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2. Ground-state energy estimation of the water molecule on a trapped ion quantum computer

Author

Nam, Yunseong, Chen, Jwo-Sy, Pisenti, Neal C., Wright, Kenneth, Delaney, Conor, Maslov, Dmitri, Brown, Kenneth R., Allen, Stewart, Amini, Jason M., Apisdorf, Joel, Beck, Kristin M., Blinov, Aleksey, Chaplin, Vandiver, Chmielewski, Mika, Collins, Coleman, Debnath, Shantanu, Ducore, Andrew M., Hudek, Kai M., Keesan, Matthew, Kreikemeier, Sarah M., Mizrahi, Jonathan, Solomon, Phil, Williams, Mike, Wong-Campos, Jaime David, Monroe, Christopher, and Kim, Jungsang

Subjects
Quantum Physics, Computer Science - Emerging Technologies
Abstract

Quantum computing leverages the quantum resources of superposition and entanglement to efficiently solve computational problems considered intractable for classical computers. Examples include calculating molecular and nuclear structure, simulating strongly-interacting electron systems, and modeling aspects of material function. While substantial theoretical advances have been made in mapping these problems to quantum algorithms, there remains a large gap between the resource requirements for solving such problems and the capabilities of currently available quantum hardware. Bridging this gap will require a co-design approach, where the expression of algorithms is developed in conjunction with the hardware itself to optimize execution. Here, we describe a scalable co-design framework for solving chemistry problems on a trapped ion quantum computer, and apply it to compute the ground-state energy of the water molecule. The robust operation of the trapped ion quantum computer yields energy estimates with errors approaching the chemical accuracy, which is the target threshold necessary for predicting the rates of chemical reaction dynamics., Comment: 14 pages, 7 figures

Published
2019

3. Priorities for Wind-Waves Research

Author

Greenslade, Diana, Hemer, Mark, Babanin, Alex, Lowe, Ryan, Turner, Ian, Power, Hannah, Young, Ian, Ierodiaconou, Daniel, Hibbert, Greg, Williams, Greg, Aijaz, Saima, Albuquerque, João, Allen, Stewart, Banner, Michael, Branson, Paul, Buchan, Steve, Burton, Andrew, Bye, John, Cartwright, Nick, Chabchoub, Amin, Colberg, Frank, Contardo, Stephanie, Dufois, Francois, Earl-Spurr, Craig, Farr, David, Goodwin, Ian, Gunson, Jim, Hansen, Jeff, Hanslow, David, Harley, Mitchell, Hetzel, Yasha, Hoeke, Ron, Jones, Nicole, Kinsela, Michael, Liu, Qingxiang, Makarynskyy, Oleg, Marcollo, Hayden, Mazaheri, Said, McConochie, Jason, Millar, Grant, Moltmann, Tim, Moodie, Neal, Morim, Joao, Morison, Russel, Orszaghova, Jana, Pattiaratchi, Charitha, Pomeroy, Andrew, Proctor, Roger, Provis, David, Reef, Ruth, Rijnsdorp, Dirk, Rutherford, Martin, Schulz, Eric, Shayer, Jake, Splinter, Kristen, Steinberg, Craig, Strauss, Darrell, Stuart, Greg, Symonds, Graham, Tarbath, Karina, Taylor, Daniel, Taylor, James, Thotagamuwage, Darshani, Toffoli, Alessandro, Valizadeh, Alireza, van Hazel, Jonathan, da Silva, Guilherme Vieira, Wandres, Moritz, Whittaker, Colin, Williams, David, Winter, Gundula, Xu, Jiangtao, Zhong, Aihong, and Zieger, Stefan

Published
2020

4. 15 Priorities for Wind-Waves Research : An Australian Perspective

Author

Greenslade, Diana, Hemer, Mark, Babanin, Alex, Lowe, Ryan, Turner, Ian, Power, Hannah, Young, Ian, Ierodiaconou, Daniel, Hibbert, Greg, Williams, Greg, Aijaz, Saima, Albuquerque, João, Allen, Stewart, Banner, Michael, Branson, Paul, Buchan, Steve, Burton, Andrew, Bye, John, Cartwright, Nick, Chabchoub, Amin, Colberg, Frank, Contardo, Stephanie, Dufois, Francois, Earl-Spurr, Craig, Farr, David, Goodwin, Ian, Gunson, Jim, Hansen, Jeff, Hanslow, David, Harley, Mitchell, Hetzel, Yasha, Hoeke, Ron, Jones, Nicole, Kinsela, Michael, Liu, Qingxiang, Makarynskyy, Oleg, Marcollo, Hayden, Mazaheri, Said, McConochie, Jason, Millar, Grant, Moltmann, Tim, Moodie, Neal, Morim, Joao, Morison, Russel, Orszaghova, Jana, Pattiaratchi, Charitha, Pomeroy, Andrew, Proctor, Roger, Provis, David, Reef, Ruth, Rijnsdorp, Dirk, Rutherford, Martin, Schulz, Eric, Shayer, Jake, Splinter, Kristen, Steinberg, Craig, Strauss, Darrell, Stuart, Greg, Symonds, Graham, Tarbath, Karina, Taylor, Daniel, Taylor, James, Thotagamuwage, Darshani, Toffoli, Alessandro, Valizadeh, Alireza, van Hazel, Jonathan, da Silva, Guilherme Vieira, Wandres, Moritz, Whittaker, Colin, Williams, David, Winter, Gundula, Xu, Jiangtao, Zhong, Aihong, and Zieger, Stefan

Published
2020

6. Ten quick tips for deep learning in biology.

Author

Benjamin D. Lee, Anthony Gitter, Casey S. Greene, Sebastian Raschka, Finlay Maguire, Alexander J. Titus, Michael D. Kessler, Alexandra J. Lee, Marc G. Chevrette, Paul Allen Stewart, Thiago Britto-Borges, Evan M. Cofer, Kun-Hsing Yu, Juan Jose Carmona, Elana J. Fertig, Alexandr A. Kalinin, Brandon Signal, Benjamin J. Lengerich, Timothy J. Triche Jr., and Simina M. Boca

Published
2022
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8. Ten Quick Tips for Deep Learning in Biology.

Author

Benjamin D. Lee, Anthony Gitter, Casey S. Greene, Sebastian Raschka, Finlay Maguire, Alexander J. Titus, Michael D. Kessler, Alexandra J. Lee, Marc G. Chevrette, Paul Allen Stewart, Thiago Britto-Borges, Evan M. Cofer, Kun-Hsing Yu, Juan Jose Carmona, Elana J. Fertig, Alexandr A. Kalinin, Beth Signal, Benjamin J. Lengerich, Timothy J. Triche Jr., and Simina M. Boca

Published
2021

9. Spectacles of development : the materiality of success at the Barefoot College, Rajasthan

Author

Allen, Stewart, Bray, Francesca, Cross, Jamie, and Thin, Neil

Subjects
Materiality of Success, Barefoot College, Rajasthan, non-governmental development organisation, Barefoot Solar Engineers, Debord
Abstract

Through an ethnographic study of the 'Barefoot College', an internationally renowned non¬ governmental development organisation (NGO) situated in Rajasthan, India, this thesis investigates the methods and practices by which a development organisation materialises and manages a construction of success. In this conceptualisation, success is not an output of good development practice, but is rather a socially and materially generated construction sustained via robust interpretations, mobilised meanings, and strong networks of support. This thesis pays particular attention to the material processes by which success is achieved and the different meanings and discourses that they act to perform. Attending to the different ways in which success is produced in development, from locally produced assemblages, to regional and global deployments of application, reminds us that knowledge forms are never fixed, but are rather contingent upon the materials, locations, and persons that conceive and comprise them. How the Barefoot College achieves its success over time and circumstance is the subject of this thesis. Drawing upon Debord's (1967) notion of'spectacle', I argue that the College, as a prolific producer of various forms of development media, achieves its success firstly through materially mediated heterotopic spectacles-, enacted and imperfect Utopias that constitute the desires, imaginings and Otherness of its society; and secondly through the ignorance that these spectacles generate: constructed spaces of silence and invisibility that serve to reify this theatre of dreams. With a particular focus on its community-managed, solar photovoltaic development programme, one that trains illiterate women from countries across Africa and beyond as 'Barefoot Solar Engineers' (BSEs), this thesis analyses firstly how heterotopic spectacles are produced, the machinations, strategies, persons and materialities involved in development work (e.g. material props, stage sets,' rehearsals, and embodied training); and secondly, what makes it successful, what kinds of ideas, visions, and discourses do these persons and materialities draw upon (and help augment) to account for its growth from small-scale, rural experiment in skills-training to celebrated, globalised development model. The chapters that follow consider different scenarios through which success was realised at the College. They embrace diverse yet interconnected themes relating to the temporality of development success over decades of societal change; constructions, concealments, and silences of knowledge claims as they are enacted through an architectural awards controversy; the performance of notions of development, enlightenment and the formation of the state via technology and energy; a discussion of how donors and supporters are enrolled in a development programme through material acts of 'witnessing'; an exploration and critique of technologically mediated 'empowerment'-related agendas; and finally, an examination of how success was generated via processes of replication.

Published
2013
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11. Ground-state energy estimation of the water molecule on a trapped-ion quantum computer

Author

Nam, Yunseong, Chen, Jwo-Sy, Pisenti, Neal C., Wright, Kenneth, Delaney, Conor, Maslov, Dmitri, Brown, Kenneth R., Allen, Stewart, Amini, Jason M., Apisdorf, Joel, Beck, Kristin M., Blinov, Aleksey, Chaplin, Vandiver, Chmielewski, Mika, Collins, Coleman, Debnath, Shantanu, Hudek, Kai M., Ducore, Andrew M., Keesan, Matthew, Kreikemeier, Sarah M., Mizrahi, Jonathan, Solomon, Phil, Williams, Mike, Wong-Campos, Jaime David, Moehring, David, Monroe, Christopher, and Kim, Jungsang

Published
2020
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27. The OceanMAPS v4 sea-ice forecast demonstration project mk 2

Author

Allen, Stewart C. R., Brassington, Gary B., Sakov, Pavel, Lieser, Jan L., Beggs, Helen, Beckett, Duan, and Fiedler, Russell

Subjects
sea-ice modelling, ocean modelling, coupled modelling, data assimilation
Abstract

Presentation given at the IICWG11th International Workshop on Sea Ice Modelling, Assimilation, Observations, Predictions and Verification, 21-23 March 2023 in Oslo, Norway

Published
2023
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28. Impacts of Climate Change on Human uses of the Ocean and Ocean Services

Author

Himes-Cornell, Amber, Allen, Stewart, Auad, Guillermo, Boatman, Mary, Clay, Patricia M., Herrick, Sam, Kotowicz, Dawn, Little, Peter, Lopez, Cary, Loring, Phil, Niemeier, Paul, Norman, Karma, Pfeiffer, Lisa, Plummer, Mark, Rust, Michael, Singer, Merrill, Speirs, Cameron, Griffis, Roger, editor, and Howard, Jennifer, editor

Published
2013
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38. Carving a Niche or Cutting a Broad Swath: Subsistence Fishing in the Western Pacific

Author

Allen, Stewart

Subjects
Fisheries -- Management, Environmental sustainability -- Management, Fish industry -- Management, Niche (Ecology) -- Research, Company business management, Earth sciences, Science and technology
Abstract

Fish stocks in many parts of the western Pacific are increasingly being subjected to a variety of environmental and human pressures. Resource managers are responding to the situation by limiting and allocating catch across the various fisheries. There is a corresponding need to appropriately classify fishers and fishing fleets to ensure that all sectors are fairly considered when catch allocation decisions are undertaken in the region. But discrete classification of small-scale fishing sectors is challenging because commercial, recreational, and food-gathering motives often overlap. Moreover, despite the known importance of small-scale fishing in the western Pacific, the manner and extent of such activities are not well understood or thoroughly documented. This paper seeks to elucidate the nature of subsistence or consumption-oriented fishing and its relationship to other forms of small-scale fishing activities in the region. A conceptual framework of potential utility for assessing the degree to which small-scale operations are moving toward or away from subsistence fishing is developed with the intent of optimizing the resource allocation decision-making process. The discussion is based on review of pertinent literature and on findings from research recently conducted in Hawai'i and the Commonwealth of the Northern Mariana Islands., SUBSISTENCE OR consumption-oriented fishing is a topic of growing interest to fishery managers working in island settings across the western Pacific (here defined as including Hawai'i, Guam, American Samoa, and [...]

Published
2013
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41. A potential vorticity perspective on Southern Hemisphere blocking dynamics

Author

Allen, Stewart C. R.

Subjects
ComputingMilieux_COMPUTERSANDEDUCATION, ComputerApplications_COMPUTERSINOTHERSYSTEMS, Uncategorized
Abstract

This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.

Published
2021
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46. Dimensions of Group-based Phylogenetic Mixtures

Author

Pamela E. Harris, Colby Long, Ruth Davidson, Allen Stewart, Hector Baños, Robert Walker, Robert Krone, Elizabeth Gross, and Nathaniel Bushek

Subjects
0301 basic medicine, General Mathematics, Immunology, Dimension (graph theory), Markov model, General Biochemistry, Genetics and Molecular Biology, Evolution, Molecular, Combinatorics, Mathematics - Algebraic Geometry, 03 medical and health sciences, 0302 clinical medicine, FOS: Mathematics, Abelian group, Quantitative Biology - Populations and Evolution, Algebraic Geometry (math.AG), Phylogeny, General Environmental Science, Mathematics, Pharmacology, Models, Statistical, Models, Genetic, Group (mathematics), General Neuroscience, Populations and Evolution (q-bio.PE), Computational Biology, Mathematical Concepts, Join (topology), Mixture model, Markov Chains, 030104 developmental biology, Computational Theory and Mathematics, 030220 oncology & carcinogenesis, FOS: Biological sciences, Identifiability, Variety (universal algebra), General Agricultural and Biological Sciences
Abstract

In this paper we study group-based Markov models of evolution and their mixtures. In the algebreo-geometric setting, group-based phylogenetic tree models correspond to toric varieties, while their mixtures correspond to secant and join varieties. Determining properties of these secant and join varieties can aid both in model selection and establishing parameter identifiability. Here we explore the first natural geometric property of these varieties: their dimension. The expected projective dimension of the join variety of a set of varieties is one more than the sum of their dimensions. A join variety that realizes the expected dimension is nondefective. Nondefectiveness is not only interesting from a geometric point-of-view, but has been used to establish combinatorial identifiability for several classes of phylogenetic mixture models. In this paper, we focus on group-based models where the equivalence classes of identified parameters are orbits of a subgroup of the automorphism group of the group defining the model. In particular, we show that, for these group-based models, the variety corresponding to the mixture of $r$ trees with $n$ leaves is nondefective when $n \geq 2r+5$. We also give improved bounds for claw trees and give computational evidence that 2-tree and 3-tree mixtures are nondefective for small~$n$., Comment: 24 pages, 4 figures

Published
2017
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48. Some Basic Principles of Risk Recreation.

Author

Allen, Stewart D.

Abstract

The following pointers are made for agencies providing opportunities for risk-taking recreation: (1) there are individual differences and distinct motivations for various levels of risk expression; (2) actual (objective) risk should be finely calculated; (3) agencies need not necessarily provide actual high-risk activities to satisfy a desire for risk-taking; (4) a given activity will not be evaluated as risky or hazardous by all individuals; (5) individual differences and changes occur as participants become more proficient at an activity; and (6) factors other than the programs, activities, and people may determine the adequacy or success of an adventure program in accomplishing its goals. An analysis of the psychology of risk recreation is presented in this paper prior to the concluding admonitions. (JD)

Published
1979

49. Land Managers' Perceptions of Risk Recreation in the Northern Rockies.

Author

Allen, Stewart D.

Abstract

This survey was conducted to determine the frequency of participation in high-risk recreation activities in the Northern Rocky Mountains and to identify how wildland managers perceive the presence of these sports and the problems associated with them. Managers rated perceived risk, management difficulty, and appropriateness given management objectives and supplied the use levels for each of 23 activities covering a wide range of sports. The result of the survey are presented in tabular form, and the manager's perceptions are discussed and analyzed. (JD)

Published
1979

50. Let's Take a Risk with Adventure Recreation!

Author

Allen, Stewart and Meier, Joel F.

Abstract

Three main concepts relating to risk recreation are: (1) understanding how an individual evaluates a recreational activity; (2) understanding that the reasons individuals initially participate in risk recreation may be different from those which perpetuate participation; and (3) understanding that factors other than the individuals and the activities may affect risk recreation behavior. (JN)

Published
1982

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