Search for dissertations about: "standard deviation"

Showing result 6 - 10 of 196 swedish dissertations containing the words standard deviation.

  2. 6. Fabry-Pérot based refractometry : development of a transportable refractometer for assessment of gas pressure

    Author : Clayton Forssén; Ove Axner; Isak Silander; Martin Zelan; Leslie Pendrill; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; fabry-pérot; refractometry; optical resonator; transportable; pressure standard; gamor; pressure; metrology; ring comparison; si; pascal; quantumpascal; fysik; Physics;

    Abstract : A unified description of physical phenomena through measurement science is one of the foundational pillars in a global society. The International System of Units (SI) is the most widely used system of units and since its redefinition in 2019, all units encompassed by it are based on fundamental physical constants. READ MORE

  4. 7. Myocardial Perfusion and Function: Comparative assessment by ECG, SPECT and MRI

    Author : Eva Persson; Lund Klinisk fysiologi; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; tomografi; medicinsk instrumentering; Physiology; radiologi; radiology; tomography; medical instrumentation; Klinisk fysiologi; Clinical physics; ST-segment deviation ; myocardial ischemia ; myocardial perfusion ; MRI; CMR; MPS; ECG; SPECT; Fysiologi; Cardiovascular system; myocardial function ; Kardiovaskulära systemet;

    Abstract : Evaluation of myocardial perfusion and function is important in management of patients with suspected or known coronary artery disease. This thesis focuses on the use of common diagnostic methods, myocardial perfusion single-photon emission computed tomography (MPS) and electrocardiography (ECG), to enhance and validate the diagnostic information. READ MORE

  5. 8. Limited Feedback Information in Wireless Communications : Transmission Schemes and Performance Bounds

    Author : Thanh Tùng Kim; Mikael Skoglund; Hesham El Gamal; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Diversity-multiplexing tradeoff; Large deviation analysis; Limited feedback; MIMO channels; Relay channels; Telecommunication; Telekommunikation;

    Abstract : This thesis studies some fundamental aspects of wireless systems with partial channel state information at the transmitter (CSIT), with a special emphasis on the high signal-to-noise ratio (SNR) regime. The first contribution is a study on multi-layer variable-rate communication systems with quantized feedback, where the expected rate is chosen as the performance measure. READ MORE

  6. 9. Creating clarity and managing complexity through co-operation and communication : The case of Swedish icebreaker operations

    Author : Magnus Boström; Jesper Andreasson; Cecilia Österman; Carl Hult; Johan Karltun; Linnéuniversitetet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; maritime safety; organization; human factors; closed-loop communication; Standard Marine Communication Phrases; misunderstanding; other-initiated repair; Sjöfartsvetenskap; Maritime Science;

    Abstract : Sea transportation is vital for the global economy, and the amount of seaborne trade is expected to increase in the future. In some areas, icebreakers are necessary for maintaining open shipping lanes all-year round and ensuring safe navigation. READ MORE

  7. 10. Large deviations for weighted empirical measures and processes arising in importance sampling

    Author : Pierre Nyquist; Henrik Hult; Ingemar Kaj; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : This thesis consists of two papers related to large deviation results associated with importance sampling algorithms. As the need for efficient computational methods increases, so does the need for theoretical analysis of simulation algorithms. This thesis is mainly concerned with algorithms using importance sampling. READ MORE