Este trabalho tem por objetivo desenvolver ferramentas que permitam gerar em fones-de-ouvido o efeito psicoacústico de fontes sonoras locomovendo-se no espaço, por meio da auralização do sinal monofônico original. Embora a auralização binaural possa ser feita empregando variações de atraso (chamadas ITD interaural time difference, ou diferença de tempo interaural) e de intensidade (chamadas ILD interaural level difference, ou diferença de nível interaural) entre os canais, melhores resultados psicoacústicos podem ser obtidos ao se utilizar filtros digitais conhecidos como HRTFs (head related transfer functions, ou funções de transferência relativas à cabeça). Uma HRTF insere no sinal monofônico informações que possibilitam ao sistema auditivo identificá-lo como proveniente de uma direção específica, direção esta que é única para cada HRTF. Para posicionar uma fonte estática em uma direção específica, bastaria, então, filtrar o sinal original pela HRTF da direção desejada. Se, no entanto, for desejável que a fonte se locomova em uma trajetória contínua, um número infinitamente grande de filtros seria necessário. Como eles são, normalmente, obtidos empiricamente, um número arbitrariamente alto deles não está disponível. Disso surge a necessidade de técnicas de interpolação de HRTFs, que possibilitem gerar os filtros intermediários não disponíveis. Este trabalho apresenta três novas técnicas de interpolação de HRTFs, para assim alcançar o objetivo de auralizar fontes sonoras móveis: a interpolação triangular, que é uma técnica de interpolação linear baseada na técnica de panorama sonoro VBAP (vector-based amplitude panning, ou panorama sonoro baseado em vetores); o método das movimentações discretas, que busca explorar o limiar de percepção do nosso sistema auditivo para, com isso, gerar uma técnica extremamente barata computacionalmente; e a interpolação espectral, que altera continuamente as estruturas das HRTFs para gerar filtros interpolados. São apresentadas também as implementações feitas dessas novas técnicas desenvolvidas, bem como os testes numéricos realizados para medir sua eficácia. / The goal of this work is the development of tools that allow simulating through headphones the psychoacoustic effect of sound sources moving in space, by the auralisation of the original monophonic signals. Although binaural auralisation can be implemented using variations in delays (called ITD interaural time difference) and in intensities (called ILD interaural level difference) among channels, better psychoacoustic results can be achieved using digital filters known as HRTFs (head related transfer functions). A HRTF inserts in the monophonic signal information that allow the auditory system to perceive this signal to be as if coming from a specific direction, which is unique for each single HRTF. Thus, to position a static sound source at a specific direction, filtering the original signal with the HRTF from the desired direction would be enough. Nevertheless, if it is desired that the sound source moves in a continuous trajectory, an infinitely large amount of filters would be necessary. Since they are usually obtained by measurements, such an arbitrarily large amount of them is not available. In this case, HRTF interpolation techniques that generate intermediary filters must be used. This work presents three new HRTF interpolation techniques in order to auralise moving sound sources: the triangular interpolation, a linear interpolation technique based on the VBAP amplitude panning technique; the discrete movements method, an extremely efficient technique that exploits the auditory systems limitations in perceiving very small changes in direction; and the spectral interpolation, that alters continuously the structures of the HRTFs to generate interpolated filters. Implementations of these techniques are discussed and numerical tests are also presented.

Moving objects database systems are the most challenging sub-category among Spatio-Temporal database systems. A database system that updates in real-time the location information of GPS-equipped moving vehicles has to meet even stricter requirements. Currently existing data storage models and indexing mechanisms work well only when the number of moving objects in the system is relatively small. This dissertation research aimed at the real-time tracking and history retrieval of massive numbers of vehicles moving on road networks. A total solution has been provided for the real-time update of the vehicles’ location and motion information, range queries on current and history data, and prediction of vehicles’ movement in the near future. To achieve these goals, a new approach called Segmented Time Associated to Partitioned Space (STAPS) was first proposed in this dissertation for building and manipulating the indexing structures for moving objects databases. Applying the STAPS approach, an indexing structure of associating a time interval tree to each road segment was developed for real-time database systems of vehicles moving on road networks. The indexing structure uses affordable storage to support real-time data updates and efficient query processing. The data update and query processing performance it provides is consistent without restrictions such as a time window or assuming linear moving trajectories. An application system design based on distributed system architecture with centralized organization was developed to maximally support the proposed data and indexing structures. The suggested system architecture is highly scalable and flexible. Finally, based on a real-world application model of vehicles moving in region-wide, main issues on the implementation of such a system were addressed.

Numerical simulations are presented for three dimensional viscous incompressible free shear flows. The numerical method is based on solving the vorticity equation using Vortex-In-Cell method. In this method, the vorticity field is discretized into a finite set of Lagrangian elements (particles) and the computational domain is covered by Eulerian mesh. Velocity field is computed on the mesh by solving Poisson equation. The solution proceeds in time by advecting the particles with the flow. Second order Adam-Bashford method is used for time integration. Exchange of information between Lagrangian particles and Eulerian grid is carried out using the M’4 interpolation scheme. The classical inviscid scheme is enhanced to account for stretching and viscous effects. For that matter, two schemes are used. The first one used periodic remeshing of the vortex particles along with fourth order finite difference approximation for the partial derivatives of the stretching and viscous terms. In the second scheme, derivatives are approximated by least squares polynomial. The novelty of this work is signified by using the moving least squares technique within the framework of the Vortex-in-Cell method and implementing it to a three dimensional temporal mixing layer. Comparisons of the mean flow and velocity statistics are made with experimental studies. The results confirm the validity of the present schemes. Both schemes also demonstrate capability to qualitatively capture significant flow scales, and allow gaining physical insight as to the development of instabilities and the formation of three dimensional vortex structures. The two schemes show acceptable low numerical diffusion as well.

This thesis challenges common assumptions of trans moving images by applying theories of identification to an autoethnographic close reading of three specific texts – Hedwig and The Angry Inch (John Cameron Mitchell, 2001), Dallas Buyers Club (Jean- Marc Vallée, 2013) and Transparent (Jill Soloway, 2014) - considered by both mainstream and queer audiences to feature transgender characters and experiences. This thesis, while limited to the author’s experience as a trans woman, attempts to advance the argument that identification with trans moving images may change with one’s transition and require a reassessing of “what is trans” along with resituating the trans spectator from “object of the gaze” to “bearer of the look” (Mulvey, 1975).

The purpose of this diploma thesis is a testing of utilization of the indicators for technical analysis on selected equities from SPAD. The main aim of this thesis is to answer whether the trading based on the indicators of technical analysis could be profitable particularly for an ordinary investor in the time of the financial crises. For this purpose there were used equity rates for ČEZ, Komerční banka, Philip Morris ČR and Telefónica O2C.R.. Analyzed period is divided into two parts. Parameters of the indicators are tested in the first period from 2002 to 2006 and the calculated optimized parameters are used in the second period from 2002 to March of 2009.

Identifying marine pollutant sources is essential in order to assess, contain and minimize their risk. We propose a Lagrangian Particle Tracking algorithm (LPT) to study the transport of passive tracers continuously released from fixed and moving sources and to identify their source in a backward mode. The LPT is designed to operate with uncertain flow fi elds, described by an ensemble of realizations of the sea currents. Starting from a region of high probability, re- verse tracking is used to generate inverse maps. A probability-weighted distance between the resulting inverse maps and the source trajectory is then minimized to identify the likely source of pollution. We conduct realistic simulations to demonstrate the efficiency of the proposed algorithm in the Mediterranean Sea using ocean data available from Copernicus Marine Environment Monitoring Services. Passive tracers are released along the path of a ship and propagated with an ensemble of flow fi elds forward in time to generate a probability map, which is then used for the inverse problem of source identi fication. Our experiments suggest that the algorithm is able to efficiently capture the release time and source, with some test cases successfully pinpointing the release time and source up to two weeks back in time.

The camera, as a creature, wanders through space, takes action. We feel tense, every moment of time. In everything. Dance of particles, screaming in unreal tempo. The spatial properties of the haptic world are given by the composition of a score for particle dance. Free notation for sysyphian eternal soul players. Playing a common song of our time and space. Wave. Space between the particles - emptiness. The shape given by the structure of particle dances. So how can you get it. Radiation, Fuse. This is the erosion of the score, the decomposition of the system. Deacon and cleaners. Treasure hunters. Is space between shapes empty? Slavery is not due to the impoverishment of man, but to his transformation into an instrument. The impoverishment of the film's medium is the transformation of the instrument from the instrument into a human being. From the apparatus - rewriting the environment of three-dimensional shapes to the surface, on the apparatus - the emulation of human experience schemes. From indifference to false experience.

In the rubber hand illusion (RHI), a rubber hand is placed in front of the participant with the participant's hand out of sight. If both hands are touched simultaneously, the illusion typically occurs. Between RHI studies, differences can be seen in the setup, and results of the illusion strength are inconsistent. One of these differences can be the moving RHI, where the real and rubber hand make the same movements to induce the illusion. The differences led to uncertainty regarding the influence of spatial configuration (i.e., an arrangement of the setup within three-dimensional space) on the illusion of body ownership. With this meta-analysis, I quantify the illusion strength in the moving RHI to be able to conclude if spatial configuration influences the results. A total of nine studies were included that had a total of 391 participants. The results show that the synchronous condition has a stronger illusory effect than the asynchronous condition. However, due to heterogeneity, the sample size may not represent the general population. Sub-group analysis showed no major difference in the illusion strength between a vertical and horizontal setup. These observations do not correspond with classical RHI studies in which vertical and horizontal setups were compared. However, in this meta-analysis, only moving RHI studies were included. In the moving RHI, the experimenter does not enter the visual receptive field of the participant, which may explain why no differences between the setups were found. The results of this meta-analysis cannot be seen as definitive; more research is necessary.

Ablative materials can sustain very high temperatures in which surface thermochemical processes are significant enough to cause surface recession. Existence of moving boundary over a wide range of temperatures, temperature-dependent thermophysical properties of ablators, and no prior knowledge about the location of the moving surface augment the difficulty for predicting the exposed heat flux at the receding surface of ablators. In this paper, the conjugate gradient method is proposed to estimate the unknown surface recession and time-varying net surface heat flux for these kinds of problems. The first order Tikhonov regularization is employed to stabilize the inverse solution. Considering the complicated phenomena that are taking place, it is shown via simulated experiment that unknown quantities can be obtained with reasonable accuracy using this method despite existing noises in the measurement data.

The research problem discussed in the thesis is generally concerned with the investigation of a group of men who work as furniture movers. The problem is focused on the dynamic interplay of status equality and status differentiation as contradictions that render harmony and dissension as common group denominators. Three questions were asked. First, are there consistent ways of behaving while working as a furniture mover? Second, if consistent ways of behavior do exist, how are they related to the notions of status equality and status differentiation? Third, if this latter relationship should exist, can harmony and dissent be conceptualized as common occurrences? Four categories of behavior were found to be quite consistent from job to job. They can be described as 'acts.' The acts that were found are coordination, seriousness, humor and advice. With skill or technique of furniture moving being underlying and related criteria for professionalism, the acts are considered by the movers as being appropriate professional behavior while on a moving job. These acts have both a rigid and a flexible quality. At first glance this statement sounds contradictory; however, it was found that the rigidity of acts arises out of the expectations the movers have while working on a given job, while the flexibility of acts is a result of variations between jobs. These qualities have two important consequences: First, the workers perceive these acts as important in raising their occupational status with customers. In turn, by working together in establishing these acts (some of which have originated with management and others which have originated from the work group itself), they are defining boundaries for all of them to act within. By acting toward these acts, the workers are compromising formal distinctions which management has imposed, and consequently are nearing status equality. Second, due to variations in structural characteristics of different types of moving jobs,individual moods, team moods, and customers, the job or situation in which the job is taking place changes. The acts still remain, but the kinds of things that a mover may do with an act changes. This maneuverability with an act offers the worker a chance to do something different from job to job, or at moments, during a job. In other words, he may be able to experience status differentiation. The contradictions of status equality and status differentiation presented in this thesis are discussed in terms of observed alternative lines of action that a mover may choose' to initiate. Harmony appears if the worker chooses to stay with the professional acts while working, and, in turn, attempts to realize both status equality and status differentiation through the acts and succeeds. The acts themselves strain toward status equality and away from status differentiation. Unless a mover was exceptionally brilliant during a job (with both skill and acts), he had a more difficult time experiencing status differentiation than status equality. Hence, a mover dissenting from the professional acts was not an uncommon sight. The worker may feel confined and stifled by not being himself and therefore act too idiosyncratically in relation to what other workers consider to be professional behavior. Another mode of dissent was observed that arose from the neglect of acts. When this neglect or blockage of the act was apparent, the dissent involved a larger number of movers. The movers would dissent from the acts but for purposes of establishing or re-establishing them. The movers do not; view dissent as being right or wrong, good or bad. Instead, the workers view dissent as both good and bad, right and wrong; it depends upon the context in which the dissent is occurring. At moments, dissent may appear quite natural; at other times, dissent may give rise to fighting, antagonism and sanctioning. Whatever the type of dissent, it is a part of a composite picture of men working together at being furniture movers. Dissent itself is not considered deviant.