ergonomics

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prezentatsiya powerpoint 1 tashkent university of information technologies named after muhammad al-khwarizmi english frl1114 workstation health and safety lesson 29 foreign languages department english 1 2 computer health problems english ergonomics 3 ergonomics is the science that studies how people interact with machines and the environment (furniture, lighting, etc.). the objective is to find ways to maximize safety, comfort, job performance, and accuracy and to deal with the different computer health problems. english 4 computer health problems can be an umbrella term for the various problems a computer user can develop from extended and incorrect computer use. a computer user may experience many physical health problems from using computers extensively over a prolonged period of time in an inefficient manner. excessive use of electronic screen media can have ill effects on mental health related to mood, cognition, and behavior, even to the point of hallucination. english 5 computer related health …

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reen that is 2-3″ below the top. adjust the tilt and height of your screen or your chair if you need to and, if you have a laptop, consider using a stand to raise it up. if you ever have to angle your head upwards or downwards to see the screen, then tension can build up in your neck and cause headaches and fatigue. english 9 reduce tension by regularly moving your neck and shoulders: -sit up straight and slowly tilt your head down to one shoulder and then to the other to stretch your neck. -move your shoulders around in small circles, first in one direction and then the other. -slowly bring your chin down to your chest, hold for 3 seconds, and then release. english 10 to keep your arms and wrists ache-free: -reach your arms out in front of you and draw big circles with your wrists, …

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to make it easier to see. -ensure the screen colours are easy to look at, and that the characters are sharp and legible. -look away from the screen into the distance for a few moments to relax your eyes; focus on something 30 meters away for 30 seconds every 30 minutes. english 14 english 15 take a break! all ergonomists agree that it's a good idea to take frequent, brief rest breaks: eye breaks: every 15 minutes you should briefly look away from the screen for a minute or two to a more distant scene, preferably something more that 20 feet away. this lets the muscles inside the eye relax. also, blink your eyes rapidly for a few seconds. this refreshes the tear film and clears dust from the eye surface. micro-breaks: most typing is done in bursts rather than continuously. between these bursts of activity you should rest your …

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$top of monitor at eye level or just below monitor rough fans a away back straight elbows close to body backrest ‘supporting lower back adjustable a ‘swivel chair front of seat not pressing feet flat on ground on back of knees or resting on footrest def add5 (x): return x+5 def dotwrite (ast) : nodename = getnodename () label=symbol.sym_name.get (int (ast[0]),ast[0]) print ' ss [label="%s' % (nodename, label), if isinstance(ast[1], str): if ast[1].strip(): print '= %s"];' % ast[1] else: print '"]' else: print '"];' children = [] for n, child in enumerate (ast[1:]) : children. append (dotwrite (child) ) print ' ss —> {' % nodename, for name in children: print '%s' % name,$

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prezentatsiya powerpoint 1 tashkent university of information technologies named after muhammad al-khwarizmi english frl1114 workstation health and safety lesson 29 foreign languages department english 1 2 computer health problems english ergonomics 3 ergonomics is the science that studies how people interact with machines and the environment (furniture, lighting, etc.). the objective is to find ways to maximize safety, comfort, job performance, and accuracy and to deal with the different computer health problems. english 4 computer health problems can be an umbrella term for the various problems a computer user can develop from extended and incorrect computer use. a computer user may experience many physical health problems from using computers extensively over a prolonged period of time ...

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