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 8 of 8 for “"FDF"”.
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Advancing turbulent reacting flow simulations with generalisable machine learning models for sub-grid FDF
… predicting sub-grid filtered density functions (FDFs), aiming to improve accuracy, generalisability, and computational efficiency in turbulent combustion simulations. An artificial neural network (ANN) is first developed and trained using direct numerical simulation (DNS) data from a moderate or …
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Modelling and analysis of nonlinear thermoacoustic systems using frequency and time domain methods
… an extension of the Flame Describing Function (FDF). The FDIDF approximates the flame nonlinear response when it is forced simultaneously with two frequencies, whereas the FDF is limited to one frequency. Although more expensive to obtain, the FDIDF contains more nonlinear information than the …
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The FORS Deep Field Spectroscopic Survey
… redshift catalogue of the FORS Deep Field (FDF). To achieve an optimal reduction of the spectra of these very faint objects special reduction packages were developed. Redshifts and rough spectral types were determined using a library of empirical SEDs derived from FDF mean spectra with very …
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Detection and interpretation of fluorescence signals generated by excitable cells and tissues
… measurements of forward-directed flux (FDF). To this end, we carried out high spatial resolution measurements of forward-directed flux (FDF) in intact and homogenized cardiac tissue, as well as in intralipid-based tissue phantoms. We demonstrated that in the vicinity of the illuminated …
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Führung in der Schweizer Bundesverwaltung: Transformationale und Transaktionale Führung unter Sklerose
… within the Federal Department of Finance (FDF). The empirical study is based on design-oriented research, while the data survey uses a qualitative research method with semi-structured interviews. A quantitative method was used to verify the qualitative findings on leadership style and …
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Design and Control of A Ropeless Elevator with Linear Switched Reluctance Motor Drive Actuation Systems
… control, a novel force distribution function (FDF) is proposed and compared with conventional FDFs. A trapezoidal velocity profile is introduced to control vertical travel position smoothly during the elevator's ascent, descent, and halt operations. Conventional proportional plus integral (PI) …
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DOCSIS 3.1 cable modem and upstream channel simulation in MATLAB
… designing efficient fractional delay filters (FDFs), which are essential in the simulation of micro-reflections. After performing an FPGA implementation cost analysis between various FDF designs, it was determined that a Kaiser-windowed sinc function FDF with roll-off parameter β = 3.88 was the …
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The Role of Swirl in the Flow Structure and Response of Premixed Flames
Gas turbines have an important role in modern engineering and the development of low emission propulsion systems is a multi-dimensional challenge with no single solution. Combustion needs to be optimised and lean premixed combustion is an attractive approach to face this challenge. Unfortunately, …