Sökning: "point vacancy"

Visar resultat 1 - 5 av 38 avhandlingar innehållade orden point vacancy.

1. 1. On the Vacancy for Coverage Processes and some Related Sampling Strategies

   Författare :Jonas Bygren; Lennart Bondesson; Sara Sjöstedt deLuna; Magnus Ekström; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; absence presence; binomial point process; coverage process; extrapolation; hard-core distance; MCMC; point vacancy; Poisson point process; plot vacancy; spatial point process; Strauss process; vacancy; Mathematical statistics; Matematisk statistik; Mathematical Statistics; matematisk statistik;

   Sammanfattning : .... LÄS MER

3. 2. Coverage problems for Strauss disc processes

   Författare :Jessica Fahlén; Sara de Luna; Lennart Bondesson; Sven-Erick Alm; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Binomial point process; coverage process; disc process; hard-core distance; McMC; Poisson point process; spatial point process; Strauss process; vacancy; Statistics; Statistik; Mathematical Statistics; matematisk statistik;

   Sammanfattning : .... LÄS MER

4. 3. Essays on spatial point processes and bioinformatics

   Författare :Jessica Fahlén; Patrik Rydén; Xavier de Luna; Yudi Pawitan; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Coverage process; vacancy; microarray; pre-processing; sensitivity; bias; dye-normalization; FFPE; storage time effects; Statistics; Statistik; Statistics; statistik;

   Sammanfattning : This thesis consists of two separate parts. The first part consists of one paper and considers problems concerning spatial point processes and the second part includes three papers in the field of bioinformatics. LÄS MER

5. 4. Point defects and ion conduction in solid oxides: a first-principles case study of La2Zr2O7

   Författare :Joakim Nyman; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; proton; self compensation; hydrogen economy; DFT; La2Zr2O7; acceptor doping; lanthanum zirconate; oxygen vacancy; SOFC; pyrochlore; point defect; trapping; computational methods; solid oxide; charge compensation; first principles; ion conduction; solid oxide fuel cell; ceramic electrolyte; defect cluster; fuel cell; hydrogen;

   Sammanfattning : In the endeavor to attain a clean environment and sustainable energy consumption, the notion of a future hydrogen economy stands out as one of the grandest visions. Striving for this vision, a critical task lies in optimizing the performance of the fuel-cell devices responsible for extracting electric power from the energy stored in hydrogen molecules. LÄS MER

7. 5. On hydrogen point defects in perovskite oxides

   Författare :Erik Jedvik Granhed; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; density functional theory; oxyhydride; phonon; point defects; chemical expansion; polaron; BaZrO3; proton conductor; BaTiO3;

   Sammanfattning : Oxides based on the perovskite structure exhibit a surprisingly large diversity in materials properties and are found in many different applications, several related to clean energy technologies, such as solar cells, batteries and fuel cells. Many properties in materials are the result of lattice imperfections, commonly denoted \emph{defects}, and much effort is devoted to fine tuning materials properties through controlling the defects therein. LÄS MER