scholarly journals Analysing Balance Loss in VR Interaction with HMDs

2018 ◽  
Vol 9 (2) ◽  
pp. 1
Author(s):  
Armando Martinez ◽  
Antonio Iyda Paganelli ◽  
Alberto Raposo
Keyword(s):  
Immersive Virtual Reality ◽  
Kinect Sensor ◽  
High Quality ◽  
Psychological Treatments ◽  
Loss Of Balance ◽  
Risk Of Falls ◽  
Risk Of Fall ◽  
Ms Kinect ◽  
Balance Loss ◽  
Different Levels

Immersive virtual reality (VR) has been used in different fields such as training, educational programs, entertainment, psychological treatments, and rehabilitation. Despite its broad utilization, some issues limit its application such as the loss of balance. Balance is disturbed because visual stimuli received from the virtual scenario are not in harmony with perceived stimuli by the proprioception and vestibular systems that remain in contact with the real environment. With the increasing popularity and accessibility of high-quality VR systems, concerns have been raised about the propensity of VR to induce balance loss. Balance is essential for safe use of VR experience and its loss can result in severe injury. In this work, we present a methodology and the necessary tools to quantify the influence of VR on the user’s balance and assess risk of falls during VR interaction. By means of an experiment making use of an Oculus Rift and a MS Kinect Sensor, we observe, quantify and compare the effect of VR scenes with different levels of danger on the balance of users, as well as the effect of visual and auditory warnings of balance loss. Results suggest that auditory signs were not effective in warning users about risk of fall, and that the order which the scenes are presented to users affects their behavior. Users who were first presented to a more challenging scene proceeded more carefully and most of the time carried this behavior to the other less challenging scenes.

Treatment of vertebral fractures due to osteoporosis

2015 ◽  
Vol 24 (01) ◽  
pp. 7-10 ◽  
Author(s):  
M. Pfeifer ◽  
M. Sinaki
Keyword(s):  
Exercise Program ◽  
Therapeutic Exercise ◽  
Training Support ◽  
Axial Stability ◽  
Extensor Muscles ◽  
Therapeutic Exercises ◽  
Increase Risk ◽  
Risk Of Falls ◽  
Risk Of Fall

SummaryThe objective of exercise in the treatment of osteoporosis is to improve axial stability through strengthening of back extensor muscles. Therefore, a back extension exercise program specific to one’s musculoskeletal competence and pain can be performed in a sitting position and later advanced to the prone position. When fragility is resolved, back extension is performed against resistance applied to the upper back. A significant reduction in back pain, kyphosis, and risk of falls and an improvement in the level of physical activity have been achieved through the SPEED (Spinal Proprioceptive Extension Exercise Dynamic) program. In addition, the application of a “Posture Training Support” (PTS) using a backpack may decrease kyphosis and pain related not only to compression fractures but also reduce iliocostal friction. Therapeutic exercise should address osteo - porosis-related deformities of axial posture, which can increase risk of fall and fracture. Thus, the role of a therapeutic exercise program is to increase muscle strength safely, decrease immobility-related complications, and prevent fall and fracture. As with pharmacotherapy, therapeutic exercises are individualized.

scholarly journals Institutions, Norms, and Accountability: A Corruption Experiment with Northern and Southern Italians

2017 ◽  
Vol 5 (1) ◽  
pp. 11-25 ◽  
Author(s):  
Nan Zhang
Keyword(s):  
Laboratory Experiment ◽  
Everyday Life ◽  
Institutional Environments ◽  
High Quality ◽  
Group I ◽  
Two Populations ◽  
Different Levels ◽  
Quality Enforcement

AbstractAnti-corruption research has highlighted the potential for grassroots monitoring to improve governance outcomes, but the conditions under which citizens are willing to report bribery remain under-studied. Are individuals from some societies socialized into a “culture of corruption” that makes them more accepting of malfeasance, or is the failure to denounce wrongdoing simply a response to low-quality enforcement institutions? I conduct a laboratory experiment to examine how the propensity to report corruption differs between Northern and Southern Italians, two populations experiencing different levels of corruption in everyday life. For each group, I experimentally manipulate the quality of enforcement institutions. When given high-quality institutions, all participants are more willing to report corruption. Moreover, Southerners and Northerners behave similarly when placed within the same institutional environments. These results suggest that high-corruption societies are not “culturally” predisposed to tolerate malfeasance. Rather, improving the capacity of enforcement institutions may significantly strengthen accountability norms.

Does the Management of Visual and Audible Motion Information during an Immersive Virtual Reality Timed Up and Go Test Impact Locomotor Performance in the Elderly?

Gerontology ◽  
2021 ◽  
pp. 1-9
Author(s):  
Frédéric Muhla ◽  
Karine Duclos ◽  
Fabien Clanché ◽  
Philippe Meyer ◽  
Séverine Maïaux ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Motor Control ◽  
Optical Flow ◽  
Fear Of Falling ◽  
The Elderly ◽  
Public Health Issue ◽  
Immersive Virtual Reality ◽  
Timed Up And Go ◽  
Friedman's Test ◽  
Risk Of Falls

<b><i>Background/Aims:</i></b> Falling among the elderly is a major public health issue, especially with the advancing age of the baby boomers. The fall risk assessment tests for many lack a context that would bring them closer to everyday life. Thus, immersive virtual reality, which makes it possible to simulate everyday situations, could make it possible to strengthen the quality of the assessment of the risk of falls. However, it is necessary to understand how the use of a virtual reality device influences the motor control of elderly participants. If vestibular physiotherapists use VR to virtualize their tools, what impact would a visual simulation of movement have on motor control in a locomotor task, if this simulation were plausible? <b><i>Methods:</i></b> Sixty-two elders (70.8 ± 6.7 years old) completed a Timed Up and Go task under 3 conditions: real, virtual reality, and virtual reality with visual and sound movement information. The virtual reality task takes place in a train either stationary at a station or in uniform linear motion. The time and number of steps were recorded using video, and comparisons between conditions were made using Friedman’s test. <b><i>Results:</i></b> The results show a significant increase in the time and number of steps in “virtual reality” condition compared to the “real” condition. They do not show significant differences between the 2 virtual conditions. <b><i>Conclusion:</i></b> The use of a running virtual train to provide plausible movement is particularly distinguished from vestibular physiotherapy applications with first a fixed visual support partially obscuring the optical flow. This visual aid coupled with the attention dedicated to the task inhibits the effect of the moving environment on locomotion. However, the visual optical flow will potentially have an effect in people with fear of falling. Virtual reality shows great potential for the simulation of realistic environments for the assessment of the risk of falls and opens up avenues for the development of tests.

Prevalence of High Risk of Falls among Elderly in Old Age Homes of Aurangabad, Maharashtra, India

2021 ◽  
Vol 11 (8) ◽  
pp. 61-66
Author(s):  
Shagun S. Kamble ◽  
Gaurav C. Mhaske
Keyword(s):  
High Risk ◽  
Old Age ◽  
Balance Test ◽  
Geriatric Population ◽  
Chair Stand ◽  
Stand Test ◽  
Chair Stand Test ◽  
Risk Of Falls ◽  
Risk Of Fall ◽  
Old Age Homes

Background - Falls are one of the measure concerns in geriatric population resulting in unintentional coming to rest on the ground. Majority of falls are multifactorial which commonly results in morbidity and mortality in rare cases. The aim of our study was to estimate the prevalence of high risk of falls in elderly in old age homes. Method -An observational study involving 140 participants in old age homes of Aurangabad, Maharashtra, India were selected by convenient sampling and prevalence was assessed by using TUG test, 30 second chair stand test, 4-stage balance test. Result – prevalence of high fall risk which impacted the physical capabilities and quality of life of elderly were 52.85%, 47.85%,55.71% according to TUG test, 30 second chair stand test, and 4 stage balance Test. Conclusion – Falls are major concern among elderly living in old age homes of Aurangabad. Our findings may assist the geriatric healthcare system to take early measures for elderly to prevent falls and spread awareness. Key words: Prevalence, Risk of fall, elderly, old age homes, TUG, 30 sec chair stand test, 4 stage balance Test, Aurangabad.

Language of Modern Advertising

2019 ◽  
pp. 170-174
Author(s):  
Iryna Kolesnikova
Keyword(s):  
Professional Communication ◽  
Literary Language ◽  
Place Names ◽  
High Quality ◽  
Foreign Origin ◽  
Professional Occupation ◽  
Different Levels

Professional language is a universal tool of specialists’ communication. Every professional language has its specificity at different levels. They are terminology, genre features of texts, ethics of professional communication etc. However, none of these languages can be an antagonist of literary language. Violation of the standards of literary language, intellectual imbalance between the advertiser’s IQ and the consumer, the existence of negative connotations and emotions, failure to reach advertiser’s intentions; unsuccessful linguistic design of advertising product, violation of ethics of communication with the client; failed branding; inappropriate neologisms; wrong semantics towards words of foreign origin, famous to place names, onyms, dubious creativity are typical features of language. The specialist in language of advertising (“lingvoreklamist”) is an expert in the language of copywriting. His professional occupation allows not only to make professional re-branding and to find both linguistic and intellectual mistakes in an advertising text, but also to find a name for the company or institution according to their specialty. It means that he work as trouble-shooter in order to make advertising product of high quality.

scholarly journals Predictors of efficacy in depression prevention programmes

2003 ◽  
Vol 183 (5) ◽  
pp. 384-397 ◽  
Author(s):  
Eva Jané-Llopis ◽  
Clemens Hosman ◽  
Rachel Jenkins ◽  
Peter Anderson
Keyword(s):  
Depressive Symptoms ◽  
Research Design ◽  
Psychiatric Symptoms ◽  
Meta Analysis ◽  
Age Groups ◽  
High Quality ◽  
Prevention Programmes ◽  
Quality Of Research ◽  
Different Levels

BackgroundWorldwide, 340 million people are affected by depression, with high comorbid, social and economic costs.AimsTo identify potential predictors of effect in prevention programmes.MethodA meta-analysis was made of 69 programmes to reduce depression or depressive symptoms.ResultsThe weighted mean effect size of 0.22 was effective for different age groups and different levels of risk, and in reducing risk factors and depressive or psychiatric symptoms. Programmes with larger effect sizes were multi-component, included competence techniques, had more than eight sessions, had sessions 60–90 min long, had a high quality of research design and were delivered by a health care provider in targeted programmes. Older people benefited from social support, whereas behavioural methods were detrimental.ConclusionsAn 11% improvement in depressive symptoms can be achieved through prevention programmes. Single trial evaluations should ensure high quality of the research design and detailed reporting of results and potential predictors.

scholarly journals Analysis of Tactical, Decisional and Executional Behaviour According to the Level of Expertise in Squash

2018 ◽  
Vol 61 (1) ◽  
pp. 227-240 ◽  
Author(s):  
María Catalán-Eslava ◽  
Sixto González-Víllora ◽  
Juan C. Pastor-Vicedo ◽  
Onofre R. Contreras-Jordán
Keyword(s):  
Decision Making ◽  
Performance Evaluation ◽  
Athletic Performance ◽  
Regional Level ◽  
Correct Decision ◽  
Evaluation Tool ◽  
High Quality ◽  
Provincial Level ◽  
Four Levels ◽  
Different Levels

Abstract The objective of this study was to analyse the differences in tactical principles, decision-making and execution of the return shot and drop shot of squash players at different levels of proficiency. The sample was composed of 80 players, divided into four levels of expertise (first national category, second national category, autonomous regional level and provincial level). The Squash Performance Evaluation Tool was used for recording the level of decision-making and execution. The results revealed that reading of the context of the game improved as the level of the player’s expertise of both the return shot and the drop shot increased. The correlation between correct decision-making and better quality execution for both the return shot and the drop shot in squash also improved with the player’s level of expertise. According to these results, improvements in situational tactical principles and the application of tactical principles, correct decision-making and high-quality execution are essential to develop the athletic performance level among squash players.

scholarly journals DualFace: Two-stage drawing guidance for freehand portrait sketching

2021 ◽  
Vol 8 (1) ◽  
pp. 63-77
Author(s):  
Zhengyu Huang ◽  
Yichen Peng ◽  
Tomohiro Hibino ◽  
Chunqi Zhao ◽  
Haoran Xie ◽  
...  
Keyword(s):  
User Study ◽  
High Quality ◽  
Contour Lines ◽  
Global Guidance ◽  
Face Contour ◽  
Artistic Training ◽  
Portrait Drawing ◽  
Two Stages ◽  
Global And Local ◽  
Different Levels

AbstractSpecial skills are required in portrait painting, such as imagining geometric structures and facial detail for final portrait designs. This makes it a difficult task for users, especially novices without prior artistic training, to draw freehand portraits with high-quality details. In this paper, we propose dualFace, a portrait drawing interface to assist users with different levels of drawing skills to complete recognizable and authentic face sketches. Inspired by traditional artist workflows for portrait drawing, dualFace gives two-stages of drawing assistance to provide global and local visual guidance. The former helps users draw contour lines for portraits (i.e., geometric structure), and the latter helps users draw details of facial parts, which conform to the user-drawn contour lines. In the global guidance stage, the user draws several contour lines, and dualFace then searches for several relevant images from an internal database and displays the suggested face contour lines on the background of the canvas. In the local guidance stage, we synthesize detailed portrait images with a deep generative model from user-drawn contour lines, and then use the synthesized results as detailed drawing guidance. We conducted a user study to verify the effectiveness of dualFace, which confirms that dualFace significantly helps users to produce a detailed portrait sketch.

Furion: Engineering High-Quality Immersive Virtual Reality on Today's Mobile Devices

2020 ◽  
Vol 19 (7) ◽  
pp. 1586-1602 ◽  
Author(s):  
Zeqi Lai ◽  
Y. Charlie Hu ◽  
Yong Cui ◽  
Linhui Sun ◽  
Ningwei Dai ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Mobile Devices ◽  
Immersive Virtual Reality ◽  
High Quality

Effect of dietary protein and energy concentration on the fattening performance of buffalo male calves in southern Iran

2003 ◽  
Vol 2003 ◽  
pp. 109-109
Author(s):  
H. Mahmoudzadeh ◽  
H. Fazaeli ◽  
I. Kord-Nejad
Keyword(s):  
Nutritional Status ◽  
Dietary Protein ◽  
Nitrogen Concentration ◽  
Nutrient Utilization ◽  
Energy Concentration ◽  
Nutrient Requirements ◽  
Buffalo Calves ◽  
High Quality ◽  
Local Environments ◽  
Different Levels

During the last decade, development of the buffalo industry has been undertaken in Iran. The prospects for beef production from buffalo management have shown to be successful under local environments. Buffaloes reared under feedlot conditions with suitable diets have the potential to produce high quality carcass (Udeybir and Mandal, 2001). In terms of nutrition, studies are needed for the validation of nutrient requirements (especially protein and energy) for different physiological stages. A system to monitor the nutritional status of buffaloes would be beneficial to reduce losses and maximize efficiency of nutrient utilization. To optimise protein efficiency and reduce nitrogen wastage, diets need to be formulated to provide optimum nitrogen concentration for maximum rumen microbial yield and growth. However, limited work has been reported on nutrient requirements of growing and fattening buffalo calves. The objective of this work was to study the response of Iranian buffalo male calves to the different levels of energy and protein in the diet from 12 to 18 months of age.

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