DONG, KE. Advanced Design Techniques in Linear Parameter Varying Control. (Under the direction of Associate Professor Fen Wu). To improve the analysis and control synthesis approach of linear fractional transformation (LFT) parameter-dependent systems, two types of non-quadratic Lyapunov function and switching control scheme are introduced and studied in this thesis. A gain-scheduled controller...

We discuss the occurrence of oscillations when using central schemes of the Lax-Friedrichs type (LFt), Rusanov’s method and the staggered and non-staggered second order Nessyahu-Tadmor (NT) schemes. Although these schemes are monotone or TVD, respectively, oscillations may be introduced at local data extrema. The dependence of oscillatory properties on the numerical viscosity coefficient is inv...

We measured the vibration of a prototype superconducting magnetic bearing (SMB) operating at liquid nitrogen temperature. This system was designed as breadboard model for LiteBIRD low-frequency telescope (LFT) polarization modulator unit. set an upper limit amplitude 36 $$\mu m$$ rotational synchronous frequency. During rotation, field produced varies. From this setup, we compute static and AC ...

Abstract This work presents a new approach to design and validate an economical lightweight multi-material roof-integrated vehicle door concept made of long-fiber thermoplastics (LFT) metals with the consideration package constrain, critical static crash loading cases. A novel “two-ring” structure is introduced, which consists major load-bearing region minor but highly function-integrated regio...

In the LFT approach to Exact Real Arithmetic, we study the question how many argument digits are needed to produce a certain number of result digits. We present upper and lower bounds for many simple functions and operations, and for exponential and square root.

BACKGROUND The Human Immunodeficiency Virus (HIV) and the Tuberculosis (TB) co infection are contributory to each other in causing a progressive decline in the cell mediated immunity and a damage to the hepatobiliary system. The aim of our study was to estimate the extent of liver damage which was caused by these infections before the start of the therapy with hepatotoxic drugs like Antiretrovi...

OBJECTIVE We describe baseline characteristics, time to treatment initiation and interim patient outcomes at a decentralized, outpatient treatment site for rifampicin-resistant TB (RR-TB). METHODS Prospective observational cohort study of RR-TB patients from March 2013 until December 2014. Study subjects were followed until completion of the intensive phase of treatment (6 months), transfer o...

This study examined the role of metabotropic glutamate receptors (mGluRs) in hippocampal long-term depression (LTD) in vivo. The group 1 mGluR antagonist (S)4-carboxyphenylglycine (4CPG), group 1/2 antagonist (RS)-alpha-methyl-4-carboxyphenylglycine (MCPG), and group 2 antagonists (RS)-alpha-methylserine-O-phos-phate monophenyl ester (MSOPPE) and (2S)-alpha-ethylglutamic acid (EGLU) were used. ...

BACKGROUND Aortic arch anomalies (AAA) are rare cardio-vascular anomalies. Right-sided and double-sided aortic arch anomalies (RAAA, DAAA) are distinguished, both may cause airway obstructions. We studied the degree of airway obstruction in infants with AAA by neonatal lung function testing (LFT). PATIENTS AND METHODS 17 patients (10 RAAA and 7 DAAA) with prenatal diagnosis of AAA were invest...

Between 8th July 2002 and 18th June 2004, aerosol samples were collected in Azores. Their inorganic composition was obtained by neutron activation analysis in order to study the differences of aerosols in two atmospheric altitudes of the central north Atlantic: (1) PICONARE observatory (Lower Free Troposphere-LFT) at Pico mountain summit (38,4708N, 28,4048W, 2,225 m a.s.l.) in Pico Island, Azor...