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Showing result 1 - 5 of 40 essays matching the above criteria.

  1. 1. Numerical Study on Acoustic Phenomena in Cavities for Aero-engine Applications

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Eglantin Gjoni; [2023]
    Keywords : ;

    Abstract : For about seventy years, noise generated by grazing flow past a cavity has been thoroughly studied. Yet, a coherent theory that describes such phenomena is missing. Lately, this phenomena started to be investigated in bleeding systems of aero-engines. READ MORE

  3. 2. 3D geospatial data requirements for simulating noise using the Nord2000 model: Case study of the impact of building façade types and roof configurations on simulated traffic noise levels

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Soraya Hosseinvash Azari; [2023]
    Keywords : Physical Geography; Ecosystem Analysis; noise simulation; traffic; Nord2000 model; building façade types; roof configurations; geospatial data; 3CIM; SoundPLAN; acoustic properties; urban areas; 3D city model; Earth and Environmental Sciences;

    Abstract : The European Union implements the Environmental Noise Directive (END), which offers a framework for evaluating and assessing environmental noise. All EU members are required to create strategic noise maps to inform the public about noise pollution and its effects. READ MORE

  4. 3. A Machine Learning Approach to Skin Cancer Delineation on Photoacoustic Imaging

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Beräkningsbiologi och biologisk fysik - Genomgår omorganisation

    Author : Alice Fracchia; [2023]
    Keywords : Skin cancer; carcinoma; photoacoustic imaging; ultrasound imaging; machine learning; dimensionality reduction; sandpiles algorithm; active contour; multilayer perception MLP ; convolutional neural networks CNN ; autoencoder; Physics and Astronomy;

    Abstract : Skin cancer is a growing public health concern due to its prevalence among the population. Current clinical procedures require high invasiveness and multiple surgeries, which are responsible for patient discomfort and high medical expenses. READ MORE

  5. 4. The effect of age and different speech tasks on the Acoustic Voice Quality Index

    University essay from Umeå universitet/Logopedi

    Author : Rosanna Rehn; [2023]
    Keywords : AVQI; acoustic voice quality index - acoustic evaluation - overall voice quality - multiparametric voice assessment - sustained vowel - continuous speech;

    Abstract : Background Previous research has emphasized the importance of objectivity in voice quality evaluation. Acoustic voice quality index (AVQI) is a multiparametric objective index, that quantifies overall voice quality. Over the past decade, international studies have demonstrated strong diagnostic accuracy and sensitivity of AVQI to voice disorders. READ MORE

  6. 5. Evaluating forest restoration effects on timing of avian dawn chorus in Ranomafana National Park, Madagascar

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Marjolein Pijper; [2023]
    Keywords : acoustic monitoring; forest restoration; dawn chorus; avian singing; bird monitoring; automatic recognition;

    Abstract : Monitoring of forest restoration efforts is essential to ensure healthy, self-sustaining tropical rainforests. Passive acoustic monitoring is used to monitor vocal activity of birds, which play a key role in forest ecosystems as seed dispersers. READ MORE