Sökning: "working capacity"

Visar resultat 6 - 10 av 286 avhandlingar innehållade orden working capacity.

  1. 6. Non-Azeotropic Mixtures as Working Fluids in Heat Pumps: A theoretical and experimental study

    Författare :Marine Högberg; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HCFC123; HCFC124a; HCFC22; performance comparison; COP; non-azeotropic mixture; capacity; sensitivity analysis; HFC152a; heat pump; CFC114; ethyl chloride; experimental study; HCFC142b; two-stage cycle;

    Sammanfattning : Due to the fact that CFC (Chloro-Fluoro-Carbon) fluids will be forbidden as working fluids in heat pumps for environmental reasons, there is an urgent need for alternatives. As one alternative type of fluid, non-azeotropic mixtures have been suggested. This thesis deals with such mixtures. LÄS MER

  3. 7. Assessing cognitive spare capacity as a measure of listening effort using the Auditory Inference Span Test

    Författare :Niklas Rönnberg; Stefan Stenfelt; Mary Rudner; Thomas Lunner; Larry Humes; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Listening effort; Cognitive spare capacity; Speech-in-noise; Cognition; Working memory; Updating; Hearing impairment;

    Sammanfattning : Hearing loss has a negative effect on the daily life of 10-15% of the world’s population. One of the most common ways to treat a hearing loss is to fit hearing aids which increases audibility by providing amplification. Hearing aids thus improve speech reception in quiet, but listening in noise is nevertheless often difficult and stressful. LÄS MER

  4. 8. Experimental studies of human-computer interaction : working memory and mental workload in complex cognition

    Författare :Erik Wästlund; Karlstads universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Information processing; Problem-solving; Working memory; ST-WM; LT-WM; Dual-task; Mental workload; Reading; Page layout; VDT; Convergent; Divergent; Psykologi; Psychology; Information processing; Problem-solving; Working memory; ST-WM; LT-WM;

    Sammanfattning : Complex cognition is readily described as cognitive tasks requiring the coordination of multiple steps of processing or tasks exceeding short term memory capacity. Similarly, mental workload may be described as the use and temporary expenditure of a finite amount of information processing capacity. LÄS MER

  5. 9. The role of working memory capacity in auditory distraction

    Författare :Patrik Sörqvist; Jerker Rönnberg; Staffan Hygge; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Teknisk psykologi; Engineering Psychology; Environmental psychology;

    Sammanfattning : The basis of individual differences in susceptibility to auditory distraction has been a research field largely ignored. The current work presents four studies demonstrating that individual differences in working memory capacity (WMC) are related to the magnitude of auditory distraction. LÄS MER

  7. 10. Cognition Seen Through the Eyes of Hearing Aid Users : Working Memory Resource Allocation for Speech Perception and Recall

    Författare :Andreea Micula; Jerker Rönnberg; Elaine Hoi Ning Ng; Piers Dawes; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Working memory; Free recall; Pupillary responses; Noise reduction; Arbetsminne; Återgivning; Pupillmätning; Brusreducering;

    Sammanfattning : This thesis investigates how hearing aid users allocate working (WM) memory resources under various task demands when listening to and storing speech in memory for later recall. This was done by combining an auditory recall task, the Sentence-final Word Identification and Recall (SWIR) test, with pupillometry. LÄS MER