Sökning: "Cypher"

Visar resultat 6 - 10 av 11 uppsatser innehållade ordet Cypher.

  1. 6. Decyphering the Geheimschreiber, a Machine Learning approach : Recreating and breaking the Siemens and Halske T52 used during World War II to secure communications in Sweden

    Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Oriol Closa Márquez; [2019]
    Nyckelord :;

    Sammanfattning : Historically, rotor cyphers have been used in order to secure written communications. Mechanical machines provided continuous streams of characters for encoding secret messages that were sent to the other part of the continent by means of telephone cables or radio. LÄS MER

  3. 7. Mysteriet kring Karl XI:s namnchiffer från Läckö slott

    Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvård

    Författare :Angelica Fingal; [2018-06-19]
    Nyckelord :1700th century royal cypher; pigment analysis XRF; tool-marks; charcoal rubbing; 3D-modelling; wood-identification SEM; Lacko castle;

    Sammanfattning : A royal cypher from Läckö castle is stored in the Department of conservation at The University of Gothenburg, Sweden. The cypher did not have much information around it when the investigation started. That all changed when this thesis took place. LÄS MER

  4. 8. Implementing and Evaluating a Breadth-First Search in Cypher

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för datavetenskap

    Författare :Alexander Olsson; Therese Magnusson; [2018]
    Nyckelord :Breadth-First Search; Graph Database; Neo4j; Cypher; Master’s Thesis; Technology and Engineering;

    Sammanfattning : This report covers the implementation and evaluation of a Breadth-First Search operand for the Neo4j graph database and the Cypher query language. The evaluation compared the pre-existing Depth-First Search operand with both a non-optimized and two different optimized Breadth-First Searches. LÄS MER

  5. 9. Multi-threaded execution of Cypher queries

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för datavetenskap

    Författare :Felix Åkerlund; Ragnar Mellbin; [2017]
    Nyckelord :Cypher; Neo4j; query; graph database; parallel execution; parallel query; parallel database; openCypher; Technology and Engineering;

    Sammanfattning : In this report we investigate parallel execution of queries in graph databases. We analyse different methods of parallelization, how to introduce query parallelization to a graph database, which query operations that are suitable for parallelization and if we can improve the execution time of a single query. LÄS MER

  7. 10. Accelerating graph isomorphismqueries in a graph database usingthe GPU

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för informationsteknologi

    Författare :Simon Evertsson; [2016]
    Nyckelord :;

    Sammanfattning : Over the last decade the popularity of utilizing the parallel nature of thegraphical processing unit in general purpose problems has grown a lot. TodayGPUs are used in many different fields where one of them is the accelerationof database systems. Graph databases are a kind of database systems that havegained popularity in recent years. LÄS MER