There are two contradictory answers to the question in the title. The first is the good growth hypothesis: economic growth generates higher incomes, which should make people approve of the government. Hence growth generates stability. The second is the destabilizing growth hypothesis: growth generates complex changes in society, and therefore instability. A part of the instability will be polit...

Micro-organisms are capable of producing a range of defence mechanisms, including antibiotics, bacteriocins, lytic agents, protein exotoxins, etc. Such mechanisms have been identified in nearly 99% of studied bacteria. The multiplicity and diversity of bacteriocins and the resultant effects of their interactions with targeted bacteria on microbial ecology has been thoroughly studied and remains...

Models and modelling methods play an essential role in Operational Research and Management Science (OR/MS). This article presents four models which concern how OR/MS employs different modelling methods for different modelling tasks, under different constraints, and for different forms of uncertainty. Two of these “metamodels” concern how OR/MS modelling has been employed in decision support for...

We developed a deductive database system PACADE for analyzing three dimensional and secondary structures of protein. PACADE is equipped with a function to search for similar structures in proteins. Unlike other approaches based on calculation of the inter-atomic root mean square distance, this function is based on logic programming and source level rule rewriting techniques. We describe herein ...

This is one of the first batch in a series called 'Philosophy at Work', designed to show contemporary philosophy being fruitfully applied to practical problems. Mr. Atkinson's first concern is to examine arguments which are commonly used in defence of, and in opposition to, such things as preand extra-marital intercourse, contraception, artificial insemination, divorce, homosexuality. He unrave...

Signal-based induced indirect defence refers to herbivore-induced production of plant volatiles that attract carnivorous natural enemies of herbivores. Relationships between direct and indirect defence strategies were studied using tritrophic systems consisting of six sympatric willow species, willow leaf beetles (Plagiodera versicolora), and their natural predators, ladybeetles (Aiolocaria hex...

Hosts have evolved a diverse range of defence mechanisms in response to challenge by infectious organisms (parasites and pathogens). Whether defence is through avoidance of infection, control of the growth of the parasite once infected, clearance of the infection, tolerance to the disease caused by infection or innate and/or acquired immunity, it will have important implications for the populat...

An NADPH oxidase analogous to that in mammalian phagocytes has been hypothesized to produce reactive oxygen species (ROS) in the plant defence response. A. thaliana contains at least six gp91phox homologues, designated AtrbohA-F (A. thaliana Respiratory Burst Oxidase Homologues), which map to different positions. Transcripts of three of these genes can be detected in healthy plants by RNA gel b...

In order to avoid both starvation and disease, animals must allocate resources between energy reserves and immune defence. We investigate the optimal allocation. We find that animals with low reserves choose to allocate less to defence than animals with higher reserves because when reserves are low it is more important to increase reserves to reduce the risk of starvation in the future. In gene...

OBJECTIVES The aim of the study was to explore the relationship between various areas of self-image and defence mechanisms in adolescents. The study included a division into groups according to whether or not they were receiving psychiatric treatment. METHODS Data were obtained from two groups: a clinical group (30 persons), consisting of adolescent patients of the Adolescent Inpatient Ward o...