Human Performance T2B
T 2 B
T 2 B
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Flashcards
Body temperature during sleeping?
Night => around 2300 => low => Long sleep/ deep sleep around 5:00 REM => high around 12:00
2 functions of sleep
1. Slow waves sleep or deep sleep: Physical recovery from fatigue
2. Paradoxical sleep (REM: Rapid Eye Movement): Memorisation, Learning, Dreams
Ist schlafzeit aufholbar?
ja => Aber nur deep sleep debt is cumulative ==> BEST 16 Wach, 8h schlafen
The physiological effect of fatigue
a) Decrease body temperature
b) Bad coordination
c) Increase of the heart frequency
d) feeling of sleepines
e) decreasing of the muscular strength
==> Gähnen
The psychological effect of fatigue: Decrease/Increae
Decrease: Memory performance, error detection, Communication capacities, Vigilance (Aktiveriung des zentralen Nervensystems), cooperation
INcreae: Time reaction, erros aggressiveness, stress
Fatigue and Risk?
Zuerst steigen die Fehler an => dan reist man sich nochmals zusammen und verbessert sich wieder bis zu einem Punkt, wo man die Müdigkeit nicht mehr unterdrücken kann
Was kannst du über das Riskio der Müdigkeit sagen, verglichen mit der Arbeitszeit?
Morgeneinsatz: Accident Risiko steigt erst nach 8h an ==> Bei Abendeinsätzen: nach 6H ==> Steigt viel stärker an
Fatigue Management
1. Napping (20 min -2 h) 2. keeping a healthy life style:avoid rich fat meals, physical activity, manage your sleep needs
Westwards flights
Besser => more REM slep in the first part of the sleep & frequency awakenings in the second part ==> Tendency to sleepiness during the day ====> 3 nights to recover a normal sleep
Eastwards flight
first night can be better because of the accumulated sleep debt => Next nights sleep is more unstable ==> 7 days to recover a normal quality of sleep
Jetlag: stoperver less than 48h
keep the rhythm of the departure country
Jetlag: holdover more than 48h
change the rhythm of the arrival zone
other strategies for Jetlag:
Regularly alternate sleep/wake periods; Keep regular meal times; Manage exposure (aussetzten) to day-light ====> 1 -1,5 h verschiebt es sich pro Tag
What is stress? Stressfactors ?
Ausschüttung von Adrenalin =>Stress factors activate the stress mechanism which in turn leads to a stress reaction
The biological stress mechanism
Homeostasis => a balance of forces => 2 forces: 1. Disturbing forces= Stress 2. Neutalizing forces = Adaptive response ===> Balance im Körper = Homeostasis
2 Typen beim Stress => response to stress =a physical priming for action
1. Stand & Fight: 2. Run away
a physical priming for action => In- and decreasining
Increasing: Heart & respiration rates; skin preparation, pupils dilation, blood pressure, muscle strength, secretion of adrenaline
Decreasing: gastric functions; abdominaö & surface blood flow
==> Sport ist das beste, um Stress abzubauen
die 3 Status beim Stress
0. Stress 1. Alarm => Adrenalin 2. Resistance => Cortisol 3. Exhaustion ==> ANS: Auomated Nervous System
4 Stress Faktoren
1. Physical: Environmental factors (traffic/Noise) and Internal factors (hunger/fatigue, lack of sleep)
2. Work related: External factors (word under/or overload; Stress transfer) and Internal factors ( Knowledge Based; No time; Bad solution)
3. Personal: Negative events; bus also positive; daily stressors have a weight and are cummulative
4. Psychological: Anticipatory stress ==> z.B. 1 Fallschrimsprung
===> Stress is kumulativ
2 Stressarten
1. Eustress: positiver Stress => successful Managent
2. Distress: negativer Stress
Warning of stress
Fixation, mental block, increase of risk behavior, regression to earlier habits
Stress Management: 2 Arten
1. COPING: efforts to prevent, control, reduce or learn to tolerate the threats that lead to stress ==> Emotion and Problem -focussed coping
2. Long-term strategies: Exercies, learn to say no, laugh, eat well and get enough sleep, breathing
Was sagt das Shannon & Weaver model?
Transmission/Communication nur über den Gehörinn => durch Noise können Missverständnisse entstehen
Berlo Model?
Wie etwas (Mimik/Gestik) hat einen grossen Einfluss => Haben nicht nur den Gehörsinn
The context model
In einem geschlossenen Kreise => Wurde es verstanden (JA/NEIN) ==> Gibt Feedback
active listening
zuhören ist aktiv ==> We have 2 ears and one mouth
Active listening; wie viel % verbaichen wir unserer Zeit beim zuhören?
a) We spend 42% of our time listening
b) One of the biggest reasons for failure within the aviation environment is failure to hear
c) This skill requires more than passive attention, it requires active involvement
Verbal or Non-Verbal, über was nimmt man mehr auf?
über das Non-verbale nimmt man mehr auf ?> über 50%
4 communications level?
1. Factual level: informative
2. Self disclosure: Was habe ich damit gemeint
3. Appeal level: Was hat die andere Person verstanden
4. Relation level: Beziehung zueienander
Explicit communication?
Nicht interpretier bar => Fliegerei => Was tatsächlich geschrieben wurde
Implicit communication?
Was der Kontext hergibt
What you can say about radio communication:
a) Radio communication is fragile (we don't see our interlocutor)
b) This loss needs to be compensated
c) Phraseology and read back are necessary protections
Wie sollte man mit einem persönlichen Konflikt umgehen?
Never leave anything in a changing state or a task uncompleted to start a discussion ==> Streit aufs debriefing verschieben
Briefings ?
1. Must be short
2. Must be indicidually prepared for each flight
3. Must be understood and supported by all crew memebers
For what are call outs?
to maintain and update crew situation awareness
For what are procedures?
Procedures help sharing a same context => Vital also for all communications without visual feedback
Checklists; was ist wichtig?
1. das wichtige zuerst oder am Schluss
2. managing a CL at the same tome maintaince staff or cabin crew enter the cockpit
3. most critical point must be oncluded in several CL
4. do not coincide with other task
5- sub divided
5. the items in the CL must follow a geographical sequence
4 conflict types:
1. Intra-personal: Mit mir selber
2. Inter-personal: Mit einer anderern Person
3. Intra-group: Innerhalb der Gruppe
4. Inter-group: Gruppe gegen Gruppe
Destructive conflicts have negative safety implications
Crew work is impaired, which may reveal critical in the vent of an emergency
In case of in-flight stress