Sökning: "Traditional propagation methods"

Visar resultat 1 - 5 av 31 avhandlingar innehållade orden Traditional propagation methods.

1. 1. Laboratory X-Ray Phase-Contrast Imaging : Methods and Comparisons

   Författare :Tunhe Zhou; Anna Burvall; Hans M. Hertz; Tim Salditt; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; X-ray imaging; Phase-contrast; Liquid-metal-jet source; Propagation-based imaging; Grating-based imaging; Speckle-based imaging; Fysik; Physics;

   Sammanfattning : X-ray phase-contrast imaging has seen rapid development in recent decades due to its superior performance in imaging low-absorption objects, compared to traditional attenuation x-ray imaging. Having higher demand on coherence, x-ray phase-contrast imaging is performed mostly at synchrotrons. LÄS MER

3. 2. Trädgårdsmästarens förökningsmetoder – schema och katalog över förökningsdelar vid vegetativ förökning av fleråriga örtartade växter

   Författare :Tina Westerlund; Göteborgs universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Vegetative plant propagation; Herbaceous perennials; Nursery practice; Traditional propagation methods; Cuttings; Plant parts; Growth habit; Classification; Scheme;

   Sammanfattning : The purpose of this licentiate thesis is to gather and classify information about traditional vegetative propagation of perennial herbaceous plants. This thesis is the first, self-contained part of a survey of propagation methods used by horticulturists. LÄS MER

4. 3. Trädgårdsmästarens förökningsmetoder: dokumentation av hantverkskunskap

   Författare :Tina Westerlund; Göteborgs universitet; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; vegetative plant propagation; perennials; nursery practice; traditional horticultural knowledge; knowledge transfer; documentation methods;

   Sammanfattning : Plant propagation is craft expertise that has been developed within a gardening tradition in which knowledge has primarily been transferred from one practitioner to another by showing and explaining. When the transfer of knowledge in practice wanes, documentation of working methods can provide support for passing on propagation experiences. LÄS MER

5. 4. Multi-scale methods for wave propagation in heterogeneous media

   Författare :Henrik Holst; Bjorn Engquist; Nils Svanstedt; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Numerical analysis; Numerisk analys;

   Sammanfattning : Multi-scale wave propagation problems are computationally costly to    solve by traditional techniques because the smallest scales must be    represented over a domain determined by the largest scales of the    problem.  We have developed new numerical methods for multi-scale wave    propagation in the framework of heterogeneous multi-scale methods. LÄS MER

7. 5. Phase space methods for computing creeping rays

   Författare :Mohammad Motamed; Olof Runborg; Sverker Holmgren; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Creeping Rays; Phase Space Methods; High Frequency Wave Scattering Problems; Numerical analysis; Numerisk analys;

   Sammanfattning : This thesis concerns the numerical simulation of creeping rays and their contribution to high frequency scattering problems. Creeping rays are a type of diffracted rays which are generated at the shadow line of the scatterer and propagate along geodesic paths on the scatterer surface. LÄS MER