Skip to main content

Research Repository

Advanced Search

All Outputs (6187)

Structure and dynamics of central European amphibian populations: A comparison between Triturus dobrogicus (Amphibia, Urodela) and Pelobates fuscus (Amphibia, Anura) (1995)
Journal Article
Jehle, R., Hodl, W., & Thonke, A. (1995). Structure and dynamics of central European amphibian populations: A comparison between Triturus dobrogicus (Amphibia, Urodela) and Pelobates fuscus (Amphibia, Anura). Australian journal of ecology, 20, 362-366

During a long-term study of the amphibian fauna on an artificial island near Vienna (Austria), one isolated site was completely encircled with a permanent drift fence and pitfall traps. Eleven amphibian species occurred at the study site. For the Com... Read More about Structure and dynamics of central European amphibian populations: A comparison between Triturus dobrogicus (Amphibia, Urodela) and Pelobates fuscus (Amphibia, Anura).

Ultrabroad-bandwidth multifrequency Raman generation (1994)
Journal Article
Mcdonald, G., New, G., Losev, L., Lutsenko, A., & Shaw, M. (1994). Ultrabroad-bandwidth multifrequency Raman generation. Optics Letters, 19(18), 1400-1402. https://doi.org/10.1364/OL.19.001400

We report on the modeling of transient stimulated rotational Raman scattering in H2 gas. We predict a multifrequency output, spanning a bandwidth greater than the pump frequency, that may be generated without any significant delay with respect to the... Read More about Ultrabroad-bandwidth multifrequency Raman generation.

Pattern formation in a passive Kerr cavity (1994)
Journal Article
Scroggie, A., Firth, W., Mcdonald, G., Tlidi, M., Lefever, R., & Lugiato, L. (1994). Pattern formation in a passive Kerr cavity. Chaos, Solitons and Fractals, 4(8-9), 1323-1354. https://doi.org/10.1016/0960-0779%2894%2990084-1

Analytical and numerical investigations of a cavity containing a Kerr medium are reported. The mean field equation with plane-wave excitation and diffraction is assumed. Stable hexagons are dominant close to threshold for a self-focusing medium. B... Read More about Pattern formation in a passive Kerr cavity.

The effect of a foraging device (The ‘Edinburgh Foodball’) on the behaviour of pigs (1994)
Journal Article
Young, R., Carruthers, J., & Lawrence, A. (1994). The effect of a foraging device (The ‘Edinburgh Foodball’) on the behaviour of pigs. Applied Animal Behaviour Science, 39(3-4), 237-247. https://doi.org/10.1016/0168-1591%2894%2990159-7

Sows housed under conditions of food and physical restriction often perform behaviours indicative of poor welfare (e.g. repetitive chain chewing), one cause of which may be the inability of sows to express foraging behaviour under confined conditions... Read More about The effect of a foraging device (The ‘Edinburgh Foodball’) on the behaviour of pigs.

Feeding behaviour of pigs in groups monitored by a computerized feeding system (1994)
Journal Article
Young, R., & Lawrence, A. (1994). Feeding behaviour of pigs in groups monitored by a computerized feeding system. Animal Science, 58(1), 145-152. https://doi.org/10.1017/S0003356100007182

Electronic feeding systems for progeny testing pigs, allow selection to occur under conditions found on commercial farms. This paper reports on the feeding behaviour of six groups of 10 pigs, balanced for sex and initial body weight (mean starting an... Read More about Feeding behaviour of pigs in groups monitored by a computerized feeding system.

Dynsmics in canonical spin-glasses observed by muon spin depolarization (1994)
Journal Article
Campbell, I., Amato, A., Gygax, F., Herlach, D., Schenck, A., Cywinski, R., & Kilcoyne, S. (1994). Dynsmics in canonical spin-glasses observed by muon spin depolarization. Physical Review Letters, 72(8), 1291-1294. https://doi.org/10.1103/PhysRevLett.72.1291

Muon spin depolarization has been studied in moderately concentrated AgMn and AuFe alloys from the freezing temperature T-g up to 300 K. The muon depolarization function can be analyzed to show that the temperature dependence of the strongly nonexpon... Read More about Dynsmics in canonical spin-glasses observed by muon spin depolarization.

Interaction between professionals and researchers: Creating research synergies (1994)
Journal Article
Creating research synergies. European Journal of Engineering Education, 19(4), https://doi.org/10.1080/03043799408923313

This paper treats as an innovation the creation of a postgraduate programme of research which acts as a focus for industrial collaboration. The idea, the networks created and the launch of the programme are described. Lessons from experience are re... Read More about Interaction between professionals and researchers: Creating research synergies.

Measuring auditorium seat absorption (1994)
Journal Article
Davies, W., Orlowski, R., & Lam, Y. (1994). Measuring auditorium seat absorption. ˜The œJournal of the Acoustical Society of America (Online), 96(2), 879-888. https://doi.org/10.1121/1.410263

There is a need for a more accurate laboratory measurement method to predict auditorium seat absorption. The traditional method tends to overpredict the absorption of the exposed front and sides of seating blocks. An alternative reverberation chamber... Read More about Measuring auditorium seat absorption.

New attributes of seat dip attenuation (1994)
Journal Article
Davies, W., & Lam, Y. (1994). New attributes of seat dip attenuation. Applied Acoustics, 41(1), 1-23. https://doi.org/10.1016/0003-682X%2894%2990082-5

New measurements have been made on the low-frequency attenuation of an impulse excitation over-seating in an unoccupied concert hall and on scale model seats. Two new attributes of the phenomenon were found the attenuation varied over time and the wi... Read More about New attributes of seat dip attenuation.

A review of expert systems for chromatography (1994)
Journal Article
Bryant, C., Adam, A., Taylor, D., & Rowe, R. (1994). A review of expert systems for chromatography. Analytica Chimica Acta, 297(3), 317-347. https://doi.org/10.1016/0003-2670%2894%2900209-6

Expert systems for chromatography are reviewed. A taxonomy is proposed that allows present (and future) expert systems in this area to be classified and facilitates an understanding of their inter-relationship. All the systems are described focusing... Read More about A review of expert systems for chromatography.

From English to formal specifications (1994)
Journal Article
Vadera, S., & Meziane, F. (1994). From English to formal specifications. Computer Journal, 37(9), 753-763. https://doi.org/10.1093/comjnl/37.9.753

Formal methods provide an approach in which design steps can be shown to satisfy a specification. However, if a formal specification is wrong, then although the design steps may satisfy the formal specification, they are unlikely to satisfy the requi... Read More about From English to formal specifications.

Southern expansion of the geographical distribution of Cacajao melanocephalus melanocephalus (1993)
Journal Article
Boubli, J. (1993). Southern expansion of the geographical distribution of Cacajao melanocephalus melanocephalus. International Journal of Primatology, 14(6), 933-937. https://doi.org/10.1007/BF02220262

Cacajao melanocephalus melanocephalus, a subspecies of black uakari, was thought to be restricted to southern Venezuela. Observations of two groups of them in Pico da Neblina National Park, Brazil, suggest that its distribution should be extended to... Read More about Southern expansion of the geographical distribution of Cacajao melanocephalus melanocephalus.

Switching dynamics of spatial solitary wave pixels (1993)
Journal Article
Mcdonald, G., & Firth, W. (1993). Switching dynamics of spatial solitary wave pixels. Journal of the Optical Society of America B, 10(6), 1081-1089. https://doi.org/10.1364/JOSAB.10.001081

Separatrices and scaling laws in the switching dynamics of spatial solitary wave pixels are investigated. We show that the dynamics in the full model are similar to those in the plane-wave limit. Switching features may be indicated and explained by t... Read More about Switching dynamics of spatial solitary wave pixels.

Predicting theater chair absorption from reverberation chamber measurements - comment (1993)
Journal Article
Davies, W., Lam, Y., & Orlowski, R. (1993). Predicting theater chair absorption from reverberation chamber measurements - comment. ˜The œJournal of the Acoustical Society of America (Online), 93(4), 2238-2240. https://doi.org/10.1121/1.406687

The relationship between the measured acoustic absorption coefficient of an array of theater chairs and the ratio of the perimeter length to plan area of the array is considered. It is shown that the linear relationship measured by Bradley in a rever... Read More about Predicting theater chair absorption from reverberation chamber measurements - comment.

Self-sustained modelocking using induced nonlinear birefringence in optical fibres (1993)
Journal Article
Langridge, P., Mcdonald, G., Firth, W., & Wabnitz, S. (1993). Self-sustained modelocking using induced nonlinear birefringence in optical fibres. Optics Communications, 97(3-4), 178-182. https://doi.org/10.1016/0030-4018%2893%2990136-S

A numerical study of self-sustained mode locking due to optically induced nonlinear birefringence is presented. The model incorporates a polarizer, a gain medium, a half-wave plate and a single-mode passive fibre in a ring cavity configuration. The... Read More about Self-sustained modelocking using induced nonlinear birefringence in optical fibres.

Dark spatial soliton break-up in the transverse plane (1993)
Journal Article
Mcdonald, G., Syed, K., & Firth, W. (1993). Dark spatial soliton break-up in the transverse plane. Optics Communications, 95(4-6), 281-288. https://doi.org/10.1016/0030-4018%2893%2990679-Y

We report on numerical simulations investigating the instabilities which arise when dark soliton solutions of the two-dimensional (2D) nonlinear Schrödinger equation are allowed to propagate in a 3D self-defocussing medium. Firstly, propagation of fu... Read More about Dark spatial soliton break-up in the transverse plane.

Spatial grid symmetries and reduced models in the simulation of beam counterpropagation in a nonlinear medium (1993)
Journal Article
Mcdonald, G., & Firth, W. (1993). Spatial grid symmetries and reduced models in the simulation of beam counterpropagation in a nonlinear medium. Journal of Modern Optics, 40(1), 23-32. https://doi.org/10.1080/09500349314550041

In the context of the nonlinear interaction of counterpropagating light beams, we demonstrate the unrealistic symmetries that arise in the simulation of spontaneous pattern formation when using square computational grids. We have formulated a general... Read More about Spatial grid symmetries and reduced models in the simulation of beam counterpropagation in a nonlinear medium.

The sensitivity of listeners to early sound field changes in auditoriums (1993)
Journal Article
Cox, T., Davies, W., & Lam, Y. (1993). The sensitivity of listeners to early sound field changes in auditoriums. Acta acustica united with Acustica, 79(1), 27-41

The sensitivity of listeners to small changes in the early sound field of auditoria has been measured. This was done using a realistic artificial simulation system of a concert ball sound field. The simulation system was designed so that standard obj... Read More about The sensitivity of listeners to early sound field changes in auditoriums.

Optical vortices in beam propagation through a self-defocussing medium (1992)
Journal Article
Mcdonald, G., Syed, K., & Firth, W. (1992). Optical vortices in beam propagation through a self-defocussing medium. Optics Communications, 94(5), 469-476. https://doi.org/10.1016/0030-4018%2892%2990589-J

We present numerical simulations and analysis of optical vortex propagation in a 3D self-defocussing medium. On plane wave background initial conditions composed of points and lines of phase discontinuity are shown, in some cases, to evolve towards a... Read More about Optical vortices in beam propagation through a self-defocussing medium.