Results 1 - 10 of 6,288

Tolls and Transit Frequencies Optimization

by G. Bellei, G. Gentile, N. Papola
"... In this paper a tolls and transit frequencies optimization problem has been reduced to a specific equivalent equilibrium assignment problem and its local solution conditions have been stated. A specific fixed-point approach algorithm has also been devised, introducing a hyper-network consisting of a ..."
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In this paper a tolls and transit frequencies optimization problem has been reduced to a specific equivalent equilibrium assignment problem and its local solution conditions have been stated. A specific fixed-point approach algorithm has also been devised, introducing a hyper-network consisting

Estimation of the number of nucleotide substitutions in the control region of mitochondrial DNA in humans and chimpanzees.

by Koichiro Tamura , Masatoshi Nei - Mol Biol Evol , 1993
"... Examining the pattern of nucleotide substitution for the control region of mitochondrial DNA ( mtDNA ) in humans and chimpanzees, we developed a new mathematical method for estimating the number of transitional and transversional substitutions per site, as well as the total number of nucleotide sub ..."
Abstract - Cited by 925 (4 self) - Add to MetaCart
substitutions. In this method, excess transitions, unequal nucleotide frequencies, and variation of substitution rate among different sites are all taken into account. Application of this method to human and chimpanzee data suggested that the transition / transversion ratio for the entire control region was -15

Mega: molecular evolutionary genetic analysis software for microcomputers

by Sudhir Kumar, Koichiro Tamura, Masatoshi Nei - CABIOS , 1994
"... A computer program package called MEGA has been developed for estimating evolutionary distances, reconstructing phylogenetic trees and computing basic statistical quantities from molecular data. It is written in C+ + and is intended to be used on IBM and IBM-compatible personal computers. In this pr ..."
Abstract - Cited by 505 (10 self) - Add to MetaCart
, new algorithms of branch-and-bound and heuristic searches are implemented. In addition, MEGA computes statistical quantities such as nucleotide and amino acid frequencies, transition/transversion biases, codon frequencies (codon usage tables), and the number of variable sites in specified segments

Highly accurate transition frequencies in the H2

by Werner Absorption B, W. Ubachs, E. Reinhold
"... Abstract: The transition frequencies of low-J excitation lines in the B1+u − X1+g, (v′, 0) Lyman bands have been measured for v ′ = 2–18 and in the C1u−X1+g, (v′, 0) Werner bands for v ′ = 0–4, using a narrow-band tunable extreme UV laser source at wavelengths λ = 92–105 nm in conjunction with the ..."
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Abstract: The transition frequencies of low-J excitation lines in the B1+u − X1+g, (v′, 0) Lyman bands have been measured for v ′ = 2–18 and in the C1u−X1+g, (v′, 0) Werner bands for v ′ = 0–4, using a narrow-band tunable extreme UV laser source at wavelengths λ = 92–105 nm in conjunction

Trend Vector Representation of Multiple Transition Frequency Tables by Regularized Homogeneity Analysis

by Kohei Adachi
"... Individuals ’ choices of categories observed on two occasions are described by transition frequency tables. I present a regularized optimal scaling method to analyze a set of the tables obtained from multiple sources and represent a transition trend for each source as a vector. In the method, transi ..."
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Individuals ’ choices of categories observed on two occasions are described by transition frequency tables. I present a regularized optimal scaling method to analyze a set of the tables obtained from multiple sources and represent a transition trend for each source as a vector. In the method

Priming cue encoding by manipulating transition frequency in explicitly cued task switching

by Darryl W. Schneider, Gordon D. Logan - Psychonomic Bulletin & Review , 2006
"... Explicitly cued task switching with multiple cues per task permits three types of transitions: cue repetitions (cue and task repeat), task repetitions (cue changes but task repeats), and task alternations (cue and task change). The difference between task alternations and task repetitions can be int ..."
Abstract - Cited by 18 (10 self) - Add to MetaCart
be interpreted as a switch cost, but its magnitude varies substantially across experiments. We investigated how switch cost is affected by transition frequency (how often subjects repeat and switch tasks) with an experiment in which each transition had a frequency of.70 in separate sessions. Switch cost

Blackbody radiation shift of the 133Cs hyperfine transition frequency

by Salvatore Micalizio, Aldo Godone, Davide Calonico, Luca Lorini - Physical Review A
"... We report the theoretical evaluations of the static scalar polarizability of the 133Cs ground state and of the black body radiation shift induced on the transition frequency between the two hyperfine levels with mF = 0. This shift is of fundamental importance in the evaluation of the accuracy of the ..."
Abstract - Cited by 3 (0 self) - Add to MetaCart
We report the theoretical evaluations of the static scalar polarizability of the 133Cs ground state and of the black body radiation shift induced on the transition frequency between the two hyperfine levels with mF = 0. This shift is of fundamental importance in the evaluation of the accuracy

Adelson,"A Multiresolution Spline with Application to Image Mosaics",

by Peter J Burt , Edward H Adelson - ACM Transactions on Graphics, , 1983
"... We define a multiresolution spline technique for combining two or more images into a larger image mosaic. In this procedure, the images to be splined are first decomposed into a set of band-pass filtered component images. Next, the component images in each spatial frequency hand are assembled into ..."
Abstract - Cited by 362 (4 self) - Add to MetaCart
We define a multiresolution spline technique for combining two or more images into a larger image mosaic. In this procedure, the images to be splined are first decomposed into a set of band-pass filtered component images. Next, the component images in each spatial frequency hand are assembled

Glaze "Measurement of the Unperturbed Hydrogen Hyperfine Transition Frequency

by Helmut Hellwig, Robert F. C. Vessot, Martin W. Levine, Paul W. Zitzewitz, David W. Allan, David, J. Glaze - IEEE Trans. on Instr. and Meas , 1970
"... Abstracl-The results of a joint experiment aimed primarily at the determination of the frequency of the H1 hyperfine transition (F = 1, mF =O) cf ( F = 0, mF 0) is reported. In terms of the frequency of the Cs133 hyperfine transition ( F = 4, mF = 0) c- * ( F = 3, mF O), defined as 9192 631 770 H ..."
Abstract - Cited by 3 (0 self) - Add to MetaCart
Abstracl-The results of a joint experiment aimed primarily at the determination of the frequency of the H1 hyperfine transition (F = 1, mF =O) cf ( F = 0, mF 0) is reported. In terms of the frequency of the Cs133 hyperfine transition ( F = 4, mF = 0) c- * ( F = 3, mF O), defined as 9192 631 770

MEASUREMENT OF THE LOWEST MILLIMETER-WAVE TRANSITION FREQUENCY OF THE CH RADICAL

by S Truppe , R J Hendricks , E A Hinds , M R Tarbutt
"... ABSTRACT The CH radical offers a sensitive way to test the hypothesis that fundamental constants measured on earth may differ from those observed in other parts of the universe. The starting point for such a comparison is to have accurate laboratory frequencies. Here, we measure the frequency of th ..."
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ABSTRACT The CH radical offers a sensitive way to test the hypothesis that fundamental constants measured on earth may differ from those observed in other parts of the universe. The starting point for such a comparison is to have accurate laboratory frequencies. Here, we measure the frequency
Results 1 - 10 of 6,288