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  1. No Access

    Article

    Time-resolved Coulomb collision of single electrons

    A series of recent experiments have shown that collision of ballistic electrons in semiconductors can be used to probe the indistinguishability of single-electron wavepackets. Perhaps surprisingly, their Coulo...

    J. D. Fletcher, W. Park, S. Ryu, P. See, J. P. Griffiths in Nature Nanotechnology (2023)

  2. Article

    Open Access

    Continuous-variable tomography of solitary electrons

    A method for characterising the wave-function of freely-propagating particles would provide a useful tool for develo** quantum-information technologies with single electronic excitations. Previous continuous...

    J. D. Fletcher, N. Johnson, E. Locane, P. See, J. P. Griffiths in Nature Communications (2019)

  3. Chapter and Conference Paper

    Adaptive Instructional Systems and Digital Tutoring

    This paper discusses the application of machine (or artificial) intelligence intended to accelerate the development of technical expertise by novices. It provides evidence from various sources of the instructi...

    J. D. Fletcher in Adaptive Instructional Systems (2019)

  4. Article

    Open Access

    Shared Mental Models in Support of Adaptive Instruction for Teams Using the GIFT Tutoring Architecture

    Teams and teamwork are ubiquitous in military and civilian organizations. Their importance to organizational success cannot be overstated. This article describes the relationship and effect of three concepts: ...

    J. D. Fletcher, Robert A. Sottilare in International Journal of Artificial Intell… (2018)

  5. Article

    Open Access

    Comments and reflections on ITS and STEM education and training

    This article provides brief comments and reflections on Intelligent Tutoring Systems (ITS) and their use in providing STEM (science, technology, engineering, and mathematics) education and training as describe...

    J. D. Fletcher in International Journal of STEM Education (2018)

  6. No Access

    Article

    The value of digital tutoring and accelerated expertise for military veterans

    This report concerns use of a digital tutor to accelerate veterans’ acquisition of expertise and improve their preparation for the civilian workforce. As background, it briefly discusses the need to improve ve...

    J. D. Fletcher in Educational Technology Research and Development (2017)

  7. No Access

    Article

    A review of the plant virus, viroid, liberibacter and phytoplasma records for New Zealand

    A complete review of the records of plant virus, viroid, liberibacter and phytoplasma in New Zealand has found evidence for 220 viruses, seven viroids, two liberibacters and two phytoplasmas. Of these, 80 viru...

    S. Veerakone, J. Z. Tang, L. I. Ward, L. W. Liefting in Australasian Plant Pathology (2015)

  8. Article

    Open Access

    Anomalous critical fields in quantum critical superconductors

    Fluctuations around an antiferromagnetic quantum critical point (QCP) are believed to lead to unconventional superconductivity and in some cases to high-temperature superconductivity. However, the exact mechan...

    C. Putzke, P. Walmsley, J. D. Fletcher, L. Malone, D. Vignolles in Nature Communications (2014)

  9. No Access

    Article

    The truth about Pea mild mosaic virus

    Pea mild mosaic virus (PMiMV) was reported from pea (Pisum sativum) in New Zealand in 1972. As this remains the only report of this virus worldwide, we aimed to try and clarify the status of PMiM...

    Z. Perez-Egusquiza, J. Z. Tang, L. I. Ward, J. D. Fletcher in Australasian Plant Pathology (2014)

  10. No Access

    Article

    Gigahertz quantized charge pum** in graphene quantum dots

    Single-electron pumps are set to revolutionize electrical metrology by enabling the ampere to be redefined in terms of the elementary charge of an electron1. Pumps based on lithographically fixed tunnel barriers ...

    M. R. Connolly, K. L. Chiu, S. P. Giblin, M. Kataoka in Nature Nanotechnology (2013)

  11. No Access

    Article

    Towards a quantum representation of the ampere using single electron pumps

    Electron pumps generate a macroscopic electric current by controlled manipulation of single electrons. Despite intensive research towards a quantum current standard over the last 25 years, making a fast and ac...

    S.P. Giblin, M. Kataoka, J.D. Fletcher, P. See, T.J.B.M. Janssen in Nature Communications (2012)

  12. Article

    First record of Turnip mosaic virus in Pachycladon spp. (Brassicaceae): an endangered native plant species in New Zealand

    Pachycladon comprises nine native species from the South Island, New Zealand, including several threatened species. Virus-like disease symptoms were observed in a Pachycladon species collection. ...

    J. D. Fletcher, R. A. Lister, S. R. Bulman in Australasian Plant Disease Notes (2010)

  13. Article

    First record of Turnip mosaic virus in Cook’s scurvy grass (Lepidium oleraceum agg.) — an endangered native plant in New Zealand

    Cook’s scurvy grass (Lepidium oleraceum agg.) is an endangered species of native Brassicaceae that is considered threatened with extinction. Virus-like disease symptoms were observed in a newly introduced plant o...

    J. D. Fletcher, S. Bulman, P. J. Fletcher in Australasian Plant Disease Notes (2009)

  14. No Access

    Article

    Development of a New Zealand database of plant virus

    The recent 8th Australasian plant virology workshop in Rotorua, New Zealand, discussed the development of a New Zealand database of plant virus and virus-like organisms. Key points of discussion included: (i) ...

    J. D. Fletcher, R. A. Lister, G. R. G. Clover, M. B. Horner in Australasian Plant Pathology (2009)

  15. No Access

    Article

    A survey of viral diseases of Allium crops in New Zealand

    Targeted surveillance was done in 2004/2005 and 2007 to determine the presence of viruses in ornamental and vegetable Allium crops in New Zealand. Several samples were tested for regulated viruses and viruses tha...

    L. I. Ward, Z. Perez-Egusquiza, J. D. Fletcher in Australasian Plant Pathology (2009)

  16. No Access

    Article

    Molecular confirmation of New Zealand garlic yellow streak virus as Leek yellow stripe virus

    Garlic yellow streak virus (GYSV) was first reported in New Zealand by Mohamed and Young in 1981 as a new potyvirus distinct from Onion yellow dwarf virus (OYDV) and Leek yellow stripe virus (LYSV), based on host...

    T. Wei, M. N. Pearson, J. D. Fletcher in Australasian Plant Pathology (2006)

  17. No Access

    Article

    A review of the plant virus, viroid and mollicute records for New Zealand

    Considering New Zealand’s small size and remoteness, a remarkable number of plant pathogens have been recorded. A complete review of the records of plant viruses, viroids and mollicutes in New Zealand found go...

    M. N. Pearson, G. R. G. Clover, P. L. Guy, J. D. Fletcher in Australasian Plant Pathology (2006)

  18. No Access

    Article

    Zucchini yellow mosaic virus in buttercup squash — a new record in New Zealand

    Zucchini yellow mosaic virus (ZYMV) was isolated for the first time in New Zealand from buttercup squash (Cucurbita nraxima) crops in Hawke’s Bay. ZYMV, together with watermelon mosaic virus (WMV), infected two o...

    J. D. Fletcher in Australasian Plant Pathology (1996)

  19. No Access

    Chapter

    Technical and Administrative Issues in Distributed Training Technology

    New multimedia technologies are being used to distribute military education and training to physically dispersed learners. Two of the most promising and prominent of these technologies are interactive coursewa...

    G. A. Redding, J. D. Fletcher in Learning without Boundaries (1994)

  20. No Access

    Chapter

    A NATO Database on Advanced Technology to Aid Training Design

    One way for the NATO community to exchange information and stimulate research on advanced technology to aid training design is to establish a database on this topic. Such a database will give researchers, trai...

    J. D. Fletcher, E. A. Alluisi in Advanced Technologies Applied to Training … (1993)

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