Sökning: "frequency compression"

Visar resultat 1 - 5 av 42 uppsatser innehållade orden frequency compression.

  1. 1. Molecular Insights into the Interactions of Monovalent Cations with Highly charged Fatty Acid Monolayers

    Master-uppsats, KTH/Kemi

    Författare :Ran Carlhamn Rasmussen; [2023]
    Nyckelord :VSFS; Langmuir monolayer; ion specific effects; modified Poisson Boltzmann; carboxylic acid; VSFS; Langmuir monolager; jonspecifika effekter; modifierad Poisson Boltzmann; karboxylsyra;

    Sammanfattning : Vibrational sum frequency spectroscopy har använts för att studera interaktionerna mellan monovalenta joner och laddade fettsyramonolager. Subfasen bestod av utvalda alkalihydroxidsaltlösningar med pH12, med huvudfokus på cesiumjonen. LÄS MER

  3. 2. Enhancing failure prediction from timeseries histogram data : through fine-tuned lower-dimensional representations

    Master-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Vijay Jayaraman; [2023]
    Nyckelord :time-series prediction; time-series histogram analysis; Convolution Neural Network CNN ; Autoencoder; Weibull Time-to-Event WTTE ; Recurrent Neural Network RNN ; Engine turbo charger failure prediciton;

    Sammanfattning : Histogram data are widely used for compressing high-frequency time-series signals due to their ability to capture distributional informa-tion. However, this compression comes at the cost of increased di-mensionality and loss of contextual details from the original features. LÄS MER

  4. 3. RF Compressor (SLED) Phase-Modulation to Reduce Peak Fields in the MAX IV Linear Accelerator

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Joel Ekström; [2023]
    Nyckelord :Accelerator; MAX IV; LINAC; Phase-modulation; SLED; Pulse compression; Technology and Engineering;

    Sammanfattning : Modern particle accelerators need strong electric fields in order to produce high energy particles. Such high voltages are typically reached by injecting pulsed radio frequency power through several steps of amplification. At the end, pulse compression is used to further improve the energy gain at the cost of pulse-length. LÄS MER

  5. 4. Exploiting Spatial Redundancy and Approximate Computing for Area Efficient Image Compression

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Saurav Arjun; [2022]
    Nyckelord :Image Compression; VLSI; Spatial redundancy; DCT; Compression; System Verilog; Technology and Engineering;

    Sammanfattning : Owing to the intensive computation involved in the Discrete Cosine Transform during image com- pression, the design of the efficient hardware architectures for fast computation of the transform has become imperative, especially for real-time applications. Although fast computation techniques have been able to minimise the hardware computation complexity to a certain limit, they could further extend the research to figure out the interesting approaches which can be implemented on applications where power, speed and area are crucial factors to determine the performance of the system. LÄS MER

  7. 5. An Analysis of Data Compression Algorithms in the Context of Ultrasonic Bat Bioacoustics

    Kandidat-uppsats, Linnéuniversitetet/Institutionen för datavetenskap och medieteknik (DM)

    Författare :Max Anderson; Benjamin Anderson; [2022]
    Nyckelord :bioacoustics; data compression; bats; audio data; ultrasonic;

    Sammanfattning : Audio data compression seeks to reduce the size of sound files, making them easier to store and transfer, and is thus a highly valued tool for those working with large sets of audio data. For example, some biologists work with audio recordings of bats, which are well known for their frequent use of ultrasonic echolocation, and so these biologists can accrue massive amounts of high frequency audio data. LÄS MER