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In this article we define and construct the ϑ-envelope of holomorphy of X for every type ϑ where X is a Riemann domain over a complex Banach space E. We first show that if X is an open connected subset of a Banach space E, then there exists a ϑ-envelope of holomorphy, unique up to isomorphism. Next we extend the result to any connected Riemann domain over a Banach space E. The method...
Induced voltages by indirect lightning cause faults, damage to equipment and malfunctions to electric power systems, compromising the quality, continuity and reliability of the electrical energy supply. In this context, research development is crucial to improve lightning protection procedures, especially for electrical systems located in areas with high ground flash densities. This article presents...
In this work an experimental investigation is carried out to evaluate the performance of two different thermal greases on the temperature behavior of a transmitter used in the payload of two different Brazilian sounding rockets. Initially, a theoretical estimation and analysis of the transmitter temperature was performed. Following, experimental temperature measurements were taken. The results indicate...
Anton 2 is a second-generation special-purpose supercomputer for molecular dynamics simulations that achieves significant gains in performance, programmability, and capacity compared to its predecessor, Anton 1. The architecture of Anton 2 is tailored for fine-grained event-driven operation, which improves performance by increasing the overlap of computation with communication, and also allows a wider...
The new technologies of energy supply and analysis of the operation of electrical systems, brought by the distributed generation and by the smart grid concepts, emphasize even more the importance of conservation of security and reliability of distribution networks. This occurs due to the sensibility of modern equipment being introduced in these networks. At this context, the protection of electric...
Special-purpose computing hardware can provide significantly better performance and power efficiency for certain applications than general-purpose processors. Even within a single application area, however, a special-purpose machine can be far more valuable if it is capable of efficiently supporting a number of different computational methods that, taken together, expand the machine's functionality...
This paper aims to develop a methodology for choosing the inputs of a multilayer fuzzy inference system to forecast time series power demand values in a substation feeder. The forecast is done by analyzing past time series data. On an iteration process., older data with greater correlation with the previous forecast errors are the inputs of the fuzzy system., which has as output a future demand value...
The new technologies of energy supply and analysis of the operation of electrical systems, brought by the distributed generation and by the smart grid concepts, emphasize even more the importance of conservation of security and reliability of distribution networks. This occurs due to the sensibility of modern equipment being introduced in these networks. At this juncture, the protection of electric...
This paper aims to introduce a methodology for choosing the best inputs and tuning a multilayer fuzzy inference system dedicated to estimate future time series power demand values in a substation feeder. On an iteration process, older data with greater correlation with the previous forecast errors are the inputs of the fuzzy system, which has as output a future demand value. It is attempted to estimate...
Most pseudorandom number generators (PRNGs) scale poorly to massively parallel high-performance computation because they are designed as sequentially dependent state transformations. We demonstrate that independent, keyed transformations of counters produce a large alternative class of PRNGs with excellent statistical properties (long period, no discernable structure or correlation). These counter-based...
Strong scaling of scientific applications on parallel architectures is increasingly limited by communication latency. This paper describes the techniques used to mitigate latency in Anton, a massively parallel special-purpose machine that accelerates molecular dynamics (MD) simulations by orders of magnitude compared with the previous state of the art. Achieving this speedup required a combination...
The paper describes the research one an alternative to the introduction of networked computer in the school routine. The research fits into the field of “classrooms of the future” or ”future learning spaces”. The problem that generated the research was the perception of a paradox between theories and practices of innovation of the fields of education and ITC. This reduces the issue of computerization...
Anton is a recently completed special-purpose supercomputer designed for molecular dynamics (MD) simulations of biomolecular systems. The machine's specialized hardware dramatically increases the speed of MD calculations, making possible for the first time the simulation of biologicl molecules at an atomic level of detail for periods on the order of a millisecond---about two orders of magnitude beyond...
Anton is a recently completed special-purpose supercomputer designed for molecular dynamics (MD) simulations of biomolecular systems. The machine's specialized hardware dramatically increases the speed of MD calculations, making possible for the first time the simulation of biological molecules at an atomic level of detail for periods on the order of a millisecond---about two orders of magnitude beyond...
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