FATIGUE ASSESSMENT OF THE VISUAL ANALYZER OF MULTIMONITOR SYSTEMS OPERATORS

2021 ◽  
Author(s):  
A.G. Merkulova ◽  
◽  
S.A. Kalinina ◽  
M.V. Skavronskaya ◽  
Keyword(s):  
Objective Assessment ◽  
Image Transmission ◽  
Subjective Assessment ◽  
Labor Intensity ◽  
Visual Analyzer ◽  
Visual Fatigue ◽  
Perception Time ◽  
Ergonomic Analysis ◽  
Contrast Perception ◽  
Office Furniture

Abstract: Introduction. Working at a computer is associated with an intense cognitive load and an increased load on the visual analyzer due to the peculiarities of the screen image transmission. From 60 to 90% of users suffer from computer visual syndrome, more than 40% experience visual discomfort. If it is necessary to use several software windows in the workplace, multimonitor systems are increasingly used, however, there is still no data on their effect on the visual analyzer. Research objective. Assessment of the state of the visual analyzer of multimonitor systems operators in the dynamics of the work shift. Materials and methods. The study involved 26 operators of multimonitor systems (age 36.7 ± 8.3 years, experience 5.8 ± 3.0 years). The assessment of labor intensity in accordance with the Guidelines R 2.2.2006-05 and ergonomic analysis of workplaces were carried out. The functional state of the visual analyzer was assessed using eye tracking, accommodometry, sequential contrast perception time, subjective assessment of asthenopia symptoms. Research results. The labor intensity of operators of multimonitor systems corresponds to class 3.2. Ergonomic assessment of workplaces indicates irregularities in the arrangement of equipment and office furniture. There were no statistically significant differences in the indicators of oculomotor activity in the dynamics of the shift, while low values of the frequency of blinking were noted only in workers with an irrationally organized workplace, as well as when observing one monitor. By the end of the shift, the volume of accommodation decreased by 19.0%, the time of perception of sequential contrast by 15.3%, the most pronounced symptoms of asthenopia were general and visual fatigue. Conclusions. The use of multimonitor systems leads to the development of asthenopia by the end of the shift, however, the decrease in the volume of accommodation and the time of perception of consistent contrast are more pronounced in workers with one monitor. Due to the impossibility of changing the work process and reducing the class of NT, workers should pay special attention to the ergonomic characteristics of the workplace, compliance with work and rest regimes, prevention of the development of asthenopia and general fatigue.

An endoscopic approach to the deviated nasal septum – a preliminary study

1998 ◽  
Vol 112 (10) ◽  
pp. 934-939 ◽  
Author(s):  
Dipak Ranjan Nayak ◽  
R. Balakrishnan ◽  
K. Deepak Murthy
Keyword(s):  
Nasal Obstruction ◽  
Nasal Septum ◽  
Objective Assessment ◽  
Subjective Assessment ◽  
Endoscopic Approach ◽  
Lateral Nasal Wall ◽  
Combined Approach ◽  
Deviated Nasal Septum ◽  
Nasal Endoscope ◽  
Preliminary Study

AbstractThe authors have used the nasal endoscope for the precise identification of pathological abnormalities of the nasal septum in relation to the lateral nasal wall including the osteo-meatal complex and in its ultraconservative management. The aim of the study was to compare the efficacies of endoscope-aided septoplasty (EAS) over traditional septoplasty (TS) in treating the pathological septum and turbinates, performed in 30 cases each. The subjective assessment was carried out by visual analogue scores and objective assessment by nasal endoscopy. This study demonstrates the superiority and limitations of the endoscopic approach in managing a deviated nasal septum and the turbinates. The endoscope-aided technique was found to be more effective in relieving the contact areas and nasal obstruction (p = ≤0.05). The authors advocate a combined approach – an endoscopic approach for inaccessible posterior deviation and the conservative traditional technique for accessible anterior deviation of the nasal septum.

Video Objective Quality Evaluation System Based on the Visual Saliency Map

2013 ◽  
Vol 411-414 ◽  
pp. 1362-1367 ◽  
Author(s):  
Qing Lan Wei ◽  
Yuan Zhang
Keyword(s):  
Evaluation System ◽  
Quality Evaluation ◽  
Objective Assessment ◽  
Visual Saliency ◽  
Objective Evaluation ◽  
Subjective Assessment ◽  
Saliency Map ◽  
Assessment Scores ◽  
Objective Quality ◽  
Quality Evaluation System

This paper presents the thoughts about application of saliency map to the video objective quality evaluation system. It computes the SMSE and SPSNR values as the objective assessment scores according to the saliency map, and compares with conditional objective evaluation methods as PSNR and MSE. Experimental results demonstrate that this method can well fit the subjective assessment results.

scholarly journals Emotion induction in young and old persons on watching movie segments: Facial expressions reflect subjective ratings

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0253378
Author(s):  
Svenja Zempelin ◽  
Karolina Sejunaite ◽  
Claudia Lanza ◽  
Matthias W. Riepe
Keyword(s):  
Facial Expression ◽  
Facial Expressions ◽  
Mood Induction ◽  
Objective Assessment ◽  
Subjective Assessment ◽  
Mood States ◽  
Automated System ◽  
Personality Factors ◽  
Self Assessment ◽  
Mood Change

Film clips are established to induce or intensify mood states in young persons. Fewer studies address induction of mood states in old persons. Analysis of facial expression provides an opportunity to substantiate subjective mood states with a psychophysiological variable. We investigated healthy young (YA; n = 29; age 24.4 ± 2.3) and old (OA; n = 28; age 69.2 ± 7.4) participants. Subjects were exposed to film segments validated in young adults to induce four basic emotions (anger, disgust, happiness, sadness). We analyzed subjective mood states with a 7-step Likert scale and facial expressions with an automated system for analysis of facial expressions (FaceReader™ 7.0, Noldus Information Technology b.v.) for both the four target emotions as well as concomitant emotions. Mood expressivity was analysed with the Berkeley Expressivity Questionnaire (BEQ) and the Short Suggestibility Scale (SSS). Subjective mood intensified in all target emotions in the whole group and both YA and OA subgroups. Facial expressions of mood intensified in the whole group for all target emotions except sadness. Induction of happiness was associated with a decrease of sadness in both subjective and objective assessment. Induction of sadness was observed with subjective assessment and accompanied by a decrease of happiness in both subjective and objective assessment. Regression analysis demonstrated pre-exposure facial expressions and personality factors (BEQ, SSS) to be associated with the intensity of facial expression on mood induction. We conclude that mood induction is successful regardless of age. Analysis of facial expressions complement self-assessment of mood and may serve as a means of objectification of mood change. The concordance between self-assessment of mood change and facial expression is modulated by personality factors.

scholarly journals An analysis of the objective and subjective evaluation of the results of surgical treatment of morbid obesity

2015 ◽  
Vol 12 (3) ◽  
pp. 26-30
Author(s):  
Valeriy Nikolaevich Egiev ◽  
Yuliya Borisovna Mayorova ◽  
Evgeniy Aleksandrovich Zorin ◽  
Anastasiya Vladimirovna Мелеshko ◽  
Ekaterina Sergeevna Orlovskaya
Keyword(s):  
Bariatric Surgery ◽  
Morbid Obesity ◽  
Body Weight ◽  
Surgical Treatment ◽  
Treatment Effectiveness ◽  
Minimum Weight ◽  
Subjective Evaluation ◽  
Objective Assessment ◽  
Subjective Assessment ◽  
Excess Body Weight

The results of surgical treatment of morbid obesity usually considers a variety of factors and the main attention is paid to the dynamics of body weight after surgery. It is generally accepted that in the absence of reducing excess body weight or with minimum weight loss (a few kilograms), the result is considered unsatisfactory. The aim of the work was to compare an objective assessment of gastric bypass (GBS) and gastric banding (GB) and the subjective evaluation of treatment effectiveness by patients themselves. The study included 457 (69.7%) patients that underwent GB and 198 (30.3%) patients after GBS. At the late postoperative period 243 patients (53.2%) were available after the GB and 112 (56.6%) patients after GBS. The frequency of matches between objective and subjective assessment of outcomes of surgery usually did not exceed 50%. Given this, there is a need for a comprehensive analysis of the results of bariatric surgery. Developed multicomponent scale allows to evaluate the effectiveness of any bariatric surgery.

scholarly journals Scientific and methodological foundations of hygienic assessment and examination of digital educational content

2021 ◽  
Vol 100 (10) ◽  
pp. 1035-1042
Author(s):  
Vladislav R. Kuchma ◽  
Olga I. Yanushanets ◽  
Natalya A. Petrova
Keyword(s):  
Educational Material ◽  
Expert Assessment ◽  
Visual Analyzer ◽  
Visual Fatigue ◽  
Educational Materials ◽  
Educational Content ◽  
Modern School ◽  
Teaching Aids ◽  
Electronic Teaching ◽  
Designed Materials

Introduction. In a modern school, digital educational materials are widely used, implemented through electronic teaching aids. However, teachers in the learning process are not guided by the appropriate recommendations of hygienists. The purpose of the study is to substantiate hygienically significant parameters of digital educational content presented on devices equipped with a screen. Materials and methods. Hygienic observational, expert-analytical and physiological-hygienic studies were carried out to assess 460 electronic educational materials. Results. A number of indicators have been established that characterize the readability of educational materials of a digital school, four of which are regulated by the current sanitary legislation, and the rest are of a recommendatory nature. The assessment of the textual material made it possible to establish that the educational materials did not comply with the regulated and recommended hygienic requirements in all respects. The expert assessment showed that the hygienically not rationally designed educational material presented on the screens causes discomfort of the visual analyzer after working with it. Working with such material contributes to visual fatigue, at the same time, the use of hygienically rationally designed materials is characterized by positive trends in the state of the visual analyzer. Conclusion. A hygienically not rationally designed educational material presented on screens causes discomfort in the visual analyzer and promotes visual fatigue. Hygienic assessment and examination of used and developed digital educational content should be carried out in terms of text, color, illustrative design and design of electronic educational material.

scholarly journals Effect of Digital Noise Reduction of Hearing Aids on Music and Speech Perception

2020 ◽  
Vol 24 (4) ◽  
pp. 180-190
Author(s):  
Hyo Jeong Kim ◽  
Jae Hee Lee ◽  
Hyun Joon Shim
Keyword(s):  
Speech Perception ◽  
Noise Reduction ◽  
Hearing Aids ◽  
Music Perception ◽  
Objective Assessment ◽  
Subjective Assessment ◽  
Pitch Discrimination ◽  
Korean Music ◽  
Sentence Recognition ◽  
Assessment Tests

Background and Objectives: Although many studies have evaluated the effect of the digital noise reduction (DNR) algorithm of hearing aids (HAs) on speech recognition, there are few studies on the effect of DNR on music perception. Therefore, we aimed to evaluate the effect of DNR on music, in addition to speech perception, using objective and subjective measurements. Subjects and Methods: Sixteen HA users participated in this study (58.00±10.44 years; 3 males and 13 females). The objective assessment of speech and music perception was based on the Korean version of the Clinical Assessment of Music Perception test and word and sentence recognition scores. Meanwhile, for the subjective assessment, the quality rating of speech and music as well as self-reported HA benefits were evaluated. Results: There was no improvement conferred with DNR of HAs on the objective assessment tests of speech and music perception. The pitch discrimination at 262 Hz in the DNR-off condition was better than that in the unaided condition (<i>p</i>=0.024); however, the unaided condition and the DNR-on conditions did not differ. In the Korean music background questionnaire, responses regarding ease of communication were better in the DNR-on condition than in the DNR-off condition (<i>p</i>=0.029). Conclusions: Speech and music perception or sound quality did not improve with the activation of DNR. However, DNR positively influenced the listener’s subjective listening comfort. The DNR-off condition in HAs may be beneficial for pitch discrimination at some frequencies.

Current innovations in otolaryngology medical education in the UK: a systematic literature review

2020 ◽  
Vol 134 (4) ◽  
pp. 284-292
Author(s):  
H M Yip ◽  
T C F Soh ◽  
Z Z Lim
Keyword(s):  
Medical Education ◽  
Objective Assessment ◽  
Final Analysis ◽  
Subjective Assessment ◽  
Junior Doctors ◽  
Synthesis Methods ◽  
Qualitative Synthesis ◽  
Educational Innovations ◽  
The Uk ◽  
The Impact

AbstractObjectiveRecent studies have indicated a lack of ENT training at the undergraduate and post-graduate levels. This study aimed to review the impact of recent educational innovations in improving ENT training for medical students and junior doctors in the UK.MethodsThree independent investigators conducted a literature search of published articles on ENT education. Included studies were analysed using qualitative synthesis methods.ResultsAn initial search yielded 2008 articles; 44 underwent full-text evaluation and 5 were included for final analysis. Most included studies demonstrated benefits for students when compared to existing teaching standards in terms of objective assessment (knowledge and skills gained) or subjective assessment (confidence and preference) following implemented educational innovations.ConclusionThis study identified educational innovations developed in the past 15 years to enhance the teaching of core ENT competencies. More research is needed to establish their impact on the state of ENT medical education in the UK.

Poverty in the Dolnośląskie Voivodship

2016 ◽  
Vol 61 (6) ◽  
pp. 70-85
Author(s):  
Agata Girul
Keyword(s):  
Comparative Analysis ◽  
Cross Section ◽  
Objective Assessment ◽  
Subjective Assessment ◽  
Poverty Level ◽  
The Cross

The article presents selected aspects of economic poverty in the Dolnośląskie Voivodship on the background of the country and other voivodships, as well as in the cross-section of the Dolnośląskie powiats in 2013, as compared to 2010. The comparative analysis of poverty level by powiats was presented by means of taxonomic synthetic measure based on a set of three selected diagnostic indicators. A complement to the objective assessment of poverty in the Dolnośląskie Voivodship was a presentation of results of subjective assessment of material situation of households in the voivodships’ cross-section.

Dextromethorphan and Codeine: Objective Assessment of Antitussive Activity in Patients with Chronic Cough

1983 ◽  
Vol 11 (2) ◽  
pp. 92-100 ◽  
Author(s):  
Heinrich Matthys ◽  
Bärbel Bleicher ◽  
Ulrich Bleicher
Keyword(s):  
Side Effects ◽  
Chronic Cough ◽  
Crossover Trial ◽  
Objective Assessment ◽  
Subjective Assessment ◽  
Double Blind ◽  
Cough Frequency ◽  
Increasing Trend ◽  
Antitussive Activity ◽  
Cough Suppressant

Dextromethorphan, the most widely used cough suppressant in the U.S.A., was compared with codeine, the traditional European antitussive, in a double-blind, crossover trial using both an objective and subjective assessment of efficacy in sixteen patients with chronic, stable cough. Both preparations, at a dose of 20 mg, were similarly effective in reducing cough frequency. Dextromethorphan lowered cough intensity to a greater degree than codeine (p < 0·0008) and was considered the better antitussive by the majority of patients (p < 0·001). In view of its lack of side-effects, its safety even in overdose and its non-narcotic status, the increasing trend in Europe to use dextromethorphan as a substitute for codeine in the treatment of cough is to be welcomed.

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