Griffith University

About: Griffith University is a education organization based out in Brisbane, Queensland, Australia. It is known for research contribution in the topics: Population & Poison control. The organization has 13830 authors who have published 49318 publications receiving 1420865 citations.

Landmarks revisited

Abstract: Landmarks for propositional planning tasks are variable assignments that must occur at some point in every solution plan. We propose a novel approach for using landmarks in planning by deriving a pseudo-heuristic and combining it with other heuristics in a search framework. The incorporation of landmark information is shown to improve success rates and solution qualities of a heuristic planner. We furthermore show how additional landmarks and orderings can be found using the information present in multi-valued state variable representations of planning tasks. Compared to previously published approaches, our landmark extraction algorithm provides stronger guarantees of correctness for the generated landmark orderings, and our novel use of landmarks during search solves more planning tasks and delivers considerably better solutions.

Application of the finite element method in dental implant research

Abstract: This article provides a review of the achievements and advancements in dental technology brought about by computer-aided design and the all powerful finite element method (FEM) of analysis. The scope of the review covers dental implants, jawbone surrounding the implant and the biomechanical implant and jawbone interaction. Prevailing assumptions made in the published finite element analysis (FEA) and their limitations are discussed in some detail which helps identify the gaps in research as well as future research direction.

Bacterial biopolymers: from pathogenesis to advanced materials.

Abstract: Bacteria are prime cell factories that can efficiently convert carbon and nitrogen sources into a large diversity of intracellular and extracellular biopolymers, such as polysaccharides, polyamides, polyesters, polyphosphates, extracellular DNA and proteinaceous components. Bacterial polymers have important roles in pathogenicity, and their varied chemical and material properties make them suitable for medical and industrial applications. The same biopolymers when produced by pathogenic bacteria function as major virulence factors, whereas when they are produced by non-pathogenic bacteria, they become food ingredients or biomaterials. Interdisciplinary research has shed light on the molecular mechanisms of bacterial polymer synthesis, identified new targets for antibacterial drugs and informed synthetic biology approaches to design and manufacture innovative materials. This Review summarizes the role of bacterial polymers in pathogenesis, their synthesis and their material properties as well as approaches to design cell factories for production of tailor-made bio-based materials suitable for high-value applications.

Financial markets: a tool for social responsibility?

Abstract: Objectives of socially responsible investment (SRI) are discussed with reference to the two main mechanisms of the SRI ‘movement’: shareholder advocacy and managed investments. We argue that in their current forms, both mechanisms lack the power to create significant corporate change. Shareholder advocacy has been largely unsuccessful to date. Even if resolutions were successful, shareholder advocacy may still be ineffective if underlying economic opportunities remain. Marketing material and investment prospectuses issued by socially responsible mutual funds (SRI funds) commonly contain the claim that, by affecting corporations' access to capital funding, SRI funds can change corporate practices. This paper makes a contribution by presenting the market share of SRI funds in the regions where they are most developed, being Europe, the U.S. and Australia, to show that this claim is unlikely to eventuate. SRI funds also commonly claim that they will outperform conventional active mutual funds. That the economic performances of both are similar might be explained by their similar portfolio compositions. The paper makes an innovation in the SRI literature by adopting a legitimacy framework to explain the continued presence of SRI funds. To achieve desired social and environmental outcomes, SRI funds are urged to address issues at a more systemic level. A suggested mechanism is the collective lobbying of corporations and, especially, governments.