Institution
Australian National University
Education•Canberra, Australian Capital Territory, Australia•
About: Australian National University is a education organization based out in Canberra, Australian Capital Territory, Australia. It is known for research contribution in the topics: Population & Galaxy. The organization has 34419 authors who have published 109261 publications receiving 4315448 citations. The organization is also known as: The Australian National University & ANU.
Topics: Population, Galaxy, Context (language use), Politics, Stars
Papers published on a yearly basis
Papers
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TL;DR: In this paper, the authors report the identification of 17 star systems, each with one or more characteristics indicative of extreme youth, that are moving through space together with β Pictoris.
Abstract: Following the 1983 IRAS detection and subsequent imaging of its extensive dusty circumstellar disk, β Pictoris became the prototypical and most studied example of a potential forming planetary system. Here we report the identification of 17 star systems, each with one or more characteristics indicative of extreme youth, that are moving through space together with β Pic. This diverse set of ~12 million yr old star systems, which includes a ~35 Jupiter mass brown dwarf, and a wide assortment of dusty circumstellar disks, is the comoving, youthful group closest to Earth. Their unique combination of youth and proximity to Earth makes group members—many of which have masses similar to that of the Sun—prime candidates for imaging of warm planets and dusty circumstellar disks with ground- and space-based telescopes.
500 citations
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University of Birmingham1, University of Victoria2, Australian National University3, University of Freiburg4, Uppsala University5, Wageningen University and Research Centre6, University of Oslo7, Princeton University8, University of Nebraska–Lincoln9, Vrije Universiteit Brussel10, University of Bristol11
TL;DR: In this human-influenced era, we need to rethink the concept of "drought" to include the human role in mitigating and enhancing drought as mentioned in this paper, which is not fully understood.
Abstract: Drought management is inefficient because feedbacks between drought and people are not fully understood. In this human-influenced era, we need to rethink the concept of drought to include the human role in mitigating and enhancing drought.
499 citations
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TL;DR: The parameters in greatest need of additional measurements are S(c), mesophyll cell wall thickness, and the permeabilities of the plasma membrane and chloroplast envelope.
Abstract: CO2 faces a series of resistances while diffusing between the substomatal cavities and the sites of carboxylation within chloroplasts. The absence of techniques to measure the resistance of individual steps makes it difficult to define their relative importance. Resistance to diffusion through intercellular airspace differs between leaves, but is usually of minor importance. Leaves with high photosynthetic capacity per unit leaf area reduce mesophyll resistance by increasing the surface area of chloroplasts exposed to intercellular airspace per unit leaf area, Sc. Cell walls impose a significant resistance. Assuming an effective porosity of the cell wall of 0.1 or 0.05, then cell walls could account for 25% or 50% of the total mesophyll resistance, respectively. Since the fraction of apoplastic water that is unbound and available for unhindered CO2 diffusion is unknown, it is possible that the effective porosity is 50% of the total resistance and a variable proportion. Most of the remaining resistance is imposed by one or more of the three membranes as mesophyll resistance can be altered by varying the expression of cooporins. The CO2 permeability of vesicles prepared from chloroplast envelopes has been reduced by RNA interference (RNAi) expression of NtAQP1, but not those prepared from the plasma membrane. Carbonic anhydrase activity also influences mesophyll resistance. Mesophyll resistance is relatively insensitive to the manipulation of any step in the pathway because it represents only part of the total and may also be countered by pleiotropic compensatory changes. The parameters in greatest need of additional measurements are Sc, mesophyll cell wall thickness, and the permeabilities of the plasma membrane and chloroplast envelope.
498 citations
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TL;DR: This article propose an alternative argument for representation that builds on the broader interpretation of rational actor political theory, an interpretation that emphasizes expressive considerations relative to instrumental considerations, and operates in a richer motivational setting.
Abstract: An essential feature of political representation is that a mediating assembly is set between the citizenry and political decision making. Representation involves indirect decision making or agency. Rational actor political theory often assumes representation in order to focus on problems of a principal–agent kind, but offers only relatively weak arguments for representation. We offer an alternative argument for representation that builds on our broader interpretation of rational actor political theory – an interpretation that emphasizes expressive considerations relative to instrumental considerations, and operates in a richer motivational setting. As well as providing an account of representation, we believe that our approach is capable of re-connecting rational actor political theory to many of the concerns of more traditional political theory.
498 citations
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TL;DR: Gross domestic product (GDP) is a misleading measure of national success as discussed by the authors, and countries should act now to embrace new metrics, urge Robert Costanza and colleagues, and they do not.
Abstract: Gross domestic product is a misleading measure of national success. Countries should act now to embrace new metrics, urge Robert Costanza and colleagues.
498 citations
Authors
Showing all 34925 results
Name | H-index | Papers | Citations |
---|---|---|---|
Cyrus Cooper | 204 | 1869 | 206782 |
Nicholas G. Martin | 192 | 1770 | 161952 |
David R. Williams | 178 | 2034 | 138789 |
Krzysztof Matyjaszewski | 169 | 1431 | 128585 |
Anton M. Koekemoer | 168 | 1127 | 106796 |
Robert G. Webster | 158 | 843 | 90776 |
Ashok Kumar | 151 | 5654 | 164086 |
Andrew White | 149 | 1494 | 113874 |
Bernhard Schölkopf | 148 | 1092 | 149492 |
Paul Mitchell | 146 | 1378 | 95659 |
Liming Dai | 141 | 781 | 82937 |
Thomas J. Smith | 140 | 1775 | 113919 |
Michael J. Keating | 140 | 1169 | 76353 |
Joss Bland-Hawthorn | 136 | 1114 | 77593 |
Harold A. Mooney | 135 | 450 | 100404 |