1,050 research outputs found
Current in Wave Driven Plasmas
A theory for the generation of current in a toroidal plasma by
radio-frequency waves is presented. The effect of an opposing electric field is
included, allowing the case of time varying currents to be studied. The key
quantities that characterize this regime are identified and numerically
calculated. Circuit equations suitable for use in ray-tracing and transport
codes are given.Comment: LaTeX 2.09, 26 pages, 7 figure
HSPF Approaches to Unique Conditions in the St.Johns River Watershed Hydrology Models for the Water Supply Impact Study
Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchiv
Noise reduction in digital images
As the popularity of digital cameras increases, some limitations of digital technology are becoming apparent. One limitation is the appearance of additive noise in images acquired using long exposure times. Long exposure times are necessary any time you need to take an image in conditions that have a low level of illumination. Pictures taken at night, in a large room such as an auditorium, or forensics images are examples of times when a long exposure time is necessary. This research project has resulted in the development of a technique to reduce the additive noise present in these images. The first step in this process is the characterization of an individual Charge-Coupled Device (CCD) array in a digital camera. This information is then used to selectively median filter individual color channels of images acquired using the characterized array. Experiments have shown this technique significantly reduces the additive noise in an image without noticeable loss of image sharpness
Society\u27s Changing Values: A Cultural Perspective on the Sexualizing of Male Villains and Antiheroes in Film and Television
This paper analyzes the relationship between recent cultural changes in Western society and the growing popularity of sexy anti-heroes and villains in film and television. The first section discusses the way society’s concepts of villainy have changed since the birth of film-making thanks to changing moral and religious values. I then use four characters: Captain Jack Sparrow from Pirates of the Caribbean, Loki from the Marvel Cinematic Universe, Lucifer from the FOX and Netflix series Lucifer, and Damon Salvatore from The Vampire Diaries to explore how television and film industries use attractive actors and sexualize immoral behavior to make such characters attractive to audiences. Based on these analyses, I argue that the explosion of sexualized antiheroes in modern film and television is a product of our own human desires for freedom from the confines of social standards, which we can embrace more fully than ever before thanks to society’s growing secularity and detachment from traditional Puritan values
William Faulkner: The sins and the curse
William Faulkner is not only a Southerner by birth , he is a Southerner by choice. He has spent most of his life in the small Southern community of Oxford, Mississippi. He often works with a southern setting, presenting a study of Negro and white relationships
Genome Scanning Methods for Comparing Sequences Between Groups, with Application to HIV Vaccine Trials
Consider a placebo-controlled preventive HIV vaccine efficacy trial. An HIV amino acid sequence is measured from each volunteer who acquires HIV, and these sequences are aligned together with the reference HIV sequence represented in the vaccine. We develop genome scanning methods to identify HIV positions at which the amino acids in sequences from infected vaccine recipients tend to be more divergent from the corresponding reference amino acid than the amino acids in sequences from infected placebo recipients. We consider five two-sample test statistics, based on Euclidean, Mahalanobis, and Kullback-Leibler divergence measures. Weights are incorporated to reflect biological information contained in diverent amino acid positions and substitutions. Position-wise p-values are obtained by approximating the null distribution of the statistics either by a permutation procedure or by nonparametric estimation. Modified Bonferroni and false discovery rate procedures that exploit the discrete nature of the genetic data are used to infer statistically significant signature positions. The methods are examined in simulations and are applied to data from a vaccine trial. More broadly, these methods address the general problem of comparing discrete frequency distributions between groups in a high-dimensional data setting
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