• The EOS Formulation for Linear and Nonlinear Transient Scattering Problems 

      Lin, Aihua (Doctoral thesis; Doktorgradsavhandling, 2019-03-29)
      This thesis developed the EOS formulations of solving nonlinear transient scatterings, both for 1D case and 3D Maxwell's equations. This method can be accurately and stably implemented using one particular choice of numerical scheme for the inside of the objects and for the required integral representations of the boundary values. For a stable numerical solution, the time step needs to be confined ...
    • Genetic Overlap Between Global Cortical Brain Structure, C-Reactive Protein, and White Blood Cell Counts 

      Parker, Nadine; Cheng, Weiqiu; Hindley, Guy; O'Connell, Kevin Sean; Karthikeyan, Sandeep; Holen, Børge; Shadrin, Alexey; Rahman, Zillur; Karadag, Naz; Bahrami, Shahram; Lin, Aihua; Steen, Nils Eiel; Ueland, Thor; Aukrust, Pål; Djurovic, Srdjan; Dale, Anders; Smeland, Olav Bjerkehagen; Frei, Oleksandr; Andreassen, Ole (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-20)
      BACKGROUND: For many brain disorders, a subset of patients jointly exhibit alterations in cortical brain structure and elevated levels of circulating immune markers. This may be driven in part by shared genetic architecture. Therefore, we investigated the phenotypic and genetic associations linking global cortical surface area and thickness with blood immune markers (i.e., white blood cell counts ...
    • On the Ewald Oseen scattering formulation for light scattering: stability, singularity and parallelization. 

      Lin, Aihua; Jakobsen, Per Kristen (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-15)
      In this paper we discuss some of the mathematical and numerical issues that have to be addressed when calculating wave scattering using the Ewald Oseen scattering (EOS) formulation which is newly developed for solving linear and nonlinear scattering problems. The discussion is framed in context of light scattering by objects whose optical response can be of a nonlinear and/or inhomogeneous nature. ...
    • Shared Genetic Loci Between Schizophrenia and White Blood Cell Counts Suggest Genetically Determined Systemic Immune Abnormalities 

      Steen, Nils Eiel; Rahman, Zillur; Szabo, Attila; Hindley, Guy; Parker, Nadine; Cheng, Weiqiu; Lin, Aihua; O'Connell, Kevin S; Sheikh, Mashhood Ahmed; Shadrin, Alexey; Bahrami, Shahram; Karthikeyan, Sandeep; Hoseth, Eva Zsuzsanna; Dale, Anders M; Aukrust, Pål; Smeland, Olav Bjerkehagen; Ueland, Thor; Frei, Oleksandr; Djurovic, Srdjan; Andreassen, Ole (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-15)
      Background - Immune mechanisms are indicated in schizophrenia (SCZ). Recent genome-wide association studies (GWAS) have identified genetic variants associated with SCZ and immune-related phenotypes. Here, we use cutting edge statistical tools to identify shared genetic variants between SCZ and white blood cell (WBC) counts and further understand the role of the immune system in SCZ.<p> <p>Study ...