scholarly journals Nanotechnology Applications Towards Sustainable Road Surface Maintenance and Effective Asset Protection, Generating Rapid Employment Opportunities in a Post COVID-19 Era

2022 ◽  
Author(s):  
Gerrit J Jordaan ◽  
Wynand J vdM Steyn
Keyword(s):  
Cost Savings ◽  
Protective Layer ◽  
Ease Of Use ◽  
Road Surface ◽  
Water Repellent ◽  
Asset Protection ◽  
Short Period ◽  
Similar Vein ◽  
Superficial Protection ◽  
Particle Sizer

: Nanotechnology options to road surface maintenance offers several advantages compared to traditionally used materials. The small particle sizer of hydrophobic Nano-Silane modified Nano-Polymers (NSNP) enables these nanotechnology products to deeply penetrate existing road surfaces, sealing micro-cracks and render surfacings to be water-resistant for extended periods of time. In comparison, traditionally used products contain minimum partial sizes of about 1 – 5 microns, that provide a superficial protection that wears off in a relatively short period of time. These traditional products are often associated with vehicle contamination while drying and requires the re-instatement of road markings. None of these disadvantages are associated with applicable NSNP technologies that are quick drying, with no vehicle contamination risks and is equivalent to a “clear-seal” requiring no reinstatement of road markings. In a similar vein, pot-hole repairs can be done using applicable, easy to use, pre-packed and treated pot-hole repair kits that are water-repellent and quick-drying at a fraction of the costs of conventional cold-mix products. Resurfacing using NME binder slurries can be done labour-intensively on a pre-treated NSNP surfacing, restoring cracked surfacing and providing a water-resistant long-lasting protective layer without the removal of existing cracked areas. The implementation of nanotechnology solutions for road surface maintenance operations is directly associated with ease of use, labour-intensive operations, prevention of considerable deterioration in riding quality due to removal and manual re-instatement of cracked surfaces, time and cost savings and a reduction in the risk of water damage to the sub-structure. TRANSLATE with x English ArabicHebrewPolish BulgarianHindiPortuguese CatalanHmong DawRomanian Chinese SimplifiedHungarianRussian Chinese TraditionalIndonesianSlovak CzechItalianSlovenian DanishJapaneseSpanish DutchKlingonSwedish EnglishKoreanThai EstonianLatvianTurkish FinnishLithuanianUkrainian FrenchMalayUrdu GermanMalteseVietnamese GreekNorwegianWelsh Haitian CreolePersian TRANSLATE with COPY THE URL BELOW Back EMBED THE SNIPPET BELOW IN YOUR SITE Enable collaborative features and customize widget: Bing Webmaster Portal Back

scholarly journals Usefulness of Virtual Reality-Based Training to Diagnose Strabismus

2021 ◽  
Author(s):  
Hyun Sik Moon ◽  
Hyeon Jeong Yoon ◽  
Sang Woo Park ◽  
Chae Yeon Kim ◽  
Mu Seok Jeong ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Ease Of Use ◽  
Accuracy Score ◽  
Performance Score ◽  
Deviation Angle ◽  
Short Period ◽  
Before And After ◽  
Vr Training ◽  
And Performance ◽  
Real Patients

Abstract Purpose: To study the usefulness of virtual reality (VR) based training for diagnosing strabismusMethods: Fourteen ophthalmology residents performed at least 30 VR training sessions to diagnose esotropia and exotropia. Examinations of real patients with esotropia or exotropia before and after the VR training were video-recorded and presented to a strabismus expert to assess accuracy and performance scores for measuring the deviation angle and diagnosing strabismus with anonymization. A feedback survey regarding the usefulness and ease of use of the VR application was conducted for participants.Results: The mean age of 14 ophthalmology residents, including 10 men and 4 women, was 29.7 years. Before VR training, participants showed a mean accuracy score of 14.50 ± 5.45 and performance score of 9.64 ± 4.67 for measuring the deviation angle and diagnosing strabismus in real patients with strabismus. After VR training, they showed a significantly improved accuracy score of 22.14 ± 4.37 (p = 0.012) and performance score of 15.50 ± 1.99 (p = 0.011). According to the survey, most participants agreed on the usefulness of VR application.Conclusions: This study suggests that VR based training improves ophthalmology residents’ clinical diagnostic skills for strabismus in a short period.

2-clickAuth

2011 ◽  
Vol 3 (2) ◽  
pp. 1-18
Author(s):  
Anna Vapen ◽  
Nahid Shahmehri
Keyword(s):  
Web Sites ◽  
Identity Management ◽  
Ease Of Use ◽  
Internet Users ◽  
Short Period ◽  
Web Camera ◽  
Single Identity ◽  
Federated Identity Management ◽  
Federated Identity ◽  
Identity Provider

Internet users often have usernames and passwords at multiple web sites. To simplify things, many sites support federated identity management, which enables users to have a single account allowing them to log on to different sites by authenticating to a single identity provider. Most identity providers perform authentication using a username and password. Should these credentials be compromised, all of the user’s accounts become compromised. Therefore a more secure authentication method is desirable. This paper implements 2-clickAuth, a multimedia-based challenge-response solution which uses a web camera and a camera phone for authentication. Two-dimensional barcodes are used for the communication between phone and computer, which allows 2-clickAuth to transfer relatively large amounts of data in a short period of time. 2-clickAuth is more secure than passwords while easy to use and distribute. 2-clickAuth is a viable alternative to passwords in systems where enhanced security is desired, but availability, ease-of-use, and cost cannot be compromised. This paper implements an identity provider in the OpenID federated identity management system that uses 2-clickAuth for authentication, making 2-clickAuth available to all users of sites that support OpenID, including Facebook, Sourceforge, and MySpace.

Learners’ Technological Acceptance of VR Content Development: A Sequential 3-Part Use Case Study of Diverse Post-Secondary Students

2019 ◽  
Vol 13 (03) ◽  
pp. 343-366 ◽  
Author(s):  
Vinh T. Nguyen ◽  
Rebecca Hite ◽  
Tommy Dang
Keyword(s):  
Secondary Students ◽  
Undergraduate Students ◽  
Lessons Learned ◽  
Ease Of Use ◽  
Use Case ◽  
Web Based ◽  
Post Secondary ◽  
Content Development ◽  
Short Period ◽  
Post Secondary Students

Web-based virtual reality (VR) development tools are in ubiquitous use by software developers, and now, university (undergraduate) students, to move beyond using, to creating new and energizing VR content. Web-based VR (WebVR), among other libraries and frameworks, have risen as a low-cost platform for users to create rich and intuitive VR content and applications. However, the success of WebVR as an instructional tool relies on post-secondary students technological acceptance (TA), the intersectionality of a user’s perceived utility (PU) and perceived ease of use (PEOU, or convenience) with said technological tool. Yet, there is a dearth of exploratory studies of students’ experiences with the AR/VR development technologies to infer their TA. To ascertain the viability of WebVR tools for software engineering undergraduates in the classroom, this paper presents a 3-case contextual investigation of 38 undergraduate students tasked with creating VR content. In each use case, students were provided increasing freedom in their VR content development parameters. Results indicated that students demonstrated elements of technological acceptance in their selection of webVR and other platforms, and not only successfully creating rich and robust VR content (PU), but also executing these projects in a short period (PEOU). Other positive externalities observed were students exhibitions of soft skills (e.g. creativity, critical thinking) and different modes of demonstrating coding knowledge, which suggest further study. Discussed are the lessons learned from the WebVR and VR/AR interventions and recommendations for WebVR instruction. This work may be helpful for both learners and teachers using VR/AR in selecting, designing, and developing coursework materials, tools, and libraries.

scholarly journals 348 Virtual Patient Assessment for Hand Fracture Management: A Departmental Analysis of Financial and Clinical Implications

2021 ◽  
Vol 108 (Supplement_2) ◽  
Author(s):  
N Roberts ◽  
J Totty ◽  
R Pinder
Keyword(s):  
Clinical Performance ◽  
Quality Care ◽  
Cost Savings ◽  
Virtual Patient ◽  
British Society ◽  
Patient Assessment ◽  
Pilot Model ◽  
Hand Fractures ◽  
Fracture Management ◽  
Short Period

Abstract Introduction The COVID-19 pandemic demanded reduced face-to-face (FTF) contact. Our department integrated virtual assessment into the incoming referral pathway to enable continuation of high-quality care. This study aimed to assess any potential efficiency benefit of this change in service whilst ensuring no compromise to clinical outcomes. Method A prospective analysis was undertaken of all hand fractures referred virtually during a seven-week period starting at the initiation of national lockdown. Cost analysis using NHS reference costs, inflated to 2019/20 prices, was performed. Clinical performance was assessed using the British Society for Surgery for the Hand (BSSH) Standards for Open and Closed Hand Fractures. Results Seventy-six hand fractures were referred; FTF attendance was avoided in 35 cases, with an estimated per-patient cost saving of £179.16. Of the 33 patients who attended FTF, 13 achieved same day non-operative treatment; 20 underwent operative intervention with 95% compliance to BSSH standards. No complications occurred. Conclusions Our pilot model demonstrates potentially significant cost savings of £6270 over a relatively short period, as well as clinical non-inferiority. This supports sustained integration of virtual patient assessment in the ‘new normal’. Further work across all disciplines is needed to define acceptable limits of telemedicine and new avenues for potential benefit.

scholarly journals Establishing patterns of mass transfer under the action of water on the hydrophobic coating of the fire-retardant element of a tent

2021 ◽  
Vol 4 (10(112)) ◽  
pp. 45-51
Author(s):  
Yuriy Tsapko ◽  
Zinovii Sirko ◽  
Roman Vasylyshyn ◽  
Oleksandr Melnyk ◽  
Аleksii Tsapko ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Fire Protection ◽  
Flame Retardants ◽  
Fire Retardant ◽  
Protective Layer ◽  
Water Repellent ◽  
Water Penetration ◽  
Hydrophobic Coating ◽  
Study Results ◽  
Fabric Surface

This paper reports an analysis of the flame retardants for fabrics that has revealed the fact that the meagerness of data to explain and describe the process of fire protection, specifically the neglect of elastic coatings, leads to that the structures made from fabrics are ignited under the influence of a flame. Devising reliable methods to study the fire protection conditions for fabrics results in the design of new types of fireproof materials. Therefore, there is a need to determine the conditions for the formation of a barrier for water mass transport and to establish a mechanism for slowing down water penetration through the material. In this regard, an estimation-experimental method has been constructed for determining mass transfer under the action of water when using a hydrophobic coating, which makes it possible to assess water penetration. Based on the experimental data and theoretical dependences, the intensity of mass flow under the action of water has been determined, which is 0.000177 kg/m2, which ensures fabric resistance. The study results have proven that the process of waterproofing the fabric involves inhibition of the mass transfer process under the action of water by insulating the surface of the fireproof fabric with a hydrophobic coating. It should be noted that the presence of a hydrophobic coating leads to blocking the fabric surface from moisture penetration. Such a mechanism behind the effect of the hydrophobic coating is likely the factor in adjusting the process through which the integrity of an object is preserved. Thus, the sample of fireproof fabric coated with a water repellent demonstrated, after exposure to water, that the amount of water absorbed did not exceed 0.00012 kg, and, for a fabric without a water repellent, was 0.01 kg. Thus, there is reason to assert the possibility of targeted adjustment of the processes related to water penetration of the fabric by using hydrophobic coatings that could form a protective layer on the surface of the material, which inhibits the rate of water penetration.

scholarly journals Online Education in HEIs in Bangladesh moderated by COVID-19: Modified UTAUT2

2021 ◽  
Vol 20 (4) ◽  
pp. 133-141
Author(s):  
S A M Manzur Hossain Khan ◽  
Nurakmal Ahmad Mustaffa ◽  
Md. Mamun Habib
Keyword(s):  
Online Education ◽  
Behavioral Intention ◽  
Online Teaching ◽  
Private Universities ◽  
Ease Of Use ◽  
Learning Platform ◽  
Short Period ◽  
Teaching Learning ◽  
Use Behavior ◽  
The Impact

The whole world, including Bangladesh is brought to a standstill by the pandemic of COVID-19.  All the hustling-bustling of a densely populated country has come to a quiescent halt; the only sound remaining is the whisper of anxiety. The HEIs in Bangladesh is also struggled to react to this sudden catastrophe; magnified by uncertainties.  Compared to public universities, the private universities of the country managed to react the fastest and are making sweeping changes in a very short period of time, shifting traditional face-to-face course content/teaching to online content/teaching. The shift to fully functional online teaching learning platform was sudden and with minimum preparation. To investigate the perception of the private universities community in Bangladesh with this new teaching learning method, this paper adopted the Unified Theory of Acceptance and Use of Technology (UTAUT) model, focuses on stakeholders’ behavioral intention, availability of the online platform, prior experience, attitude towards usage (ease of use and usefulness) and most importantly the impact of COVID-19 pandemic. Additionally, the paper also discusses the issues of social and cultural impact. It was found that all the UTAUT attributes are positively correlated with the Behavioral Intention and eventually to Use Behavior of students in adopting online education. Moreover, unexpected, and unprecedented impact of COVID-19 pandemic also effected their behavioral intention towards accepting online education.

scholarly journals Usefulness of virtual reality-based training to diagnose strabismus

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hyun Sik Moon ◽  
Hyeon Jeong Yoon ◽  
Sang Woo Park ◽  
Chae Yeon Kim ◽  
Mu Seok Jeong ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Ease Of Use ◽  
Accuracy Score ◽  
Performance Score ◽  
Deviation Angle ◽  
Short Period ◽  
Before And After ◽  
Vr Training ◽  
Real Patients ◽  
A Performance

AbstractTo study the usefulness of virtual reality (VR)-based training for diagnosing strabismus. Fourteen residents in ophthalmology performed at least 30 VR training sessions to diagnose esotropia and exotropia. Examinations of real patients with esotropia or exotropia before and after the VR training were video-recorded and presented to a strabismus expert to assess accuracy and performance scores for measuring the deviation angle and diagnosing strabismus with anonymization. A feedback survey regarding the usefulness and ease of use of the VR application was conducted for participants. The mean age of the 14 ophthalmology residents (10 men and 4 women), was 29.7 years. Before VR training, participants showed a mean accuracy score of 14.50 ± 5.45 and a performance score of 9.64 ± 4.67 for measuring the deviation angle and diagnosing strabismus in real patients with strabismus. After VR training, they showed a significantly improved accuracy score of 22.14 ± 4.37 (p = 0.012) and a performance score of 15.50 ± 1.99 (p = 0.011). According to the survey, most participants agreed on the usefulness of VR applications. This study suggests that VR-based training improved ophthalmology residents’ clinical diagnostic skills for strabismus in a short period.

scholarly journals Management of Malignant Pleural Effusion with ASEPT® Pleural Catheter: Quality of Life, Feasibility, and Patient Satisfaction

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Inderdeep Dhaliwal ◽  
Masoud Mahdavian ◽  
Shabnam Asghari ◽  
Benson Chun To Wong ◽  
Rosalie Labelle ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Time Management ◽  
Cost Savings ◽  
Ease Of Use ◽  
Effective Option ◽  
Eortc Qlq C30 ◽  
Pleural Catheter ◽  
Eortc Qlq

Objective. The PleurX® IPC system has been used extensively in the past. Over time, management of MPE with the PleurX system can be costly. The new ASEPT pleural catheter, through advantages in design, may ultimately show cost savings. The primary outcome of this study was to evaluate safety and efficacy of the ASEPT system.Method. This single centre, prospective study enrolled 50 patients with MPE, who were followed for as long as they were alive with a catheter. Quality of Life (QoL) was assessed before, at 2 weeks, and 6 weeks after ASEPT catheter insertion using the EORTC QLQ-C30 and LC13 questionnaires. Ease of catheter use and complications were reported by physician and community nurses.Results. 50 patients with MPE with a mean age of64.5±1.9, BDI of2.8±0.9, and ECOG score of3.0±0.7were recruited. No immediate or long-term complications were reported during the study period. Compared to precatheter insertion, global health status (−18,p<0.001), QLQ-C30 dyspnea (−39,p<0.00001), and LC13 dyspnea (−11,p<0.0005) significantly improved at 2 and 6 weeks after intervention. Provider surveys indicated favourable ease of use.Conclusion. The new ASEPT catheter offers a safe and effective option for the management of MPE.

Computing Body Segment Trajectories in the Hybrid III Dummy Using Linear Accelerometer Data

1994 ◽  
Vol 116 (1) ◽  
pp. 37-43 ◽  
Author(s):  
Rex T. Shea ◽  
David C. Viano
Keyword(s):  
High Speed ◽  
Angular Displacement ◽  
Angular Acceleration ◽  
Cost Savings ◽  
Accelerometer Data ◽  
Short Period ◽  
Planar Trajectory ◽  
Hybrid Iii ◽  
High Speed Film ◽  
New Generation

An analytical method was developed and tested using several mini-sled and Hyge sled tests to calculate the planar trajectory of a Hybrid III dummy head. Aimed at expediting the Hybrid III test analyses, it may provide an opportunity for cost savings through reduced hardware and manpower on film analyses. Transformation from the moving coordinate to the laboratory coordinate is based on the angular positions integrated from the derived angular accelerations. Gravitational correction of the linear accelerometers was found to be insignificant. The computed head trajectories were compared to the ones obtained from the high speed film images. Accuracy of the calculated head trajectory relies heavily on the accuracy of the computed angular acceleration. Strain-gaged accelerometers are not dependable at all times during an impact and an ill-behaved signal for a very short period may create a significant drift in computed displacement due to double integrations. Accuracy of the currently available accelerometers is not high enough for an angular displacement calculation. A new generation of accelerometers with higher accuracy, or an angular velocity sensor may provide more accurate angular displacement for trajectory analyses. The redundancy of the in-line accelerations helps improve the isolation of erroneous outputs and improve accuracy of the procedure.

scholarly journals Using Open Educational Resources at Viterbo University: Faculty and Student Feedback

2021 ◽  
Vol 22 (1) ◽  
pp. 78-90
Author(s):  
Alissa L. Oelfke ◽  
Jennifer A. Sadowski ◽  
Cari Mathwig Ramseier ◽  
Christopher Iremonger ◽  
Katrina Volkert ◽  
...  
Keyword(s):  
Environmental Science ◽  
Cost Savings ◽  
Implementation Process ◽  
Open Educational Resources ◽  
Ease Of Use ◽  
Educational Resources ◽  
Older Students ◽  
Quality Cost ◽  
Pilot Implementation

This study evaluated a coordinated and collaborative pilot implementation of open educational resources (OER) across multiple disciplines including nursing, accounting, environmental science, religious studies, and finance. Participating faculty were qualitatively surveyed regarding their experience creating and implementing OER in a course. Students were surveyed on their perceptions of OER quality, cost savings, and ease of use. Faculty had an overall positive experience with OER, believing there was a significant benefit to students in cost savings while maintaining learning quality. Faculty felt the OER implementation process took a significant investment of time and recommended that faculty should be compensated for creating and implementing OER materials in future courses. Students overall showed positive responses to using OER in their course; the majority of students agreed with the OER cost savings, quality of OER resources, ease of using OER, and they trusted the use of OER materials. Older students (over 30 years) were more likely to state they would print out OER materials rather than read them online (as compared with students 30 and under). Senior-level students agreed significantly more than did freshman-level students that OER presented a cost savings. Faculty recommendations from this study included focusing on courses with very high textbook costs and courses that would impact the greatest number of students. Additionally, faculty recommended a follow-up revision process to keep OER materials current after implementation.

Sign in / Sign up

Export Citation Format

Share Document