On the seafloor of Shoal Bay, Princess Royal Harbour, Albany, Western Australia, lives a suite of four scavenging gastropod species: Nassarius pyrrhus, N. pauperatus (Nassariidae), Cominella eburnea...
LONGBOWBHELLFIRE MISSILE TEST AT (2001)
Framework (meraf) Apache, R. A. Efroymson, W. W. Hargrove, M. J. Peterson, D. S. Jones, W. H. Rose, ...
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Hipponix australis is identified as having a clear preference for the small, up to ∼18 mm, intertidal nassariid Nassarius pauperatus in Princess Royal Harbour, Western Australia, occurring on a...
Impedance of a lossy wedge (2001)
The surface impedance presented to a plane TE‐wave by a wedge of high contrast is derived on the basis that the wedge possesses some absorption. It turns out that, over most of the surface of...
Impedance of an Absorbing Wedge (2001)
The surface impedance offered to an external field by a highly absorbing wedge is determined. Over most of a side the impedance is effectively constant having the same value as if the side were an...
Five integral inequalities; an inheritance from Hardy and Littlewood (1998)
W. D. Evans, W. N. Everitt, W. K. Hayman, D. S. Jones
This paper is concerned with five integral inequalities considered as generalisations of an inequality first discovered by G.H. Hardy and J.E. Littlewood in 1932. Subsequently the inequality was...
A solution for the diffraction of electromagnetic waves by a perfect conducting semi-infinite cone of arbitrary cross-section is derived. In the process some discrepancies in existing formulae for...
PHYSICAL OPTICS AND THE SURFACE RADIATION CONDITION (1994)
By reinterpreting a result due to Ursell (Proc. Camb. phil. Soc. 53 (1957) 115) for convex objects a foundation is provided for high-frequency approximations such as physical optics and surface...
An improved surface radiation condition (1992)
A new three-dimensional surface radiation condition is derived which has the advantage over previous ones of going over, in two dimensions, to the most accurate ones known. It is tested against exact...
A Method for Solving the Inverse Problem in Soft Acoustic Scattering (1990)
The inverse problem considered is to determine the shape of an acoustically soft obstacle in R3 from a knowledge of the time-harmonic incident plane wave and the far-field pattern of the scattered...
THE EIGENVALUES OF A CAVITY RESONATOR (1988)
It is shown that the mth eigenvalue of a simply-connected cavity resonator of volume v satisfies the inequality
Surface Radiation Conditions (1988)
A general method, capable of yielding surface radiation conditions in a straightforward manner, is described. It encompasses all existing proposals for surface radiation conditions and explains their...
Boundary Integrals in Elastodynamics (1985)
Surface integral equations with a unique solution are devised for the exterior D- and T-problems of elastodynamics. The order of the singularities of the kernels is reduced by transformations which...
SCATTERING BY INHOMOGENEOUS DIELECTRIC PARTICLES (1985)
The field scattered by an inhomogeneous diclectric subject to electromagnetic radiation of long wavelength is expressed, to zero order, in terms of a pattern matrix. Variational principles are...
A UNIQUENESS THEOREM IN ELASTODYNAMICS (1984)
A uniqueness theorem is established for the scattering of harmonic elastic waves by a body with continuously varying parameters placed in a homogeneous medium.
Factorization of a Wiener--Hopf Matrix (1984)
The factorization of 2 � 2 Wiener–Hopf matrices is discussed. Explicit factors are found for matrices for which a commutative decomposition is possible. In addition, the factors of various...
LOW-FREQUENCY SCATTERING BY A BODY IN LUBRICATED CONTACT (1983)
Integral equations are obtained for the scattering of a harmonic elastic wave by an object in fully lubricated contact with its surroundings. The uniqueness properties of the equations are studied in...
THE SECOND CORRECTION IN LOW-FREQUENCY SCATTERING BY A BODY IN LUBRICATED CONTACT (1983)
It is shown that the second-order far field in the low-frequency scattering of a harmonic elastic wave by a body in fully lubricated contact with its environment can be expressed by means of an...
A Note on Galerkin's Method (1982)
The properties of strongly and uniformly minimal systems are discussed in the context of Galerkin's method and various criteria which insure that a system has the requisite behaviour are derived. The...
LOW-FREQUENCY SCATTERING IN ELASTICITY (1981)
When a non-uniformity in a homogeneous isotropic elastic body is subjected to an incoming harmonic wave of low frequency, the scattered field can be expressed in terms of static approximations of...
THE SCATTERING OF LONG ELECTROMAGNETIC WAVES (1980)
When electromagnetic radiation of low frequency falls on a dielectric body a first approximation to the scattered field can be found by Rayleigh's procedure. It depends upon the solution of a...
The nucleotide sequence of Scenedesmus obliquus chloroplast tRNAfMet (1980)
The chloroplast initiator tRNAfMet from the green alga Scenedesmus obliguus has been purified and its sequence shown to be p C-G-C-A-G-G-A-U-A-G-A-G-C-A-G-U-C-U- Gm -G-D-A-G-C-U-C- m22...
The Kontorovich-Lebedev Transform (1980)
It is pointed out that difficulties can occur with the Kontorovich-Lebedev transform when expressed in terms of Hankel functions and a new form is proposed which overcomes these difficulties.
Low Frequency Electromagnetic Radiation (1979)
The field scattered by a dielectric body irradiated by a low frequency electromagnetic wave can be expressed, to a first approximation, in terms of a scattering tensor. Variational principles are...
A Note on the Intersection of Dispersion Curves of a Fluid-loaded Elastic Plate (1979)
An investigation is made of the behaviour of a fluid-loaded elastic plate at the points of intersection of curves corresponding to symmetrical and antisymmetrical modes in the dispersion diagram. At...
Acoustics of a Splitter Plate (1978)
According to geometrical acoustics, zones of silence can occur when sound waves traverse flows. These zones are not often observed in practice. It is suggested that one reason for this in jet flows...
ELECTROMAGNETIC TUNNELLING (1978)
General formulae are obtained for the transmission and reflection of highfrequency harmonic electromagnetic waves by a curved interface between two homogeneous dielectrics. If the surface is concave...
SCATTERING OF SOUND BY A LIFTING BOUNDARY (1976)
A rigid cylinder is placed in a fluid with steady velocity perpendicular to its generators and with a given circulation. The flow is irradiated by time-harmonic sound waves from a line source...
INTEGRAL EQUATIONS FOR THE EXTERIOR ACOUSTIC PROBLEM (1974)
A class of integral equations is introduced for the exterior Neumann problem of acoustics which it is believed will be useful for numerical work as well as having analytical value. An alternative...
DOUBLE KNIFE-EDGE DIFFRACTION AND RAY THEORY (1973)
The signal produced by the diffraction of two knife-edges is determined in a high-frequency approximation and the resulting field is compared with the predictions of ray theory. It is found that ray...
The Variable Metric Algorithm for Non-Definite Quadratic Functions (1973)
This paper proves that the variable metric algorithm, when, applied to a general quadratic function, either diverges or converges to the stationary point in a finite number of steps, the number not...
Aerodynamic Sound Due to a Source Near a Half-Plane (1972)
The effect of applying a Kutta-Joukowski condition at the edge of a semi-infinite plane which is generating noise in a turbulent fluid at low Mach numbers is examined. It is found that in some...
The uniqueness of the solution to the singular integral equation for the soundhard disc is demonstrated.
Fourier Transforms and the Method of Stationary Phase (1966)
Some theorems are derived for the asymptotic behaviour of the Fourier transform of a generalized function under conditions which are likely to occur in applied mathematics and which should be capable...
DIFFRACTION OF SHORT WAVELENGTHS BY A RIGID CIRCULAR DISK (1965)
A singular integral equation is found for the pressure distribution on a rigid circular disk in an axisymmetric sound wave. From this integral equation is derived an asymptotic development of the...
Some Remarks on Hilbert Transforms (1965)
Some of the properties of Hilbert transforms, when considered in terms of generalized functions, are obtained. A new class is introduced which does not limit the application of Hilbert transforms to...
DIFFRACTION BY AN EDGE AND BY A CORNER (1952)
Conditions are given which are sufficient to ensure that the current density normal to an edge is zero at the edge and that there is no line distribution of charge on the edge. An extra condition is...
A SIMPLIFYING TECHNIQUE IN THE SOLUTION OF A CLASS OF DIFFRACTION PROBLEMS (1952)
EXAMPLES are given which show that considerable simplification can be achieved in the formulation of diffraction problems which lead to Wiener-Hopf integral equations by taking the transform before...
NOTE ON DIFFRACTION BY AN EDGE (1950)
On the assumption that the electric current and charge on a perfectly conducting sheet are integrable in the neighbourhood of the edge, it is shown that the line distributions of electric current and...