scholarly journals Feasibility of assessing ultra-short-term pulse rate variability from video recordings

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e8342 ◽  
Author(s):  
Miha Finžgar ◽  
Primož Podržaj
Keyword(s):  
Pulse Rate ◽  
Effect Size ◽  
Well Being ◽  
Future Research ◽  
Short Term ◽  
Pulse Rate Variability ◽  
Data Set ◽  
Video Recordings ◽  
Remote Photoplethysmography ◽  
Small Effect Size

Objectives Remote photoplethysmography (rPPG) is a promising non-contact measurement technique for assessing numerous physiological parameters: pulse rate, pulse rate variability (PRV), respiratory rate, pulse wave velocity, blood saturation, blood pressure, etc. To justify its use in ultra-short-term (UST) PRV analysis, which is of great benefit for several healthcare applications, the agreement between rPPG- and PPG-derived UST-PRV metrics was studied. Approach Three time-domain metrics—standard deviation of normal-to-normal (NN) intervals (SDNN), root mean square of successive NN interval differences (RMSSD), and the percentage of adjacent NN intervals that differ from each other by more than 50 ms (pNN50)—were extracted from 56 video recordings in a publicly available data set. The selected metrics were calculated on the basis of three groups of 10 s recordings and their average, two groups of 30 s recordings and their average, and a group of 60 s recordings taken from the full-length recordings and then compared with metrics derived from the corresponding reference (PPG) pulse waveform signals by using correlation and effect size parameters, and Bland–Altman plots. Main results The results show there is stronger agreement as the recording length increases for SDNN and RMSSD, yet there is no significant change for pNN50. The agreement parameters reach r = 0.841 (p < 0.001), r = 0.529 (p < 0.001), and r = 0.657 (p < 0.001), estimated median bias −1.52, −2.28 ms and −1.95% and a small effect size for SDNN, RMSSD, and pNN50 derived from the 60 s recordings, respectively. Significance Remote photoplethysmography-derived UST-PRV metrics manage to capture UST-PRV metrics derived from reference (PPG) recordings well. This feature is highly desirable in numerous applications for the assessment of one’s health and well-being. In future research, the validity of rPPG-derived UST-PRV metrics compared to the gold standard electrocardiography recordings is to be assessed.

CSR in developing countries – the importance of good governance and economic growth: evidence from Africa

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Murumba Inekwe ◽  
Fathyah Hashim ◽  
Sofri B. Yahya
Keyword(s):  
Economic Growth ◽  
Developing Countries ◽  
Effect Size ◽  
Good Governance ◽  
Substantial Effect ◽  
Data Availability ◽  
Future Research ◽  
Content Type ◽  
Small Effect Size ◽  
Interval Ratio

Purpose The purpose of this study is to examine the effect of public governance and economic growth on corporate social responsibility (CSR) performance in Egypt, Morocco, Mauritius, Nigeria and South Africa. It also assesses the trend of CSR performance in these countries over time. Design/methodology/approach The study is based on a sample of five countries in Africa for the period 2012-2017. The multivariate regression model was used in testing the research questions/hypotheses. Robustness tests were performed to provide evidence to strengthen the findings of the study. Findings Findings suggest that both good governance and economic growth are significantly positively associated with CSR performance. However, while good governance has a relatively substantial effect size, economic growth has a small effect size. Overall, both variables have a considerably low confidence interval ratio and therefore stand a good chance of holding up in future research. Research limitations/implications The analysis is limited to within-country effects, thereby forgoing the opportunity to explain between-countries effects. Second, the sample size is relatively small because of the limitation of data availability on CSR in Africa; hence, population generalization is not intended but theory generalization. Practical implications Findings have implications for studies on CSR performance in Africa that fail to consider the socio-political and socio-economic level of development as contextual variables in the research design. Originality/value Prior studies on CSR have focused majorly on CSR performance–corporate financial performance relationship. Furthermore, there are several calls in the literature for research for a new direction on CSR in the context of developing countries, especially Africa. This paper responds to these literature gaps.

Financial education and financial satisfaction

2017 ◽  
Vol 35 (5) ◽  
pp. 805-817 ◽  
Author(s):  
Jing Jian Xiao ◽  
Nilton Porto
Keyword(s):  
Financial Literacy ◽  
Financial Education ◽  
Well Being ◽  
Financial Behavior ◽  
Future Research ◽  
Financial Satisfaction ◽  
Financial Capability ◽  
Data Set ◽  
Content Type ◽  
Mediating Factors

Purpose The purpose of this paper is to investigate roles of financial literacy, financial behavior, and financial capability as mediating factors between financial education and financial satisfaction. Design/methodology/approach Data are from the 2012 National Financial Capability Study, a large national data set with detailed information on financial satisfaction, education, literacy, behavior, capability, and related variables. Mediation analyses are used to answer research questions. Findings Financial education may affect financial satisfaction, a subjective measure of financial well-being, through financial literacy, financial behavior, and financial capability variables. Results show that subjective financial literacy, desirable financial behavior and a financial capability index (a sum of Z-scores of objective financial literacy, subjective financial literacy, desirable financial behavior, and perceived financial capability) are strong mediators between financial education and financial satisfaction. Research limitations/implications The study has used cross sectional data that can only document associations between financial education and satisfaction and the mediators between them. Future research could use relevant longitudinal data to verify multiple benefits of financial education. Practical implications The findings have implications for financial service professionals to take advantages of multiple benefits of financial education in content acquisition, confidence in knowledge and ability, and action taking when they communicate with their clients. Social implications Policy makers on consumer financial education may use the information to advocate and promote effective education programs to improve consumer financial well-being. Originality/value This study is the first of this kind to examine the association between financial education and financial satisfaction and several financial capability variables as mediating factors.

scholarly journals A framework proposal for digital interventions in perinatal education: the result of a content analysis to WHO intra-partum care recommendations

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Carla V. Leite ◽  
Ana Margarida Almeida
Keyword(s):  
Content Analysis ◽  
Scientific Evidence ◽  
Fetal Monitoring ◽  
Well Being ◽  
World Health ◽  
Future Research ◽  
Data Set ◽  
Content Type ◽  
Digital Interventions ◽  
Third Stage Of Labor

Purpose This research proposes a framework to guide the development and analysis of digital interventions, namely, through mobile applications, regarding labor and birth. By complying with current scientific evidence, this paper aims to contribute to the safeness and completeness of perinatal health education targeting expectant parents. Design/methodology/approach A content analysis was conducted on a document containing World Health Organization guidelines for intra-partum, considering the following categories: timeframe, care options, category of recommendation, to create a data set clearly distinguishing between recommendations and non-recommendations. Context-specific and research-context recommendations, details from dosages, measurements and timings, infant care and non-immediate postpartum topics were considered out of the scope of this study. Findings The results were summarized in a table, ready to be used as a data set, including the following 16 care options ranging from health, well-being and/or rights: respect, communication, companionship, pregnant person’s monitoring, status, fetal monitoring, pain relief, pain management, amenities, labor delay prevention, progress, freedom of choice, facilitation of birth, prevention of postpartum hemorrhage, umbilical cord care and recovery. These were distributed across six timeframes: always, admission, first, second and third stage of labor and immediate postpartum. In addition, recommendations and non-recommendations are displayed in different columns. Originality/value This transdisciplinary research intends to contribute to: future research on perinatal education; the creation of digital interventions, namely, m-health ones, targeting expectant parents by providing a framework of content coverage; the endorsement of the rights to Information and to decision-making. Ultimately, when put into practice, the framework can impact self-care through access to perinatal education.

scholarly journals Narcissism and the Strategic Pursuit of Short-Term Mating

2017 ◽  
Vol 26 (1) ◽  
pp. 89-137 ◽  
Author(s):  
David P. Schmitt
Keyword(s):  
Partner Violence ◽  
Western Europe ◽  
Well Being ◽  
Mating Strategies ◽  
Future Research ◽  
Subjective Well Being ◽  
Short Term ◽  
Mate Poaching ◽  
Marital Infidelity ◽  
Active Pursuit

Previous studies have documented links between sub-clinical narcissism and the active pursuit of short-term mating strategies (e.g., unrestricted sociosexuality, marital infidelity, mate poaching). Nearly all of these investigations have relied solely on samples from Western cultures. In the current study, responses from a cross-cultural survey of 30,470 people across 53 nations spanning 11 world regions (North America, Central/South America, Northern Europe, Western Europe, Eastern Europe, Southern Europe, Middle East, Africa, Oceania, Southeast Asia, and East Asia) were used to evaluate whether narcissism (as measured by the Narcissistic Personality Inventory; NPI) was universally associated with short-term mating. Results revealed narcissism scores (including two broad factors and seven traditional facets as measured by the NPI) were functionally equivalent across cultures, reliably associating with key sexual outcomes (e.g., more active pursuit of short-term mating, intimate partner violence, and sexual aggression) and sex-related personality traits (e.g., higher extraversion and openness to experience). Whereas some features of personality (e.g., subjective well-being) were universally associated with socially adaptive facets of Narcissism (e.g., self-sufficiency), most indicators of short-term mating (e.g., unrestricted sociosexuality and marital infidelity) were universally associated with the socially maladaptive facets of narcissism (e.g., exploitativeness). Discussion addresses limitations of these cross-culturally universal findings and presents suggestions for future research into revealing the precise psychological features of narcissism that facilitate the strategic pursuit of short-term mating.

scholarly journals Evaluation of biases in remote photoplethysmography methods

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Ananyananda Dasari ◽  
Sakthi Kumar Arul Prakash ◽  
László A. Jeni ◽  
Conrad S. Tucker
Keyword(s):  
Pulse Rate ◽  
Environmental Conditions ◽  
Human Subjects ◽  
Wearable Sensors ◽  
Ground Truth ◽  
Video Data ◽  
Estimation Methods ◽  
Rate Measurement ◽  
Pulse Rate Variability ◽  
Remote Photoplethysmography

AbstractThis work investigates the estimation biases of remote photoplethysmography (rPPG) methods for pulse rate measurement across diverse demographics. Advances in photoplethysmography (PPG) and rPPG methods have enabled the development of contact and noncontact approaches for continuous monitoring and collection of patient health data. The contagious nature of viruses such as COVID-19 warrants noncontact methods for physiological signal estimation. However, these approaches are subject to estimation biases due to variations in environmental conditions and subject demographics. The performance of contact-based wearable sensors has been evaluated, using off-the-shelf devices across demographics. However, the measurement uncertainty of rPPG methods that estimate pulse rate has not been sufficiently tested across diverse demographic populations or environments. Quantifying the efficacy of rPPG methods in real-world conditions is critical in determining their potential viability as health monitoring solutions. Currently, publicly available face datasets accompanied by physiological measurements are typically captured in controlled laboratory settings, lacking diversity in subject skin tones, age, and cultural artifacts (e.g, bindi worn by Indian women). In this study, we collect pulse rate and facial video data from human subjects in India and Sierra Leone, in order to quantify the uncertainty in noncontact pulse rate estimation methods. The video data are used to estimate pulse rate using state-of-the-art rPPG camera-based methods, and compared against ground truth measurements captured using an FDA-approved contact-based pulse rate measurement device. Our study reveals that rPPG methods exhibit similar biases when compared with a contact-based device across demographic groups and environmental conditions. The mean difference between pulse rates measured by rPPG methods and the ground truth is found to be ~2% (1 beats per minute (b.p.m.)), signifying agreement of rPPG methods with the ground truth. We also find that rPPG methods show pulse rate variability of ~15% (11 b.p.m.), as compared to the ground truth. We investigate factors impacting rPPG methods and discuss solutions aimed at mitigating variance.

A Meta-Analysis of Facebook-Assisted Learning Outcomes and Their Gender Differences

2021 ◽  
Vol 13 (4) ◽  
pp. 63-82
Author(s):  
*Zhonggen Yu ◽  
Liheng Yu
Keyword(s):  
Gender Differences ◽  
Social Media ◽  
Learning Outcomes ◽  
Effect Size ◽  
Meta Analysis ◽  
Medium Effect ◽  
Future Research ◽  
Small Effect Size ◽  
Medium Effect Size ◽  
Media Applications

Social media applications such as Facebook have received wide attention in their use in education. However, it is still hard to arrive at a conclusion regarding whether a Facebook-assisted approach is effective in education and whether there are any significant gender differences in the learning outcomes. Based on rigid inclusion criteria, this study included 21 peer-reviewed high-quality journal articles. Through a meta-analysis using Reviewer Manager 5.3, the authors concluded that a Facebook-assisted approach could obtain significantly higher learning outcomes than the non-Facebook-assisted one with a medium effect size (d = 0.42) and that females could achieve significantly better learning outcomes than males with a very small effect size (d = -0.21) in the Facebook-assisted education. Future research could examine the effect of educational use of other social media applications, as well as in sociological, psychological, or educational dimensions.

scholarly journals The Effects of Psychological Skills Training for Archery Players in Korea: Research Synthesis Using Meta-Analysis

2021 ◽  
Vol 18 (5) ◽  
pp. 2272
Author(s):  
Eui Jae Kim ◽  
Hyun Wook Kang ◽  
Seong Man Park
Keyword(s):  
Effect Size ◽  
Meta Analysis ◽  
Skills Training ◽  
Training Period ◽  
Future Research ◽  
Psychological Skills ◽  
Psychological Skills Training ◽  
Training Interventions ◽  
Small Effect Size ◽  
And Training

The purpose of this meta-analysis study was to investigate the effectiveness of psychological skills training interventions for archery players in Korea. A total of 17 research papers examining the effects of psychological skills training interventions were selected for data analysis. To analyze the data, the Comprehensive Meta-Analysis (CMA) software program was used. The results of this study were as follows: The overall effect size of psychological skills training interventions for archery players was ES = 0.469 (Hedges’ g), which was a small effect size. The major factors that influenced the effects of psychological skills training interventions for archery players appeared to be the player level and training period. In particular, adult players and longer periods of training had bigger effect sizes. The results of this study demonstrate that psychological skills training for archery players is effective and show that the player level and training period are crucial factors in the psychological skills training design. Based on these findings, some implications for future research are discussed.

scholarly journals The Effect of Stepfathers on Self-Perception and Familial Support

2019 ◽  
Author(s):  
Kamilah Adiva Freeman ◽  
Logan A. Yelderman
Keyword(s):  
Family Relationships ◽  
Academic Motivation ◽  
Well Being ◽  
Self Esteem ◽  
Future Research ◽  
Self Perception ◽  
Biological Father ◽  
Data Set ◽  
Familial Support ◽  
The Difference

The National Survey on American Life – Adolescent Supplemental data was designed to lay the foundation for future research in early identification of mental disorders for adults. The inclusion of social conditions adds to this detailed measure of mental health and provides a wealth of information that can be observed about mental well-being in adolescents. In particular, we used this data set to explore the interplay between self-perception and family relationships based on the absence of a biological father among African-American and Caribbean adolescents. This study provides a quantitative analysis of the difference between the perceived self and familial factors for those with a stepfather and those without a stepfather. As evident in the findings, those with a stepfather reported to have higher self-esteem, a more positive perception of self, and a more uplifting family model compared to those without a stepfather. These findings were detected by noting the significance values for a one-way ANOVA and observing the mean differences among the selected variables. Some discrepancy did exist, however; self-esteem with regards to education was reported to be lower for adolescents with a stepfather than without. This could be attributed to an overachievement mentality by those from single parent homes, alluding to the idea that adolescents without stepfathers possess intrinsic motivation and have the drive to attain a higher education. The data showed the presence of a father figure enhances self-perception and familial support, but not academic motivation.

scholarly journals Pulse Rate Variability Analysis Using Remote Photoplethysmography Signals

Sensors ◽  
2021 ◽  
Vol 21 (18) ◽  
pp. 6241
Author(s):  
Su-Gyeong Yu ◽  
So-Eui Kim ◽  
Na Hye Kim ◽  
Kun Ha Suh ◽  
Eui Chul Lee
Keyword(s):  
Health Status ◽  
Pulse Rate ◽  
Correlation Coefficients ◽  
Single Pulse ◽  
Health Status Indicators ◽  
Pulse Rate Variability ◽  
System A ◽  
Remote Photoplethysmography ◽  
Volume Pulse ◽  
Blood Volume Pulse

Pulse rate variability (PRV) refers to the change in the interval between pulses in the blood volume pulse (BVP) signal acquired using photoplethysmography (PPG). PRV is an indicator of the health status of an individual’s autonomic nervous system. A representative method for measuring BVP is contact PPG (CPPG). CPPG may cause discomfort to a user, because the sensor is attached to the finger for measurements. In contrast, noncontact remote PPG (RPPG) extracts BVP signals from face data using a camera without the need for a sensor. However, because the existing RPPG is a technology that extracts a single pulse rate rather than a continuous BVP signal, it is difficult to extract additional health status indicators. Therefore, in this study, PRV analysis is performed using lab-based RPPG technology that can yield continuous BVP signals. In addition, we intended to confirm that the analysis of PRV via RPPG can be performed with the same quality as analysis via CPPG. The experimental results confirmed that the temporal and frequency parameters of PRV extracted from RPPG and CPPG were similar. In terms of correlation, the PRVs of RPPG and CPPG yielded correlation coefficients between 0.98 and 1.0.

Sign in / Sign up

Export Citation Format

Share Document