Indian Institute of Science / A large number of mathematical models in engineering and physical sciences employ Partial Differential Equations (PDEs). The sheer number of operations required in numerically integrating PDEs in these applications has motivated the search for faster methods of computing. The conventional uniprocessor computers are often unable to fulfill the performance requirements for these computation intensive problems. In this dissertation, a cost-effective message-based multiprocessor system which we call the Broadcast Cube System (BCS) has been proposed for solving important computation intensive problems such as, systems of linear algebraic equations and PDEs. A simulator for performance evaluation of parallel algorithms to be executed on the BCS has been implemented. A strategy (task assignment . algorithm) for assigning program tasks with precedence and communication constraints to the Processing Elements (PEs) in the BCS has been developed and its effectiveness demonstrated. This task assignment algorithm has been shown to produce optimal assignments for PDE problems. Optimal partitioning of the problems, solving systems of linear algebraic equations and PDEs, into tasks and their assignment to the PEs in the BCS have been given. Efficient parallel algorithms for solving these problems on the BCS have been designed. The performance of the parallel algorithms has been evaluated by both analytical and simulation methods. The results indicate that the BCS is highly effective in solving systems of linear algebraic equations and PDEs. The performance of these algorithms on the BCS has also been compared with that of their implementations on popular hypercube machines. The results show that the performance of the BCS is better than that of the hypercubes for linear algebraic equations and compares very well for PDEs, with a modest number of PEs despite the constant PE connectivity of three in the BCS. Finally, the effectiveness of the BCS in solving non-linear PDEs occurring in two important practical problems, (i) heat transfer and fluid flow simulation and (ii) global weather modeling, has been demonstrated.

Bakalauro darbo tikslas sukurti dekoratyvų daugiafunkcinį baldą „KUBAS“. Kūrybiniame procese naudojamos informacijos šaltinių studijos. Nagrinėjama istorinė baldų raida, baldų rūšys, medžiagos naudojamos baldų gamyboje. Kūrybinio darbo idėjos paieškoje naudojant informacijos šaltiniuose pateiktą medžiagą nagrinėjama konceptualių, ekologiškų ir daugiafunkcinių baldų gamyba ir pritaikymas interjere. Išnagrinėjus šią medžiagą pristatoma galutinė gaminio idėja – dekoratyvus daugiafunkcinis baldas „KUBAS“. Įgyvendinant idėją kuriami eskizai, braižomi brėžiniai, gaminamas maketas. Praėjus šiuos kūrybinio darbo etapus, pasirinkus medžiagas ir suplanavus darbo eigą pagaminamas „KUBAS“. Dekoratyvaus daugiafunkcinio baldo kūrybinio darbo proceso patirtis bus pritaikoma technologinio ugdymo procese. / Bachelor's goal to create a decorative multi - functional furniture "Cube". Creative process, sources of information used in studies. Examining the historical development of furniture, furniture types of materials used in furniture manufacturing. Creative ideas for job search information sources using the material at issue in the conceptual, eco - friendly and multi - functional furniture and interior applications. Examination of the material presented in the final product idea - a multifunctional piece of furniture decorated with "Cube". Implementing the idea of creating sketches, drawings are done and made model. After these stages of the creative work, selecting materials and planning of the work produced in the course "Cube". Decorative multi - functional piece of furniture the creative process of working experience will be adapted to technological education.

Parengtas teorinis darbas ir suprojektuota, atlikta kūrybinė kompozicija „Kubo magija“. Darbo tikslas - sukurti erdvinę kompoziciją , naudojant veidrodį. Veidrodis interjerui suteikia žaismingumo, gyvybingumo. Kintant veidrodžio aplinkai kartu kinta ir jo išvaizda. Kūrinys sukurtas, siekiant parodyti, kad meno kūrinys gali keistis. Dažniausiai darbai keičiasi kintant laikui, dėvintis medžiagai, laiko paveiktai konstrukcijai. Šis kūrinys visada keičiasi, kai kinta jo aplinka. Veidrodis darbe naudotas kaip medžiaga, sugerianti ir atspindinti aplinką. Veidrodis magiškas, dėl savo savybių priverčiantis pasitempti, nusišypsoti, sukeliantis kitas įvairias emocijas, kas paveikia žmogų vienokia ar kitokia linkme, turi kažką magiško, paslaptingo. Kubas yra pastovus, statiškas, tad jo forma pakeičiau, suteikiau kitokią formą, nei įprasta kubui. Pakitusi forma suardo kubo pastovumą. Įvedus veidrodį, jis įgauna gyvybę, kitimo, magiškų savybių, iš statiško virsta į dinamišką. Pusiausvyros suardymas, taisyklių pažeidimas, medžiagos, turinčios magiškų savybių įvedimas kūrinį paverčia magišku. Magija tai ne tik burtai, iliuzijos, bet ir visa kita, kas žmogų priverčia elgtis kitaip, jam to nejaučiant. Tad darbą ir pavadinau „Kubo magiją“. Darbe apžvelgiami kompozicijos pagrindai, erdvinė kompozicija, kubas mene ir jo simbolika, aprašoma erdvinės kompozicijos „Kubo magija“ darbo eiga. Pateikiamas baigiamojo darbo ryšys su edukacine veikla. Erdvinė kompozicija “ Kubo magija“ gali... [toliau žr. visą tekstą] / Prepared theoretical work designed and carried out the creative composition “Cube magic”. The purpose of the work was to create a spatial composition using a mirror. The mirror gives a playful and viability for the interior. When the mirror environment is changing, also change its appearance. The work is designed to show that a work of art can vary. Frequently changing work shifts time, wearing the material affected by the construction time. This work is always changing, when its environment is changing. The mirror was used as a material absorbing and reflecting the environment in this work. The mirror is the magic, of his character gets the toes, smile, causing a range of other emotions, which affects a person one or another direction, which has something magical, mysterious. The cube is a constant and static, so I changed its shape in a different format than the usual cube. Destroy the abnormal form of a cube provide a stability. The introduction of the mirror he gets life, change, magical properties, it become dynamic from static. Balancing destruction, violation, materials which have magical properties of the introduction of the work makes it magic. The magic is not only spells, illusions, and everything else what makes a man behave differently, when they do not feel what. So I called work “Cube magic”. There are review the composition framework, the spatial composition, the cube in the art and its symbolism, describe the spatial composition in “Cube magic” workflow in... [to full text]

Αντικείμενο της παρούσας διπλωματικής εργασίας είναι η μελέτη, η ανάλυση και η κατασκευή ενός ρομπότ που επιλύει τον κύβο του Rubik με το κιτ Lego Mindstorms NXT. Το κιτ προγραμματίζεται σε γλώσσα NXC, ενώ συνδέεται με τον υπολογιστή μέσω bluetooth για την επίλυση του κύβου με τον αλγόριθμο του Kociemba. / This diploma dissertation concerns the study, the analysis and the assembly of a robot that solves Rubik’s Cube with the Lego Mindstorms NXT kit. The kit is programmed in NXC, while it can be connected to a computer via bluetooth in order to solve the cube using Kociemba’s algorithm.

A Thesis submitted to The University of Arizona College of Medicine - Phoenix in partial fulfillment of the requirements for the Degree of Doctor of Medicine. / Background and Significance: Spectral Domain-Optical Coherence Tomography (OCT) is one of the most widely used imaging modality in Ophthalmology. It utilizes light waves to visualize the various layers of the retina. The OCT machines offer two different scan patterns, the circular and the cube scan patters. It is important to compare these scan pattern to see if any discrepancy exist in quantifying retinal indices. One of the newer indices is the Bruch’s membrane opening minimum rim width (BMO-MRW), which is the minimum distance between from the BMO to the inner limiting membrane (ILM). The BMO-MRW is being used in the diagnosis of glaucoma. Hypothesis: To compare the cube and radial scan patterns of the SD-OCT for quantifying the BMO-MRW. We hypothesis that there might be some differences between the two scan patterns.

No description available.

No description available.

No description available.

This project's purpose was to understand the workings of a new theorem introduced in a professional paper on the cutwidth of meshes and then use this knowledge to apply it to the search for the cyclic cutwidth of the n-cube.

Hazardous winds, such as tornadoes and hurricanes, have a great impact on civil engineering structures and cause significant social and economic disturbances. The wind speed and pressure tested in the conventional wind tunnel experiments are much smaller than the actual wind speed and pressure measured in the field. Therefore, the Wind-induced Damage Simulator (WDS) was constructed at the University of Ottawa to overcome the wind speed limitations of wind tunnels and to simulate different types of wind speed profiles. WDS is an isolated cubic box with dimensions 3.65m x3.65 m and 3.0 m height, with multiple inlets on the side faces of the testing chamber and an outlet on the top side. This unique equipment creates a controlled environment for studying wind speed profiles in a confined space, by regulating the air flow with the aid of an attached industrial blower. To measure the simulated wind velocities inside the WDS and to obtain the wind speed profile in the testing chamber, Aeroprobe (12- Hole Probe) sensor was used for different combinations of opened inlets and at four different locations. The data collected from the Aeroprobe was processed by the use of the Aeroflow 2.7.5.7346 software, to get the velocity of wind in three different directions (u, v and w) and the mean velocity at a single point. After determining the mean velocity at different heights and RPM values at all four positions, Matlab software was used to determine the wind profile and the spectra of the turbulence intensities and these were compared for different heights at the four investigated locations and for various rotations per minute (RPM) values (400 to 800 RPM) for controlling the blower. Once the flow characterization was completed, the wind-induced pressure for three models of the Silsoe Cube were measured as a part of the second phase of the test. The current experiment employed 3 different scales of Silsoe cube: 1:40, 1:30 and 1:20, while the pressure coefficients were determined at 16 different points along a vertical line crossing the faces of the cube. A pressure taps system with 16 channels and a Scanivale pressure scanner were used to measure the pressure at 16 different positions on the cube. Matlab software was used to determine the pressure coefficients from the data measured by pressure taps. The pressure coefficienst for the Silsoe Cube were plotted and compared for the three different scales. Also, for determining the best scale to be used in future experiments. The pressure coefficients of the 3 different scaled model of Silsoe Cubes was compared with full-scale data reported in the literature for the same structure. Based on the results obtained from the experiments, recommendations for the best location in the testing chamber for the future experiments employing the WDS were formulated.