scholarly journals A Novel 12-Lead Electrocardiographic System for Home Use: Development and Usability Testing (Preprint)

2018 ◽  
Author(s):  
Annemarijn SM Steijlen ◽  
Kaspar MB Jansen ◽  
Armagan Albayrak ◽  
Derk O Verschure ◽  
Diederik F Van Wijk
Keyword(s):  
Measurement System ◽  
Performance Test ◽  
Mobile App ◽  
Diagnostic Process ◽  
Diagnostic Systems ◽  
Adequate Treatment ◽  
Technical Performance ◽  
Usability Tests ◽  
User Friendly ◽  
At Home

BACKGROUND Cardiovascular diseases (CVD) are the leading cause of morbidity and mortality worldwide. Early diagnosis is of pivotal importance for patients with cardiac arrhythmias and ischemia to minimize the consequences like strokes and myocardial infarctions. The chance of capturing signals of arrhythmias or ischemia is substantially high when a 12-lead electrocardiogram (ECG) can be recorded at the moment when a patient experiences the symptoms. However, until now, available diagnostic systems (Holter monitors and other wearable ECG sensors) have not enabled patients to record a reliable 12-lead ECG at home. OBJECTIVE The objective of this project was to develop a user-friendly system that enables persons with cardiac complaints to record a reliable 12-lead ECG at home to improve the diagnostic process and, consequently, reduce the time between the onset of symptoms and adequate treatment. METHODS Using an iterative design approach, ECGraph was developed. The system consists of an ECG measurement system and a mobile app, which were developed with the help of several concept tests. To evaluate the design, a prototype of the final design was built and a final technical performance test and usability test were executed. RESULTS The ECG measurement system consists of a belt and 4 limb straps. Ten wet Ag/AgCl electrodes are placed in the belt to optimize skin-electrode contact. The product is controlled via an app on the mobile phone of the user. Once a person experiences symptoms, he or she can put on the belt and record ECGs within a few minutes. Short instructions, supported by visualizations, offer guidance during use. ECGs are sent wirelessly to the caregiver, and the designated expert can quickly interpret the results. Usability tests with the final prototype (n=6) showed that the participants were able to put on the product within 8 minutes during first-time use. However, we expect that the placement of the product can be executed faster when the user becomes more familiar with the product. Areas of improvement focus mainly on confidence during product use. In the technical performance test, a 12-lead ECG was made and reproduced 6 times. CONCLUSIONS We developed a new 12-lead ECG system for home use. The product is expected to be more user-friendly than current hospital ECG systems and is designed to record more reliable data than current ECG systems for home use, which makes it suitable for expert interpretation. The system has great potential to be incorporated into an outpatient practice, so that arrhythmias and ischemia can be diagnosed and treated as early as possible.

Womens Safety Mobile App

2021 ◽  
Vol 10 (02) ◽  
pp. 121-127
Author(s):  
N. Ramesh Kannan ◽  
S. Sujitha ◽  
S.Ganapathy Subramanian
Keyword(s):  
Domestic Abuse ◽  
Mobile App ◽  
Smart Phones ◽  
User Needs ◽  
Personal Safety ◽  
Late Night ◽  
System User ◽  
The Government ◽  
User Friendly ◽  
At Home

This Women Safety application is used for protects womens from Crimes.Women safety matters a lot whether at home, outside the home or working place.Most of the women of various ages, till this day are being subjected to violence, domestic abuse. In this system user needs to feed three contact numbers, in case of emergency on moving the phone up and down thrice, the system sendsSMS and calls on one of the numbers feeded into the system with the location.The phone starts vibrating and siren starts ringing. Women’s safety is a big concern which has been the most important topic till date. Women safety matters a lot whether at home, outside the home or working place. Few crimes against ladies particularly rape cases were terribly dread and fearful. Most of the women of various ages, till this day are being subjected to violence, domestic abuse, and rape. As ladies ought to travel late night generally, it’s necessary to remain alert and safe. Although the government is taking necessary measures for their safety, still, there are free safety apps for women that can help them to stay safe. Most of the femalesthese days carry their smartphone with them, so it is necessary to have at least one the personal safety appsinstalled. Such a security appfor ladies will definitely facilitate in a way or the opposite. This is user-friendly application that can be accessed by anyone who has installed it in their smart phones. Our intention is to provide you with fastest and simplest way to contact your nearest help. In this system user needs to feed three contact numbers, in case of emergency on moving the phone up and down thrice, the system sends SMS and calls on one of the numbers feeded into the system with the location. The phone starts vibrating and siren starts ringing. This features for both everyday safety and real emergencies, making it an ultimate tool for all.

India Goes Digital..Smartphone is the New Shopping Destination

2018 ◽  
Vol 6 (8) ◽  
pp. 289
Author(s):  
Shankar Chaudhary
Keyword(s):  
Online Shopping ◽  
Mobile Apps ◽  
Smart Phone ◽  
Mobile Commerce ◽  
Mobile App ◽  
Smart Phones ◽  
The Internet ◽  
The World ◽  
Shopping Experience ◽  
User Friendly

Despite being in nascent stage m-commerce is gaining momentum in India. The explosive growth of smart-phone users has made India much loved business destination for whole world. Indian internet user is becoming the second largest in the world next to China surpassing US, which throws open plenty of e-commerce opportunities, not only for Indian players, offshore players as well. Mobile commerce is likely to overtake e-commerce in the next few years, spurred by the continued uptrend in online shopping and increasing use of mobile apps.The optimism comes from the fact that people accessing the Internet through their mobiles had jumped 33 per cent in 2014 to 173 million and is expected to grow 21 per cent year-on-year till 2019 to touch 457 million. e-Commerce brands are eyeing on the mobile app segment by developing user-friendly and secure mobile apps offering a risk-free and easy shopping experience to its users. Budget 4G smart phones coupled with affordable plans, can very well drive 4G growth in India.

App design of distance art education platform under internet ecological environment

2021 ◽  
pp. 002072092098352
Author(s):  
Lanlan Xu ◽  
Qiang Zhou
Keyword(s):  
Art Education ◽  
Interaction Design ◽  
Rapid Development ◽  
Development Trend ◽  
Mobile App ◽  
Traditional Art ◽  
Art Teaching ◽  
Education Platform ◽  
App Design ◽  
At Home

With the rapid development of computer and network technology, the application of mobile app has been involved in all walks of life, especially the traditional art teaching mode. Therefore, it is of great significance to design an app with art learning and education as the main content based on the concept of young people's cognitive psychology and art training. This paper first analyzes the current situation and development trend of art education app at home and abroad, then analyzes and studies the design and application needs of education app at home, clarifies the needs of students and teachers, analyzes the visual and psychological characteristics of teenagers and their impact on interface and interaction design, and finally designs an art education app that meets the domestic needs. The results show that the app can enhance the interest of young people in art learning.

scholarly journals BPcontrol

2016 ◽  
Vol 07 (04) ◽  
pp. 1120-1134 ◽  
Author(s):  
Adrián Carrera ◽  
Marc Pifarré ◽  
Jordi Vilaplana ◽  
Josep Cuadrado ◽  
Sara Solsona ◽  
...  
Keyword(s):  
Operating Systems ◽  
The Elderly ◽  
Mobile App ◽  
Hypertensive Patients ◽  
Monitoring And Diagnosis ◽  
Start Up ◽  
Communication Efficiency ◽  
Efficiency Factors ◽  
User Friendly ◽  
Health Care Centers

SummaryBackground Hypertension or high blood pressure is on the rise. Not only does it affect the elderly but is also increasingly spreading to younger sectors of the population. Treating this condition involves exhaustive monitoring of patients. The current mobile health services can be improved to perform this task more effectively.Objective To develop a useful, user-friendly, robust and efficient app, to monitor hypertensive patients and adapted to the particular requirements of hypertension.Methods This work presents BPcontrol, an Android and iOS app that allows hypertensive patients to communicate with their health-care centers, thus facilitating monitoring and diagnosis. Usability, robustness and efficiency factors for BPcontrol were evaluated for different devices and operating systems (Android, iOS and system-aware). Furthermore, its features were compared with other similar apps in the literature.Results BPcontrol is robust and user-friendly. The respective start-up efficiency of the Android and iOS versions of BPcontrol were 2.4 and 8.8 times faster than a system-aware app. Similar values were obtained for the communication efficiency (7.25 and 11.75 times faster for the Android and iOS respectively). When comparing plotting performance, BPcontrol was on average 2.25 times faster in the Android case. Most of the apps in the literature have no communication with a server, thus making it impossible to compare their performance with BPcontrol.Conclusions Its optimal design and the good behavior of its facilities make BPcontrol a very promising mobile app for monitoring hypertensive patients.Citation: Carrera A, Pifarré M, Vilaplana J, Cuadrado J, Solsona S, Mateo J, Solsona F. BPcontrol: a mobile app to monitor hypertensive patients

scholarly journals Usability Evaluation of Encyclopedia Websites

2021 ◽  
Vol 11 (1) ◽  
pp. 21-25
Author(s):  
Nor Azman Ismail ◽  
Fadzrul Izwan Jamaluddin ◽  
Akmal Harraz Hamidan ◽  
Ahmad Fariz Ali ◽  
Su Elya Mohamed ◽  
...  
Keyword(s):  
Standard Form ◽  
Usability Testing ◽  
Cost Effective ◽  
Usability Evaluation ◽  
Web Performance ◽  
Testing Tools ◽  
Usability Tests ◽  
Website Analysis ◽  
User Friendly

Usability is an important aspect that every website should focus more. It tells us how well and success website will function with real users. Many people often think usability tests are expensive and time-consuming. It can be a cost-effective and time saver with usability testing instead of spending more time fixing an unusable website. This study evaluates the usability of encyclopedia websites by using automated usability testing tools and questionnaire methods. The questionnaire was developed based on a standard form called Website Analysis and Measurement Inventory (WAMMI) that identified 20 common usability questions divided into five categories. Each category deals with one aspect of usability. Simultaneously, the automated usability testing tools used in this study were Pingdom and GT Metrix to calculate and analyse the website performance of selected encyclopedia websites based on website components including page load time, media size and overall web performance grades. This study could help web designer, developer, and practitioners design better and more user-friendly encyclopedia websites.

Methylphenidate Effect in Children With ADHD Can Be Measured by an Ecologically Valid Continuous Performance Test Embedded in Virtual Reality

CNS Spectrums ◽  
2010 ◽  
Vol 15 (2) ◽  
pp. 125-130 ◽  
Author(s):  
Yehuda Pollak ◽  
Hanan Barhoum Shomaly ◽  
Patrice L. Weiss ◽  
Albert A. Rizzo ◽  
Varda Gross-Tsur
Keyword(s):  
Virtual Reality ◽  
Classroom Environment ◽  
Performance Test ◽  
Assessment Tool ◽  
Similar Degree ◽  
Continuous Performance ◽  
Double Blind ◽  
Children With Adhd ◽  
Feedback Questionnaire ◽  
User Friendly

ABSTRACTBackground: Continuous performance tasks (CPTs) embedded in a virtual reality (VR) classroom environment have been shown to be a sensitive and user-friendly assessment tool to detect cognitive deficits related to attention-deficit/hyperactivity disorder (ADHD). The aim of the current study was to compare the performance of children with ADHD on a VR-CPT while on and off treatment with methylphenidate (MPH) and to compare the VR-CPT to a cgrrently used CPT, Test of Variables of Attention (TOVA).Methods:Twenty-seven children with ADHD underwent the VR-CPT, the same CPT without VR (no VR-CPT), and theTOVA, 1 hour after the. ingestion of either placebo or 0.3 mg/kg MPH, in a double-blind, placebo-controlled, crossover design. Immediately following CPT, subjects described their subjective experiences on the Short Feedback Questionnaire.Results: MPH reduced omission errors to a greater extent on the VR-CPT compared to the no VR-CPT and the TOVA, and decreased other CPT measures on all types of CPT to a similar degree. Children rated the VR-CPT as more enjoyable compared to the other types of CPT.Conclusions: It is concluded that the VR-CPT is a sensitive and user-friendly assessment tool in measuring the response to MPH in children with ADHD.

scholarly journals Visual Display of 5p-arm and 3p-arm miRNA Expression with a Mobile Application

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Chao-Yu Pan ◽  
Wei-Ting Kuo ◽  
Chien-Yuan Chiu ◽  
Wen-chang Lin
Keyword(s):  
Mirna Expression ◽  
Expression Patterns ◽  
Mirna Gene ◽  
Visual Display ◽  
Mature Mirnas ◽  
Mobile App ◽  
The Cancer Genome Atlas ◽  
Rna Seq ◽  
Cancer Genome Atlas ◽  
User Friendly

MicroRNAs (miRNAs) play important roles in human cancers. In previous studies, we have demonstrated that both 5p-arm and 3p-arm of mature miRNAs could be expressed from the same precursor and we further interrogated the 5p-arm and 3p-arm miRNA expression with a comprehensive arm feature annotation list. To assist biologists to visualize the differential 5p-arm and 3p-arm miRNA expression patterns, we utilized a user-friendly mobile App to display. The Cancer Genome Atlas (TCGA) miRNA-Seq expression information. We have collected over 4,500 miRNA-Seq datasets from 15 TCGA cancer types and further processed them with the 5p-arm and 3p-arm annotation analysis pipeline. In order to be displayed with the RNA-Seq Viewer App, annotated 5p-arm and 3p-arm miRNA expression information and miRNA gene loci information were converted into SQLite tables. In this distinct application, for any given miRNA gene, 5p-arm miRNA is illustrated on the top of chromosome ideogram and 3p-arm miRNA is illustrated on the bottom of chromosome ideogram. Users can then easily interrogate the differentially 5p-arm/3p-arm expressed miRNAs with their mobile devices. This study demonstrates the feasibility and utility of RNA-Seq Viewer App in addition to mRNA-Seq data visualization.

B·RIGHT: usability and satisfaction with a mobile app for self-managing emotional crises in patients with borderline personality disorder

2020 ◽  
pp. 103985622092432
Author(s):  
Álvaro Frías ◽  
Carol Palma ◽  
Ana Salvador ◽  
Elena Aluco ◽  
Sara Navarro ◽  
...  
Keyword(s):  
Borderline Personality Disorder ◽  
Personality Disorder ◽  
Emotion Dysregulation ◽  
Borderline Personality ◽  
Mobile App ◽  
Negatively Associated ◽  
System Usability Scale ◽  
Emergency Units ◽  
Symptom List ◽  
User Friendly

Objective: Borderline personality disorder (BPD) is a severe mental disorder characterized by emotional crises. To date, crisis interventions for BPD have been conducted via telephone calls and emergency units, which are associated with an extra amount of resources. The aim of this research was to test the usability and satisfaction with a psychotherapeutic mobile app for self-managing crises in BPD. Method: The B·RIGHT app was designed based on Artificial Intelligence psychotherapeutic algorithms. Usability and satisfaction with the app were assessed in 25 outpatients diagnosed with BPD (84% female, mean age = 35.80 years) using the System Usability Scale (SUS) and other questionnaires. Clinical features were assessed using the Borderline Symptom List, the Difficulties in Emotion Regulation Scale and Beck’s Depression Inventory. Results: Patients with BPD considered the app user-friendly (mean total score = 4.03) and highly satisfactory (mean total score = 4.02), resulting in a positive user experience (mean total score = 4.09). Total usability was negatively associated with age ( r = −.44), positively associated with educational level ( rho = .47) and with overall emotion dysregulation ( r = .51), and negatively associated with depression severity ( r = −.47). Conclusions: The usability and satisfaction testing of the B·RIGHT app showed promising findings, which warrant further research in order to validate its effectiveness.

Sign in / Sign up

Export Citation Format

Share Document