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Wyświetlanie 1-9 z 9
Tytuł:
Office Ergonomics: Deficiencies in Computer Workstation Design
Autorzy:
Shikdar, A. A.
Al-Kindi, M. A.
Powiązania:
https://bibliotekanauki.pl/articles/90064.pdf
Data publikacji:
2007
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
computer workstation
ergonomic deficiencies
work posture
work practices
health
problems
employee satisfaction
Opis:
The objective of this research was to study and identify ergonomic deficiencies in computer workstation design in typical offices. Physical measurements and a questionnaire were used to study 40 workstations. Major ergonomic deficiencies were found in physical design and layout of the workstations, employee postures, work practices, and training. The consequences in terms of user health and other problems were significant. Forty-five percent of the employees used nonadjustable chairs, 48% of computers faced windows, 90% of the employees used computers more than 4 hrs/day, 45% of the employees adopted bent and unsupported back postures, and 20% used office tables for computers. Major problems reported were eyestrain (58%), shoulder pain (45%), back pain (43%), arm pain (35%), wrist pain (30%), and neck pain (30%). These results indicated serious ergonomic deficiencies in office computer workstation design, layout, and usage. Strategies to reduce or eliminate ergonomic deficiencies in computer workstation design were suggested.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2007, 13, 2; 215-223
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Workstation Design in Carpet Hand-Weaving Operation : Guidelines for Prevention of Musculoskeletal Disorders
Autorzy:
Choobineh, A.
Lahmi, M.
Hosseini, M.
Shahnavaz, H.
Jazani, R. K.
Powiązania:
https://bibliotekanauki.pl/articles/89889.pdf
Data publikacji:
2004
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
weaving workstation design
carpet hand-weaving operation
musculoskeletal problems
working posture
projektowanie miejsc pracy
pozycja przy pracy
ergonomia
choroby narządów ruchu
wytwarzanie wyrobów włókienniczych
zagrożenia zdrowia
czynniki ryzyka
fizjologia narządów ruchu
Opis:
Carpet weavers suffer from musculoskeletal problems mainly attributed to poor working postures. Their posture is mostly constrained by the design of workstations. This study was conducted to investigate the effects of 2 design parameters (weaving height and seat type) on postural variables and subjective experience, and to develop guidelines for workstation adjustments. At an experimental workstation, 30 professional weavers worked in 9 different conditions. Working posture and weavers’ perceptions were measured. It was shown that head, neck and shoulder postures were influenced by weaving height. Both design parameters influenced trunk and elbows postures. The determinant factor for weavers’ perception on the neck, shoulders and elbows was found to be weaving height, and on the back and knees it was seat type. Based on the results, the following guidelines were developed: (a) weaving height should be adjusted to 20 cm above elbow height; (b) a 10º forward-sloping high seat is to be used at weaving workstations.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2004, 10, 4; 411-424
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Musculoskeletal Symptoms as Related to Ergonomic Factors in Iranian Hand-Woven Carpet Industry and General Guidelines for Workstation Design
Autorzy:
Choobineh, A.
Lahmi, M.
Shahnavaz, H.
Jazani, R. K.
Hosseini, M.
Powiązania:
https://bibliotekanauki.pl/articles/90070.pdf
Data publikacji:
2004
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
MSDs in small-scale industries
posture assessment in carpet hand weaving operation
MSDs in industrially developing countries (IDCs)
weaving workstation design
zagrożenia zdrowia
wytwarzanie wyrobów włókienniczych
małe przedsiębiorstwo
kraje rozwijające się
projektowanie miejsc pracy
pozycja przy pracy
choroby narządów ruchu
fizjologia narządów ruchu
choroby mięśni
Opis:
Carpet weaving is a high risk occupation for developing musculoskeletal disorders (MSDs). The objectives of the present study, which was carried out in the Iranian hand-woven carpet industry, were determination of the prevalence of MSD symptoms, identification of major factors associated with MSD symptoms and development of guidelines for workstation design. 1,439 randomly selected weavers participated in this study. A questionnaire was used to collect data on MSD symptoms. The results revealed that the prevalence rates for symptoms in different body regions were high as compared to the general Iranian population (for neck, back and large joints, p < .0001). The results of multivariate analyses showed that major ergonomic factors associated with musculoskeletal symptoms were loom type, working posture, daily working time and seat type. Based on the results, some general guidelines for designing weaving workstations were developed. A prototype test showed that the new workstation was acceptable for subject tests and that it improved working posture.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2004, 10, 2; 157-168
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Isometric Pull-Push Strengths in Workspace. 1, Strength Profiles
Autorzy:
Das, B.
Wang, Y.
Powiązania:
https://bibliotekanauki.pl/articles/90551.pdf
Data publikacji:
2004
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
isometric strength
push and pull strengths
workspace reach levels
vertical and horizontal angles
workstation design
pchanie
siła mięśni
praca mięśni
pozycja przy pracy
pozycja siedząca
pozycja stojąca
Opis:
The isometric pull and push strength profiles of males and females were determined in seated and standing positions in the workspace. The strongest pull strength location was at extreme reach vertically above the shoulder for both males and females. The greatest pull strength of 400 Newtons (N) for males was recorded in the seated and standing positions. Females. pull strengths in the seated and standing positions were 222 and 244 N, respectively. The strongest push strength was always at the maximum reach at the overhead location. Males. maximum push strength was 227 N in the seated position and 251 N in the standing position. Females’ maximum push strength was 96 N in the seated position and 140 N in the standing position. On the average the strength in the standing position was 79% of the seated position. The push strength was 71% of the pull strength and females were 56% as strong as males.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2004, 10, 1; 43-58
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Isometric Pull-Push Strengths in Workspace. 2, Analysis of Spatial Factors
Autorzy:
Das, B.
Wang, Y.
Powiązania:
https://bibliotekanauki.pl/articles/90758.pdf
Data publikacji:
2004
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
isometric strength
push and pull strengths
workspace reach levels
vertical and horizontal angles
workstation design
pchanie
siła mięśni
praca mięśni
pozycja przy pracy
pozycja siedząca
pozycja stojąca
projektowanie miejsc pracy
Opis:
The effect of reach levels, horizontal angles and vertical angles on isometric pull and push strengths of males and females in standing and seated positions was determined. The effect of reach levels on strength varied as a consequence of force direction, working position and gender. Reach level has a significant effect on women's pull strength in the seated position and on push strength in the standing position. The strength value was significantly greater in the extreme reach than in maximum or normal reach. Vertical angle ö had a significant effect on strength consistently in all cases. Strength values increased significantly with the increase of ö angles from 0º to 45º to 90º. The horizontal angle è had a significant influence only on the pull strength of standing and seated men and standing women (not seated woman). The maximum strength was significantly greater at è = 90º.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2004, 10, 1; 59-64
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Secured Workstation to Process the Data of Different Classification Levels
Autorzy:
Zieliński, Z.
Furtak, J.
Chudzikiewicz, J.
Stasiak, A.
Brudka, M.
Powiązania:
https://bibliotekanauki.pl/articles/309351.pdf
Data publikacji:
2012
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
cryptographic protection
multilevel security
software design
UML
virtualization
Opis:
The paper presents some of the results obtained within the ongoing project related with functional requirements and design models of secure workstation for special applications (SWSA). SWSA project is directed toward the combination of the existing hardware and software virtualization with cryptography and identification technologies to ensure the security of multilevel classified data by means of some formal methods. In the paper the requirements for SWSA, its hardware and software architecture, selected security solution for data processing and utilized approach to designing secure software are presented. The novel method for secure software design employs dedicated tools to verify the confidentiality and the integrity of data using Unified Modeling Language (UML) models. In general, the UML security models are embedded in and simulated with the system architecture models, thus the security problems in SWSA can be detected early during the software design. The application of UML topology models enables also to verify the fundamental requirement for MLS systems, namely the hardware isolation of subjects from different security domains.
Źródło:
Journal of Telecommunications and Information Technology; 2012, 3; 5-12
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
System oświetlenia stanowisk pracy z komputerem dla osób niedowidzących
Lighting system design for a computer workstation for eyesight impaired people
Autorzy:
Pawlak, A.
Powiązania:
https://bibliotekanauki.pl/articles/181423.pdf
Data publikacji:
2011
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
oprawy oświetleniowe
oświetlenie
stanowisko pracy
osoba słabowidząca
lighting fittings
lighting
workstand
Opis:
W artykule przedstawiono przykładowe oprawy oświetlenia miejscowego przeznaczone do oświetlania stanowisk pracy osób o umiarkowanym stopniu upośledzeniu widzenia. Na podstawie analizy cech użytkowych tych opraw zaproponowano system oświetlenia składający się z opraw oświetlenia ogólnego i oprawy oświetlenia miejscowego. W obu tych oprawach jest możliwa regulacja poziomu natężenia oświetlenia oraz temperatury barwowej.
This paper presents examples of local luminaires designed for lighting workplaces for people with moderately impaired eyesight. An analysis of the functional properties of luminaires results in a proposal for a lighting system. It consists of a general luminaire as well as a local luminaire. Both luminaires are equipped with a device for adjusting illuminance and colour temperature.
Źródło:
Bezpieczeństwo Pracy : nauka i praktyka; 2011, 6; 11-14
0137-7043
Pojawia się w:
Bezpieczeństwo Pracy : nauka i praktyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ergonomiczne podstawy projektowania technologicznego zakładów spożywczych
Ergonomic bases of technological designing food plants
Autorzy:
Grzesińska, W.
Tomaszewska, M.
Powiązania:
https://bibliotekanauki.pl/articles/229016.pdf
Data publikacji:
2014
Wydawca:
Wyższa Szkoła Menedżerska w Warszawie
Tematy:
projektowanie technologiczne
ergonomia
zakłady spożywcze
organizacja stanowiska pracy
technological design
ergonomics
food plants
organization of workstation
Opis:
Projektowanie technologiczne zakładów spożywczych musi uwzględniać aspekty związane z ergonomią, do których należą: charakterystyki wymiarowe stanowiska pracy, rozumiane jako jego długość, głębokość oraz szerokość, charakterystyki wymiarowe ciągów komunikacyjnych i przejść, przy zachowaniu prawidłowej przestrzeni stanowiska pracy, określanej jako odległość między stanowiskiem pracy a szlakiem komunikacyjnym oraz prawidłowe parametry materialne warunków pracy, jakimi są przede wszystkim mikroklimat, oświetlenie i hałas. Stanowisko pracy wraz z jego oprzyrzą- dowaniem i wyposażeniem powinno zapewnić pracownikom bezpieczeństwo, nie zagrażać ich zdrowiu ani życiu oraz nie wpływać na utratę zdolności do pracy. Zapewnia to maksymalizację wydajności pracy oraz podniesienie jej efektywno- ści przy minimalizacji wysiłku i zapewnieniu bezpieczeństwa i higieny pracy.
Technological design food facilities must take into account aspects related to ergonomics, which include: dimensional characteristics of work place defined as the length, depth and width, dimensional characteristics communication routes and passages, while maintaining the correct work space jobs defined as the distance between the workplace and communication route and the proper parameters of the material conditions of work which are primarily climate, lighting and noise. Workplace along with its instrumentation and equipment should provide employees with safety, do not endanger their health or life, and do not affect the loss of ability to work. It maximizes work efficiency while minimizing effort and ensuring the safety and health at work.
Źródło:
Postępy Techniki Przetwórstwa Spożywczego; 2014, 2; 68-75
0867-793X
2719-3691
Pojawia się w:
Postępy Techniki Przetwórstwa Spożywczego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Shoulder girdle muscle activity and fatigue in traditional and improved design carpet weaving workstations
Autorzy:
Allahyari, Teimour
Mortazavi, Narges
Khalkhali, Hamid Reza
Sanjari, Mohammad Ali
Powiązania:
https://bibliotekanauki.pl/articles/2177075.pdf
Data publikacji:
2015-10-21
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
muscle activity
surface electromyography
muscle fatigue
carpet weaving
workstation
perceived fatigue
Opis:
Objectives Work-related musculoskeletal disorders in the neck and shoulder regions are common among carpet weavers. Working for prolonged hours in a static and awkward posture could result in an increased muscle activity and may lead to musculoskeletal disorders. Ergonomic workstation improvements can reduce muscle fatigue and the risk of musculoskeletal disorders. Material and Methods The aim of this study is to assess and to compare upper trapezius and middle deltoid muscle activity in 2 traditional and improved design carpet weaving workstations. These 2 workstations were simulated in a laboratory and 12 women carpet weavers worked for 3 h. Electromyography (EMG) signals were recorded during work in bilateral upper trapezius and bilateral middle deltoid. The root mean square (RMS) and median frequency (MF) values were calculated and used to assess muscle load and fatigue. Repeated measure ANOVA was performed to assess the effect of independent variables on muscular activity and fatigue. The participants were asked to report shoulder region fatigue on the Borg’s Category-Ratio scale (Borg CR-10). Results Root mean square values in workstation A are significantly higher than in workstation B. Furthermore, EMG amplitude was higher in bilateral trapezius than in bilateral deltoid. However, muscle fatigue was not observed in any of the workstations. Conclusions The results of the study revealed that muscle load in a traditional workstation was high, but fatigue was not observed. Further studies investigating other muscles involved in carpet weaving tasks are recommended.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2016, 29, 2; 345-354
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-9 z 9

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