Essays about: "Time Frequency"

Showing result 1 - 5 of 1250 essays containing the words Time Frequency.

  1. 1. Spatio-temporal drought characteristics in the Limpopo basin from 1918 to 2018 - A case study based on analysis of the Standardized Precipitation Evaporation Index (SPEI)

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Sandra Domingos Sambo; [2021]
    Keywords : rdought; Standardized Precipitation Evapotranspiration Index; Limpopo River basin; Normalized difference vegetation index; Mann-Kendall Test; Correlation analysis; Earth and Environmental Sciences;

    Abstract : The identification of the characteristics of drought are of great importance in water resources planning and management. This study explored the characteristics of drought at Limpopo River Basin (LRB) from 1918 to 2018. READ MORE

  2. 2. Deep Learning with Importance Sampling for Brain Tumor MR Segmentation

    University essay from KTH/Optimeringslära och systemteori

    Author : Hanna Westermark; [2021]
    Keywords : Deep learning; importance sampling; segmentation; convolutional neural networks; MRI; brain tumour; Djupinlärning; importance sampling; segmentering; faltningsnätverk; MRI; hjärntumör;

    Abstract : Segmentation of magnetic resonance images is an important part of planning radiotherapy treat-ments for patients with brain tumours but due to the number of images contained within a scan and the level of detail required, manual segmentation is a time consuming task. Convolutional neural networks have been proposed as tools for automated segmentation and shown promising results. READ MORE

  3. 3. Classification of EEG Data Using Convolutional Neural Networks and the Scaled Reassigned Spectrogram

    University essay from Lunds universitet/Matematisk statistik

    Author : Karin Pagels; [2021]
    Keywords : Mathematics and Statistics;

    Abstract : Electroencephalography (EEG) is a medical technique for measuring brain activity through several channels connected to the scalp. Interpreting EEG data is a difficult problem because of the large amount of noise contained in the data. READ MORE

  4. 4. Gender differences in usage of bitch and cunt across time : An analysis of findings in the BNC1994 and the BNC2014

    University essay from Högskolan i Gävle/Avdelningen för humaniora

    Author : Josefina Siikavaara; [2021]
    Keywords : swearing; taboo language; bitch; cunt; gender differences; age differences; British National Corpus; linguistics;

    Abstract : This essay presents a study on gender differences with a focus on swearing and taboo language, based on findings from the BNC1994 and the BNC2014. Bitch and cunt are two words that are linked to the female gender, but previous research has shown that they are used differently by men and women. READ MORE

  5. 5. Optimizing Weighting Factors for Multiple Window Spectrum Estimates

    University essay from Lunds universitet/Matematisk statistik

    Author : Marlon Almström; [2021]
    Keywords : Mathematics and Statistics;

    Abstract : Spectral estimation can be done using different techniques, where averaging the periodogram using multiple windows is one of the techniques. When using multiple windows, the spectral estimate is commonly obtained by having the windows for the subspectra equally weighted. READ MORE