Sökning: "V Q"

Visar resultat 11 - 15 av 92 avhandlingar innehållade orden V Q.

1. 11. Pulmonary ventilation and perfusion assessed by electrical impedance tomography - Experimental studies in pigs

   Författare :Anneli Fagerberg; Göteborgs universitet; []
   Nyckelord :electrical impedance tomography; V Q matching; pig; endotoxinaemic ALI; ACE inhibitor;

   Sammanfattning : Pulmonary ventilation and perfusion and ventilation/perfusion (V/Q) matching determine gas exchange in every lung unit in the healthy state and in the pathologically altered lung. Mismatch of V and Q lead to hypoxaemia and hypercapnia and monitoring of V/Q relations are thus important in critical illness. LÄS MER

3. 12. Topics in multifractal measures, nonparametrics and biostatistics

   Författare :Attila Frigyesi; Anestesiologi och intensivvård; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; confidence interval; mixed effects; Statistics; operations research; programming; actuarial mathematics; Statistik; operationsanalys; programmering; aktuariematematik; operational model of pharmacological agonism; concentration-response curves; dose-response curves; ventilation perfusion scintigraphy; V Q-scan; pulmonary embolism; automated method; box counting; correlation dimension; Hentschel-Procaccia dimension; Rényi dimension; generalized dimensions; fractal dimension estimation; dimension spectrum; multifractal measures; kernel density estimates; absolute continuity; singular distribution functions;

   Sammanfattning : This thesis consists of four papers. The first two papers, which comprise the main part of the thesis, deal with an unexpected connection between kernel density estimators and dimension spectra for multifractal measures. LÄS MER

4. 13. PSYCHO-PEDAGOGICAL WORK AMONG INDIVIDUALS WITH AUTISM SPECTRUM DISORDERS IN COMMUNITY-BASED ACCOMMODATION. Development and psychometric testing of the Environmental Rating Scale Questionnaire (ERS-Q) for assessment of residential programmes

   Författare :Marie Hübel; Institutionen för hälsovetenskaper; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Reliability; Pedagogical strategies; Collaboration; Staff; Community-based accommodation; Quality of Life; Pedagogical work; Validity; Psychometric measurement; Assessment; Environmental Rating Scale ERS ; ERS-Q; TEACCH; Autism Spectrum Disorders;

   Sammanfattning : The increased prevalence of individuals with Autism Spectrum Disorders (ASD) challenges society to evaluate the quality and efficacy of community based psycho-pedagogical programmes in order to achieve progress and to attain an acceptable level of quality of life for its citizens. The overarching aim of this thesis was to gain knowledge about staff’s pedagogical work and to provide a method for assessment of the quality of residential programmes for individuals with ASD in community-based accommodation. LÄS MER

5. 14. Millimeter-wave Transceiver ICs for Ultrahigh Data Rate Communications Using Advanced III-V and Silicon Technologies

   Författare :Sona Carpenter; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; D-band; frequency multiplier; 110-170 GHz; QPSK; demodulator; I Q modulator; transmitter; high-order modulation; receiver; high data rate; single chip; SiGe BiCMOS; QAM; InP DHBT; direct conversion; Gilbert-cell mixer; millimeter-wave communication; 5G; MMIC; point-to-point radio.;

   Sammanfattning : Today’s main driving parameter for radio transceiver research is the ability to provide high capacity while maintaining low cost, small form factor, and low power consumption. Direct conversion architectures (due to the feasibility of monolithic integration) at millimeter-wave (due to wideband availability) have attracted large interest in recent years because of their potential to meet these demands. LÄS MER

7. 15. Development of Novel Diffusion NMR Methods : Preclinical Applications in Colloidal Model Systems

   Författare :Stefanie Eriksson; Fysikalisk kemi; []
   Nyckelord :diffusion NMR; diffusion tensor; Microscopic anisotropy; q-MAS; exchange; liquid crystals; yeast cell suspensions;

   Sammanfattning : NMR is a powerful non-invasive technique utilizing radiofrequency and gradient pulses to manipulate the spinsof atomic nuclei. In particular, diffusion NMR uses strong magnetic field gradients to label the positions of spins allowing for the measurement of translational motion of molecules in liquids. LÄS MER