7,843 research outputs found
The application of interactive graphics to large time-dependent hydrodynamics problems
A written companion of a movie entitled "Interactive Graphics at Los Alamos Scientific Laboratory" was presented. While the movie presents the actual graphics terminal and the functions performed on it, the paper attempts to put in perspective the complexity of the application code and the complexity of the interaction that is possible
Kata Sifat Dalam Bahasa Inggris Dan Bahasa Tabaru Suatu Analisis Kontrastif
This study entitled “ The Adjective in English and Tabaru Language: A Contrastive Analysis‟‟ aims at identifiying and classifiying the adjectives in English and Tabaru Language, in terms of froms types and position. The English data were collected from some English book. while the Tabaru Language data was collected from six s informants. The data was analyzed using Frank , than theory than contrasted Lado‟s theory to find out the differences adjective of both Language in terms of their types and position. The result shows that English has six types of adjectives those are determiner ( article, demonstrative adjective, possessive adjective, numeral adjective, relative and interrogative adjective, and adjective of indenfinitie quantity). And descriptive adjectives whereas Tabaru Language has those types except relative adjective in term of position. Tabaru Language doesn‟t have adjectives after in definite pronoun
Laser printer\u27s image quality using paper substrates
This thesis reports the results of an investigation into the quality of an image produced by a laser printer. The laser printer used was the Kodak Ektaprint Electronic Publishing System, 300 dots per inch, resolution. It was found that certain aspects of the image quality vary with the paper substrate. Papers used in this experiment varied in basis weights and qualities of smoothness, brightness, gloss, opacity, porosity and caliper.
The papers chosen were of three basis weights, two of each weight. six papers in all were tested.
Quantitfication and subjective judgement were used for evaluation of image quality. Image quality was evaluated based on the following criteria:
(a) Tonal reproduction/toner transfer
(b) Resolution: (i) number of lines per millimeter resolved
(ii) Line thickness in millimeters reprduced
(c) Edge Definition as defined by edge raggedness and blur
Some aspects of image quality were affected by paper variables. Basis weight alone does not affect image quality. However, factors such as smoothness, porosity and caliper had a significant, although subtle effect on tonal reproduction
Deconvolving the information from an imperfect spherical gravitational wave antenna
We have studied the effects of imperfections in spherical gravitational wave
antenna on our ability to properly interpret the data it will produce. The
results of a numerical simulation are reported that quantitatively describe the
systematic errors resulting from imperfections in various components of the
antenna. In addition, the results of measurements on a room-temperature
prototype are presented that verify it is possible to accurately deconvolve the
data in practice.Comment: 5 pages, 2 figures, to be published in Europhysics Letter
On the Sensitivity of a Hollow Sphere as a Multi-modal Resonant Gravitational Wave Detector
We present a numerical analysis to simulate the response of a spherical
resonant gravitational wave detector and to compute its sensitivity. Under the
assump- tion of optimal filtering, we work out the sensitivity curve for a
sphere first taking into account only a single transducer, and then using a
coherent analysis of the whole set of transducers.Comment: 24 pages, 11 figures, published versio
Cosmological solutions in generalized hybrid metric-Palatini gravity
We construct exact solutions representing a
Friedmann-Lema\^itre-Robsertson-Walker (FLRW) universe in a generalized hybrid
metric-Palatini theory. By writing the gravitational action in a scalar-tensor
representation, the new solutions are obtained by either making an ansatz on
the scale factor or on the effective potential. Among other relevant results,
we show that it is possible to obtain exponentially expanding solutions for
flat universes even when the cosmology is not purely vacuum. We then derive the
classes of actions for the original theory which generate these solutions.Comment: 14 pages, 17 figure
Stream Learning in Energy IoT Systems: A Case Study in Combined Cycle Power Plants
The prediction of electrical power produced in combined cycle power plants is a key challenge in the electrical power and energy systems field. This power production can vary depending on environmental variables, such as temperature, pressure, and humidity. Thus, the business problem is how to predict the power production as a function of these environmental conditions, in order to maximize the profit. The research community has solved this problem by applying Machine Learning techniques, and has managed to reduce the computational and time costs in comparison with the traditional thermodynamical analysis. Until now, this challenge has been tackled from a batch learning perspective, in which data is assumed to be at rest, and where models do not continuously integrate new information into already constructed models. We present an approach closer to the Big Data and Internet of Things paradigms, in which data are continuously arriving and where models learn incrementally, achieving significant enhancements in terms of data processing (time, memory and computational costs), and obtaining competitive performances. This work compares and examines the hourly electrical power prediction of several streaming regressors, and discusses about the best technique in terms of time processing and predictive performance to be applied on this streaming scenario.This work has been partially supported by the EU project iDev40. This project has received funding
from the ECSEL Joint Undertaking (JU) under grant agreement No 783163. The JU receives support from the
European Union’s Horizon 2020 research and innovation programme and Austria, Germany, Belgium, Italy,
Spain, Romania. It has also been supported by the Basque Government (Spain) through the project VIRTUAL
(KK-2018/00096), and by Ministerio de Economía y Competitividad of Spain (Grant Ref. TIN2017-85887-C2-2-P)
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