John Arroyo

Learn More
This paper proposes a systematic analysis and design procedure for simultaneously determining the best locations and input signals of flexible AC transmission system (FACTS) devices in order to damp out inter-area oscillations. First, a modified modal power flow oscillation flow method is developed to determine the nature of the energy exchange over the(More)
We took a collection of 100 drum beats from popular music tracks and estimated the measure length and downbeat position of each one. Using these values, we normalized each pattern to form an ensemble of aligned drum patterns. Principal Component Analysis on this data set results in a set of basis ‘patterns’ that can be combined to give approximations and(More)
The diagnostic work-up of atypical chest pain frequently leads to invasive procedures. However, this painful symptomatology can sometimes be of benign origin and respond to simple therapeutic manoeuvres. A number of musculoskeletal conditions such as costovertebral joint dysfunctions should be carefully considered. We report five cases in which patient(More)
1. The aim of this study was to establish a simple and reliable experimental pain model that could distinguish the analgesic effects of non-steroidal anti-inflammatory drug (NSAID) treatment from placebo in human volunteers. 2. The reproducibility and reliability over time of subject pain ratings was compared using cutaneous electrical stimuli applied to(More)
A patient with Marfan syndrome presented with enlargement of lumbosacral spinal canal with a bulky meningocele, and a fusiform aneurysm of the ascending aorta. In Marfan syndrome, the presence of a meningocele is extremely rare, but 60% of the patients develop cardio-vascular complications (a frequent cause of death). MRI is the imaging technique of choice(More)
MEAPsoft Chopshop is a hybrid performance which is part preconceived composition, DJ performance, and improvisation. Three of my composed pieces and one Chris Mann Remix were manipulated using MEAPsoft to create 8 new pieces. These 8 new tracks are then mixed live in a sort of Electro-Acoustic turntabalism manner. These tracks are mixed and cut together(More)
Although nasopharyngeal angiofibromas usually occur during puberty and adolescence, thus being considered as juvenile, very rare documented reports describe this condition in old persons. The case of a 62-year-old man with a nasopharyngeal angiofibroma successfully resected is presented. It was the only lesion found in an old individual among 283 cases(More)
Eigensynth is a novel synthesis engine for extracting and generating rhythms. The idea being that the user trains the synthesizer with drumming samples instead of programming them in a traditional paradigm. Rhythms are extracted using signal processing techniques, normalized and then sent for analysis using Principal Component Analysis (PCA). The original(More)
  • 1