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1. ASASSN-18fk: A new WZ Sge-type dwarf nova with multiple rebrightenings and a new candidate for a superhumping intermediate polar

Author

Pavlenko, E., Niijima, K., Mason, P., Wells, N., Sosnovskij, A., Antonyuk, K., Simon, A., Pit, N., Littlefield, C., Itoh, H., Kiyota, S., Tordai, T., Dubovsky, P., Vanmunster, T., Stone, G., Kato, T., Sergeev, A., Godunova, V., Lyumanov, E., Antonyuk, O., Baklanov, A., Babina, Ju., Isogai, K., Romanyuk, Ya., Troianskyi, V., and Kashuba, V.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

We present the result of a multi-longitude campaign on the photometric study of the dwarf nova ASASSN-18fk during its superoutburst in 2018. It was observed with 18 telescopes at 15 sites during ~70 nights within a three-month interval. Observations covered the main outburst, six rebrightenings and 50-d decline to a near-quiescent state. We identify ASASSN-18fk as WZ Sge-type dwarf nova with multiple rebrightenings and show the evolution of the 0.06-d superhump period over all stages of the superoutburst. A strong 22-min brightness modulation that superimposed on superhumps is found during rebrightenings and decline. Some evidence of this modulation in a form of a sideband signal is detected during the very onset of the outburst. We interpret the 22-min modulation as a spin period of the white dwarf and suggest that ASASSN-18fk is a good candidate for a superhumping intermediate polar., Comment: 12 pages, 8 figures

Published
2019

3. Key findings from the 2023 'ACT NOW on Global HIV Migration, Mobility and Health Equity' community forum.

Author

Wells, N., Ong, J. J., Stackpool-Moore, L., Warner, Melissa, Carter, D. J., McGoldrick, R., Wlodek, A., Riley, B., Holland, J., Heath-Paynter, D., Stratigos, A., Murphy, E., Haerry, D., Parczewski, M., Poonkasetwattana, M., Medland, N., Wade, S., and Allan, B.

Abstract

Background. People living with HIV continue to face laws, policies, and practices that impact their potential for travel and migration. These laws include: mandatory HIV testing and involuntary disclosure of HIV; lack of access to affordable HIV-related health care, treatment and counselling during the migration process; deportation of foreign nationals living with HIV; and restrictions on the length of stays. Methods. HIV migration laws were the topic of a half-day community forum held as part of the 12th International AIDS Society Conference on HIV Science held in Brisbane, Australia, in July 2023. Over 150 delegates attended and, after a series of presentations, delegates were invited to participate in structured, facilitated conversations about issues related to policy, health and law concerning migration of people living with HIV. In this paper, we report on key themes from those discussions and identify areas for ongoing investigation. Results. Advocates recommended the removal of unfair and unjust migration laws and policies that contribute to HIV stigma and discrimination; updated migration policies that reflect the current context and cost of biomedical approaches to HIV management and prevention; expanded and equitable access to HIV-related care regardless of migration or residency status; and the development of advocacy networks to promote changes to migration policies. Conclusions. Laws limiting the migration of people living with HIV actively discourage individuals from seeking HIV testing, treatment and care. Ultimately, restrictive migration laws and policies undermine global efforts to end AIDS as a public health concern and to virtually eliminate HIV transmission by 2030. [ABSTRACT FROM AUTHOR]

Published
2024
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5. Australian non-perennial rivers: Global lessons and research opportunities

Author

Shanafield, M, Blanchette, M, Daly, E, Wells, N, Burrows, RM, Korbel, K, Rau, GC, Bourke, S, Wakelin-King, G, Holland, A, Ralph, T, Mcgrath, G, Robson, B, Fowler, K, Andersen, MS, Yu, S, Jones, CS, Waltham, N, Banks, EW, Flatley, A, Leigh, C, Maxwell, S, Siebers, A, Bond, N, Beesley, L, Hose, G, Iles, J, Cartwright, I, Reid, M, Tayer, TDC, Duvert, C, Shanafield, M, Blanchette, M, Daly, E, Wells, N, Burrows, RM, Korbel, K, Rau, GC, Bourke, S, Wakelin-King, G, Holland, A, Ralph, T, Mcgrath, G, Robson, B, Fowler, K, Andersen, MS, Yu, S, Jones, CS, Waltham, N, Banks, EW, Flatley, A, Leigh, C, Maxwell, S, Siebers, A, Bond, N, Beesley, L, Hose, G, Iles, J, Cartwright, I, Reid, M, Tayer, TDC, and Duvert, C

Published
2024

6. Hiding in plain sight: highlighting the research gap on access to HIV and other sexual health services for underrepresented gay men in developed Western countries - insights from a scoping review with a focus on Arab men.

Author

Saliba, B, Kang, M, Wells, N, Mao, L, Prestage, G, Hammoud, MA, Saliba, B, Kang, M, Wells, N, Mao, L, Prestage, G, and Hammoud, MA

Abstract

BACKGROUND: Strategies pertaining to HIV and sexual health for gay, bisexual, and other men who have sex with men (GBMSM) have shifted focus towards underrepresented subgroups within some developed Western countries. Although emerging research exists on some subgroups, limited attention has been given to the needs of Arab GBMSM in these contexts. Considering they are part of a large diaspora, understanding their access to services is crucial. This paper focuses on Arab GBMSM as a case study within a scoping review, highlighting their hidden status within the broader landscape of HIV and sexual health research for GBMSM in the West. METHODS: A multi-method search strategy was employed, including searching four electronic databases using several terms within each of the following search topics: Arab, GBMSM, HIV and other sexual health services, and developed Western countries. RESULTS: Of the 384 articles found, only one addressed the research question and met the inclusion criteria, revealing a stark scarcity of research on access to HIV and sexual health services for this population. CONCLUSIONS: This review highlights a paucity of research on access to HIV and sexual health services for underrepresented GBMSM populations in developed Western countries. The literature indicates that, for Arab men, this may be due to a difficulty in participant recruitment and poor data collection efforts. By focusing on one hidden population, we aim to advocate for inclusive policies and interventions that promote equitable sexual health access for all. Addressing this research gap aligns with broader local and global HIV strategies to reduce disparities among underrepresented GBMSM populations.

Published
2024

8. Structure and interactions of ultracold Yb ions and Rb atoms

Author

Lamb, H. D. L., McCann, J. F., McLaughlin, B. M., Goold, J., Wells, N., and Lane, I.

Subjects
Physics - Atomic Physics, Condensed Matter - Quantum Gases, Quantum Physics
Abstract

In order to study ultracold charge-transfer processes in hybrid atom-ion traps, we have mapped out the potential energy curves and molecular parameters for several low lying states of the Rb, Yb$^+$ system. We employ both a multi-reference configuration interaction (MRCI) and a full configuration interaction (FCI) approach. Turning points, crossing points, potential minima and spectroscopic molecular constants are obtained for the lowest five molecular states. Long-range parameters, including the dispersion coefficients are estimated from our {\it ab initio} data. The separated-atom ionization potentials and atomic polarizability of the ytterbium atom ($\alpha_d=128.4$ atomic units) are in good agreement with experiment and previous calculations. We present some dynamical calculations for (adiabatic) scattering lengths for the two lowest (Yb,Rb$^+$) channels that were carried out in our work. However, we find that the pseudo potential approximation is rather limited in validity, and only applies to nK temperatures. The adiabatic scattering lengths for both the triplet and singlet channels indicate that both are large and negative in the FCI approximation., Comment: 8 pages, 3 figures, 5 tables

Published
2011
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10. ChatGPT In Healthcare: Navigating The HIPAA-Cups

Author

Wells, N. Bradford

Subjects
Privacy, Right of -- Laws, regulations and rules, Artificial intelligence -- Laws, regulations and rules, Data security -- Laws, regulations and rules, Health care industry -- Laws, regulations and rules -- Technology application, Health care industry, Government regulation, Data security issue, Artificial intelligence, Technology application, Business, international, Health Insurance Portability and Accountability Act of 1996
Abstract

Artificial Intelligence's (AI) popularity and interest has skyrocketed thanks to the release of ChatGPT in November 2022. ChatGPT is a natural language processing AI chatbot created by OpenAI. This language-learning [...]

Published
2023

11. Exploring unwanted sexual encounters among gay, bisexual, and other men who have sex with men (GBM) in Australia: Prevalence, context, and associations with mental health

Author

Wells, N, Hammoud, M, Prestage, G, Carter, A, Bavinton, B, Saliba, B, Freestone, J, Storer, D, Haire, B, Wells, N, Hammoud, M, Prestage, G, Carter, A, Bavinton, B, Saliba, B, Freestone, J, Storer, D, and Haire, B

Abstract

Sexual consent is a growing topic in public and legal debates, but often overlooks sexual subcultures among gay, bisexual and other men who have sex with men (GBM). As part of the Flux study, we studied unwanted sexual encounters among a cohort of GBM in Australia. Launched in 2014, Flux was a prospective observational study exploring health-related behaviours among GBM in Australia. In 2021, specific survey items were introduced to examine unwanted sexual encounters in the past 3 months. Binary logistic regression analysis on 967 surveys collected between June 2021 and June 2022 found that 12.2% reported at least one experience of unwanted sex in the previous three months and 39.8% reported it occurring with an anonymous partner. Most events (64.0%) occurred at their home, while 24.7% were at a sex-on-premises venue. Compared to individuals who did not report any unwanted sexual encounters, those who reported such experiences had higher pre-encounter scores on measures of anxiety (OR:1.13;95%CI:1.09-1.18) and depression (OR:1.09;95%CI:1.06-1.13). After unwanted encounters, those individuals had higher scores on measures of anxiety (OR:1.13;95%CI:1.09-1.18) and depression (OR:1.10;95%CI:1.06-1.14). We conclude that sexual consent education that specifically targets GBM is essential to mitigate the risks of unwanted sexual encounters, and that educational campaigns should consider the unique sexual subcultures within the GBM community.

Published
2023

17. Penetrators for in situ subsurface investigations of Europa

Author

Gowen, R.A., Smith, A., Fortes, A.D., Barber, S., Brown, P., Church, P., Collinson, G., Coates, A.J., Collins, G., Crawford, I.A., Dehant, V., Chela-Flores, J., Griffiths, A.D., Grindrod, P.M., Gurvits, L.I., Hagermann, A., Hussmann, H., Jaumann, R., Jones, A.P., Joy, K.H., Karatekin, O., Miljkovic, K., Palomba, E., Pike, W.T., Prieto-Ballesteros, O., Raulin, F., Sephton, M.A., Sheridan, S., Sims, M., Storrie-Lombardi, M.C., Ambrosi, R., Fielding, J., Fraser, G., Gao, Y., Jones, G.H., Kargl, G., Karl, W.J., Macagnano, A., Mukherjee, A., Muller, J.P., Phipps, A., Pullan, D., Richter, L., Sohl, F., Snape, J., Sykes, J., and Wells, N.

Published
2011
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24. LunarEX—a proposal to cosmic vision

Author

Smith, A., Crawford, I. A., Gowen, R. A., Ball, A. J., Barber, S. J., Church, P., Coates, A. J., Gao, Y., Griffiths, A. D., Hagermann, A., Joy, K. H., Phipps, A., Pike, W. T., Scott, R., Sheridan, S., Sweeting, M., Talboys, D., Tong, V., Wells, N., Biele, J., Chela-Flores, J., Dabrowski, B., Flannagan, J., Grande, M., Grygorczuk, J., Kargl, G., Khavroshkin, O. B., Klingelhoefer, G., Knapmeyer, M., Marczewski, W., McKenna-Lawlor, S., Richter, L., Rothery, D. A., Seweryn, K., Ulamec, S., Wawrzaszek, R., Wieczorek, M., Wright, I. P., and Sims, M.

Published
2009
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27. A qualitative study of clinicians and patients exploring how alcohol brief interventions can be better embedded in routine general practice.

Author

Gunatillaka N., Russell G., Nielsen S., O'Donnell R., Lam T., Skouteris H., Ball L., Barton C., Jacka D., Tam M., Mazza D., Rowe C., Wells N., Sturgiss L., Gunatillaka N., Russell G., Nielsen S., O'Donnell R., Lam T., Skouteris H., Ball L., Barton C., Jacka D., Tam M., Mazza D., Rowe C., Wells N., and Sturgiss L.

Abstract

Background: Alcohol brief interventions (BIs) involve assessing a person's alcohol use and offering individualised advice to reduce health risks. Yet, despite their proven effectiveness, clinicians do not routinely offer brief interventions for alcohol use in daily practice. Aim/Objectives: To identify factors that influence whether alcohol BIs are used in consultations from the perspective of clinicians and patients. Method(s): Qualitative study using semi-structured interviews and focus groups (face-to-face and virtual) of primary care clinicians working in the greater Melbourne metropolitan region and patients from across Australia. Field notes were made from audio-recordings and themes were identified using a matrix based on the question structure. Finding(s): Thirty-nine GPs, 9 practice nurses and 16 patients participated. Barriers were identified at multiple levels of the healthcare system and across the general community including Australian drinking norms; inconsistent public health messaging around alcohol harm; patients not identifying general practice as a place to go for help; community stigma; general practice culture around preventive health; limitations of clinical software and current patient resources. Identified facilitators for embedding BIs in daily practice included: (1) raising community awareness of the health harms of alcohol; (2) building a practice culture around prevention; and (3) supportive resources to facilitate discussion about alcohol use and strategies to reduce intake. Implications: We have identified factors at multiple levels of the healthcare system that influence the successful implementation of alcohol BIs in general practice. We will now develop an intervention for increasing clinician uptake of BIs in daily general practice.

Published
2020

34. Prosecution as an administrative system: some fairness concerns.

Author

Wells, N. Douglas

Subjects
Public prosecutors -- Laws, regulations and rules, Criminal justice, Administration of -- Laws, regulations and rules, Judicial review of administrative acts -- Laws, regulations and rules, Discrimination in criminal justice administration -- Cases, United States v. Armstrong (517 U.S. 456 (1996))
Published
1999

35. Avoidance and Mitigation of Coral and Sponge Species During Exploratory Drilling Activities Offshore Newfoundland and Labrador.

Author

Gullage, L., Hayes, V., Neves, B. M., Wells, N., Cyr, F., and Murillo, F. J.

Subjects
DRILLING muds, CORAL bleaching, MARINE ecology, CORALS, SPECIES, DRILLING & boring
Abstract

An investigation was conducted into the likely impacts of exploratory drilling to coral and sponge species in the Newfoundland and Labrador (NL) region, as well as the ways in which avoidance and mitigation measures can be applied to reduce them. Impacts described in existing literature suggest that coral and sponge species may experience changes in behaviour (e.g. feeding, reproduction), fitness, and survival as a result of physical damage, exposure to chemicals, and/or excess sedimentation which result from exploratory drilling activities. As outlined in the Fisheries Act, it is recommended that a "mitigation hierarchy" of: (1) avoid, (2) mitigate, (3) offset, be used to reduce risks to biodiversity. However, because offsetting impacts would not generally be compatible with benthic conservation objectives, they are not discussed in depth in this report. Following this hierarchy, the avoidance of exploratory drilling in existing special areas that have been previously delineated based on the presence of coral and/or sponge species in high densities is essential for preserving biodiversity in the region. This would include Significant Benthic Areas (SiBAs), Vulnerable Marine Ecosystems (VMEs), and any sites where the zone of influence from exploratory drilling would overlap SiBA or VME boundaries. Avoidance in areas outside SiBAs and VMEs where the density of coral and sponge species observed during pre-drill surveys meets the thresholds used to define SiBAs and VMEs is also of high importance. In addition, various modifications to existing exploratory drilling processes, intended to mitigate the impacts to coral and sponge species, without considerations to engineering and/or economic impacts, have also been outlined within the report. They would allow for reductions to the area of impact, the amount of cuttings generated, and the release of drilling muds into the environment, thereby reducing the overall impact to coral and sponge species in the area. [ABSTRACT FROM AUTHOR]

Published
2022

43. Quantizing the electromagnetic field near two-sided semitransparent mirrors

Author

Furtak-Wells, N, Clark, LA, Purdy, R, and Beige, A

Abstract

This paper models light scattering through flat surfaces with finite transmission, reflection, and absorption rates, with wave packets approaching the mirror from both sides. While using the same notion of photons as in free space, our model also accounts for the presence of mirror images and the possible exchange of energy between the electromagnetic field and the mirror surface. To test our model, we derive the spontaneous decay rate and the level shift of an atom in front of a semitransparent mirror as a function of its transmission and reflection rates. When considering limiting cases and using standard approximations, our approach reproduces well-known results but it also paves the way for the modeling of more complex scenarios.

Published
2018

44. Monitoring of oral health in early intervention for psychosis teams: the extended Three Shires randomised trial

Author

Adams, CE, Clark Wells, N, Clifton, A, Jones, H, Simpson, J, Tosh, G, Callaghan, P, Liddle, P, Guo, B, Furtado, V, Khokhar, MA, and Aggarwal, VR

Abstract

Background: The British Society for Disability and Oral Health guidelines made recommendations for oral health care for people with mental health problems, including providing oral health advice, support, promotion and education. The effectiveness of interventions based on these guidelines on oral health-related outcomes in mental health service users is untested. Objective: To acquire basic data on the oral health of people with or at risk of serious mental illness. To determine the effects of an oral health checklist in routine clinical practice. Design: Clinician and service user-designed cluster randomised trial. Settings and Participants: The trial compared a simple form for monitoring oral health care with standard care (no form) for outcomes relevant to service use and dental health behaviour for people with suspected psychosis in Mid and North England. Thirty-five teams were divided into two groups and recruited across 2012-3 with one year follow up. Results: 18 intervention teams returned 882 baseline intervention forms and 274 outcome sheets one year later (31%). Control teams (n = 17) returned 366 baseline forms. For the proportion for which data were available at one year we found no significant differences for any outcomes between those allocated to the initial monitoring checklist and people in the control group (Registered with dentist (p = 0.44), routine check-up within last year (p = 0.18), owning a toothbrush (p = 0.99), cleaning teeth twice a day (p = 0.68), requiring urgent dental treatment (p = 0.11). Conclusion: This trial provides no clear evidence that Care Co-ordinators (largely nursing staff) using an oral health checklist improves oral health behaviour or oral health state in those thought to be at risk of psychosis or with early psychosis.

Published
2018

46. A space demonstration of the next generation TT and C standards

Author

Shave, N. P, Wells, N. S, Hooke, A, and Durst, R

Subjects
Space Communications, Spacecraft Communications, Command And Tracking
Abstract

An initiative to develop an integrated set of space data communication protocols, which will complement and expand upon the current Consultative Committee for Space Data Systems (CCSDS) telemetry and telecommand standards, is reported on. The aim is to provide a comprehensive set of spacecraft control and monitoring data handling services. The space communications protocol standards (SCPS) initiative will provide a set of spacecraft telemetry, telecommand and control (TT and C) standards that will serve a wide range of civilian and military space missions. A software flight test and demonstration of the capabilities of the SCPS protocols was performed using the in orbit space technology research vehicle and compared to laboratory simulations. The results from this test will contribute to the continued SCPS protocol development program.

Published
1996

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