they can fulfill all the processes that problem solving involves. This paper analyzes a problem solving activity with an ACE proposed by the XXX of the ZZZ, and clarifies, also through examples, how the use of the ACE makes it possible to solve real and relevant problems, facilitates the comprehension of the situation and of the Mathematics laying behind and enhance critical thinking.

scholarly journals A Quality and Ergonomic Heart Monitoring Device with User-Friendly App for Telemedicine

Proceedings ◽  
2019 ◽  
Vol 31 (1) ◽  
pp. 67 ◽  
Author(s):  
Bleda ◽  
Maestre ◽  
Corral ◽  
Ruiz
Keyword(s):  
The Elderly ◽  
Testing Procedure ◽  
Monitoring Device ◽  
Medical Monitoring ◽  
Ecg Monitoring ◽  
Self Monitoring ◽  
Arterial Blood ◽  
Viable Solution ◽  
Number Of Patients ◽  
User Friendly

During recent decades, the elderly population has grown rapidly, and the number of patients with chronic heart-related diseases has exploded. Many of them (e.g., congestive heart failure, some types of arrhythmia) require close medical supervision, imposing a major burden on healthcare resources in most western economies. Telemedicine is clearly emerging as a viable solution for health care to become sustainable by enabling medical monitoring at home without direct professional help, which would greatly reduce assistance costs. Specifically, continuous or frequent arterial blood pressure (ABP) and electrocardiogram (ECG) monitoring are important tools in the follow-up of many of these patients. A multipurpose (e.g. ABP and ECG) monitoring device that requires no medical assistance is highly desirable and would be of great value to patients. One such solution is presented and validated in this work. This paper presents the details of the proposed remote heart self-monitoring system, the testing procedure, and test results.

Development of Superpave Direct Tension Test Device

1997 ◽  
Vol 1586 (1) ◽  
pp. 32-39 ◽  
Author(s):  
Raj Dongré ◽  
John D’Angelo ◽  
Steve McMahon
Keyword(s):  
Asphalt Binder ◽  
Tension Test ◽  
Asphalt Binders ◽  
Temperature Control System ◽  
Materials Testing ◽  
Direct Tension ◽  
Direct Tension Test ◽  
New Device ◽  
Failure Properties ◽  
User Friendly

The redesign and evaluation of the Superpave direct tension test (DTT) are described. The prototype of the DTT device was developed during the Strategic Highway Research Program (SHRP). The DTT device, an integral part of the new Superpave asphalt binder specification, was developed to test asphalt binders and determine their failure properties, such as the stress and strain at failure. The strain at failure is used in the Superpave asphalt binder specification to determine the lowest temperature at which the asphalt can be used to avoid low-temperature thermal cracking. When the SHRP program was completed, an affordable specification version of the prototype SHRP-DTT device was introduced for field implementation. Unfortunately, this version was plagued with mechanical problems, producing excessive variability and inconsistency in data. The device also was less user-friendly than other test devices that were being implemented for the asphalt binder specification. These problems led to implementation delays and difficulties. The problems were addressed by FHWA in cooperation with Instron Corporation of Canton, Massachusetts (a manufacturer of materials testing equipment). On the basis of recommendations made by FHWA, Instron developed a new, easy-to-use specification-type DTT device. This device is compact (approximately one-tenth the size of the original) and uses a fluid-based temperature control system similar to that used in the bending beam rheometer. The new device also employs feedback elongation (strain) rate control. However, unlike the previous device, the new DTT uses an extensometer between the loading pins instead of a laser to measure elongation (strain). The evaluation and resulting recommendations by FHWA, which led to the development of the new specification-type devices are discussed. The repeatability and testing protocols also are discussed.

scholarly journals Review of software applications for agricultural production in Croatia

2019 ◽  
Vol 80 (2) ◽  
pp. 129-142
Author(s):  
Luka Brezinščak ◽  
Milan Mesić
Keyword(s):  
Mobile Devices ◽  
Agricultural Production ◽  
Access To Information ◽  
Agriculture Sector ◽  
Software Applications ◽  
Promising Solution ◽  
The Moment ◽  
Agriculture Management ◽  
User Friendly ◽  
New Generation

The application of mobile devices (smartphones, tablets, etc.) to the agriculture sector has been greatly increased in the last decade. The ICT technologies have become an essential part of any business. Using Internet on mobile devices can prove to be essential in agriculture production. A new generation of mobile devices are lower in price and more user-friendly. This paper provides an overview of software applications that are created in Croatia and are mostly in the Croatian language. They are divided into groups of agriculture related applications; agriculture management information apps; agriculture information resource apps; agriculture calculator apps; agriculture news apps, weather apps. The research shows the agri-apps are still in its infancy and we can say that it reflects the state of agriculture in Croatia. Apps are a promising solution for farmers enabling them quick and trustworthy access to information. At the moment, further analyses are needed for scientific proof and improvement of a product

NEW DEVICE AND PROCEDURE FOR COMPARATIVE TESTS OF THE ABRASIVE WEAR RESISTANCE OF 65G STEEL COATINGS OBTAINED BY HIGH-SPEED HDPE BORATING

2021 ◽  
Vol 2 (143) ◽  
pp. 120-129
Author(s):  
Vyacheslav F. Aulov ◽  
◽  
Yuri N. Rozhkov ◽  
Valentin P. Lyalyakin
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Resistance Index ◽  
Field Tests ◽  
Research Purpose ◽  
Laboratory Research ◽  
Comparative Tests ◽  
New Device ◽  
Relative Wear ◽  
Relative Wear Resistance

Abrasive wear tests are a complex, time-consuming and long-term type of research on the wear-resistant properties of materials. Known methods for the experimental determination of the wear resistance of materials based on abrasive wear require an assessment of the wear resistance corresponding to the characteristics of field tests of parts with reinforcing coatings applied using high- frequency currents. (Research purpose) The research purpose is in analyzing the existing methods of testing for abrasive wear in the development of technological processes to increase the wear resistance of the surfaces of machine parts in comparison with the methodology developed by VIM, as well as comparing the methods of laboratory tests and field tests with the method proposed in this paper. (Materials and methods) Authors chose the IM-01 installation of the VISKHOM design for laboratory research, which uses powder abrasive. The article describes the most similar methods of foreign authors. The drill bits of Amazone seeders were strengthened according to the selected testing technology. The plates with a size of 60x40 and a thickness of 5-7 millimeters were selected as samples for testing the relative wear resistance. According to the VIM method, an abrasive radial petal circle is used as an abrasive material on the M-1 installation. (Results and discussion) The test results are expressed by the relative wear resistance index ε, which is equal to the ratio of the wear resistance of the test sample to the wear resistance of the standard. The use of the relative wear resistance index allows to increase the accuracy of the results obtained due to the exclusion of the influence of natural changes in external parameters that determine the wear rate during the test. (Conclusions) The proposed device makes it possible to provide accelerated comparative tests of samples and improve the stability of obtaining wear characteristics in a relatively short time (with the practical use of the device, the time spent on testing of one sample was about 8 minutes).

scholarly journals Self-monitoring dan Kemampuan Verbal Terhadap Perilaku Berbohong

2020 ◽  
Vol 20 (3) ◽  
pp. 249-260
Author(s):  
Rijal Abdillah ◽  
Yuarini Wahyu Pertiwi ◽  
Erik Saut H Hutahaean ◽  
Ryan Bastoro ◽  
Rizki Amalia P Putri ◽  
...  
Keyword(s):  
Heart Rate ◽  
Eye Movements ◽  
Verbal Ability ◽  
Wave Pattern ◽  
Survey Study ◽  
Laboratory Research ◽  
Neutral Group ◽  
Self Monitoring ◽  
Significant Difference ◽  
The Impact

Lies are carried out by individuals in many of their daily activities, the impact of lying is detrimental to others, and the perpetrators. The results of previous studies have explained that this happens because the perpetrator of lying can monitor his appearance so that it is difficult for the victim to see it as a lie. The most difficulty in recognizing lies is identifying indicators of lying. Therefore it is important to be able to identify indicators of lying behavior. Through two series of studies, this study aims to conduct an analysis of lying, through survey research and in-laboratory research. There were 74 subjects in the survey, and 60 people were involved to be the subject of experimental research. With details of 20 people as the lying group, 20 people as the honest group and 20 people as the neutral group. The results of the survey study found that self-monitoring is related to lying behavior, and self-monitoring also has a direct effect on lying behavior. Conversely, verbal ability is not related to lying. In the experimental study, it was found that the heart rate was different between the three experimental groups. Similar to the sound amplification (db) there was a significant difference between the three experimental groups, but the analysis of the sound wave pattern showed no difference. The results of the analysis of the response reactions and eye movements were not different. The empirical facts of this study can be used to identify indicators of lying behavior. Keyword: self-monitoring, verbal ability, heart rate, eye movements, and lying behavior   Abstrak Berbohong dilakukan oleh individu pada banyak di setiap aktivasnya sehari-hari, dampak dari perilaku berbohong merugikan orang lain, dan diri pelakunya. Hasil studi terdahulu menerangkan hal itu dapat terjadi karena pelaku berbohong dapat memantau tampilan keadaan dirinya sehingga sulit di lihat oleh korbannya sebagai kebohongan. Kesulitan terberat dalam mengenali kebohongan di dalam aktivas sehari–hari adalah mengenali indikator-indikator yang menjadi bagian dari perilaku berbohong. Berupa kemampuan verbal, reaksi memberikan jawaban, ekspresi wajah, denyut jantung, suara yang dikeluarkan. Oleh karenanya penting untuk dapat mengenali indikator tentang perilaku berbohong. Melalui dua rangkaian studi penelitian ini berupaya untuk melakukan analisis mengenai perilaku berbohong, secara penelitian survei dan penelitian di dalam laboratorium. Sebanyak 74 subjek dilibatkan di dalam proses studi survei. Kemudian sebanyak 60 orang dilibatkan untuk menjadi subjek penelitian eksperimen. Dengan rincian 20 orang untuk kelompok berbohong, 20 orang untuk kelompok jujur dan 20 orang untuk kelompok netral (bebas memilih bohong atau jujur). Hasil studi survei mendapatkan fakta bahwa self-monitoring berhubungan dengan perilaku berbohong, dan self-monitoring juga berpengaruh secara langsung terhadap perilaku berbohong. Sebaliknya kemampuan verbal tidak berhubungan dengan perilaku berbohong. Pada studi eksperimen didapatkan hasil bahwa denyut jantung terjadi perbedaan diantara tiga kelompok eksperimen. Begitupula dengan amplifikasi suara (db) terjadi perbedaan yang signifikan diantara ketiga kelompok eksperimen, akan tetapi analisis terhadap pola gelombang suara tidak menunjukkan adanya perbedaan. Begitu juga hasil analisis terhadap reaksi menjawab dan gerakan mata keduanya tidak didapatkan adanya perbedaan. Fakta empiris penelitian ini kiranya dapat dimanfaatkan untuk mengenal mengenai indikator perilaku berbohong.   Kata Kunci: self-monitoring, kemampuan verbal, denyut jantung, gerak mata, dan perilaku berbohong

Remote physiological monitoring in an austere environment: a future for battlefield care provision?

2018 ◽  
Vol 164 (6) ◽  
pp. 410-413
Author(s):  
Matthew J Smyth ◽  
J A Round ◽  
A J Mellor
Keyword(s):  
Remote Monitoring ◽  
Global Market ◽  
Physiological Status ◽  
Care Provision ◽  
Self Monitoring ◽  
Austere Environment ◽  
Military Command ◽  
Monitoring Technologies ◽  
User Friendly ◽  
The Military

Wearable technologies are making considerable advances into the mainstream as they become smaller and more user friendly. The global market for such devices is forecasted to be worth over US$5 billion in 2018, with one in six people owning a device. Many professional sporting teams use self-monitoring to assess physiological parameters and work rate on the pitch, highlighting the potential utility for military command chains. As size of device reduces and sensitivity improves, coupled with remote connectivity technology, integration into the military environment could be relatively seamless. Remote monitoring of personnel on the ground, giving live updates on their physiological status, would allow commanders or medical officers the ability to manage their soldiers appropriately and improve combat effectiveness. This paper explores a proof of concept for the use of a self-monitoring system in the austere high altitude environment of the Nepalese Himalayas, akin to those experienced by modern militaries fighting in remote locations. It also reviews, in part, the historical development of remote monitoring technologies. The system allowed for physiological recordings, plotted against GPS position, to be remotely monitored in Italy. Examples of the data recorded are given and the performance of the system is discussed, including limitations, potential areas of development and how systems like this one could be integrated into the military environment.

Design of a Domestic Weighing Device for Wheelchair Users

2013 ◽  
Author(s):  
Brandon Sherrod ◽  
Jarrod Collins ◽  
Austin Johnson ◽  
Josh Haynes ◽  
Alan Eberhardt ◽  
...  
Keyword(s):  
Weight Gain ◽  
Wheelchair User ◽  
Self Monitoring ◽  
Home Setting ◽  
Wheelchair Users ◽  
Healthcare Facilities ◽  
Senior Design ◽  
Mobility Aid ◽  
User Friendly ◽  
Unites States

This design effort is the result of the capstone senior design project to create an affordable weighing device for wheelchair users. There are 3.3 million individuals in the Unites States that require a wheelchair for mobility aid. 1 Wheelchair use is associated with a number of health problems that are related to weight gain such as heart disease, diabetes, and stroke; however, few wheelchair users can afford currently available home-use wheelchair scales to monitor their weight. 2 Most wheelchair users must go to clinics, hospitals, or other healthcare facilities equipped with expensive wheelchair scales to monitor their weight. Previous studies have shown that consistent self-monitoring of weight is critical in preventing weight gain. 3 There exists a need for a way to measure wheelchair user weight in a home setting in an accurate manner that is user-friendly, portable, and affordable.

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