Sökning: "tecken"
Visar resultat 16 - 20 av 370 avhandlingar innehållade ordet tecken.
16. On LFSR based Stream Ciphers - analysis and design
Sammanfattning : Stream ciphers are cryptographic primitives used to ensure privacy in digital communication. In this thesis we focus on stream ciphers built using Linear Feedback Shift Registers (LFSRs). Several different stream ciphers are analysed and new attacks are presented. In addition, two new stream ciphers are presented, both based on the same design. LÄS MER
17. Screening immigrant mothers for postpartum depression. Development and feasibility of an educational Intervention for nurses in the child health services
Sammanfattning : Postpartum depression is a major public health problem, which immigrant mothers are at particular risk of being affected by. Routine screening is implemented by many countries to increase identification, but research suggests that health care professionals experience screening of immigrant mothers as challenging. LÄS MER
18. Helicobacter pylori and its Association with Gastric and Oesophageal Carcinomas
Sammanfattning : Helicobacter pylori is one of the most common infections in man. The infection is often acquired during childhood and usually results in a chronic life-long inflammation in the gastric mucosa. The aim of our studies was to investigate the association between H. pylori seropositivity and the development of gastric and oesophageal carcinomas. LÄS MER
19. Radiographic assessment of cup migration and wear after hip replacement
Sammanfattning : Methods are needed for accurate measurement of acetabular cup migration and wear after hip replacement. The EBRA (Ein Bild Röntgen Analyse) method was recently introduced as a computerized method for radiographic assessment of acetabular cup migration. LÄS MER
20. Electronic, Transport, and Optical Properties of Broken-Gap Heterostructures
Sammanfattning : This thesis examines the physical properties of broken-gap heterostructures using a multiband k.p model and self-consistent calculations. Broken-gap heterostructures, made from InAs, GaSb, and AlSb, are characterized by a special band alignment with an overlap between the InAs conduction band and the GaSb valence band. LÄS MER