We examine the structure of baryonic wakes in the cosmological fluid which would form behind GUT-scale cosmic strings at early times (redshifts z > ∼ 100) in an neutrino-dominated universe. We show, using simple analytical arguments as well as 1and 2-dimensional hydrodynamical simulations, that these wakes will not be able to form interesting cosmological objects before the neutrino component c...

Two auditory (1and 2-kHz tones) and two visual (red and white lights) stimuli were used as discriminanda in classical heart rate and instrumental conditioning situations employing the same pigeons as subjects. It was found that while discrimination of the tones was demonstrated easily in the classical situation, a discrimination of the colors was not. Conversely, while discrimination of the col...

We address a generalization of the classical 1and 2-processor unit execution time scheduling problem on dedicated machines. In our chromatic model of scheduling machines have non-simultaneous availability times and tasks have arbitrary release times and due dates. Also, the versatility of our approach makes it possible to generalize all known classical criteria of optimality. Under these stipul...

The excited state properties of uracil, thymine and four analogous uracil compounds have been studied in acetonitrile by steady-state and time-resolved spectroscopy. The excited state lifetimes were measured using femtosecond UV fluorescence upconversion. The excited state lifetimes of uracil and its 1and 3-methyl substituted derivatives are well described by one ultrafast (6100 fs) component. ...

In other to study the effects of salicylic acid on reproductive characters of ‘Elberta’ Peach (Prunus persica L. Batsch) tree, an experiment was carried out based on randomized complete blocks design with four replications in commercial orchard, Kerman, Iran. The application of three concentrations of salicylic acid 0 (control), 1and 2 mM at swollen bud stage were used. Results showed that appl...

BACKGROUND Although outdoor cultivation systems have been widely used for mass production of microalgae at a relatively low cost, there are still limited efforts on outdoor cultivation of carbohydrate-rich microalgae that were further used as feedstock for fermentative bioethanol production. In particular, the effects of seasonal changes on cell growth, CO2 fixation, and carbohydrate production...

Algorithms which guarantee to find globally optimal trajectories by covering a hypervolume of state space become infeasible in high dimensions. We have developed an algorithm which generates locally optimal trajectories without covering a hypervolume which only requires polynomial memory and time. Even though the algorithm does not guarantee a globally optimal trajectory in a deterministic mann...

We investigate maximal gauged supergravity in seven dimensions and some of its solitonic solutions. By focusing on a truncation of the gauged SO(5) R-symmetry group to its U(1) Cartan subgroup, we construct general two charge black holes that are asymptotically anti-de Sitter. We demonstrate that 1and 2-charge black holes preserve 12 and 1 4 of the supersymmetries respectively. Additionally, we...

The goal of this homework assignment was to use linear regression to predict users’ ratings of books sold on Amazon.com. To construct the feature matrix, we tokenized the written review texts in several different ways: With and without stemming, as well as using either single words as tokens or bigrams. The dependent variable is a star rating given by reviewers, ranging from 1 star (very unsati...

We work out the relation between Chern-Simons, 2d Yang-Mills on the cylinder, and Brownian motion. We show that for the unitary, orthogonal and symplectic groups, various observables in Chern-Simons theory on S3 and lens spaces are exactly given by counting the number of paths of a Brownian particle wandering in the fundamental Weyl chamber of the corresponding Lie algebra. We construct a fermi...