Box C/D ribonucleoprotein particles (RNPs) are 2'-O-methylation enzymes required for maturation of ribosomal and small nuclear RNA. Previous biochemical and structural studies of the box C/D RNPs were limited by the unavailability of purified intact RNPs. We developed a bacterial co-expression strategy based on the combined use of a multi-gene expression system and a tRNA-scaffold construct tha...

when the past observations are correlated with future observations and their correlation is significant, the time series has long memory. in this paper the contagion effect of volatilities, with consideration of long-run effect, is investigated. the basic model is bekk (1, 1) and fbekk (1,d,1), model extended long-run memory parameter (d) is considered and estimated. furthermore in this paper p...

We show that the expected number of maximal empty axis-parallel boxes amidst n random points in the unit hypercube [0, 1] in R is (1±o(1)) (2d−2)! (d−1)! n ln d−1 n, if d is fixed. This estimate is relevant for analyzing the performance of exact algorithms for computing the largest empty axis-parallel box amidst n given points in an axis-parallel box R, especially the algorithms that proceed by...

Y. S. CHAUHAN 1*, G. C. WRIGHT 2, R. C. N. RACHAPUTI 1, D. HOLZWORTH 3, A. BROOME , S. KROSCH AND M. J. ROBERTSON Department of Employment, Economic Development and Innovation (DEEDI), P.O. Box 23, Kingaroy, Queensland 4610, Australia 2Peanut Company of Australia, P.O. Box 26, Kingaroy, Queensland 4610, Australia CSIRO, P.O. Box 102, Toowoomba, Queensland 4350, Australia 4CSIRO, Private Bag 5, ...

Frank Michler,1, ∗ Hendrik van Hees,1, 2, † Dennis D. Dietrich,1, ‡ Stefan Leupold,3, § and Carsten Greiner1, ¶ 1Institut für Theoretische Physik, Goethe-Universität Frankfurt, Max-von-Laue-Straße 1, D-60438 Frankfurt, Germany 2Frankfurt Institute for Advanced Studies (FIAS), Ruth-Moufang-Straße 1, D-60438 Frankfurt, Germany 3Institutionen för fysik och astronomi, Uppsala Universitet, Box 516, ...

1 L. Tettey-Larbi, 1, 2 E. O. Darko, 2 C. Schandorf, 3 A. A. Appiah, 4 F. Sam, 1, 2 A. Faanu, 1 D. K. Okoh, 1 H. Lawluvi, 1 B. K. Agyeman, 1 C. Kansaana, 1 P. A. Amoah, 1 R. K. Osei, 1 R. Agalga, 1 S. Osei Radiation Protection Institute, Ghana Atomic Energy Commission, P. O. Box LG 80, Legon, Ghana. Graduate School of Nuclear and Allied Sciences, University of Ghana, P. O. Box AE 1, Atomic Ener...

In the directed minimum spanning tree problem (DMST, also called weight arborescence), we are given a weighted graph, and root node r. Our goal is to construct minimum-weight tree, rooted at r oriented outwards. We present first sub-quadratic DMST algorithm in distributed $${\mathsf {CONGEST}}$$ network model, where messages exchanged between nodes bounded size. consider three versions of model...

Model identification is an important and complicated step within the autoregressive integrated moving average (ARIMA) methodology framework. This step is especially difficult for integrated series. In this article first investigate Box-Jenkins methodology and its faults in detecting model, and hence have discussed the problem of outliers in time series. By using this optimization method, we wil...