1 Solid tumors of childhood display specific serum microRNA profiles Matthew J. Murray, Katie L. Raby, Harpreet K. Saini, Shivani Bailey, Sophie V. Wool, Jane M. Tunnacliffe, Anton J. Enright, James C. Nicholson, Nicholas Coleman. 1 Department of Paediatric Haematology and Oncology, Addenbrooke’s Hospital, Hills Road, Cambridge, CB2 0QQ, UK 2 Department of Pathology, University of Cambridge, Te...

The paper is concerned with nonautonomous generalised Nicholson systems under conditions which imply their permanence: by refining the assumptions for permanence, explicit lower and upper uniform bounds all positive solutions are provided, as well criteria global exponential stability of these systems. In particular, periodic systems, existence a globally exponentially attractive solution deriv...

A G Nicholson, B J Addis, H Bharucha, C A Clelland, B Corrin, A R Gibbs, P S Hasleton, K M Kerr, N B N Ibrahim, S Stewart, W A H Wallace, A U Wells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

We introduce the standard fourth order compact finite difference formulae. We show how these formulae apply in the special case of the heat equation. It is well known that the American option pricing problem may be formulated in terms of the Black Scholes partial differential equation (PDE) together with a free boundary condition. Standard methods allow this problem to be transformed into a mov...

Modulation of the refractive index of glass using ion exchange is a common fabrication method for various micro-optics components, such as waveguide devices, microlenses, and diiractive elements. The design of elements with complicated optical functions has increased the demand for fast numerical simulation of the nonlinear ion-exchange process of two monovalent ions. In this paper, a linear im...

A prototype mobile chip harvester has been designed to harvest forest biomass in the form of 1 ogging residuals for use as energy wood. The prototype is presently undergoing developmental tests. Results are encou raging, indicating mechanical feasibility with prospects of working systems within the next several years. Papers presented before ASAE meetings are consldered to be the property ot th...

The renowned Australian entomologist Alexander J. Nicholson carried out a series of experiments in the 1950s with the intent of learning more about a sheep pest, the blowfly. The results presented here are driven by analyses of the data that Nicholson collected. The situation is of special interest because it involves a system that is nonlinear, has time lags and might be described as non-stati...

Dalam makalah ini, dikaji kestabilan model inang parasit Nicholson-Bailey dengan menggunakan fungsi pertumbuhan Hassel. Model digambarkan dalam bentuk persamaan beda non linier diskrit. Dari hasil analisis diperoleh tiga titik tetap yang kestabilannya ditentukan oleh tingkat reproduksi inang.

General second-order, variable-density, three-step and four-step projection methods are developed to simulate unsteady incompressible interfacial flows. A high-accuracy, variabledensity RKCN projection method is presented, in which the three-stage, low-storage RungeKutta technique and second-order semi-implicit Crank-Nicholson technique are employed to temporally update the convective and diffu...

A commutative ring A is said to be clean if every element of A can be written as a sum of a unit and an idempotent. This definition dates back to 1977 where it was introduced by W. K. Nicholson [7]. In 2002, V. P. Camillo and D. D. Anderson [1] investigated commutative clean rings and obtained several important results. In [4] Han and Nicholson show that if A is a semiperfect ring, then A[Z2] i...