Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 59 for “"Fpi"”.
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Einfluß von Persönlichkeitsmerkmalen gemessen anhand des Freiburger Persönlichkeitsinventars (FPI) auf postanästhesiologisches Erbrechen
… mit dem Freiburger Persönlichkeitsinventar (FPI) erhoben wurde, einen direkten Einfluß auf PÜ&E hat und welchen Stellenwert ein möglicher Einfluß auf das PÜ&E-Risiko im Kontext der sonstigen Einflußfaktoren hat. Insgesamt konnten 1180 Teilnehmer in die Studie aufgenommenen werden. Im Rahmen …
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Application and simulation of imaging Fabry-Perot interferometers to observe the upper atmosphere
… dynamics. The Fabry-Perot interferometer (FPI) is a spectroscopic instrument which facilitates these measurements by observing the naturally occurring airglow emissions in the thermosphere. This dissertation focuses on the simulation and application of the FPI to study the upper atmosphere. …
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Optical gas sensors based on correlation spectroscopy using a Fabry-Perot interferometer
… spectroscopy with a Fabry-Perot interferometer (FPI). In this technique the spectral FPI transmission fringe pattern is matched with ro-vibrational absorption lines. To produce the cross correlation principle the FPI fringe pattern must be shifted along the frequency axis. Hence as the spectral …
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Using a bistatic Fabry-Perot interferometer system to improve the estimation of thermospheric winds
… two ground-based Fabry-Perot interferometers (FPI) to estimate thermospheric winds. When a single FPI is used, assumptions must be made to obtain meaningful wind data, but there are inherent limitations to the usefulness of the data caused by the use of these assumptions. It must be assumed …
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An analysis of push and pull factors of capital flows in a regional trading bloc
… (FDI) and Foreign Portfolio Investment (FPI) into Sub Saharan Africa (SSA) between 2000 and 2014 remained a minute fraction (at only 2% and 1% respectively) of global inflows. This study seeks to explain this phenomenon by examining the push (global) and pull (domestic) factors that may …
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Investigating the impact of domestic economic dynamics on foreign portfolio investment in Namibia
… dynamics on foreign portfolio investment (FPI) in Namibia for the period 1986-2016. The study used annual and sec ondary data sourced from the Bank of Namibia (BoN), the Namibia Statistic Agency (NSA) and the World Bank. Explanatory variables such as inflation rate, trade openness, lending …
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A needle-tip embedded fibre optical force sensor for tissue identification
… sensor based on the Fabry-Perot Interference (FPI) principle is developed and embedded into the tip of surgical needles. This was designed for tissue identification which it fulfilled via analysing the tip force of the needle during insertion. A novel structure for FPI signal …
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Imaging of volcanic trace gases by Fabry-Perot interferometer correlation spectroscopy
… interferometer correlation spectroscopy (FPI CS) is presented. The technique exploits the periodic transmission profile of a Fabry-Perot interferometer (FPI) and its correlation to the (approximately periodically varying) target trace gas spectral absorbance. The feasibility of the novel …
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CREATING TEST MECHANISMS FOR SILICON SUBSTRATE BASED (SSB) DEVICES FOR USE IN FAR-IR TO MILLIMETER ASTROPHYSICAL SPECTROSCOPY
… technology – the Fabry Perot Interferometer (FPI) for use in EoR-Spec instrument and the Virtually Imaged Phase Array (VIPA) spectrograph for use in the POEMM (Planetary Origins and Evolution Multispectral Monochromator) instrument. This paper is divided into three chapters: Chapter I, ‘The …
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INVESTIGATIONS INTO THE EFFECTS OF ELECTRICAL STIMULATION OF THE VAGUS NERVE ON NOREPINEPHRINE IN THE CORTEX AND HIPPOCAMPUS OF EXPERIMENTALLY BRAIN INJURED AND UNINJURED RATS
… bilaterally. Insult to the CNS by means of FPI resulted in long lasting depression of extracellular NE concentrations in the cortex of the injured controls and 1.0 mA VNS group that was partially attenuated 1.0 mA VNS. In the 0.5 mA VNS group NE concentrations remained above pre-injury …
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Iterative learning control for improved tracking of fluid percussion injury device
… such TBI events. Lateral Fluid Percussion (FPI) brain injury is one of the most commonly used and well-characterized experimental models of TBI. A Fluid Percussion Injury (FPI) device in the laboratory is used to replicate the injury but does not execute the desired pressure profile. The …
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A Mixed Methods Comparison of the First Principles of Instruction in Flipped and Face-to-Face Technology Integration Courses
… impact of the First Principles of Instruction (FPI) model when applied to face-to-face (F2F) and flipped technology integration courses. Through this investigation, I demonstrate how the FPI inform the design of problem-centered environments, their impact on participants’ technological, …
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Spatial variation of the food price index in Canada's Northwest Territories: a ridge regression analysis
… spatial variation in the 1985 Food Price Index (FPI) at destinations in the Northwest Territories (NWT). It follows a conceptual model that assumes the FPI varies directly with the accessibility of a given northern destination to the metropolitan South. Accessibility has been defined in many ways …
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Modeling and Signal Processing of Low-Finesse Fabry-Perot Interferometric Fiber Optic Sensors
… fiber optic Fabry-Perot Interferometric (FPI) sensors. The work is divided into two levels: modeling of the sensors, and signal processing based on White-Light-Interferometry (WLI). In the first chapter, the technical background of the low-finesse FPI sensor is briefly reviewed and the …
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Interaction effects in quantum interferometers
… Quantum Hall Fabry-Pérot interferometers (FPI) have attracted increasing attention due to their ability to probe such exotic physics. In addition, such interferometers are affected by electron interactions themselves in unexpected ways. For example, experimental evidence for …
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THE RELATIONSHIP BETWEEN SELF-REPORT AND PERFORMANCE-BASED MEASURES OF PHYSICAL FUNCTION FOLLOWING AN INTENSIVE CARE UNIT STAY
… Functional Performance Inventory-Short Form (FPI-SF)) as well as performance-based (Short Physical Performance Battery (SPPB), skeletal muscle strength) measures were taken at hospital discharge, 2, 4, and 6 months post-enrollment. Partial correlations between self-report and performance-based …
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A Remote Observatory for Geocoronal Hydrogen Emissions
… is designed to use Fabry-Perot interferometer (FPI) to study the faint Balmer series emissions of the terrestrial upper thermosphere and exosphere, collectively known as the geocorona. This instrumentation is designed to be deployable to a clear-air site, necessitating remote operations of the …
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Trace gas imaging in the atmosphere with a Fabry-Pérot interferometer - a case study for sulfur dioxide
… employing a Fabry-Pérot interferometer (FPI) is introduced. In order to identify and quantify a trace gas species, the FPI's transmittance spectrum is matched to the molecule's absorption structures. The method was investigated for sulfur dioxide (SO2) in a model study. Moreover, a one …
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Three-dimensional wind measurements and modeling using a bi-static Fabry-Perot interferometer system in Brazil
… is equipped with a Fabry-Perot interferometer (FPI) to measure neutral wind velocities and neutral temperatures using observations of the 630.0-nm emission caused by the dissociative recombination of O2+. The FPI systems can operate in two different modes: cardinal and common volume (CV). In …
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Fiber Optic Sensors for Liquid Identifications
<p>"The fiber optic Fabry-Perot interferometer (FPI) is a widely utilized sensing configuration, offering numerous advantages over conventional electronic sensors, including high accuracy, distributed sensing capabilities, immunity to electromagnetic interference, and compact size. In this study, …
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