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Träfflista för sökning "FÖRF:(Ola Karlsson) "

Sökning: FÖRF:(Ola Karlsson)

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1.
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2.
  • Karlsson, Ola, 1964- (författare)
  • Nyorden blir till en kulturskatt
  • 2024
  • Ingår i: Språktidningen. - 1654-5028. ; :1, s. 25-25
  • Tidskriftsartikel (populärvet., debatt m.m.)
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3.
  • Karlsson, Ola, 1964- (författare)
  • Snabba skrivregler : I skolan och på jobbet
  • 2024. - 1
  • Bok (populärvet., debatt m.m.)abstract
    • Snabba skrivregler vänder sig i första hand sig till elever och lärare i högstadiet och gymnasiet men kan även användas av till exempel sfi-studerande, högskolestudenter och svenskstuderande utomlands – eller av den som bara vill ha en lättläst sammanfattning av de viktigaste skrivreglerna för svenskan, inte minst på jobbet. Snabba skrivregler ger råd om bland annat skiljetecken, skrivtecken och kommatering, stor och liten bokstav, förkortningar, referat, citat och källhantering, grafisk form och specialtecken på tangentbord och skärm.
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4.
  • Hanell, Linnea, 1986-, et al. (författare)
  • Orden som gjorde raketkarriär!
  • 2023
  • Ingår i: Språktidningen. - 1654-5028. ; :1
  • Tidskriftsartikel (populärvet., debatt m.m.)
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5.
  • Hanell, Linnea, 1986-, et al. (författare)
  • Här är årets nyordsdos
  • 2022
  • Ingår i: Språktidningen. - 1654-5028. ; :1
  • Tidskriftsartikel (populärvet., debatt m.m.)
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6.
  • Arvidsson, Emma, et al. (författare)
  • Quantification of the absorption and scattering effects of diffusers in a room with absorbent ceiling
  • 2021
  • Ingår i: Buildings. - : MDPI AG. - 2075-5309. ; 11:12
  • Tidskriftsartikel (refereegranskat)abstract
    • In ordinary public rooms, such as classrooms and offices, an absorbent ceiling is the typical first acoustic action. This treatment provides a good acoustic baseline. However, an improvement of specific room acoustic parameters, operating for specific frequencies, can be needed. It has been seen that diffusing elements can be effective additional treatment. In order to choose the right design, placement, and quantity of diffusers, a model to estimate the effect on the acoustics is necessary. This study evaluated whether an SEA model could be used for that purpose, particularly for the cases where diffusers are used in combination with an absorbent ceiling. It was investigated whether the model could handle different quantities of diffusing elements, varied diffusion characteristics, and varied installation patterns. It was found that the model was sensitive to these changes, given that the output from the model in terms of acoustic properties will be reflected by the change of diffuser configuration design. It was also seen that the absorption and scattering of the diffusers could be quantified in a laboratory environment: a reverberation chamber. Through the SEA model, these quantities could be transformed to a full-scale room for estimation of the room acoustic parameters.
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7.
  • Arvidsson, Emma, et al. (författare)
  • Subjective experience of speech depending on the acoustic treatment in an ordinary room
  • 2021
  • Ingår i: International Journal of Environmental Research and Public Health. - : MDPI AG. - 1661-7827 .- 1660-4601. ; 18:23
  • Tidskriftsartikel (refereegranskat)abstract
    • In environments such as classrooms and offices, complex tasks are performed. A satisfac-tory acoustic environment is critical for the performance of such tasks. To ensure a good acoustic environment, the right acoustic treatment must be used. The relation between different room acoustic treatments and how they affect speech perception in these types of rooms is not yet fully under-stood. In this study, speech perception was evaluated for three different configurations using ab-sorbers and diffusers. Twenty-nine participants reported on their subjective experience of speech in respect of different configurations in different positions in a room. They judged sound quality and attributes related to speech perception. In addition, the jury members ranked the different acoustic environments. The subjective experience was related to the different room acoustic treatments and the room acoustic parameters of speech clarity, reverberation time and sound strength. It was found that people, on average, rated treatments with a high degree of absorption as best. This configura-tion had the highest speech clarity value and lowest values for reverberation time and sound strength. The perceived sound quality could be correlated to speech clarity, while attributes related to speech perception had the strongest association with reverberation time.
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8.
  • Arvidsson, Emma, et al. (författare)
  • The Difference in Subjective Experience Related to Acoustic Treatments in an Ordinary Public Room : A Case Study
  • 2021
  • Ingår i: Acoustics. - : MDPI AG. - 2624-599X. ; 3
  • Tidskriftsartikel (refereegranskat)abstract
    • In ordinary public rooms absorbent ceilings are normally used. However, reflective material such as diffusers can also be useful to improve the acoustic performance for this type of environment. In this study, different combinations of absorbers and diffusers have been used. The study investigates whether a test group of 29 people perceived sound in an ordinary room differently depending on the type of treatment. Comparisons of the same position in a room for different configurations as well as different positions within one configuration were made. The subjective judgements were compared to the room acoustic measures T20, C50 and G and the difference in the values of these parameters. It was found that when evaluating the different positions in a room, the configuration including diffusers was perceived to a greater extent as being similar in the different positions in the room when compared to the configuration with absorbers on the walls. It was also seen that C50 was the parameter that mainly affected the perception, with the difference needing to be 2 dB to recognize a difference. However, the room acoustic measurements could not fully explain the differences obtained in perception. In addition, the subjective sound image created by different types of treatments was also shown to have an important impact on the perception.
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9.
  • Karlsson, Ola (författare)
  • Coronan föder språklig kreativitet
  • 2021
  • Annan publikation (populärvet., debatt m.m.)abstract
    • Nya fenomen i samhället föder nya ord. Med coronapandemin har vi på kort tid sett mängder av nya fenomen runt omkring oss – och därmed ett stor antal nya ord och uttryck i svenskan. Så vilka ordskapartendenser kan vi se i detta ordflöde?
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10.
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