Search for dissertations about: "early active"

Showing result 1 - 5 of 638 swedish dissertations containing the words early active.

  2. 1. Active Transmitter Antenna Array Modeling for MIMO Applications

    Author : Parastoo Taghikhani; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; beam steering; Active antenna array; active impedance; hybrid beamforming transmitter; MIMO transmitter; far-field nonlinear distortion; millimeter wave; modeling.;

    Abstract : The rapid growth of data traffic in mobile communications has attracted interests to the Multiple-Input-Multiple-Output (MIMO) communication systems at millimeter-wave (mmWave) frequencies.  MIMO systems exploit active transmitter antenna arrays for higher energy efficiency and providing beamforming flexibility. READ MORE

  4. 2. Surveillance and follow-up of early prostate cancer

    Author : Mats Steinholtz Ahlberg; Anna Bill-Axelson; Lars Holmberg; Anna Lantz; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; prostate cancer; active surveillance; follow-up; biochemical recurrence; triggers for transition to radical treatment; overdiagnosis; overtreatment.; Urologi; Urology;

    Abstract : Active surveillance (AS) for prostate cancer was introduced to address overtreatment resulting from prostate-specific antigen (PSA) testing. Despite advancements such as Magnetic Resonance Imaging (MRI) and targeted biopsies, PSA remains crucial in prostate cancer diagnostics, leading to ongoing challenges of overdiagnosis and overtreatment. READ MORE

  5. 3. Parallel design optimization of multi-trailer articulated heavy vehicles with active safety systems

    Author : Manjurul Islam; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Active safety systems; Active trailer steering; Multi-trailer articulated heavy vehicles; High performance computing; Design optimization;

    Abstract : Multi-trailer articulated heavy vehicles (MTAHVs) exhibit unstable motion modes at high speeds, including jack-knifing, trailer swing, and roll-over. These unstable motion modes may lead to fatal accidents. On the other hand, these vehicle combinations have poor maneuverability at low speeds. READ MORE

  6. 4. Multi frequency interferometer studies of active and starburst galaxies

    Author : Evert Olsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; galaxies: active; galaxies: ISM; galaxies: starburst; galaxies: evolution;

    Abstract : We report the results of a multi-frequency study of three interactinggalaxies: NGC 5218, NGC 1614 and NGC 4194 (the Medusa merger). These sourcesbelong to different classes of active and starburst galaxies. READ MORE

  7. 5. Kinematics and laxity in the knee, before and after Anterior Cruciate Ligament reconstruction. Evaluation using dynamic and static radiostereometric analysis

    Author : Jonas Isberg; Göteborgs universitet; []
    Keywords : ACL; KT-1000; early reconstruction; early extension; kinematics; laxity; RSA;

    Abstract : Introduction: Whether full active and passive extension training, started immediately after an Anterior Cruciate Ligament (ACL) reconstruction, will increase the post-operative A-P laxity of the knee has been the subject of discussion. For many years, many protocols have included full extension with full weight bearing after an ACL reconstruction. READ MORE