135 results on '"Humphries N"'
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2. Drivers and barriers of international migration of doctors to and from the United Kingdom: a scoping review
- Author
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Brennan, N., Langdon, N., Bryce, M., Burns, L., Humphries, N., Knapton, A., and Gale, T.
- Published
- 2023
- Full Text
- View/download PDF
3. 280 one-opposition near-Earth asteroids recovered by the EURONEAR with the Isaac Newton Telescope
- Author
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Vaduvescu, O., Hudin, L., Mocnik, T., Char, F., Sonka, A., Tudor, V., Ordonez-Etxeberria, I., Alfaro, M. Diaz, Ashley, R., Errmann, R., Short, P., Moloceniuc, A., Cornea, R., Inceu, V., Zavoianu, D., Popescu, M., Curelaru, L., Mihalea, S., Stoian, A. -M., Boldea, A., Toma, R., Fields, L., Grigore, V., Stoev, H., Lopez-Martinez, F., Humphries, N., Sowicka, P., Ramanjooloo, Y., Manilla-Robles, A., Riddick, F. C., Jimenez-Lujan, F., Mendez, J., Aceituno, F., Sota, A., Jones, D., Hidalgo, S., Murabito, S., Oteo, I., Bongiovanni, A., Zamora, O., Pyrzas, S., Genova-Santos, R., Font, J., Bereciartua, A., Perez-Fournon, I., Martinez-Vazquez, C. E., Monelli, M., Cicuendez, L., Monteagudo, L., Agulli, I., Bouy, H., Huelamo, N., Monguio, M., Gansicke, B. T., Steeghs, D., Gentile-Fusillo, N. P., Hollands, M. A., Toloza, O., Manser, C. J., Dhillon, V., Sahman, D., Fitzsimmons, A., McNeill, A., Thompson, A., Tabor, M., Murphy, D. N. A., Davies, J., Snodgrass, C., Triaud, A. H. M. J., Groot, P. J., Macfarlane, S., Peletier, R., Sen, S., Ikiz, T., Hoekstra, H., Herbonnet, R., Kohlinger, F., Greimel, R., Afonso, A., Parker, Q. A., Kong, A. K. H., Bassa, C., and Pleunis, Z.
- Subjects
Astrophysics - Earth and Planetary Astrophysics ,Astrophysics - Instrumentation and Methods for Astrophysics - Abstract
One-opposition near-Earth asteroids (NEAs) are growing in number, and they must be recovered to prevent loss and mismatch risk, and to improve their orbits, as they are likely to be too faint for detection in shallow surveys at future apparitions. We aimed to recover more than half of the one-opposition NEAs recommended for observations by the Minor Planet Center (MPC) using the Isaac Newton Telescope (INT) in soft-override mode and some fractions of available D-nights. During about 130 hours in total between 2013 and 2016, we targeted 368 NEAs, among which 56 potentially hazardous asteroids (PHAs), observing 437 INT Wide Field Camera (WFC) fields and recovering 280 NEAs (76% of all targets). Engaging a core team of about ten students and amateurs, we used the THELI, Astrometrica, and the Find_Orb software to identify all moving objects using the blink and track-and-stack method for the faintest targets and plotting the positional uncertainty ellipse from NEODyS. Most targets and recovered objects had apparent magnitudes centered around V~22.8 mag, with some becoming as faint as V~24 mag. One hundred and three objects (representing 28% of all targets) were recovered by EURONEAR alone by Aug 2017. Orbital arcs were prolonged typically from a few weeks to a few years; our oldest recoveries reach 16 years. The O-C residuals for our 1,854 NEA astrometric positions show that most measurements cluster closely around the origin. In addition to the recovered NEAs, 22,000 positions of about 3,500 known minor planets and another 10,000 observations of about 1,500 unknown objects (mostly main-belt objects) were promptly reported to the MPC by our team. Four new NEAs were discovered serendipitously in the analyzed fields, increasing the counting to nine NEAs discovered by the EURONEAR in 2014 and 2015., Comment: Accepted for publication in Astronomy and Astrophysics (11 Oct 2017). Version 2 adding two co-authors and fixing the affiliation page overflow
- Published
- 2017
- Full Text
- View/download PDF
4. Convergence of marine megafauna movement patterns in coastal and open oceans
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Sequeira, A. M. M., Rodríguez, J. P., Eguíluz, V. M., Harcourt, R., Hindell, M., Sims, D. W., Duarte, C. M., Costa, D. P., Fernández-Gracia, J., Ferreira, L. C., Hays, G. C., Heupel, M. R., Meekan, M. G., Aven, A., Bailleul, F., Baylis, A. M. M., Berumen, M. L., Braun, C. D., Burns, J., Caley, M. J., Campbell, R., Carmichael, R. H., Clua, E., Einoder, L. D., Friedlaender, Ari, Goebel, M. E., Goldsworthy, S. D., Guinet, C., Gunn, J., Hamer, D., Hammerschlag, N., Hammill, M., Hückstädt, L. A., Humphries, N. E., Lea, M.-A., Lowther, A., Mackay, A., McHuron, E., McKenzie, J., McLeay, L., McMahon, C. R., Mengersen, K., Muelbert, M. M. C., Pagano, A. M., Page, B., Queiroz, N., Robinson, P. W., Shaffer, S. A., Shivji, M., Skomal, G. B., Thorrold, S. R., Villegas-Amtmann, S., Weise, M., Wells, R., Wetherbee, B., Wiebkin, A., Wienecke, B., and Thums, M.
- Published
- 2018
5. Exploring recent patterns of migration of doctors to the United Kingdom: A mixed-methods study
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Brennan, N, primary, Langdon, N, additional, Gale, T, additional, Humphries, N, additional, Knapton, A, additional, and Bryce, M, additional
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- 2023
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6. ‘Everything was just getting worse and worse’: deteriorating job quality as a driver of doctor emigration from Ireland
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Humphries, N., McDermott, A. M., Conway, E., Byrne, J-P, Prihodova, L., Costello, R., and Matthews, A.
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- 2019
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7. The EURONEAR Lightcurve Survey of Near Earth Asteroids
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Vaduvescu, O., Macias, A. Aznar, Tudor, V., Predatu, M., Galád, A., Gajdoš, Š., Világi, J., Stevance, H. F., Errmann, R., Unda-Sanzana, E., Char, F., Peixinho, N., Popescu, M., Sonka, A., Cornea, R., Suciu, O., Toma, R., Santos-Sanz, P., Sota, A., Licandro, J., Serra-Ricart, M., Morate, D., Mocnik, T., Alfaro, M. Diaz, Lopez-Martinez, F., McCormac, J., and Humphries, N.
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- 2017
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8. Hospital doctors in Ireland working through COVID-19 pandemic: learning from individual experience
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Humphries, N, primary, Byrne, J-P, additional, and Creese, J, additional
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- 2022
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9. Numerical analysis of codimension-one, -two and -three bifurcations in a periodically-forced impact oscillator with two discontinuity surfaces
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Mason, J.F., Humphries, N., and Piiroinen, P.T.
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- 2014
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10. A discontinuity-geometry view of the relationship between saddle–node and grazing bifurcations
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Humphries, N. and Piiroinen, P.T.
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- 2012
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11. Psychotic-like experiences? Trajectories and typologies of hallucinations and delusions from early adolescence to early adulthood in a population-based sample of Irish youth
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Coughlan, H., primary, Humphries, N., additional, Clarke, M.C., additional, Healy, C., additional, and Cannon, M., additional
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- 2021
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12. Psychotic-like experiences? Trajectories and typologies of hallucinations and delusions from early adolescence to early adulthood in a population-based sample of Irish youth.
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Coughlan, H., Humphries, N., Clarke, M.C., Healy, C., and Cannon, M.
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- 2022
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13. Phenomenological characteristics and explanations of unusual perceptual experiences, thoughts and beliefs in a population sample of early adolescents.
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Coughlan, H., Healy, C., Humphries, N., Clarke, M., Kelleher, I., and Cannon, M.
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- 2022
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14. Hospital doctors and the struggle for work-life balance: the case of Ireland
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Humphries, N, primary, Creese, J, additional, and Byrne, J-P, additional
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- 2020
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15. Phenomenological characteristics and explanations of unusual perceptual experiences, thoughts and beliefs in a population sample of early adolescents
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Coughlan, H., primary, Healy, C., additional, Humphries, N., additional, Clarke, M., additional, Kelleher, I., additional, and Cannon, M., additional
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- 2020
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16. Measurement error in computed tomography pelvimetry
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Anderson, N, Humphries, N, and Wells, J E
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- 2005
17. Angle-dependence and reproducibility of dual-beam vector doppler ultrasound in the common carotid arteries of normal volunteers
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Steel, Robin, Ramnarine, K.V, Criton, A, Davidson, F, Allan, P.L, Humphries, N, Routh, H.F, Fish, P.J, and Hoskins, P.R
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- 2004
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18. Tracking the leavers: Towards a better understanding of doctor migration from Ireland to Australia 2008-2018
- Author
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Humphries, N, Connell, J, Negin, J, Buchan, J, Humphries, N, Connell, J, Negin, J, and Buchan, J
- Abstract
© 2019 The Author(s). Background: The recession of 2008 triggered large-scale emigration from Ireland. Australia emerged as a popular destination for Irish emigrants and for Irish-trained doctors. This paper illustrates the impact that such an external shock can have on the medical workforce and demonstrates how cross-national data sharing can assist the source country to better understand doctor emigration trends. Method: This study draws on Australian immigration, registration and census data to highlight doctor migration flows from Ireland to Australia, 2008-2018. Findings: General population migration from Ireland to Australia increased following the 2008 recession, peaked between 2011 and 2013 before returning to pre-2008 levels by 2014, in line with the general economic recovery in Ireland. Doctor emigration from Ireland to Australia did not follow the same pattern, but rather increased in 2008 and increased year on year since 2014. In 2018, 326 Irish doctors obtained working visas for Australia. That doctor migration is out of sync with general economic conditions in Ireland and with wider migration patterns indicates that it is influenced by factors other than evolving economic conditions in Ireland, perhaps factors relating to the health system. Discussion: Doctor emigration from Ireland to Australia has not decreased in line with improved economic conditions in Ireland, indicating that other factors are driving and sustaining doctor emigration. This paper considers some of these factors. Largescale doctor emigration has significant implications for the Irish health system; representing a brain drain of talent, generating a need for replacement migration and a high dependence on internationally trained doctors. This paper illustrates how source countries, such as Ireland, can use destination country data to inform an evidence-based policy response to doctor emigration.
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- 2019
19. REASONS FOR AND AVOIDABILITY OF REFERRALS FROM GENERALISTS TO SPECIALISTS
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Donohoe, MT, Kravitz, RL, Chandra, R, Chen, A, and Humphries, N
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- 1996
20. Convergence of marine megafauna movement patterns in coastal and open oceans
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Sequeira, A. M.M., Rodríguez, J. P., Eguíluz, V. M., Harcourt, R., Hindell, M., Sims, D. W., Duarte, C. M., Costa, D. P., Fernández-Gracia, J., Ferreira, L. C., Hays, G. C., Heupel, M. R., Meekan, M. G., Aven, A., Bailleul, F., Baylis, A. M.M., Berumen, M. L., Braun, C. D., Burns, J., Caley, M. J., Campbell, R., Carmichael, R. H., Clua, E., Einoder, L. D., Friedlaender, Ari, Goebel, M. E., Goldsworthy, S. D., Guinet, C., Gunn, J., Hamer, D., Hammerschlag, N., Hammill, M., Hückstädt, L. A., Humphries, N. E., Lea, M. A., Lowther, A., Mackay, A., McHuron, E., McKenzie, J., McLeay, L., McMahon, C. R., Mengersen, K., Muelbert, M. M.C., Pagano, A. M., Page, B., Queiroz, N., Robinson, P. W., Shaffer, S. A., Shivji, M., Skomal, G. B., Thorrold, S. R., Villegas-Amtmann, S., Weise, M., Wells, R., Wetherbee, B., Wiebkin, A., Wienecke, B., Thums, M., Sequeira, A. M.M., Rodríguez, J. P., Eguíluz, V. M., Harcourt, R., Hindell, M., Sims, D. W., Duarte, C. M., Costa, D. P., Fernández-Gracia, J., Ferreira, L. C., Hays, G. C., Heupel, M. R., Meekan, M. G., Aven, A., Bailleul, F., Baylis, A. M.M., Berumen, M. L., Braun, C. D., Burns, J., Caley, M. J., Campbell, R., Carmichael, R. H., Clua, E., Einoder, L. D., Friedlaender, Ari, Goebel, M. E., Goldsworthy, S. D., Guinet, C., Gunn, J., Hamer, D., Hammerschlag, N., Hammill, M., Hückstädt, L. A., Humphries, N. E., Lea, M. A., Lowther, A., Mackay, A., McHuron, E., McKenzie, J., McLeay, L., McMahon, C. R., Mengersen, K., Muelbert, M. M.C., Pagano, A. M., Page, B., Queiroz, N., Robinson, P. W., Shaffer, S. A., Shivji, M., Skomal, G. B., Thorrold, S. R., Villegas-Amtmann, S., Weise, M., Wells, R., Wetherbee, B., Wiebkin, A., Wienecke, B., and Thums, M.
- Abstract
The extent of increasing anthropogenic impacts on large marine vertebrates partly depends on the animals' movement patterns. Effective conservation requires identification of the key drivers of movement including intrinsic properties and extrinsic constraints associated with the dynamic nature of the environments the animals inhabit. However, the relative importance of intrinsic versus extrinsic factors remains elusive. We analyze a global dataset of ∼2.8 million locations from <2, 600 tracked individuals across 50 marine vertebrates evolutionarily separated by millions of years and using different locomotion modes (fly, swim, walk/paddle). Strikingly, movement patterns show a remarkable convergence, being strongly conserved across species and independent of body length and mass, despite these traits ranging over 10 orders of magnitude among the species studied. This represents a fundamental difference between marine and terrestrial vertebrates not previously identified, likely linked to the reduced costs of locomotion in water. Movement patterns were primarily explained by the interaction between species-specific traits and the habitat(s) they move through, resulting in complex movement patternswhenmoving close to coasts compared with more predictable patterns when moving in open oceans. This distinct difference may be associated with greater complexity within coastal microhabitats, highlighting a critical role of preferred habitat in shaping marine vertebrate global movements. Efforts to develop understanding of the characteristics of vertebrate movement should consider the habitat(s) through which they move to identify how movement patterns will alter with forecasted severe ocean changes, such as reduced Arctic sea ice cover, sea level rise, and declining oxygen content.
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- 2018
21. 280 one-opposition near-earth asteroids recovered by the EURONEAR with the Isaac Newton telescope
- Author
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European Research Council, Northern Ireland Kidney Research Fund, Vaduvescu, O., Hudin, L., Mocnik, T., Char, F., Sonka, A., Tudor, V., Ordonez-Etxeberria, I., Díaz Alfaro, M., Ashley, R., Errmann, R., Short, P., Moloceniuc, A., Cornea, R., Inceu, V., Zavoianu, D., Popescu, M., Curelaru, L., Mihalea, S., Stoian, A. M., Boldea, A., Toma, R., Fields, L., Grigore, V., Stoev, H., López-Martínez, F., Humphries, N., Sowicka, P., Ramanjooloo, Y., Manilla-Robles, A., Riddick, F. C., Jiménez-Luján, F., Méndez, J., Aceituno, Francisco José, Sota Ballano, Alfredo, Jones, D., Hidalgo, S., Murabito, S., Oteo Gómez, Iván, Bongiovanni, Ángel, Zamora, O., Pyrzas, S., Génova-Santos, R., Font, J., Bereciartua, A., Pèrez-Fournon, Ismael, Martínez-Vázquez, C. E., Monelli, M., Cicuendez, L., Monteagudo, L., Agulli, I., Bouy, Hervé, Huélamo, Nuria, Dhillon, V., European Research Council, Northern Ireland Kidney Research Fund, Vaduvescu, O., Hudin, L., Mocnik, T., Char, F., Sonka, A., Tudor, V., Ordonez-Etxeberria, I., Díaz Alfaro, M., Ashley, R., Errmann, R., Short, P., Moloceniuc, A., Cornea, R., Inceu, V., Zavoianu, D., Popescu, M., Curelaru, L., Mihalea, S., Stoian, A. M., Boldea, A., Toma, R., Fields, L., Grigore, V., Stoev, H., López-Martínez, F., Humphries, N., Sowicka, P., Ramanjooloo, Y., Manilla-Robles, A., Riddick, F. C., Jiménez-Luján, F., Méndez, J., Aceituno, Francisco José, Sota Ballano, Alfredo, Jones, D., Hidalgo, S., Murabito, S., Oteo Gómez, Iván, Bongiovanni, Ángel, Zamora, O., Pyrzas, S., Génova-Santos, R., Font, J., Bereciartua, A., Pèrez-Fournon, Ismael, Martínez-Vázquez, C. E., Monelli, M., Cicuendez, L., Monteagudo, L., Agulli, I., Bouy, Hervé, Huélamo, Nuria, and Dhillon, V.
- Abstract
Context. One-opposition near-Earth asteroids (NEAs) are growing in number, and they must be recovered to prevent loss and mismatch risk, and to improve their orbits, as they are likely to be too faint for detection in shallow surveys at future apparitions. Aims. We aimed to recover more than half of the one-opposition NEAs recommended for observations by the Minor Planet Center (MPC) using the Isaac Newton Telescope (INT) in soft-override mode and some fractions of available D-nights. During about 130 h in total between 2013 and 2016, we targeted 368 NEAs, among which 56 potentially hazardous asteroids (PHAs), observing 437 INT Wide Field Camera (WFC) fields and recovering 280 NEAs (76% of all targets). Methods. Engaging a core team of about ten students and amateurs, we used the THELI, Astrometrica, and the FindOrb software to identify all moving objects using the blink and track-And-stack method for the faintest targets and plotting the positional uncertainty ellipse from NEODyS. Results. Most targets and recovered objects had apparent magnitudes centered around V ~ 22.8 mag, with some becoming as faint as V ~ 24 mag. One hundred and three objects (representing 28% of all targets) were recovered by EURONEAR alone by Aug. 2017. Orbital arcs were prolonged typically from a few weeks to a few years; our oldest recoveries reach 16 years. The O-C residuals for our 1854 NEA astrometric positions show that most measurements cluster closely around the origin. In addition to the recovered NEAs, 22 000 positions of about 3500 known minor planets and another 10 000 observations of about 1500 unknown objects (mostly main-belt objects) were promptly reported to the MPC by our team. Four new NEAs were discovered serendipitously in the analyzed fields and were promptly secured with the INT and other telescopes, while two more NEAs were lost due to extremely fast motion and lack of rapid follow-up time. They increase the counting to nine NEAs discovered by the EURONEAR in 2014 an
- Published
- 2018
22. Hot tips!
- Author
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Humphries, N.
- Subjects
Withholding tax -- Cases ,Tipping -- Taxation ,Figael Ltd. v. Fox (1990 S.T.C. 583 (Q.B.)) - Published
- 1990
23. MORAL IDENTITY INTERNALIZATION, NOT SYMBOLIZATION, IS ASSOCIATED WITH LOWER AGEISM AMONG YOUNGER ADULTS
- Author
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Dzumba, D, primary, Cantu, C, additional, Humphries, N, additional, Kovacks, A, additional, Shelly, C, additional, Bailey, T, additional, and Barnett, M, additional
- Published
- 2018
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24. Understanding and managing fish populations: keeping the toolbox fit for purpose
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Paris, J. R., primary, Sherman, K. D., additional, Bell, E., additional, Boulenger, C., additional, Delord, C., additional, El‐Mahdi, M. B. M., additional, Fairfield, E. A., additional, Griffiths, A. M., additional, Gutmann Roberts, C., additional, Hedger, R. D., additional, Holman, L. E., additional, Hooper, L. H., additional, Humphries, N. E., additional, Katsiadaki, I., additional, King, R. A., additional, Lemopoulos, A., additional, Payne, C. J., additional, Peirson, G., additional, Richter, K. K., additional, Taylor, M. I., additional, Trueman, C. N., additional, Hayden, B., additional, and Stevens, J. R., additional
- Published
- 2018
- Full Text
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25. 280 one-opposition near-Earth asteroids recovered by the EURONEAR with the Isaac Newton Telescope
- Author
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Vaduvescu, O., primary, Hudin, L., additional, Mocnik, T., additional, Char, F., additional, Sonka, A., additional, Tudor, V., additional, Ordonez-Etxeberria, I., additional, Díaz Alfaro, M., additional, Ashley, R., additional, Errmann, R., additional, Short, P., additional, Moloceniuc, A., additional, Cornea, R., additional, Inceu, V., additional, Zavoianu, D., additional, Popescu, M., additional, Curelaru, L., additional, Mihalea, S., additional, Stoian, A.-M., additional, Boldea, A., additional, Toma, R., additional, Fields, L., additional, Grigore, V., additional, Stoev, H., additional, Lopez-Martinez, F., additional, Humphries, N., additional, Sowicka, P., additional, Ramanjooloo, Y., additional, Manilla-Robles, A., additional, Riddick, F. C., additional, Jimenez-Lujan, F., additional, Mendez, J., additional, Aceituno, F., additional, Sota, A., additional, Jones, D., additional, Hidalgo, S., additional, Murabito, S., additional, Oteo, I., additional, Bongiovanni, A., additional, Zamora, O., additional, Pyrzas, S., additional, Génova-Santos, R., additional, Font, J., additional, Bereciartua, A., additional, Perez-Fournon, I., additional, Martínez-Vázquez, C. E., additional, Monelli, M., additional, Cicuendez, L., additional, Monteagudo, L., additional, Agulli, I., additional, Bouy, H., additional, Huélamo, N., additional, Monguió, M., additional, Gänsicke, B. T., additional, Steeghs, D., additional, Gentile-Fusillo, N. P., additional, Hollands, M. A., additional, Toloza, O., additional, Manser, C. J., additional, Dhillon, V., additional, Sahman, D., additional, Fitzsimmons, A., additional, McNeill, A., additional, Thompson, A., additional, Tabor, M., additional, Murphy, D. N. A., additional, Davies, J., additional, Snodgrass, C., additional, Triaud, A. H. M. J., additional, Groot, P. J., additional, Macfarlane, S., additional, Peletier, R., additional, Sen, S., additional, İkiz, T., additional, Hoekstra, H., additional, Herbonnet, R., additional, Köhlinger, F., additional, Greimel, R., additional, Afonso, A., additional, Parker, Q. A., additional, Kong, A. K. H., additional, Bassa, C., additional, and Pleunis, Z., additional
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- 2018
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26. MORAL IDENTITY INTERNALIZATION, NOT SYMBOLIZATION, IS ASSOCIATED WITH LOWER AGEISM AMONG YOUNGER ADULTS
- Author
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Michael D. Barnett, Humphries N, A Kovacks, Bailey T, Dzumba D, Cantu C, and Shelly C
- Subjects
Moral identity ,Abstracts ,Health (social science) ,Younger adults ,media_common.quotation_subject ,Life-span and Life-course Studies ,Psychology ,Internalization ,Health Professions (miscellaneous) ,Developmental psychology ,media_common - Abstract
Ageism refers to discrimination and prejudice based on age-related stereotypes. Forms of prejudice such as sexism and racism have been investigated in relation to morality; however, little extant research has considered ageism and moral identity. The purpose of this study was to investigate, among younger adults, whether moral identity symbolization – that is, the desire to appear moral to others (i.e., public morality) – and/or moral identity internalization – that is, wanting to be more moral (i.e., private morality) – was associated with ageism among younger adults. College students, ages 18–29 (N = 688, 75.00% female) enrolled in a psychology course at a large public university in the southern U.S. completed a survey which included the Self-Importance of Moral Identity Scale and Fabroni Scale of Ageism. Men had higher levels of ageism than women. Moral identity symbolization was not associated with ageism; however, moral identity internalization was associated with lower ageism. Results regarding gender are consistent with previous studies finding greater intolerance among men. Among younger adults, moral identity symbolization may not be related to ageism since attitudes about older adults are not germane to public morality the way racism or sexism are. Younger adults who internalize their moral identity – that is, they wish to be a more moral person – may engage in less stereotyping and prejudice towards older adults.
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- 2018
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27. THE CRITICAL ROLE OF THE HEALTHCARE SYSTEM ON LONG-TERM CARE ADMISSIONS OF PEOPLE WITH DEMENTIA
- Author
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Donnelly, N., primary, Humphries, N., additional, Hickey, A., additional, and Doyle, F., additional
- Published
- 2017
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28. A new approach for the identification of turns and steps in tortuous movement data
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Humphries, N. E., Weimerskirch, Henri, Sims, David W, The Laboratory (Marine Biological Association of the United Kingdom), Marine Biological Association of the United Kingdom (MBA), Marine Biology and Ecology Research Centre, Plymouth University, Centre d'études biologiques de Chizé (CEBC), Centre National de la Recherche Scientifique (CNRS), National Oceanography Centre [Southampton] (NOC), University of Southampton, and Centre for Biological Sciences (University of Southampton)
- Subjects
correlated random walk ,random walk ,Lévy flight ,cell tracking ,satellite tracking ,[SDE]Environmental Sciences ,scale-free movement ,optimal foraging theory ,power-law distribution ,fractal path analysis ,albatross - Abstract
International audience; 1. A first step in the analysis of complex movement data often involves discretisation of the path into a series of step-lengths and turns, for example in the analysis of specialised random walks, such as Lévy flights. However, the identification of turning points, and therefore step-lengths, in a tortuous path is dependent on ad-hoc parameter choices. Consequently, studies testing for movement patterns in these data, such as Lévy flights, have generated debate. However, studies focusing on one-dimensional (1D) data, as in the vertical displacements of marine pelagic predators, where turning points can be identified unambiguously have provided strong support for Lévy flight movement patterns. 2. Here, we investigate how step-length distributions in 3D movement patterns would be interpreted by tags recording in 1D (i.e. depth) and demonstrate the dimensional symmetry previously shown mathematically for Lévy-flight movements. We test the veracity of this symmetry by simulating several measurement errors common in empirical datasets and find Lévy patterns and exponents to be robust to low-quality movement data. 3. We then consider exponential and composite Brownian random walks and show that these also project into 1D with sufficient symmetry to be clearly identifiable as such. 4. By extending the symmetry paradigm, we propose a new methodology for step-length identification in 2D or 3D movement data. The methodology is successfully demonstrated in a re-analysis of wandering albatross Global Positioning System (GPS) location data previously analysed using a complex methodology to determine bird-landing locations as turning points in a Lévy walk. For this high-resolution GPS data, we show that there is strong evidence for albatross foraging patterns approximated by truncated Lévy flights spanning over 3*5 orders of magnitude. 5. Our simple methodology and freely available software can be used with any 2D or 3D movement data at any scale or resolution and are robust to common empirical measurement errors. The method should find wide applicability in the field of movement ecology spanning the study of motile cells to humans.
- Published
- 2013
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29. To Madagascar and back: long-distance, return migration across open ocean by a pregnant female bull shark Carcharhinus leucas
- Author
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Lea, J. S. E., primary, Humphries, N. E., additional, Clarke, C. R., additional, and Sims, D. W., additional
- Published
- 2015
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30. Scaling laws of marine predator search behaviour
- Author
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Sims, D., Southall, E., Humphries, N., Hays, G., Bradshaw, Corey, Pitchford, J., James, A., Ahmed, M., Brierley, A., Hindell, Mark A., Morritt, D., Musyl, M., Righton, D., Shepard, E., Wearmouth, V., Wilson, R., Witt, M., Metcalfe, J., Sims, D., Southall, E., Humphries, N., Hays, G., Bradshaw, Corey, Pitchford, J., James, A., Ahmed, M., Brierley, A., Hindell, Mark A., Morritt, D., Musyl, M., Righton, D., Shepard, E., Wearmouth, V., Wilson, R., Witt, M., and Metcalfe, J.
- Abstract
Many free-ranging predators have to make foraging decisions with little, if any, knowledge of present resource distribution and availability. The optimal search strategy they should use to maximize encounter rates with prey in heterogeneous natural environments remains a largely unresolved issue in ecology. Lévy walks are specialized random walks giving rise to fractal movement trajectories that may represent an optimal solution for searching complex landscapes. However, the adaptive significance of this putative strategy in response to natural prey distributions remains untested. Here we analyse over a million movement displacements recorded from animal-attached electronic tags to show that diverse marine predators—sharks, bony fishes, sea turtles and penguins—exhibit Lévy-walk-like behaviour close to a theoretical optimum. Prey density distributions also display Lévy-like fractal patterns, suggesting response movements by predators to prey distributions. Simulations show that predators have higher encounter rates when adopting Lévy-type foraging in natural-like prey fields compared with purely random landscapes. This is consistent with the hypothesis that observed search patterns are adapted to observed statistical patterns of the landscape. This may explain why Lévy-like behaviour seems to be widespread among diverse organisms, from microbes8 to humans, as a 'rule' that evolved in response to patchy resource distributions.
- Published
- 2008
31. High Penetration Rates: Hazards and Well Control—A Case Study
- Author
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Frigaard, I. A., additional, Humphries, N. L., additional, Rezmer-Cooper, I. M., additional, and James, J. P., additional
- Published
- 1997
- Full Text
- View/download PDF
32. Effect of exercise intensity on bone density, strength, and calcium turnover in older women.
- Author
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Humphries B, Newton RU, Bronks R, Marshall S, McBride J, Triplett-McBride T, Häkkinen K, Kraemer WJ, and Humphries N
- Published
- 2000
33. Reasons for outpatient referrals from generalists to specialists.
- Author
-
Donohoe, Martin T., Kravitz, Richard L., Wheeler, David B., Chandra, Ravi, Chen, Alice, Humphries, Natasha, Donohoe, M T, Kravitz, R L, Wheeler, D B, Chandra, R, Chen, A, and Humphries, N
- Subjects
MEDICAL referrals ,GENERAL practitioners ,MEDICAL care - Abstract
Objective: To determine the relative importance of medical and nonmedical factors influencing generalists' decisions to refer, and of the factors that might avert unnecessary referrals.Design: Prospective survey of all referrals from generalists to subspecialists over a 5-month period.Setting: University hospital outpatient clinics.Participants: Fifty-seven staff physicians in general internal medicine, family medicine, dermatology, orthopedics, gastroenterology, and rheumatology.Measurements and Main Results: For each referral, the generalist rated a number of medical and nonmedical reasons for referral, as well as factors that may have helped avert the referral; the specialist seeing the patient then rated the appropriateness, timeliness, and complexity of the referral. Both physicians rated the potential avoidability of the referral by telephone consultation. Generalists were influenced by a combination of both medical and nonmedical reasons for 76% of the referrals, by only medical reasons in 20%, and by only nonmedical reasons in 3%. In 33% of all referrals, generalists felt that training in simple procedures or communication with a generalist or specialist colleague would have allowed them to avoid referral. Specialists felt that the vast majority of referrals were timely (as opposed to premature or delayed) and of average complexity. Although specialists rated most referrals as appropriate, 30% were rated as possibly appropriate or inappropriate. Generalists and specialists failed to agree on the avoidability of 34% of referrals.Conclusions: Generalists made most referrals for a combination of medical and nonmedical reasons, and many referrals were considered avoidable. Increasing procedural training for generalists and enhancing informal channels of communication between generalists and subspecialists might result in more appropriate referrals at lower cost. [ABSTRACT FROM AUTHOR]- Published
- 1999
- Full Text
- View/download PDF
34. In Vivo Assessment of Hepatic-Arterial and Portal-Venous Components of Liver Perfusion: Concise Communication.
- Author
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Fleming, J. S., Humphries, N. L. M., Karran, S. J., Goddard, B. A., and Ackery, D. M.
- Published
- 1981
35. Understanding and managing fish populations: keeping the toolbox fit for purpose
- Author
-
Paris, J. R., Sherman, K. D., Bell, E., Boulenger, C., Delord, C., El-Mahdi, M. B. M., Fairfield, E. A., Griffiths, A. M., Gutmann Roberts, C., Hedger, R. D., Holman, L. E., Hooper, L. H., Humphries, N. E., Katsiadaki, I., King, R. A., Lemopoulos, A., Payne, C. J., Peirson, G., Richter, K. K., Taylor, M. I., Trueman, C. N., Hayden, B., and Stevens, J. R.
- Full Text
- View/download PDF
36. Evidence-based restoration.
- Author
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Humphries N., Thompson R., Humphries N., and Thompson R.
- Abstract
Proposed biodiversity measures are frequently challenged by planning authorities or conservation agencies as inadequate or unattainable. The shift to an evidence-based approach by government dates from the late 1990s and is now fully embedded, so there is an inherent expectation that mineral development proposals will be backed by evidence such as monitoring data. Four generic forms of permissible evidence rank from case/field studies down through pilot studies to critical reviews/research, the least value being given to expert opinion because of the risk of bias or incomplete knowledge. There is also debate over what consitutes successful restoration to a target habitat and the time-scales involved, which might be 10-15 years for some grassland ecosystems but 250-300 years for some oak woodlands.The minerals industry needs to collect evidence from past reclamations of appropriate age and proactively to set up pilot and case-study schemes to provide evidence for future prospects. Strategic collaboration is also required to create a national repository of standardised records of past achievements., Proposed biodiversity measures are frequently challenged by planning authorities or conservation agencies as inadequate or unattainable. The shift to an evidence-based approach by government dates from the late 1990s and is now fully embedded, so there is an inherent expectation that mineral development proposals will be backed by evidence such as monitoring data. Four generic forms of permissible evidence rank from case/field studies down through pilot studies to critical reviews/research, the least value being given to expert opinion because of the risk of bias or incomplete knowledge. There is also debate over what consitutes successful restoration to a target habitat and the time-scales involved, which might be 10-15 years for some grassland ecosystems but 250-300 years for some oak woodlands.The minerals industry needs to collect evidence from past reclamations of appropriate age and proactively to set up pilot and case-study schemes to provide evidence for future prospects. Strategic collaboration is also required to create a national repository of standardised records of past achievements.
37. 280 one-opposition near-Earth asteroids recovered by the EURONEAR with the Isaac Newton Telescope
- Author
-
Vaduvescu, O., Hudin, L., Mocnik, T., Char, F., Sonka, A., Tudor, V., Ordonez-Etxeberria, I., Díaz Alfaro, M., Ashley, R., Errmann, R., Short, P., Moloceniuc, A., Cornea, R., Inceu, V., Zavoianu, D., Popescu, M., Curelaru, L., Mihalea, S., Stoian, A.-M., Boldea, A., Toma, R., Fields, L., Grigore, V., Stoev, H., Lopez-Martinez, F., Humphries, N., Sowicka, P., Ramanjooloo, Y., Manilla-Robles, A., Riddick, F. C., Jimenez-Lujan, F., Mendez, J., Aceituno, F., Sota, A., Jones, D., Hidalgo, S., Murabito, S., Oteo, I., Bongiovanni, A., Zamora, O., Pyrzas, S., Génova-Santos, R., Font, J., Bereciartua, A., Perez-Fournon, I., Martínez-Vázquez, C. E., Monelli, M., Cicuendez, L., Monteagudo, L., Agulli, I., Bouy, H., Huélamo, N., Monguió, M., Gänsicke, B. T., Steeghs, D., Gentile-Fusillo, N. P., Hollands, M. A., Toloza, O., Manser, C. J., Dhillon, V., Sahman, D., Fitzsimmons, A., McNeill, A., Thompson, A., Tabor, M., Murphy, D. N. A., Davies, J., Snodgrass, C., Triaud, A. H. M. J., Groot, P. J., Macfarlane, S., Peletier, R., Sen, S., İkiz, T., Hoekstra, H., Herbonnet, R., Köhlinger, F., Greimel, R., Afonso, A., Parker, Q. A., Kong, A. K. H., Bassa, C., Pleunis, Z., Vaduvescu, O., Hudin, L., Mocnik, T., Char, F., Sonka, A., Tudor, V., Ordonez-Etxeberria, I., Díaz Alfaro, M., Ashley, R., Errmann, R., Short, P., Moloceniuc, A., Cornea, R., Inceu, V., Zavoianu, D., Popescu, M., Curelaru, L., Mihalea, S., Stoian, A.-M., Boldea, A., Toma, R., Fields, L., Grigore, V., Stoev, H., Lopez-Martinez, F., Humphries, N., Sowicka, P., Ramanjooloo, Y., Manilla-Robles, A., Riddick, F. C., Jimenez-Lujan, F., Mendez, J., Aceituno, F., Sota, A., Jones, D., Hidalgo, S., Murabito, S., Oteo, I., Bongiovanni, A., Zamora, O., Pyrzas, S., Génova-Santos, R., Font, J., Bereciartua, A., Perez-Fournon, I., Martínez-Vázquez, C. E., Monelli, M., Cicuendez, L., Monteagudo, L., Agulli, I., Bouy, H., Huélamo, N., Monguió, M., Gänsicke, B. T., Steeghs, D., Gentile-Fusillo, N. P., Hollands, M. A., Toloza, O., Manser, C. J., Dhillon, V., Sahman, D., Fitzsimmons, A., McNeill, A., Thompson, A., Tabor, M., Murphy, D. N. A., Davies, J., Snodgrass, C., Triaud, A. H. M. J., Groot, P. J., Macfarlane, S., Peletier, R., Sen, S., İkiz, T., Hoekstra, H., Herbonnet, R., Köhlinger, F., Greimel, R., Afonso, A., Parker, Q. A., Kong, A. K. H., Bassa, C., and Pleunis, Z.
- Abstract
Context. One-opposition near-Earth asteroids (NEAs) are growing in number, and they must be recovered to prevent loss and mismatch risk, and to improve their orbits, as they are likely to be too faint for detection in shallow surveys at future apparitions. Aims. We aimed to recover more than half of the one-opposition NEAs recommended for observations by the Minor Planet Center (MPC) using the Isaac Newton Telescope (INT) in soft-override mode and some fractions of available D-nights. During about 130 h in total between 2013 and 2016, we targeted 368 NEAs, among which 56 potentially hazardous asteroids (PHAs), observing 437 INT Wide Field Camera (WFC) fields and recovering 280 NEAs (76% of all targets). Methods. Engaging a core team of about ten students and amateurs, we used the THELI, Astrometrica, and the Find_Orb software to identify all moving objects using the blink and track-and-stack method for the faintest targets and plotting the positional uncertainty ellipse from NEODyS. Results. Most targets and recovered objects had apparent magnitudes centered around V ~ 22.8 mag, with some becoming as faint as V ~ 24 mag. One hundred and three objects (representing 28% of all targets) were recovered by EURONEAR alone by Aug. 2017. Orbital arcs were prolonged typically from a few weeks to a few years; our oldest recoveries reach 16 years. The O−C residuals for our 1854 NEA astrometric positions show that most measurements cluster closely around the origin. In addition to the recovered NEAs, 22 000 positions of about 3500 known minor planets and another 10 000 observations of about 1500 unknown objects (mostly main-belt objects) were promptly reported to the MPC by our team. Four new NEAs were discovered serendipitously in the analyzed fields and were promptly secured with the INT and other telescopes, while two more NEAs were lost due to extremely fast motion and lack of rapid follow
38. 280 one-opposition near-Earth asteroids recovered by the EURONEAR with the Isaac Newton Telescope
- Author
-
Vaduvescu, O., Hudin, L., Mocnik, T., Char, F., Sonka, A., Tudor, V., Ordonez-Etxeberria, I., Díaz Alfaro, M., Ashley, R., Errmann, R., Short, P., Moloceniuc, A., Cornea, R., Inceu, V., Zavoianu, D., Popescu, M., Curelaru, L., Mihalea, S., Stoian, A.-M., Boldea, A., Toma, R., Fields, L., Grigore, V., Stoev, H., Lopez-Martinez, F., Humphries, N., Sowicka, P., Ramanjooloo, Y., Manilla-Robles, A., Riddick, F. C., Jimenez-Lujan, F., Mendez, J., Aceituno, F., Sota, A., Jones, D., Hidalgo, S., Murabito, S., Oteo, I., Bongiovanni, A., Zamora, O., Pyrzas, S., Génova-Santos, R., Font, J., Bereciartua, A., Perez-Fournon, I., Martínez-Vázquez, C. E., Monelli, M., Cicuendez, L., Monteagudo, L., Agulli, I., Bouy, H., Huélamo, N., Monguió, M., Gänsicke, B. T., Steeghs, D., Gentile-Fusillo, N. P., Hollands, M. A., Toloza, O., Manser, C. J., Dhillon, V., Sahman, D., Fitzsimmons, A., McNeill, A., Thompson, A., Tabor, M., Murphy, D. N. A., Davies, J., Snodgrass, C., Triaud, A. H. M. J., Groot, P. J., Macfarlane, S., Peletier, R., Sen, S., İkiz, T., Hoekstra, H., Herbonnet, R., Köhlinger, F., Greimel, R., Afonso, A., Parker, Q. A., Kong, A. K. H., Bassa, C., Pleunis, Z., Vaduvescu, O., Hudin, L., Mocnik, T., Char, F., Sonka, A., Tudor, V., Ordonez-Etxeberria, I., Díaz Alfaro, M., Ashley, R., Errmann, R., Short, P., Moloceniuc, A., Cornea, R., Inceu, V., Zavoianu, D., Popescu, M., Curelaru, L., Mihalea, S., Stoian, A.-M., Boldea, A., Toma, R., Fields, L., Grigore, V., Stoev, H., Lopez-Martinez, F., Humphries, N., Sowicka, P., Ramanjooloo, Y., Manilla-Robles, A., Riddick, F. C., Jimenez-Lujan, F., Mendez, J., Aceituno, F., Sota, A., Jones, D., Hidalgo, S., Murabito, S., Oteo, I., Bongiovanni, A., Zamora, O., Pyrzas, S., Génova-Santos, R., Font, J., Bereciartua, A., Perez-Fournon, I., Martínez-Vázquez, C. E., Monelli, M., Cicuendez, L., Monteagudo, L., Agulli, I., Bouy, H., Huélamo, N., Monguió, M., Gänsicke, B. T., Steeghs, D., Gentile-Fusillo, N. P., Hollands, M. A., Toloza, O., Manser, C. J., Dhillon, V., Sahman, D., Fitzsimmons, A., McNeill, A., Thompson, A., Tabor, M., Murphy, D. N. A., Davies, J., Snodgrass, C., Triaud, A. H. M. J., Groot, P. J., Macfarlane, S., Peletier, R., Sen, S., İkiz, T., Hoekstra, H., Herbonnet, R., Köhlinger, F., Greimel, R., Afonso, A., Parker, Q. A., Kong, A. K. H., Bassa, C., and Pleunis, Z.
- Abstract
Context. One-opposition near-Earth asteroids (NEAs) are growing in number, and they must be recovered to prevent loss and mismatch risk, and to improve their orbits, as they are likely to be too faint for detection in shallow surveys at future apparitions. Aims. We aimed to recover more than half of the one-opposition NEAs recommended for observations by the Minor Planet Center (MPC) using the Isaac Newton Telescope (INT) in soft-override mode and some fractions of available D-nights. During about 130 h in total between 2013 and 2016, we targeted 368 NEAs, among which 56 potentially hazardous asteroids (PHAs), observing 437 INT Wide Field Camera (WFC) fields and recovering 280 NEAs (76% of all targets). Methods. Engaging a core team of about ten students and amateurs, we used the THELI, Astrometrica, and the Find_Orb software to identify all moving objects using the blink and track-and-stack method for the faintest targets and plotting the positional uncertainty ellipse from NEODyS. Results. Most targets and recovered objects had apparent magnitudes centered around V ~ 22.8 mag, with some becoming as faint as V ~ 24 mag. One hundred and three objects (representing 28% of all targets) were recovered by EURONEAR alone by Aug. 2017. Orbital arcs were prolonged typically from a few weeks to a few years; our oldest recoveries reach 16 years. The O−C residuals for our 1854 NEA astrometric positions show that most measurements cluster closely around the origin. In addition to the recovered NEAs, 22 000 positions of about 3500 known minor planets and another 10 000 observations of about 1500 unknown objects (mostly main-belt objects) were promptly reported to the MPC by our team. Four new NEAs were discovered serendipitously in the analyzed fields and were promptly secured with the INT and other telescopes, while two more NEAs were lost due to extremely fast motion and lack of rapid follow
39. Comparative biliary excretion of cephalosporins in normal and partially hepatectomized rats
- Author
-
Humphries, N L, primary, Tasker, D G, additional, and Karran, S J, additional
- Published
- 1982
- Full Text
- View/download PDF
40. A 10 year (2000–2010) systematic review of interventions to improve quality of care in hospitals
- Author
-
Conry Mary C, Humphries Niamh, Morgan Karen, McGowan Yvonne, Montgomery Anthony, Vedhara Kavita, Panagopoulou Efharis, and Mc Gee Hannah
- Subjects
Quality of care ,Hospitals ,Interventions ,Quality improvement ,Public aspects of medicine ,RA1-1270 - Abstract
Background Against a backdrop of rising healthcare costs, variability in care provision and an increased emphasis on patient satisfaction, the need for effective interventions to improve quality of care has come to the fore. This is the first ten year (2000–2010) systematic review of interventions which sought to improve quality of care in a hospital setting. This review moves beyond a broad assessment of outcome significance levels and makes recommendations for future effective and accessible interventions. Methods Two researchers independently screened a total of 13,195 English language articles from the databases PsychInfo, Medline, PubMed, EmBase and CinNahl. There were 120 potentially relevant full text articles examined and 20 of those articles met the inclusion criteria. Results Included studies were heterogeneous in terms of approach and scientific rigour and varied in scope from small scale improvements for specific patient groups to large scale quality improvement programmes across multiple settings. Interventions were broadly categorised as either technical (n = 11) or interpersonal (n = 9). Technical interventions were in the main implemented by physicians and concentrated on improving care for patients with heart disease or pneumonia. Interpersonal interventions focused on patient satisfaction and tended to be implemented by nursing staff. Technical interventions had a tendency to achieve more substantial improvements in quality of care. Conclusions The rigorous application of inclusion criteria to studies established that despite the very large volume of literature on quality of care improvements, there is a paucity of hospital interventions with a theoretically based design or implementation. The screening process established that intervention studies to date have largely failed to identify their position along the quality of care spectrum. It is suggested that this lack of theoretical grounding may partly explain the minimal transfer of health research to date into policy. It is recommended that future interventions are established within a theoretical framework and that selected quality of care outcomes are assessed using this framework. Future interventions to improve quality of care will be most effective when they use a collaborative approach, involve multidisciplinary teams, utilise available resources, involve physicians and recognise the unique requirements of each patient group.
- Published
- 2012
- Full Text
- View/download PDF
41. Irish Trainees Continuing to Emigrate.
- Author
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Brugha, R., Crowe, S., and Humphries, N.
- Published
- 2015
42. 'I won't be staying here for long': a qualitative study on the retention of migrant nurses in Ireland
- Author
-
McGee Hannah, Brugha Ruairi, and Humphries Niamh
- Subjects
Medicine (General) ,R5-920 ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Although international nurse recruitment campaigns have succeeded in attracting large numbers of migrant nurses to countries such as Ireland, where domestic supply has not kept pace with demand, the long-term success of such initiatives from a workforce planning perspective will depend on the extent to which these nurses can be retained in destination countries. Methods This paper draws on qualitative, in-depth interviews undertaken with 21 migrant nurses in Ireland, focusing specifically on their future migration intentions. Results Our findings indicate that more than half of the respondents are considering migration onwards, for the most part because the destination country has failed to provide them with sufficient stability, particularly in terms of citizenship and family reunification. In considering onward migration, factors outside the health system were of most concern to those interviewed. Conclusion This demonstrates the need for destination countries to take a broader and more long-term approach to international nurse recruitment, rather than regarding it as an inexpensive way to fill gaps within the health care system.
- Published
- 2009
- Full Text
- View/download PDF
43. Sending money home: a mixed-Methods study of remittances by migrant nurses in Ireland
- Author
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McGee Hannah, Brugha Ruairí, and Humphries Niamh
- Subjects
Medicine (General) ,R5-920 ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background This paper presents data on the remittances sent by migrant nurses to their families "back home". It gives voice to the experiences of migrant nurses and illustrates the financial obligations they maintain while working overseas. Although the international economic recession has decreased global remittance flows, they remain resilient. Drawing on the experiences of migrant nurses in Ireland, this paper indicates how and why migrants strive to maintain remittance flows, even in an economic downturn. Methods A mixed-methods approach was employed, and the paper draws on data from qualitative in-depth interviews undertaken with 21 migrant nurses in addition to a quantitative survey of 336 migrant nurses in Ireland. Results The survey of migrant nurses revealed that 87% (293) of the sample sent remittances on a regular basis. According to respondents, remittances made a huge difference in the lives of their family members back home. Remittances were used to ensure that family members could obtain access to health and education services. They were also used to provide an income source for family members who were unemployed or retired. As remittances played an essential role in supporting family members back home, respondent migrant nurses were reluctant to reduce the level of their remittances, despite the onset of a global recession. Respondents noted that an increased demand for remittances from their families coincided with a reduction in their own net salaries – as a result of increased taxes and reduced availability of overtime – and this was a cause for concern for Ireland's migrant nurses. Conclusion This paper provides insights into the importance of remittances in funding social support for family members in home countries. It also illustrates the sacrifices made by migrant nurses to ensure continuation of the remittances, particularly in the context of an economic recession.
- Published
- 2009
- Full Text
- View/download PDF
44. ELECTRONIC TAGGING OF CUTTLEFISH Sepia officinalis AND OCTOPUS Eledone cirrhosa TO STUDY COMMONALITIES IN BEHAVIOUR PATTERNS AND COMPARISONS WITH MARINE FISH.
- Author
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Sims, D. W., Humphries, N. E., McHugh, M., and Wearmouth, V. J.
- Published
- 2011
45. Acute Focal Dystonia as a Presentation of Uncontrolled Hyperglycemia.
- Author
-
Humphries N and Gogia B
- Abstract
Hyperglycemia-induced involuntary movements (HIIM) include tremors, hemichorea-hemiballismus (HCHB), and more rarely, dystonia. Presentations may vary, but hyperintensity involving the basal ganglia area on the T1 sequence of MRI brain remains a commonality. We report the occurrence of focal dystonia with uncontrolled hyperglycemia but no focal abnormalities on MRI. On admission, the patient's blood glucose was 861, and she claimed to have never missed insulin dosage. A physical exam revealed no cranial nerve abnormalities and weakness in the right upper extremity with no sensory involvement. Reflexes were 1-2+ in all extremities with down-going toes. The abnormal movements were triggered by overhead abduction of the right arm. Symptoms improved after a week with blood glucose control, as well as benzodiazepines and anticholinergics. This specific case emphasizes the occurrence of uncontrolled hyperglycemia causing movement disorders that can have normal imaging findings. Understanding the complex presentation of patients with HIIM is pivotal for effective patient diagnosis and treatment., Competing Interests: Human subjects: Consent was obtained or waived by all participants in this study. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work., (Copyright © 2024, Humphries et al.)
- Published
- 2024
- Full Text
- View/download PDF
46. Demographic, Environmental, and Psychosocial Influences on Resilience Toward Chronic Stress.
- Author
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Johnson S, Tunison L, Thiruppathi N, Humphries N, and Cernak I
- Abstract
As studied previously, chronic stress environments lead to the formation of distinctive resilience groupings when related to individual outcomes among participants. The majority of the population has decreased mental and physical strength during prolonged periods of mental distress but returns to baseline status when those stressors are removed. Others have increased and decreased mental fortitude despite the removal of stressors. Our hypothesis is that certain demographic, environmental, and/or transgenerational aspects are associated with resilience or lack thereof in populations with a history of chronic stress. The end goal is the early identification of at-risk populations to decrease adverse outcomes and improve quality of life. In this review, we looked at 17 studies to gain a greater understanding of which factors influence individual resilience. The factors found to have a positive relationship with resilience were religion, cognitive function, socioeconomic status, marriage, psychological functioning, positive coping mechanisms, and relationships; the negative were medical diagnoses, violence exposure, female sex, stressors/trauma, disaster exposure, and negative coping mechanisms. During our research, we found that transgenerational aspects such as race/ethnicity, occupation, education, age, substance use, and physical location had mixed results across multiple studies. These findings suggest the need for future original research to allow for a definitive understanding of populations resilient to chronic stress., Competing Interests: Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work., (Copyright © 2024, Johnson et al.)
- Published
- 2024
- Full Text
- View/download PDF
47. "They say they listen. But do they really listen?": A qualitative study of hospital doctors' experiences of organisational deafness, disconnect and denial.
- Author
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Creese J, Byrne JP, Conway E, O'Connor G, and Humphries N
- Abstract
The sharing of information and feedback directly from service-providing staff to healthcare organisational management is vital for organisational culture and service improvement. However, hospital doctors report feeling unable to communicate effectively with management to provide evidence and affect improvement, and this can impact job satisfaction, workplace relations, service delivery and ultimately patient safety. In this paper, we draw on data elicited from a Mobile Instant Messaging Ethnography (MIME) study involving 28 hospital doctors working in Irish hospitals, to explore the barriers preventing them from speaking up and effecting change, and the impact of this on staff morale and services. We identify three major barriers, consistent with previous literature, to effective feedback and communication: (1) organisational deafness, (2) disconnect between managers and frontline staff, and (3) denial of the narratives and issues raised. We draw these together to identify key implications from these findings for healthcare managers, and suggest policy and practice improvements., Competing Interests: Declaration of conflicting interestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
- Published
- 2024
- Full Text
- View/download PDF
48. COVID-19 and healthcare worker mental well-being: Comparative case studies on interventions in six countries.
- Author
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Byrne JP, Humphries N, McMurray R, and Scotter C
- Subjects
- Humans, Mental Health, Pandemics prevention & control, Health Personnel psychology, Psychological Well-Being, COVID-19
- Abstract
Healthcare worker (HCW) mental well-being has become a global public health priority as health systems seek to strengthen their resilience in the face of the COVID-19 pandemic. Analysing data from the Health System Response Monitor, we present six case studies (Denmark, Italy, Kyrgyzstan, Lithuania, Romania, and the United Kingdom) as a comparative review of policy interventions supporting HCW mental health during the pandemic. The results illustrate a wide range of interventions. While Denmark and the United Kingdom built on pre-existing structures to support HCW mental wellbeing during the pandemic, the other countries required new interventions. Across all cases, there was a reliance on self-care resources, online training tools, and remote professional support. Based on our analysis, we develop four policy recommendations for the future of HCW mental health supports. First, HCW mental health should be seen as a core facet of health workforce capacity. Second, effective mental health supports requires an integrated psychosocial approach that acknowledges the importance of harm prevention strategies and organisational resources (psychological first aid) alongside targeted professional interventions. Third, personal, professional and practical obstacles to take-up of mental health supports should be addressed. Fourth, any specific support or intervention targeting HCW's mental health is connected to, and dependent on, wider structural and employment factors (e.g. system resourcing and organisation) that determine the working conditions of HCWs., Competing Interests: Declaration of Competing Interest None., (Copyright © 2023 The Author(s). Published by Elsevier B.V. All rights reserved.)
- Published
- 2023
- Full Text
- View/download PDF
49. Feeling like the enemy: the emotion management and alienation of hospital doctors.
- Author
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Byrne JP, Creese J, McMurray R, Costello RW, Matthews A, and Humphries N
- Abstract
Introduction: Globally, an epidemic of psychological distress, burnout, and workforce attrition signify an acute deterioration in hospital doctors' relationship with their work-intensified by COVID-19. This deterioration is more complicated than individual responses to workplace stress, as it is heavily regulated by social, professional, and organizational structures. Moving past burnout as a discrete "outcome," we draw on theories of emotion management and alienation to analyze the strategies through which hospital doctors continue to provide care in the face of resource-constraints and psychological strain., Methods: We used Mobile Instant Messaging Ethnography (MIME), a novel form of remote ethnography comprising a long-term exchange of digital messages to elicit "live" reflections on work-life experiences and feelings., Results: The results delineate two primary emotion-management strategies-acquiescence and depersonalization-used by the hospital doctors to suppress negative feelings and emotions (e.g., anger, frustration, and guilt) stemming from the disconnect between professional norms of expertise and self-sacrifice, and organizational realities of impotence and self-preservation., Discussion: Illustrating the continued relevant of alienation, extending its application to doctors who disconnect to survive, we show how the socio-cultural ideals of the medical profession (expertise and self-sacrifice) are experienced through the emotion-management and self-estrangement of hospital doctors. Practically, the deterioration of hospital doctors' relationship with work is a threat to health systems and organizations. The paper highlights the importance of understanding the social structures and disconnects that shape this deteriorating relationship and the broad futility of self-care interventions embedded in work contexts of unrealized professional ideals, organizational resource deficits and unhappy doctors, patients, and families., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Byrne, Creese, McMurray, Costello, Matthews and Humphries.)
- Published
- 2023
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50. A catalyst for change: Developing a collaborative reflexive ethnographic approach to research with hospital doctors during the COVID-19 pandemic.
- Author
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Creese J, Byrne JP, Olson R, and Humphries N
- Abstract
The understanding of what ethnography looks like, and its purpose, is continuously evolving. COVID-19 posed a significant challenge to ethnographers, particularly those working in health-related research. Researchers have developed alternative forms of ethnography to overcome some of these challenges; we developed the Mobile Instant Messaging Ethnography (MIME) adaptation to ethnography in 2021 to overcome restrictions to our own research with hospital doctors. However, for ethnographic innovations to make a substantial contribution to methodology, they should not simply be borne of necessity, but of a dedicated drive to expand paradigms of research, to empower participant groups and to produce change - in local systems, in participant-collaborators and in researchers and the research process itself. In this paper, we reflect on our experiences using MIME, involving collaborative remote observation and reflection with 28 hospital doctors in Ireland from June to December 2021. After reviewing literature on ethnography in COVID-19 and general epistemological developments in ethnography, we detail the MIME approach and illustrate how MIME presents an evolution of the ethnographic approach, not only practically but in terms of its reflexive shift, its connected and co-creative foundations, and its ability to drive change in research approaches, participant life-worlds and real-world improvement., Competing Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article., (© The Author(s) 2022.)
- Published
- 2022
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