Sökning: "erasure"

Visar resultat 11 - 15 av 35 avhandlingar innehållade ordet erasure.

  1. 11. Optical Memories and Processing in Time- and Frequency Domain

    Författare :Baozhu Luo; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Optical storage; photon echo; spectral hole burning; nonlinear optics; fiber amplifier; logical operation; phase retrieval; polarization holographic recording and retrieval; optical processing; Atomic and molecular physics; Atom- och molekylärfysik; Fysicumarkivet A:1998:Luo;

    Sammanfattning : Spectral hole burning and photon echoes are the techniques for frequency-selective optical memories, which have the potential to increase areal data storage density by a factor 10**7. They also have the capability to perform in-memory data processing. LÄS MER

  3. 12. Coding for the Wiretap Channel

    Författare :Mattias Andersson; Mikael Skoglund; Michael Lentmaier; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telecommunication; Telekommunikation;

    Sammanfattning : We consider code design for Wyner’s wiretap channel. Optimal coding schemes for this channel require an overall code that is capacity achieving for the main channel, partitioned into smaller subcodes, all of which are capacity achieving for the wiretapper’s channel. LÄS MER

  4. 13. A Serendipitous Journey through Stochastic Processes

    Författare :Ludovico Theo Giorgini; John S Wettlaufer; Valerio Lucarini; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Stochastic process; statistical physics; machine learning; Theoretical Physics; teoretisk fysik;

    Sammanfattning : In this PhD thesis we will present some new insights in different problems in the field of stochastic processes. A stochastic resonance system is studied using path integral techniques, originally developed in quantum field theory, to recover the optimal means through which noise self-organises before a rare transition from one potential well to the other. LÄS MER

  5. 14. MAC, A Verified Information-Flow Control Library

    Författare :Marco Vassena; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Haskell; NonInterference; Agda; Functional Programming; Information-Flow Control;

    Sammanfattning : Information Flow Control (IFC) is a language-based security mechanism that tracks where data flows within a program and prevents leakage of sensitive data. IFC has been embedded in pure functional languages such as Haskell, in the form of a library, thus reducing the implementation and maintenance effort and fostering a secure-by-construction programming-model. LÄS MER

  7. 15. Verifying Information Flow Control Libraries

    Författare :Marco Vassena; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Information Flow Control (IFC) is a principled approach to protecting the confidentiality and integrity of data in software systems. Intuitively, IFC sys- tems associate data with security labels that track and restrict flows of information throughout a program in order to enforce security. LÄS MER