Geschichte der Institutionalisierung der Antarktisforschung

Erster Workshop der Action Group ?History of the Institutionalisation of Antarctic Research within SCAR’?, 2./3. Oktober 2005, München     

Point Predictions and the Punctuated Equilibrium Theory: A Data Mining Approach—U.S. Nuclear Policy as Proof of Concept

In Punctuated Equilibrium Theory (PET), information processing under the constraints of limited attention and bounded rationality leads to stick‐slip dynamics in policy outcomes. Empirical work in this field often focuses on the macro level. Using the case of nuclear energy policy in the United States as proof of concept, we demonstrate how decisive budget changes in a specific policy subsystem can be linked to attention of Congress and the president. We utilize a mixed‐methods data‐mining approach: Maximum likelihood estimation is used to analyze the distribution of the nuclear energy RD&D budget. Then attention data of both Congress and the president are structured by means of cluster analysis and principal component analysis. Finally, these data are used in a generalized linear model to predict specific budget shifts. The article is designed as a proof of concept: In the case of nuclear energy policy, we are able to predict budget shifts without violating the assumptions of PET. More importantly: we can demonstrate that attention is not only affecting the final policy outcome but also the corridor of the possible.     

The Voting Rights of Incarcerated Australian Citizens

Drawing on and combining political science and legal frameworks, this article explores the validity of disenfranchising Australian prisoners. The authors examine and critically assess the various arguments used in Australia by both legislators and High Court Justices to defend the practice of disenfranchisement. Such arguments are assessed against liberal democratic principles as well as jurisprudence arising from cases in settings that provide protection for electoral rights in formal charters of rights. The authors show that in settings that entrench voting rights in the Constitution, any infringement attracts strict scrutiny from the courts. Courts insist that any abridgement of voting rights should serve a legitimate government purpose and be proportionate to that purpose. The arguments made for prisoner disenfranchisement by legislators in the Australian context invariably fail both parts of this test.     

Phytolith assaying using a micron-scale electrokinetic sorting ring

A particularly useful indicator of past vegetation are phytoliths, glassy products of plant metabolism which have distinctive size and morphology based on the plant taxa which produced them; however, their analysis is a time-consuming task. Building on investigations into mobilizing and sorting of synthetic polystyrene microspheres using a closed loop rectangular microelectromechanical systems (MEMS) electrokinetic array, we investigate these devices’ utility for sorting natural microparticles. Using phytolith samples extracted from archaeological sediment, we show that closed loop MEMS can separate the glassy bodies from both mineral contaminants and each other. Also, small differences in polarization between the phytoliths cause lateral segregation between particles of different sizes and shapes. This process facilitates manual analysis by providing a motive force to the phytoliths that translates and rotates them, showing different configurations as they are propelled by the MEMS array. The organization of the phytoliths into streams also opens the door to automated analysis using image processing. Phytolith assaying is therefore feasible using a MEMS electrokinetic ring and merits additional research to explore the potential of this innovative approach.