A partially parallel reconfigurable channel switch is constructed for use in DFBR. Its permutation can be changed while running without any interruption in the streams of data. Three approaches are tried: one based on asorting network, one based on memories and multiplexers and one based on a Clos network. Variants with the pattern stored in memories and in shift registers are tried. They are implemented in automatically generated Verilog and synthesized for an FPGA. Their cost in terms of area use, memory use and maximum clock frequency is compared and the results show that the Clos based approach is superior in all aspects and that pattern data should not be saved in shift registers. The work is open source and available for download at https://github.com/channelswitch/channelswitch. / En delvis parallel och delvis seriell kanalswitch för användning inom DFBR skapas. Dess permutation kan ändras medan den kör utan avbrott i dataströmmen. Tre alternativ undersöks: ett baserat ett sorteringsnätverk, ett baserat på minnen och multiplexrar och ett som baseras på Clos-nätverk. Versioner med mönsterdata sparad i skiftregister och i minnen prövas. De implementeras i automatiskt genererad Verilog och synthesiseras för en FPGA. Deras kostnad i areaanvändning, minnesanvändning och maximal klockfrekvens jämförs. Resultaten visar i princip att Clos-nätverken är bäst i alla avseenden och att mönsterdata ska sparas i RAM-minnen och inte i skiftregister. Arbetet är open source och kan laddas ner från https://github.com/channelswitch/channelswitch.

Breaking Rayleigh’s "curse" and resolving infinitely small spatial separations is one motivation for developing super-resolution in imaging systems. It has been shown that an arbitrarily small distance between two incoherent point sources can be resolved through the use of a spatial mode sorter, by treating it as a parameter estimation problem. However, when extending this method to general objects with many point sources, the added complexity of multi-parameter estimation problems makes resolution of general objects quite challenging. In the first part of this thesis, we propose a new approach to deal with this problem by generalizing the Richardson-Lucy (RL) deconvolution algorithm to accept the outputs from a mode sorter. We simulate the application of this algorithm to an incoherent confocal microscope using a Zernike spatial mode sorter rather than the conventional pinhole. Our method can resolve general scenes with arbitrary geometry. For such spatially incoherent objects, we find that the resolution enhancement of the sorter-based microscopy using the generalized RL algorithm is over 30% higher than the conventional confocal approach using the standard RL algorithm. This method is quite simple and potentially can be used for various applications including fluorescence microscopy. It could also be combined with other super-resolution techniques for enhanced results. The second part of this thesis explores the potential for the Herriott cell to be used as an image-preserving delay line. In quantum imaging, entangled photons are often utilized to take advantage of their spatial and temporal correlations. One photon (“the signal”) interacts with the system to be measured and the other (“the herald”) is used to trigger the detection of the signal. However, for a typical high-sensitivity camera, there is a delay on the order of 20 ns between the trigger and the sensor becoming active allowing for the signal to be recorded. An image-preserving delay line (IPDL) serves to store a photon without distorting the spatial structure and losing the spatial and temporal correlations. It is commonly made with a series of 4f systems to repeatedly image the light field. We propose to use the Herriott cell as an image-preserving delay line. We tested 10 of the lower-order HG modes and found it was able to preserve almost all of them with high fidelities (>90%), with the only exceptions being the largest modes (HG03 and HG30) at the longest delay (7.9 m) where the fidelity was still >86%. In addition to these modes, it was also able to store general images. This application of the Herriott cell affords insights into miniaturizing IPDLs, which tend to occupy a significant amount of space. Overall, these two projects offer novel insight and application to the world of quantum imaging.

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This writer reviews some of the most influential factors found in studies of adult childparent relationships, including divorce, surrogate parents, coresidency, caregiving, proximity, family size, and gender. Focusing on the "feminine tilt" in family relationships, research reveals explanations such as caregiving, kinkeeping, and gender identity issues. The author proposes the possibility that the female bias in parent-child relationships has more to do with subjective thought process than biological sex. An analysis was conducted on mailed-in-surveys for 264 Kentucky adults, ages 30 to 49, who completed questions pertaining to their communication and closeness with their parents, and one fourth of the Keirsey Temperament Sorter regarding decision making preferences. The study found Feelers communicate significantly more with, and feel significantly closer to, parents than do Thinkers. Feeling daughters have more communication and greater closeness with parents than Thinking daughters. Feeling sons report more closeness with mothers than Thinking sons, and more communication and greater closeness to fathers than Thinking daughters. Daughters report more communication and closeness with mothers than sons. Suggestions for future research include using a much larger sample of strong temperament typed respondents.

Disputats. Rheinische Friedrick-Wilhelms-Universität, 2001. / Haves kun i elektronisk udg.

Diploma thesis deals with design of semimobile device for sorting sand and describes design of machine parts. This thesis includes checking calculations of selected structural elements and final verification of calculations and measurements.

Disputats. Universität Hohenheim, 2004. / Haves kun i elektronisk udg.

This essay investigates Haukioja's (2010) notion of actuality-dependence. This notion is an attempt to explain the rigid behaviour of some kind terms; in particular natural kind terms like “water” and “tiger”. A definition of rigidity for kind terms has to take in account speakers' semantic intentions. This, together with the fact that actuality-dependence can only be applied successfully to a kind term if the members of its extension all share an underlying, non-trivial property, makes the notion of actuality-dependence face the problem of reference failures. A speaker's intention for a certain term to be actuality-dependent might fail, in the sense that the members of the kind picked out by the term in question lack underlying properties of the right sort. Three ways to solve this issue are shown to be unsatisfactory, ultimately leading to the conclusion that actuality-dependence cannot be the semantic feature that single out natural kind terms as semantically special.

Korean coals are typically high rank anthracite characterized by high ash content and difficult cleaning characteristics. The main objective of the study was to evaluate the feasibility of treating various size fractions within the coal using an assortment of physical coal cleaning technologies. Dry cleaning is preferred due to the friability of the coal. As such, three pneumatic processes were tested including Ore Sorting for the plus 10 mm material, Air Table Separation for 10 x 1 mm fraction and Tribo-electric Separator for - 1 mm fraction. The Dense Medium Cyclone is known to be one of the most efficient separation processes and thus was evaluated for the cleaning of 10 x 1 mm coal. To realize the optimum performances from the Air Table and Rotary Tribo-electric Separator, their operational variables were systematically studied using a parametric experimental design. In addition, the dense medium cyclone and X-ray Transmission Sorting trials were performed under various medium densities and separation settings, respectively. A comparison of the cleaning performance revealed that the Dense Medium Cyclone and X-ray Transmission Sorting proved to provide the most effective results with maximum ash rejection and combustible recovery. The tribo-electric separation process was ineffective while the air table provided modest ash reduction potential.