6957792 research outputs found
Sort by
Innovative Approaches in Modeling, Control and Diagnostics of Small Turbojet Engines
No full textAbstract: The article presents a survey of research and main results achieved in th
Realism and the everyday in digital games
No full textABSTRACT This paper develops Alexander Galloway's (2006) theory of social realism in games, arguing that a focus on the relationship between mode of representation, the everyday and the social totalit
Figure 1: Our model of QBH training. User-specific Training of a Music Search Engine
No full textAbstract Query-by-Humming (QBH) systems let a user find the desired song in a music database by humming or whistling its melody. Existing systems do not optimize on individual users, once deployed. We present a method to improve QBH performance with user-specific training on a deployed system. Parameters for the singer error model and note transcription are tuned using a genetic algorithm. Testing over a corpus of sung queries [3] our preliminary tests show songs within and near the top ten songs listed
Medication Administration Error in Anaesthetic Practice: AReview of the African Experience
No full text
The Pakistan Development Review 44 : 4 Part II (Winter 2005) pp. 673-694 Citrus Marketing in Punjab: Constraints and Potential for Improvement
No full textConjecture and Proof: A Case of Shifting Identities in Raphael's School of Athens
No full textAbstract Perhaps the greatest challenge presented by Raphael"s School of Athens is its potentially intentional ambiguity. Try as we might to secure identifications for the huddled philosophers massed in its soaring spaces, those identities have a way of shifting with the passage of time. A case in point is a relatively recent argument for Hypatia"s inclusion in the painting. Inextricably linked to the complex program of the Stanza della Segnatura (the room in which it is located), and by extension, to the Neoplatonism of Julius II"s papal court, Raphael"s painting makes an awkward mirror for contemporary notions of mathematical achievement. By turns inspirational and controversial, Hypatia of Alexandria has captured the attention of historians and mathematicians since her "rediscovery" during the Enlightenment. In recent years, two fine biographies of Hypatia, one by Maria Dzielska (1995) the other by Michael Deakin (2007) have gone to great lengths to separate fact from fiction, and to assess her contributions to the field of mathematics. Alejandro Amenábar"s 2010 film, Agora, likewise sought to introduce a modern audience to the historical figure of Hypatia. At the same time, an intriguing tradition has persisted, linking Hypatia to a figure at the lower left side of Raphael"s painting of The School of Athens. The sources of this tradition are murky, indeed, and include an account of an actual, recorded conversation between Raphael and an advisor in the court of Pope Julius II! Spurious or not, such accounts reveal much about how different generations see Raphael"s great gathering, and what meaning we continue to read into the selection of figures that he (or others) made. Competing for center stage are an urge to identify the founders of a given discipline (mathematics, for example) as we understand it now, and a responsibility for understanding the painting in the context of the room in which it appears and the patron for whom it was created. Although a criterion for a great work of art is its potential to inspire new ideas in new audiences, the reverence for demonstrable truth so intrinsic to mathematical investigations must be applied here as well. Within 50 years of its completion, Raphael"s School of Athens was already the focus of a campaign to identify certain key figures with an eye toward unlocking meaning in the Stanza della Segnatura as a whole. Writing first in 1550, but basing his comments on observations begun in 1531 [1] Giorgio Vasari made the bewildering assertion that the bulky figure seated at the lower left-hand side of the painting is the evangelist, St. Matthew. [2] Even allowing for its placement directly across from a painting known as The Disputà, in which Raphael imagines an anachronistic, but powerful debate on the nature of the Eucharist, Vasari"s claim is hard to understand. It has also complicated matters considerably for art historians, as Vasari"s seminal work, The Lives of the Most Excellent Sculptors, Painters, and Architects, published in a second edition in 1568, has served as a key reference ever since. For Vasari, just one artistic generation removed from Raphael and his patrons, the impulse to see The School of Athens and The Disputà as two parts of a whole must have been strong indeed. Whether (as has been argued) Vasari"s confusion lay in the fact that he was working from a later engraving of the painting [3], or whether he was relying on contemporary notions of the way fresco cycles could be "completed" via th
Prolonging the Lifetime of Wireless Sensor Networks Interconnected to Fixed Network Using Hierarchical Energy Tree Based Routing Algorithm
No full textThis research work proposes a mathematical model for the lifetime of wireless sensor networks (WSN). It also proposes an energy efficient routing algorithm for WSN called hierarchical energy tree based routing algorithm (HETRA) based on hierarchical energy tree constructed using the available energy in each node. The energy efficiency is further augmented by reducing the packet drops using exponential congestion control algorithm (TCP/EXP). The algorithms are evaluated in WSNs interconnected to fixed network with seven distribution patterns, simulated in ns2 and compared with the existing algorithms based on the parameters such as number of data packets, throughput, network lifetime, and data packets average network lifetime product. Evaluation and simulation results show that the combination of HETRA and TCP/EXP maximizes longer network lifetime in all the patterns. The lifetime of the network with HETRA algorithm has increased approximately 3.2 times that of the network implemented with AODV
PRECISION SPIN TRACKING FOR ELECTRIC DIPOLE MOMENT SEARCHES
No full textAbstract Several proposed storage ring electric dipole moment (EDM) searches as well as muon g-2 experiments require a precise understanding of the evolution of the spin during the experiment, both theoretically as well as experimentally in order to understand systematic errors. Here we present the computational challenges of these experiments, our way of dealing with them and a comparison of analytical benchmarking cases with simulation results. In the end we give a short overview of future improvements of our program