Avancerad sökning
Visar resultat 1 - 5 av 114 avhandlingar som matchar ovanstående sökkriterier.
1. Antenna array mapping for DOA estimation in radio signal reconnaissance
Sammanfattning : To counter radio signal reconnaissance, an efficient way of covert communication is to use subsecond duration burst transmissions in the congested HF band. Against this background, the present thesis treats fast direction finding (DF) using antenna arrays with known response only in a few calibration directions. LÄS MER
2. Applied Array-Filter Design : Methods and Applications
Sammanfattning : .... LÄS MER
3. Genetic and epigenetic characterization of pediatric high hyperdiploid acute lymphoblastic leukemia
Sammanfattning : The aim of this thesis was to analyze the genetic and epigenetic characteristics of pediatric high hyperdiploid acute lymphoblastic leukemia (HeH ALL), the most common type of childhood malignancy. The three original articles presented in this thesis have addressed three major questions regarding HeH ALL: what are the genetic characteristics of the most common structural abnormality – dup(1q)? Are aberrant methylation patterns involved in leukemogenesis? How do diagnostic and relapse samples relate to each other genetically? In article I we found that the proximal breakpoints of dup(1q)-positive Burkitt lymphomas (BL) and pediatric HeH ALLs cluster close to the centromere, suggesting this region to be breakprone, and that five genes on 1q were significantly overexpressed and thus potentially pathogenetically important. LÄS MER
4. Signal Processing for Radar with Array Antennas and for Radar with Micro-Doppler Measurements
Sammanfattning : Radar (RAdio Detection And Ranging) uses radio waves to detect the presence of a target and measure its position and other properties. This sensor has found many civilian and military applications due to advantages such as possible large surveillance areas and operation day and night and in all weather. LÄS MER
5. Radiation from planar antennas in the presence of layered dielectric media
Sammanfattning : .... LÄS MER