Sökning: "preconditioning"

Visar resultat 1 - 5 av 16 uppsatser innehållade ordet preconditioning.

  1. 1. Randomized Diagonal Estimation

    Master-uppsats, KTH/Matematik (Avd.)

    Författare :Niclas Joshua Popp; [2023]
    Nyckelord :Diagonal estimation; randomized numerical linear algebra; low-rank approximation; matrix functions; Diagonalestimering; randomiserad numerisk linjär algebra; lågrankad approximation; matrisfunktioner;

    Sammanfattning : Implicit diagonal estimation is a long-standing problem that is concerned with approximating the diagonal of a matrix that can only be accessed through matrix-vector products. It is of interest in various fields of application, such as network science, material science and machine learning. LÄS MER

  3. 2. Investigation of Influential Contexts on Mining-front Seismicity at Kiirunavaara Mine

    Master-uppsats, Luleå tekniska universitet/Geoteknologi

    Författare :Bernardo Filizzola; [2023]
    Nyckelord :;

    Sammanfattning : Mining at great depths has become the reality for the mining industry in Sweden, that faces challenges in terms of increasing seismic events and sometimes intrinsically related rock mass failure. Kiirunavaara mine is owned by LKAB (located at north Sweden) and the company has been dealing with seismicity in a daily basis once the mine has been regarded as seismically active since 2007-2008 and presently has the largest seismic monitoring system in the world. LÄS MER

  4. 3. Towards a Reliable and Valid Analysis of VO2m Off-Kinetics

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Hrafnkell Þráinsson; [2022]
    Nyckelord :Sports Technology; Near-infrared spectroscopy; Muscle oxidative capacity; Occlusion; Software; Automation; Idrottsteknologi; Near-infrared spectroscopy; Muskulaturens oxidativa förmåga; Ocklusion; Programvara; Automatisering;

    Sammanfattning : Non-invasive methods to evaluate skeletal muscle oxidative capacity have beenemerging as a viable substitute for invasive methods in recent years. One ofthose methods utilises near-infrared spectroscopy (NIRS) to calculate V O2mrecovery off-kinetics following an exercise. LÄS MER

  5. 4. Megaregioner och deras periferier

    Kandidat-uppsats, Lunds universitet/Institutionen för kulturgeografi och ekonomisk geografi

    Författare :Anja Möller; [2022]
    Nyckelord :Regional competitiveness; megaregions; core-periphery relations; interregional networks; place based leadership; Social Sciences;

    Sammanfattning : The study of how regional and global resources are allocated geographically, the incentives for these trends, and what strategies can be used to prevent adverse effects between economic core areas and peripheral areas, are key themes in economic geography, and of crucial interest in studies of regional development. This paper addresses these issues in light of the relationship between the emerging Scandinavian megaregion and two of its peripheral municipalities – Växjö and Skövde. LÄS MER

  7. 5. Use of Thermal Analysis to reduce the Microporosity in ductile iron. : Analysis of micro porosity casting defect

    Master-uppsats, Jönköping University/JTH, Material och tillverkning

    Författare :Adriana Mura; [2022]
    Nyckelord :Nucleation; Ductile Cast iron; Inoculation; Preconditioning; Over-inoculation; Charge materials; Hypoeutectic; Eutectic; Hypereutectic; Shrinkage;

    Sammanfattning : It became always more important in Cast Iron Foundry to have a process control system that helps to reduce the variability and follow the correct specifications, to simplify the detection of eventual inoculation problems or incorrect working ranges.In the thesis, it is presented a case study of a specific defect of microporosity that appeared in the internal areas of some castings. LÄS MER