Sökning: "Biologically-Based Models"

Hittade 4 avhandlingar innehållade orden Biologically-Based Models.

1. 1. Biologically-Based Interactive Neural Network Models for Visual Attention and Object Recognition

   Författare :Mohammad Saifullah; Arne Jönsson; Christian Balkenius; Anders Lansner; Linköpings universitet; []
   Nyckelord :Biologically-Based Models; Object Recognition; Visual Attention; Interactive Neural Network; Occlusion; Overlapping;

   Sammanfattning : The main focus of this thesis is to develop biologically-based computational models for object recognition. A series of models for attention and object recognition were developed in the order of increasing functionality and complexity. LÄS MER

3. 2. Liver tumour promoting effects by polychlorinated biphenyls

   Författare :Marie Haag Grönlund; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :tumour promotion; altered hepatic foci; rat liver; PCB; potency; TEF; interactions; antagonism; biologically based cancer growth models; TCDD;

   Sammanfattning : PCBs cause a number of toxic effects and are present in a variety of biological samples including fish, meat and diary products. Cancer is a serious toxic effect by PCBs that has been observed in animal experiments but the knowledge about PCB induced carcinogenicity is still scarce. LÄS MER

4. 3. Determination and use of radiobiological response parameters in radiation therapy optimization

   Författare :Panayiotis Mavroidis; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Radiotherapy optimization; tumour control; normal tissue complications; radiobiological treatment planning; biological models; dose-response parameters;

   Sammanfattning : Optimization of radiation therapy is critically dependent on the use of patient related information. For this reason, radiobiological models describing the dependence of tumour and normal tissue responses on the irradiated volume and the dose-time-fractionation schedule should be introduced. LÄS MER

5. 4. Biological optimization of angle of incidence and intensity modulation in breast and cervix cancer radiation therapy

   Författare :Brigida Costa Ferreira; Anders Brahme; Roger Svensson; Ion Christian Chiricuta; Stockholms universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; biological treatment planning; angle of incidence optimization; intensity modulation; breast and cervix cancer; Radiation biology; Strålningsbiologi;

   Sammanfattning : Biological treatment optimization aim at improving radiation therapy by accounting for the radiobiological tumour and normal tissues response properties when optimizing the dose delivery. Generally traditional methods, using only dosimetrical measures, disregard the nonlinear radiation response of different tumours and normal tissues. LÄS MER