Teratosphaeria destructans and T. viscida are serious pathogens causing leaf, bud and shoot blight diseases of Eucalyptus plantations in the subtropics and tropics of South-East Asia (T. destructans) and North Queensland, Australia (T. viscida). During disease surveys in northern Western Australia and the Northern Territory of Australia, symptoms resembling those of T. destructans were observed...

In order to make progress on Intelligent Tutoring in ill-defined domains it is helpful to start with a definition. In this paper we consider the existing definitions and select one for the basis of our discussion. We then summarize some of the more salient characteristics of ill-defined domains from a tutoring standpoint and some human and ITS strategies that have been employed to cope with the...

Observation of a clinical event can spur reflective thinking on its source. In pharmacology, adverse events are examples of observations for which deriving the cause is important. Moving from observation to mechanistic understanding requires the use of tools that explicitly delineate biological systems, mode of action, and disease pathophysiology. By expanding understanding of biological factor...

Rhizophoramucronatavar.alokii (Rhizophoraceae), a new variety of Rhizophora from the Andaman and Nicobar Islands, India, is described and illustrated. The new variety is remarkable in having four stamens, laterally folded leaves, a short peduncle, thick leathery petals, and a four-sided ovary with a sessile style. A key for the species of Rhizophora of the Andaman and Nicobar Islands is also pr...

Despite its pedagogical predominance during the last four decades, marketing scholars increasingly doubt the value of the 4Ps schema. As a prelude to a new precursory structural framework for marketing management, criticisms and previously proposed modifications of the 4Ps are reviewed briefly. Next, the basic premise of Hunt’s four explananda of marketing theory–that exchange is the core conce...

Sixty-five years after Turing first revealed the potential of systems with local activation and long-range inhibition to generate pattern, we have only recently begun to identify the biological elements that operate at many scales to generate periodic patterns in nature. In this Primer, we first review the theoretical framework provided by Turing, Meinhardt, and others that suggests how periodi...

National efforts to greatly reduce the number of uninsured Americans have made little progress for decades because achieving majority support for any one approach has proved to be impossible. While as authors we remain unreconciled on the best solution, we share the belief that federally supported state experimentation is a promising way to make progress. States should be allowed to try widely ...

can attend an English school in some of their spare hours, and many of them do so ; but the greater number either learn English of their own accord before entering the college, or acquire it after passing their examination. The recent substantial advantages for the acquirement of such knowledge will, no doubt, spur the young hands ; and in future we expect very few men of this class will pass i...

Climate researchers are bouncing back in spite of fresh criticism of the IPCC management and are looking to understand catastrophic individual events.