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Non-paraxial solitons (1998)
Journal Article
Chamorro-Posada, P., Mcdonald, G., & New, G. (1998). Non-paraxial solitons. Journal of Modern Optics, 45(6), 1111-1121. https://doi.org/10.1080/09500349808230902

In this paper, we propose the use of ultranarrow soliton beams in miniaturized nonlinear optical devices. We derive a nonparaxial nonlinear Schrödinger equation and show that it has an exact non-paraxial soliton solution from which the paraxial solit... Read More about Non-paraxial solitons.

Nonlinear competing processes in multifrequency Raman generation (1998)
Journal Article
Mcdonald, G., Chan, Y., New, G., Losev, L., & Lutsenko, A. (1998). Nonlinear competing processes in multifrequency Raman generation. Journal of Modern Optics, 45(6), 1099-1110. https://doi.org/10.1080/09500349808230901

We investigate the extent to which the Raman generation of ultrabroad-band light will be affected by nonlinear competing processes. The model equations are generalized to incorporate an off-axis competing signal and a quantitative study is undertaken... Read More about Nonlinear competing processes in multifrequency Raman generation.

Page segmentation using the description of the background (1998)
Journal Article
Antonacopoulos, A. (1998). Page segmentation using the description of the background. Computer Vision and Image Understanding, 70(3), 350-369. https://doi.org/10.1006/cviu.1998.0691

There is an ever increasing number of publications which do not have the “traditional” layout where printed regions are rectangu- lar. Text paragraphs and areas of graphic type may be of any shape, individually rotated and in any arrangement. Previou... Read More about Page segmentation using the description of the background.

Iron Age and Romano-British rural settlement in North West England (1998)
Journal Article
Nevell, M. (1998). Iron Age and Romano-British rural settlement in North West England. Archaeology north west, 3(13), 14-26

This paper reviews the archaeology for Romano-British rural settlement in the southern part of North West England (the Cheshire, Merseyside and Greater Manchester area). It looks at the influence of climate and social structure on the distribtion and... Read More about Iron Age and Romano-British rural settlement in North West England.

Introduction: Models, theory and marginality in Roman archaeology (1998)
Journal Article
Nevell, M., & Walker, J. (1998). Introduction: Models, theory and marginality in Roman archaeology. Archaeology north west, 3(13), 9-12

Monograph introduction that looks at the role of theories of marginality (cultural, environmental, and political) in studying the Romano-British landscape of frontier areas, in particular that in North West England.

Protein and cell engineering of components of the human receptor/effector system : applications for therapy and diagnosis (1998)
Journal Article
Helm, B., Sayers, I., Swann, J., Smyth, L., Cain, S., Suter, M., …Padlan, E. (1998). Protein and cell engineering of components of the human receptor/effector system : applications for therapy and diagnosis. Technology and Health Care, 6(2-3), 195-207

Adaptive immune responses characterised by the synthesis of antibodies of the immunoglobulin E (IgE) isotype play an important role in type I hypersensitivity disorders and parasitic infestations, diseases which have an significant socio-economic imp... Read More about Protein and cell engineering of components of the human receptor/effector system : applications for therapy and diagnosis.

Pits versus patterns: effects of transponders on recapture rate and body condition of Danube crested newts (Triturus Dobrogicus) and common spadefoot toads (Pelobates Fuscus) (1998)
Journal Article
Dobrogicus) and common spadefoot toads (Pelobates Fuscus). Herpetological journal, 8, 181-186

During a long-terrn study (1987-1996) near Vienna (Austria), individual Danube crested newts (Trititrus dobrogicus) and cornmon spadefoot toads (Pelobates fuscus) were registered by photographs of highly variable Skin patterns, and the implantation... Read More about Pits versus patterns: effects of transponders on recapture rate and body condition of Danube crested newts (Triturus Dobrogicus) and common spadefoot toads (Pelobates Fuscus).

Rare hybridization and introgression in smooth and palmate newts (Salamandridae: Triturus vulgaris and T. helveticus) (1998)
Journal Article
Triturus vulgaris and T. helveticus). Journal of Zoological Systematics and Evolutionary Research, 36, 111-122

This paper describes the occurrence of hybridization and introgression in two species of amphibians (the newts Trifurus helrelicus and Trirurus culgaris) in mid-Wales, northern France and western France. A single aberrant adult male with intermediat... Read More about Rare hybridization and introgression in smooth and palmate newts (Salamandridae: Triturus vulgaris and T. helveticus).

Graded call variation in male Asian cricket frogs (Rana nicobariensis) (1998)
Journal Article
Jehle, R., & Arak, A. (1998). Graded call variation in male Asian cricket frogs (Rana nicobariensis). Bioacoustics, 9, 35-48

We describe the vocal repertoire of the Asian cricket frog Rana nicobariensis for the first time. Three structurally-distinct call types exist: advertisement calls, aggressive calls and encounter calls. Compound calls consisting of both advertisement... Read More about Graded call variation in male Asian cricket frogs (Rana nicobariensis).

Attitude of zoo visitors to the idea of feeding live prey to zoo animals (1997)
Journal Article
Ings, R., Waran, N., & Young, R. (1997). Attitude of zoo visitors to the idea of feeding live prey to zoo animals. Zoo Biology, 16(4), 343-347. https://doi.org/10.1002/%28SICI%291098-2361%281997%2916%3A4%3C343%3A%3AAID-ZOO6%3E3.0.CO%3B2-A

Two hundred UK zoo visitors were asked about their attitudes regarding the feeding of live prey to zoo animals. All visitors agreed with live insects being fed to lizards, providing it was done off-exhibit, and only 4% objected if done on-exhibit. Se... Read More about Attitude of zoo visitors to the idea of feeding live prey to zoo animals.

The effects of physical characteristics of the environment and feeding regime on the behavior of captive felids (1997)
Journal Article
Lyons, J., Young, R., & Deag, J. (1997). The effects of physical characteristics of the environment and feeding regime on the behavior of captive felids. Zoo Biology, 16(1), 71-83. https://doi.org/10.1002/%28SICI%291098-2361%281997%2916%3A1%3C71%3A%3AAID-ZOO8%3E3.0.CO%3B2-8

The behavior of captive felids is influenced by enclosure design and management regime. The behavior of nine felid species housed in 11 enclosures was recorded using instantaneous scan sampling. Stereotypic pacing was observed in 15 out of 19 individ... Read More about The effects of physical characteristics of the environment and feeding regime on the behavior of captive felids.

Effects of foraging enrichment on the behaviour of parrots (1997)
Journal Article
Coulton, L., Waran, N., & Young, R. (1997). Effects of foraging enrichment on the behaviour of parrots. Animal Welfare Journal, 6(4), 357-363. https://doi.org/10.1017/S0962728600020066

The purpose of this study was to enrich parrot enclosures by creating foraging opportunities appropriate for the species and to investigate the possible preference for a variable versus a constant food supply. The foraging device comprised of a lengt... Read More about Effects of foraging enrichment on the behaviour of parrots.

On the generation of ultra-broad bandwidth light in air at atmospheric pressure (1997)
Journal Article
atmospheric pressure. Journal of Physics B: Atomic, Molecular and Optical Physics, 30(21), L719-L725. https://doi.org/10.1088/0953-4075/30/21/002

We predict that ultra-broadband light consisting of over 150 distinct frequencies of comparable energy can be generated in air at atmospheric pressure by stimulated Raman scattering using resonant symmetric pumping. Nanosecond input pulses and the hi... Read More about On the generation of ultra-broad bandwidth light in air at atmospheric pressure.

Preserving methodological consistency, a reply to Raftery, McGeorge and Walters (1997)
Journal Article
Rooke, J., Seymour, D., & Crook, D. (1997). Preserving methodological consistency, a reply to Raftery, McGeorge and Walters. Construction Management and Economics, 15(5), 491-494. https://doi.org/10.1080/014461997372845

Raftery, J., McGeorge, D. and Walters, M. (1977) Construction Management and Economics, 15(3), 291-297, criticise Seymour, D.E. and Rooke, J.A. (1995) Construction Management and Economics 13(6), 511-523 for setting out battle lines in their use of t... Read More about Preserving methodological consistency, a reply to Raftery, McGeorge and Walters.

Developing a more empirical approach to culture, attitude and motivation in construction management research: a critique and a proposal (1997)
Journal Article
Rooke, J. (1997). Developing a more empirical approach to culture, attitude and motivation in construction management research: a critique and a proposal. Journal of construction procurement, 3(2),

This paper addresses the problem of achieving adequate empirical accounts of culture, motivation and attitudes in construction management research. The usual association of adequacy with objectivity, causality and quantification is criticised and it... Read More about Developing a more empirical approach to culture, attitude and motivation in construction management research: a critique and a proposal.

Effect of wood-pile feeders on the behaviour of captive bush dogs (Speothos venaticus) (1997)
Journal Article
Ings, R., Waran, N., & Young, R. (1997). Effect of wood-pile feeders on the behaviour of captive bush dogs (Speothos venaticus). Animal Welfare Journal, 6(2), 145-152. https://doi.org/10.1017/S0962728600019618

The influence of an environmental enrichment programme on the searching behaviour of separate groups of male and female bush dogs at Edinburgh Zoo was evaluated. The enrichment programme involved hiding food in specially constructed wood-piles and ot... Read More about Effect of wood-pile feeders on the behaviour of captive bush dogs (Speothos venaticus).

Optimization of intersubband resonant second-order susceptibility in asymmetric graded AlxGa1-xAs quantum wells using supersymmetric quantum mechanics (1997)
Journal Article
Tomic, S., Milanović, V., & Ikonić, Z. (1997). Optimization of intersubband resonant second-order susceptibility in asymmetric graded AlxGa1-xAs quantum wells using supersymmetric quantum mechanics. Physical Review B (Condensed Matter), 56(3), 1033-1036. https://doi.org/10.1103/PhysRevB.56.1033

A systematic procedure is proposed for the design of ternary alloys based quantum-well structures optimized for double-resonance second-harmonic generation. The method relies on the supersymmetric quantum mechanics as derived here for the case of pos... Read More about Optimization of intersubband resonant second-order susceptibility in asymmetric graded AlxGa1-xAs quantum wells using supersymmetric quantum mechanics.