scholarly journals Development of a Human-Display Interface with Vibrotactile Feedback for Real-World Assistive Applications

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 592
Author(s):  
Kiduk Kim ◽  
Ji-Hoon Jeong ◽  
Jeong-Hyun Cho ◽  
Sunghyun Kim ◽  
Jeonggoo Kang ◽  
...  

It is important to operate devices with control panels and touch screens assisted by haptic feedback in mobile environments such as driving automobiles and electric power wheelchairs. A lot of consideration is needed to give accurate haptic feedback, especially, presenting clear touch feedback to the elderly and people with reduced sensation is a very critical issue from healthcare and safety perspectives. In this study, we aimed to identify the perceptual characteristics for the frequency and direction of haptic vibration on the touch screen with vehicle-driving vibration and to propose an efficient haptic system based on these characteristics. As a result, we demonstrated that the detection threshold shift decreased at frequencies above 210 Hz due to the contact pressure during active touch, but the detection threshold shift increased at below 210 Hz. We found that the detection thresholds were 0.30–0.45 gpeak with similar sensitivity in the 80–270 Hz range. The haptic system implemented by reflecting the experimental results achieved characteristics suitable for use scenarios in automobiles. Ultimately, it could provide practical guidelines for the development of touch screens to give accurate touch feedback in the real-world environment.

Water ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 818
Author(s):  
Markus Reisenbüchler ◽  
Minh Duc Bui ◽  
Peter Rutschmann

Reservoir sedimentation is a critical issue worldwide, resulting in reduced storage volumes and, thus, reservoir efficiency. Moreover, sedimentation can also increase the flood risk at related facilities. In some cases, drawdown flushing of the reservoir is an appropriate management tool. However, there are various options as to how and when to perform such flushing, which should be optimized in order to maximize its efficiency and effectiveness. This paper proposes an innovative concept, based on an artificial neural network (ANN), to predict the volume of sediment flushed from the reservoir given distinct input parameters. The results obtained from a real-world study area indicate that there is a close correlation between the inputs—including peak discharge and duration of flushing—and the output (i.e., the volume of sediment). The developed ANN can readily be applied at the real-world study site, as a decision-support system for hydropower operators.


Designs ◽  
2019 ◽  
Vol 3 (2) ◽  
pp. 23 ◽  
Author(s):  
Christos Panagopoulos ◽  
Andreas Menychtas ◽  
Panayiotis Tsanakas ◽  
Ilias Maglogiannis

As the world’s population is ageing, the field dealing with technology adoption by seniors has made headway in the scientific community. Recent technological advances have enabled the development of intelligent homecare systems that support seniors’ independent living and allow monitoring of their health status. However, despite the amount of research to understand the requirements of systems designed for the elderly, there are still unresolved usability issues that often prevent seniors from enjoying the benefits that modern ICT technologies may offer. This work presents a usability assessment of “HeartAround”, an integrated homecare solution incorporating communication functionalities, as well as health monitoring and emergency response features. An assessment with the system usability scale (SUS) method, along with in-depth interviews and qualitative analysis, has provided valuable insights for designing homecare systems for seniors, and validated some effective practical guidelines.


Author(s):  
Jennifer Louten

Student retention is a critical issue for universities, and nearly half of the students who start degree programs in science, technology, engineering, and mathematics (STEM) do not complete them. The current study tracks the progress of STEM students taking part in an entry-to-graduation program designed to build community, provide academic and social support, and promote engagement in academically purposeful activities. Although it had no effect on the number of students who changed their major, the program more than doubled the number of students who graduated in their original major. Black or Hispanic students taking part in the program also graduated at twice the rate of comparator students, largely attributable to the success of women in these groups. The results provide needed real-world insights into how to create an equitable environment that promotes the persistence and graduation of students, including those from groups historically underrepresented in STEM.


2018 ◽  
Vol 2018 ◽  
pp. 1-20 ◽  
Author(s):  
Markus Bajones ◽  
David Fischinger ◽  
Astrid Weiss ◽  
Daniel Wolf ◽  
Markus Vincze ◽  
...  

We present the robot developed within the Hobbit project, a socially assistive service robot aiming at the challenge of enabling prolonged independent living of elderly people in their own homes. We present the second prototype (Hobbit PT2) in terms of hardware and functionality improvements following first user studies. Our main contribution lies within the description of all components developed within the Hobbit project, leading to autonomous operation of 371 days during field trials in Austria, Greece, and Sweden. In these field trials, we studied how 18 elderly users (aged 75 years and older) lived with the autonomously interacting service robot over multiple weeks. To the best of our knowledge, this is the first time a multifunctional, low-cost service robot equipped with a manipulator was studied and evaluated for several weeks under real-world conditions. We show that Hobbit’s adaptive approach towards the user increasingly eased the interaction between the users and Hobbit. We provide lessons learned regarding the need for adaptive behavior coordination, support during emergency situations, and clear communication of robotic actions and their consequences for fellow researchers who are developing an autonomous, low-cost service robot designed to interact with their users in domestic contexts. Our trials show the necessity to move out into actual user homes, as only there can we encounter issues such as misinterpretation of actions during unscripted human-robot interaction.


Aging ◽  
2020 ◽  
Vol 12 (19) ◽  
pp. 19711-19739
Author(s):  
Floor Swart ◽  
Giampaolo Bianchi ◽  
Jacopo Lenzi ◽  
Marica Iommi ◽  
Lorenzo Maestri ◽  
...  

BMJ Open ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. e029862 ◽  
Author(s):  
Seung Jae Kim ◽  
Oh Deog Kwon ◽  
BeLong Cho ◽  
Seung-Won Oh ◽  
Cheol Min Lee ◽  
...  

ObjectivesWe tried to clarify, by using representative national data in a real-world setting, whether single-pill combinations (SPCs) of antihypertensives actually improve medication adherence.DesignA nationwide population-based study.SettingWe used a 2.2% cohort (n=1 048 061) of the total population (n=46 605 433) that was randomly extracted by National Health Insurance of Korea from 2008 to 2013.ParticipantsWe included patients (n=116 677) who were prescribed with the same antihypertensive drugs for at least 1 year and divided them into groups of angiotensin II receptor blocker (ARB)-only, calcium channel blocker (CCB)-only, multiple-pill combinations (MPCs) and SPCs of ARB/CCB.Primary outcome measuresMedication possession ratio (MPR), a frequently used indirect measurement method of medication adherence.ResultsAdjusted MPR was higher in combination therapy (89.7% in SPC, 87.2% in MPC) than monotherapy (81.6% in ARB, 79.7% in CCB), and MPR of SPC (89.7%, 95% CI 89.3 to 90.0) was higher than MPR of MPC (87.2%, 95% CI 86.7 to 87.7) (p<0.05). In subgroup analysis, adherence of SPC and MPC was 92.3% (95% CI 91.5 to 93.0) vs 88.1% (95% CI 87.1 to 89.0) in those aged 65–74 years and 89.3% (95% CI 88.0 to 90.7) vs 84.8% (95% CI 83.3 to 92.0) in those ≥75 years (p<0.05). According to total pill numbers, adherence of SPC and MPC was 90.9% (CI 89.8 to 92.0) vs 85.3% (95% CI 84.1 to 86.5) in seven to eight pills and 91.2% (95% CI 89.3 to 93.1) vs 82.5% (95% CI 80.6 to 84.4) in nine or more (p<0.05). The adherence difference between SPC and MPC started to increase at five to six pills and at age 50–64 years (p<0.05). When analysed according to elderly status, the adherence difference started to increase at three to four pills in the elderly (≥65 years) and at five to six in the non-elderly group (20–64 years) (p<0.05). These differences all widened further with increasing age and the total medications.ConclusionSPC regimens demonstrated higher adherence than MPC, and this tendency is more pronounced with increasing age and the total number of medications.


1998 ◽  
Vol 20 (2) ◽  
pp. 11-13 ◽  
Author(s):  
Renee Shield

Anthropologists have a unique opportunity to address real-world issues of aging in our own country. In graduate school I decided to redirect an ethnomusicological interest in ritual performance into an anthropological perspective on the subject of age. For one thing, as a new parent, I realized I was aging. Performance based questions in ethnomusicological suggested a lens through which to view aging. I did my dissertation on an American nursing home, applying concepts of rites of passage, performance and reciprocity to understand the behavior and the perspectives of nursing home participants. In subsequent years I have had two more opportunities to use the anthropologic lens to focus on aging in Rhode Island, first, as an educator in a nursing home and, second, as a participant in a health care reform project for the elderly of Rhode Island.


2010 ◽  
Vol 18 (1) ◽  
pp. 26-33 ◽  
Author(s):  
Vikas Dudeja ◽  
Elizabeth B. Habermann ◽  
Wei Zhong ◽  
Todd M. Tuttle ◽  
Selwyn M. Vickers ◽  
...  

2019 ◽  
Vol 90 (e7) ◽  
pp. A28.1-A28
Author(s):  
Stacey K Jankelowitz ◽  
Kylie Tastula ◽  
Nicola Mitchell ◽  
Patrick Tang ◽  
Tim Ang ◽  
...  

IntroductionAcross multicentre trials ECR is safe and effective in octogenarians. Despite RCT evidence elderly patients may be denied ECR due to perceived poor risk-benefit. We examine impact of age on ECR outcomes and outcomes in transcatheter aortic valve implantation (TAVI) cases (where stroke risk is high), in a real world setting.MethodsWe analysed 311 consecutive ECR cases between 2016 and 2019 in 10 year age bands for ECR outcomes including 90 day mRS and mortality. Impact of premorbid function (mRS), NIHSS, recorded co-morbidities, and aetiology was assessed. TAVI case outcomes were examined.ResultsThirty one percent of ECR outcome cases were over 79 years of age; 90 day mortality was 34%; 25% had a 90 day mRS 0–2. Early NIHSS improvement was 5. Ninety-day mortality and mRS 0–2 for 10–19 (n=3), 20–29 (n=2), 30–39 (n=4), 40–49 (n=23), 50–59 (n=27), 60–69 (n=69), 70–79 (n=84),80–89 (n=62) and 90–99 (n=11) years were 0 and 100%, 0 and 100%, 33 and 67%, 4 and 78%, 15 and 52%, 13 and 49%, 17 and 33%, 24 and 2% and 55 and 18%, respectively. There was 9% lost to follow-up.Six TAVI cases had a NIHSS of 8–20 and pre-morbid mRS<3, four with mRS 0. Mean 24 hour NIHSS improvement was 8.ConclusionWithout age exclusions older patients had worse unadjusted outcomes. However, patients over 79 years had clinically important early improvement in NIHSS score and ninety day outcomes were comparable to favourable RCT data and TAVI patients also had early improvement.


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