Experiments and Evaluation of Body Pressure Distribution on Wheelchair Cushion

2014 ◽  
Vol 529 ◽  
pp. 317-320 ◽  
Author(s):  
Ying Liu ◽  
Xiu Feng Zhang ◽  
Yan Ma
Keyword(s):  
Contact Area ◽  
Subjective Evaluation ◽  
Objective Assessment ◽  
Subjective Assessment ◽  
Experimental Results ◽  
Pressure Distributions ◽  
Seat Cushion ◽  
Seating Comfort ◽  
Body Pressure Distribution ◽  
The Relationship

To study the relationship between wheelchair cushion shape and seat cushion comfort. By measuring sitting pressure distributions on wheelchair cushions with different shape, indices of sitting pressure such as the contact area, maximum sitting pressure were discussed along with method for subjective evaluation and objective test combination to analyze the relationship between seat cushion shape and seat cushion comfort. The experimental results from subjective assessment on three kinds of seat cushion indicate that the cushion shape is an important factor affecting seating comfort .The experimental results from objective assessment indicate that the contact area and maximum sitting pressure can preferably reflect the comfort of seat cushion and be used to evaluate the comfort of seat cushion.

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 Building a Framework of Evaluating Human–Environment Relationships: Considering the Differences between Subjective Evaluations and Objective Assessments

2019 ◽  
Vol 12 (1) ◽  
pp. 167
Author(s):  
Ying Liu ◽  
Wei Deng ◽  
Li Peng
Keyword(s):  
Subjective Evaluation ◽  
Objective Assessment ◽  
Human Environment ◽  
Subjective Evaluations ◽  
The Matrix ◽  
The Difference ◽  
Objective Basis ◽  
And Behavior ◽  
Attitudes And Behavior ◽  
The Relationship

The human–environment relationship is bidirectional, meaning that human attitudes and behavior to nature are at the root of environmental change, while changes in the environment affect human attitudes and behavior. It is necessary to analyze the human–environment relationship from two aspects: (a) Whether there is a good objective basis for maintaining an environment, and (b) whether people report that they are satisfied with that environment. This study attempted to construct a framework to evaluate the human–environment relationship considering these two aspects. The framework consists of three parts: Traditional evaluation, indicator construction, and evaluation considering the relationship between subjective and objective assessment. Traditional evaluations consist of subjective evaluations and objective assessments. Indicator construction focuses on putting forward indicators that quantitively evaluate the human–environment relationship, considering the results of objective assessments and subjective evaluations. The indicators introduced in this study include MD (match degree) and OSC (objective assessment and subjective evaluation comparison) to explain the difference and the relationship between objective assessments and subjective evaluations of the environment. Then, based on the indicator value, a matrix containing four situations (Match-H, Match-L, H-L, and L-H) was constructed to explore why a human–environment relationship may not be harmonious. Since the upper Minjiang River basin is a typical area, because of its intensive human activity, as well as its fragile ecological environment, this study chose it as a case study and used it to verify the framework. Through the framework construction and application, this study found that: (1) The framework of this study provided a more comprehensive method to evaluate the human–environment relationship; (2) as the subjective evaluation was based on individual comprehensive tradeoffs, the evaluation combining the subjective and objective assessment was more accurate; (3) environmental conditions were the basis, and human activities were the key factors, for the coordination of human–environment relationships; so the matrix put forward in this study was necessary for finding the cause of human–environment incongruity.

The relationship between the experience of negative feelings and quality of life and the socio-demographical factors of patients treated for spinal discopathy of the lumbar spine

2021 ◽  
Vol 19 (1) ◽  
pp. 93-104
Author(s):  
Joanna Girzelska ◽  
Leszek Chomicki
Keyword(s):  
Quality Of Life ◽  
Lumbar Spine ◽  
Marital Status ◽  
Subjective Evaluation ◽  
Subjective Assessment ◽  
Survey Method ◽  
Significant Deterioration ◽  
Negative Feelings ◽  
The Relationship

Most of the pathological changes in the spine begin with the physiological loss of intervertebral disc function. Discopathy of the lumbar spine leads to a significant deterioration in the quality of life, which is why the therapeutic team strives is to improve patients quality of life through actions aimed at reducing spinal dysfunction to an extent that allows for human functioning. The research aim was to determine the quality of life of patients who had been treated as a result of discopathy of the lumbar spine and to establish the relationship between the experience of negative feelings and a subjective assessment of the quality of life with factors resulting frompatient socio-demographics. The study included 110 patients treated for lumbar discopathy. A diagnostic survey method was employed as a research technique, with the use of a proprietary survey questionnaire. Statistic analysis of the results was performedusing the statistical package PQStat v1.6.6. Subjective evaluation of patients quality of life in 66 persons (60%) was at an average level, only 6 (5.45%) respondents rated the quality of their lives as being higher. Those living in towns of up to 50,000 residents rated their quality of life higher (6.21), with the lowest level being reported by those living in the countryside (4.95). Age did not influence significantly the quality of life, but older people most often experienced pain (p=0.4). Analysis of variance did not show statistically significant differences between marital status and respondent quality of life (p = 0.53) but did show significant differences between education levels and the incidence of negative feelings such as fear, anxiety or depression. Socio-demographic variables: such as gender, age and marital status do not significantly differentiate the quality of life of the respondents. There is a relationship between experiencing negative feelings and educational levels. The lower the education level obtained, the more often negative feelings are experienced. The experiencing of negative feelings and disease duration are variables that reduce the quality of life of respondents.

Objective Metrics for the Evaluation of Simple Surgical Skills in Real and Virtual Domains

2003 ◽  
Vol 12 (2) ◽  
pp. 207-221 ◽  
Author(s):  
Louise Moody ◽  
Chris Baber ◽  
Theodoros N. Arvanitis ◽  
Martin Elliott
Keyword(s):  
Surgical Technique ◽  
Subjective Evaluation ◽  
Objective Assessment ◽  
Evaluation Criteria ◽  
Subjective Assessment ◽  
Surgical Skills ◽  
Computer Based Training ◽  
Haptic Displays ◽  
Objective Metrics ◽  
Time Required

Surgical skills are traditionally assessed through subjective evaluation with experienced surgeons observing and rating trainee activity. However, this process can be expensive, particularly in terms of the time required of expert surgeons. Subjective assessment may also suffer from problems of intersubject variation in the application of evaluation criteria. Computer-based training, in particular systems combining virtual reality interfaces with haptic displays, offers a means of providing both automated and objective assessment of performance. In this paper we propose that, prior to the development of such systems, there is a need to determine measures that can adequately differentiate levels of performance. The paper therefore discusses the evaluation of surgical technique using objective metrics. Two main questions are addressed. How can surgical technique be assessed? What metrics prove useful in defining and modifying surgical skills and techniques?

The subjective assessment of normal sleep patterns

1962 ◽  
Vol 108 (456) ◽  
pp. 642-654 ◽  
Author(s):  
Andrew McGhie ◽  
S. M. Russell
Keyword(s):  
Objective Assessment ◽  
Subjective Assessment ◽  
Neurophysiological Mechanisms ◽  
Normal Sleep ◽  
Reference Measurements ◽  
Relationship Of ◽  
The Relationship ◽  
Standard Frame ◽  
Made In

“When we consider the immense human significance of sleep, the absolute necessity for us to spend a considerable part of our lives in abject mental annihilation, it is remarkable how little we know about it. …” In these words, Sir John Eccles introduced the recently published Ciba Foundation Symposium on “The Nature of Sleep” (3), in which are described many of the advances which have been made in recent years in our attempts to understand the phenomena which are involved in the state of sleep. In one of the papers included in this Symposium, Bremer (2) reviews the work which has been reported since 1954 on the neurophysiological mechanisms involved in sleep. The relationship of dreaming to the depth of sleep has been investigated by such workers as Kleitman (5), Dement (4) and Wolpert (11). These studies have been made possible by the application of modern techniques of measuring mental activity. The use of electroencephalographic methods has allowed an approximate classification of the different levels of sleep which enables different workers to adopt a standard frame of reference. Measurements of rapid eye movements and of changes in muscle potential during sleep have provided more objective methods of assessing dream activity. Other recent studies have attempted to make an objective assessment of the physical and mental effects of sleep deprivation (Morris et al., 7, Bliss et al., 1, Murray et al., 8, Wilkinson, 9, Williams et al., 10).

scholarly journals Pattern of Pressure Distribution on the Car Seat Under Static Condition and Its Relationship with Driving Posture

2019 ◽  
Vol 8 (12) ◽  
pp. 4189-4194
Keyword(s):  
Pressure Distribution ◽  
Rating Scale ◽  
Subjective Evaluation ◽  
Objective Assessment ◽  
Static Condition ◽  
Body Part ◽  
Subjective Assessment ◽  
Road Accident ◽  
Car Seat ◽  
Driving Posture

Assessment of sitting condition on the car seat is important as the driver requires to remain seated while maneuvering the car. The seating situation with relatively restricted position and posture can lead to discomfort and fatigue among drivers. When the driver is getting fatigue, it may reduce the performance, and hence increase the risk of road accident. Up to this date, numerous study were conducted to solve this issue. However, majority of these studies performed the study in the laboratory. Furthermore, majority of the experiment were not used the actual car and provide clear interaction between driving posture and pressure distribution pattern. Hence, this study aims to determine the onset level of driver’s condition in term of discomfort rating scale and pressure distribution on the car seat under static condition by using actual car. Forty-four participants involved in this study by integrating discomfort rating assessment for the subjective evaluation and Pressure Sensor for the objective assessment. There were two main sections for subjective assessment that required the participant to provide the feedback on general discomfort level and body part discomfort while seating. Meanwhile, objective assessment used pressure map by Tactilus with 32 x 32 sensor matrix. All participants were required to sit on the car seat for five minutes. Findings showed that the driver’s discomfort and pressure pattern increased with time. In addition, the peak pressure distribution was found at the right buttock of the participant. Driving posture also influence the pattern of pressure distribution. This study provides a guideline for the automotive manufacturer to provide the optimal design of the car seat by maximizing the seat materials in term of quantity and quality with the highest pressure distribution levels. This adjustment can help to minimize the load concentration by providing a good pressure distribution

scholarly journals Video bit-rate requirements for 8K 120-Hz HEVC/H.265 temporal scalable coding: experimental study based on 8K subjective evaluations

2020 ◽  
Vol 9 ◽  
Author(s):  
Yasuko Sugito ◽  
Shinya Iwasaki ◽  
Kazuhiro Chida ◽  
Kazuhisa Iguchi ◽  
Kikufumi Kanda ◽  
...  
Keyword(s):  
Experimental Study ◽  
High Efficiency ◽  
Subjective Evaluation ◽  
Subjective Assessment ◽  
Experimental Results ◽  
Scalable Coding ◽  
Bit Rate ◽  
High Efficiency Video Coding ◽  
Subjective Evaluations ◽  
Screen Height

Abstract 8K video parameters were designed to provide an immersive experience; meanwhile, special considerations are necessary to assess the entire screen subjectively. This paper studies the video bit-rate required for 8K 119.88-Hz (120-Hz) and 59.94-Hz (60-Hz) the high efficiency video coding (HEVC)/H.265 temporal scalable coding based on subjective evaluation experiments. To investigate the appropriate bit-rate for both 8K 120- and 60-Hz videos for broadcasting purposes, we compress 8K 120-Hz test sequences using software that emulates our real-time HEVC encoder and conduct two types of experiments. The experimental results demonstrate that the required video bit-rate for 8K 120-Hz temporal scalable coding is estimated to be 85–110 Mbps, which is equivalent to the practical bit-rate for 8K 60-Hz videos, and the appropriate bit-rate for 8K 60-Hz video in 8K 120-Hz video at 85 Mbps is assumed to be ~80 Mbps. From the analyses of the encoded videos, it is confirmed that the experimental results are primarily influenced by the image quality on the slice boundary positioned at the middle of the screen height. When conducting the experiments, we determined settings referring to an initial 8K subjective assessment; we further mention requirements for future 8K subjective evaluations from the experimental results.

Threat of premature birth: psycho-social aspects

2016 ◽  
pp. 86-89
Author(s):  
S. Zhuk ◽  
◽  
O. Schurevska ◽  
Keyword(s):  
Pregnant Women ◽  
Physical Functioning ◽  
Premature Birth ◽  
Defense Mechanisms ◽  
Subjective Evaluation ◽  
Clinical Signs ◽  
Subjective Assessment ◽  
Psychological Status ◽  
Stress Load ◽  
Mandatory Participation

The objective: to study the psychological characteristics of women’s status in one of the most common complications of pregnancy - the threat of termination of pregnancy, depending on the level of stress load. Patients and methods. We have studied the psychological status (the Holmes-Rahe level of psychosocial stress, the Spielberg-Hanin level of anxiety, V.I.Dobryakov’s related to a pregnancy test, diagnosis of psychological defense mechanisms, assessment of quality of life) 60 pregnant women with threat of premature birth in the third trimester of pregnancy. Surveyed women were divided into 2 groups: group 1 included 30 pregnant women – forced migrant of Donetsk and Lugansk area and 2 group – 30 pregnant women who resided in Kiev. Results. At the same clinical picture of the threat of premature birth we detected discrepancy between the subjective assessment of their condition in women – forced migrants: a high level of situational and personal anxiety, decrease in physical (physical functioning, role-physical functioning) and psychological (social functioning, role emotional functioning) health, doubtful and pathological subtypes of gestational dominant. This creates prerequisites for complications of pregnancy, childbirth and postpartum future period and requires the participation of psychologists in the work with this category of patients. Conclusion. So, revealed a discrepancy between the objective clinical signs similar obstetric pathology (on the example of threatened abortion) in pregnant women with different levels of stress load and their subjective evaluation of their condition that affects their psychological status. This should be reflected in individually tailored therapy and be mainstreamed into the work of obstetricians and gynecologists with these patients, and requires mandatory participation of psychologists in the work with this category of patients. Key words: pregnancy, the threat of premature birth, stress, psychological status.

Study of the infl uence of information and communication tools on the psychophysiological state of schoolchildren on the basis of subjective evaluation

2020 ◽  
pp. 47-55
Author(s):  
Aleksandra Rakhmanova ◽  
Georgiy Loginov ◽  
Vladimir Dolich ◽  
Nataliya Komleva ◽  
Galina Rakhmanova
Keyword(s):  
High School ◽  
Emotional State ◽  
Statistical Significance ◽  
Subjective Evaluation ◽  
Educational Process ◽  
The Body ◽  
Leningrad Region ◽  
Communication Tools ◽  
Information And Communication ◽  
The Relationship

The relevance of the article is determined by the existence of contradictions between the need to introduce innovative technologies into the educational process at school, as an integral attribute of modern education, and the negative influence of factors on the physical and psycho-emotional state of health of students related to the use of information and communication tools (computers, phones, headphones). The goal of the study was to assess the relationship between the timing of the use of information and communication tools and the frequency of functional and psycho-emotional complaints in groups of middle and high school schoolchildren. 400 schoolchildren of the Saratov Region, the Moscow Region, Leningrad Region and the Republic of Dagestan were surveyed, who made up two groups of research: middle-school schoolchildren (grades 5–6) and high-school schoolchildren (grades 10–11 The survey was carried out by means of the standardized formalized cards which included the questions considering usage time of computers and mobile phones, complaints to a headache, hands pain, other pain and/or feeling of discomfort from visual organ and the organs of hearing, as well as a psycho-emotional state. Statistical analysis of the data was performed using the STATISTICA application software program by StatSoft Inc (USA). To compare the frequencies of a binary feature, a fourfold table of absolute frequencies was constructed and the level of statistical significance for the exact Fisher’s two-tailed test criterion was determined. The study was conducted according to the requirements of bioethics, after signing informed consent statement by teenagers and their parents. The study examined the relationship between the timing of the use of information and communication tools and the frequency of complaints in groups of schoolchildren. The results of the study should be taken into account when developing and implementing preventive measures to prevent negative effects of computers and mobile devices on the body of students.

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