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886 results on '"Chang, W.C."'

1. Impact of restrictive COVID-19 measures on daily momentary affect in an epidemiological youth sample in Hong Kong: An experience sampling study

Author

Wong, Stephanie M. Y., Li, Yandy Y., Hui, Christy L. M., Wong, Corine S. M., Wong, T. Y., Cheung, Charlton, Suen, Y. N., Lam, Bess Y.H., Lui, Simon S.Y., Chan, K.T., Wong, Michael T.H., Chan, Sherry K.W., Chang, W.C., Lee, Edwin H.M., Myin-Germeys, Inez, and Chen, Eric Y.H.

Subjects
Psychology and mental health
Abstract

Restrictive COVID-19 measures can have significant mental health impacts, particularly on young people. How such measures may influence day-to-day momentary affect, nonetheless, remains to be explored. Experience sampling data were collected from 165 young people (aged 15-24) as part of a larger epidemiological youth mental health study in Hong Kong. We examined the impact of one of the most stringent COVID-19 measures - dine-in restrictions - on momentary positive and negative affect and current contexts and activities of these young people. The effects of a milder form of COVID-19 measure - school suspension - were separately examined. Multilevel analysis revealed that those in the dine-in ban group, compared to dining-as-usual, showed significantly reduced momentary positive affect ([beta] = -0.17, SE = 0.06, p = 0.003). Its effect remained significant even when accounting for baseline depressive and anxiety symptoms and socioeconomic status ([beta] = -0.15, SE = 0.05, p = 0.008). The effect of dine-in ban on reduced momentary positive affect was found specifically when participants were in indoor locations (e.g., home, office), alone, and engaged in passive leisure activities. This pattern was not observed when participants were at school or at other outdoor locations, with friends, or engaged in active leisure activities. No significant effect of school suspension on momentary affect was observed. More severe COVID-19 measures, such as dine-in ban, can have significant impacts on the momentary positive affect of young people. Certain contexts and activities may offer protection against the consequences of COVID-19 measures. The current findings may help to inform future designs of mental health interventions and public health policies., Author(s): Stephanie M. Y. Wong [sup.1] , Yandy Y. Li [sup.1] , Christy L. M. Hui [sup.1] , Corine S. M. Wong [sup.1] , T. Y. Wong [sup.1] , Charlton [...]

Published
2023
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3. Prevalence, time trends, and correlates of major depressive episode and other psychiatric conditions among young people amid major social unrest and COVID-19 in Hong Kong: a representative epidemiological study from 2019 to 2022

Author

Wong, Stephanie M.Y., Chen, Eric Y.H., Suen, Y.N., Wong, Corine S.M., Chang, W.C., Chan, Sherry K.W., McGorry, Patrick D., Morgan, Craig, van Os, Jim, McDaid, David, Jones, Peter B., Lam, T.H., Lam, Linda C.W., Lee, Edwin H.M., Tang, Eric Y.H., Ip, Charlie H., Ho, Winky W.K., McGhee, Sarah M., Sham, P.C., and Hui, Christy L.M.

Published
2023
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6. SPring-8 LEPS2 beamline: A facility to produce a multi-GeV photon beam via laser Compton scattering

Author

Muramatsu, N., Yosoi, M., Yorita, T., Ohashi, Y., Ahn, J.K., Ajimura, S., Asano, Y., Chang, W.C., Chen, J.Y., Daté, S., Gogami, T., Hamano, H., Hashimoto, T., Hiraiwa, T., Hotta, T., Ishikawa, T., Kasamatsu, Y., Katsuragawa, H., Kobayakawa, R., Kohri, H., Masumoto, S., Matsumura, Y., Miyabe, M., Mizutani, K., Morino, Y., Nakano, T., Nam, T., Niiyama, M., Nozawa, Y., Ohkuma, H., Ohnishi, H., Ohta, T., Oishi, M., Ozawa, K., Ryu, S.Y., Sada, Y., Saito, H., Shibukawa, T., Shimizu, H., Shirai, R., Shoji, M., Sumihama, M., Suzuki, S., Tanaka, S., Taniuchi, Y., Tokiyasu, A.O., Tomida, N., Tsuchikawa, Y., Watanabe, K., Yoon, C.J., and Yoshida, C.

Published
2022
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9. The asymmetry of antimatter in the proton

Author

Dove, J., Kerns, B., McClellan, R. E., Miyasaka, S., Morton, D. H., Nagai, K., Prasad, S., Sanftl, F., Scott, M.B.C., Tadepalli, A.S., Aidala, C.A., Arrington, J., Ayuso, C., Barker, C.L., Brown, C.N., Chang, W.C., and Chen, A.

Subjects
Protons -- Structure, Antimatter -- Structure, Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

The fundamental building blocks of the proton--quarks and gluons--have been known for decades. However, we still have an incomplete theoretical and experimental understanding of how these particles and their dynamics give rise to the quantum bound state of the proton and its physical properties, such as its spin.sup.1. The two up quarks and the single down quark that comprise the proton in the simplest picture account only for a few per cent of the proton mass, the bulk of which is in the form of quark kinetic and potential energy and gluon energy from the strong force.sup.2. An essential feature of this force, as described by quantum chromodynamics, is its ability to create matter-antimatter quark pairs inside the proton that exist only for a very short time. Their fleeting existence makes the antimatter quarks within protons difficult to study, but their existence is discernible in reactions in which a matter-antimatter quark pair annihilates. In this picture of quark-antiquark creation by the strong force, the probability distributions as a function of momentum for the presence of up and down antimatter quarks should be nearly identical, given that their masses are very similar and small compared to the mass of the proton.sup.3. Here we provide evidence from muon pair production measurements that these distributions are considerably different, with more abundant down antimatter quarks than up antimatter quarks over a wide range of momenta. These results are expected to revive interest in several proposed mechanisms for the origin of this antimatter asymmetry in the proton that had been disfavoured by previous results.sup.4, and point to future measurements that can distinguish between these mechanisms. Quark-antiquark annihilation measurements provide a precise determination of the ratio of down and up antiquarks within protons as a function of momentum, which confirms the asymmetry between the abundance of down and up antiquarks., Author(s): J. Dove [sup.1] , B. Kerns [sup.1] , R. E. McClellan [sup.1] [sup.18] , S. Miyasaka [sup.2] , D. H. Morton [sup.3] , K. Nagai [sup.2] [sup.4] , S. [...]

Published
2021
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22. Measurement of J/ψ and [formula omitted] production in p + p and p + d interactions at 120 GeV

Author

Leung, C.H., Nagai, K., Nakano, K., Nawarathne, D., Dove, J., Prasad, S., Wuerfel, N., Aidala, C.A., Arrington, J., Ayuso, C., Barker, C.L., Brown, C.N., Chang, W.C., Chen, A., Christian, D.C., Dannowitz, B.P., Daugherity, M., El Fassi, L., Geesaman, D.F., Gilman, R., Goto, Y., Guo, R., Hague, T.J., Holt, R.J., Hossain, M.F., Isenhower, D., Kinney, E., Klein, A., Kleinjan, D.W., Kudo, Y., Lin, P.-J., Liu, K., Liu, M.X., Lorenzon, W., McClellan, R.E., McGaughey, P.L., Medeiros, M.M., Miyachi, Y., Miyasaka, S., Morton, D.H., Nakahara, K., Nara, S., Pate, S.F., Peng, J.C., Pun, A., Ramson, B.J., Reimer, P.E., Rubin, J.G., Sanftl, F., Sawada, S., Sawada, T., Scott, M.B.C., Shibata, T.-A., Tadepalli, A.S., Teo, M., Towell, R.S., Uemura, S., Wang, S.G., Wickes, A.B., Wu, J., and Ye, Z.H.

Published
2024
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23. Contributors

Author

Addington, Jean, primary, Al-Diwani, Adam, additional, Albert, Nikolai, additional, Allott, Kelly, additional, Armando, Marco, additional, Barrantes-Vidal, Neus, additional, Bechdolf, A., additional, Bhattacharyya, Sagnik, additional, Burkhardt, E., additional, Cannon, Mary, additional, Chan, Stella W.Y., additional, Chan, Sherry K.W., additional, Chang, W.C., additional, Chen, Eric Y.H., additional, Colizzi, Marco, additional, Corsico, Paolo, additional, Devoe, Daniel J., additional, Donoghue, Brian O., additional, Eliez, Stephan, additional, Flückiger, Rahel, additional, Gifford, George, additional, Glenthøj, Louise Birkedal, additional, Hartmann, Jessica A., additional, Healy, Colm, additional, Hui, Christy L.M., additional, Jones, Hannah J., additional, Jones, Peter B., additional, Kwapil, Thomas R., additional, Lawrie, Stephen M., additional, Lee, Edwin H.M., additional, Leopold, K., additional, Lin, Ashleigh, additional, Macdonald, Alix, additional, McCutcheon, Robert, additional, McGorry, Patrick D., additional, McGuire, Philip, additional, McIntosh, Andrew M., additional, Mei, Cristina, additional, Michel, Chantal, additional, Modinos, Gemma, additional, Morgan, Craig, additional, Nelson, Barnaby, additional, Nordentoft, Merete, additional, Oliver, Dominic, additional, Perez, Jesus, additional, Piskulic, Danijela, additional, Pollak, Thomas A., additional, Racioppi, Anna, additional, Ratheesh, Aswin, additional, Roberts, Tessa, additional, Romaniuk, Liana, additional, Sandini, Corrado, additional, Santesteban-Echarri, Olga, additional, Schneider, Maude, additional, Schultze-Lutter, Frauke, additional, Singh, Ilina, additional, Soneson, Emma, additional, Spooner, Rachael, additional, Stowkowy, Jacqueline, additional, Suen, Y.N., additional, Sussmann, Jessika E., additional, Theodoridou, Anastasia, additional, Thompson, Andrew D., additional, Walters, James T.R., additional, Whalley, Heather C., additional, Yung, Alison R., additional, and Zammit, Stanley, additional

Published
2020
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28. Collins and Sivers transverse-spin asymmetries in inclusive muoproduction of Mesons

Author

Alexeev, G.D., Alexeev, M.G., Alice, C., Amoroso, A., Andrieux, V., Anosov, V., Augsten, K., Augustyniak, W., Azevedo, C.D.R., Badelek, B., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bodlak, M., Bradamante, F., Bressan, A., Burtsev, V.E., Chang, W.C., Chatterjee, C., Chiosso, M., Chumakov, A.G., Chung, S.U., Cicuttin, A., Correia, P.M.M., Crespo, M.L., D'Ago, D., Dalla Torre, S., Dasgupta, S.S., Dasgupta, S., Del Carro, F., Denisenko, I., Denisov, O.Yu., Donskov, S.V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R.R., Ecker, D., Efremov, A., Elia, C., Eremeev, D., Faccioli, P., Faessler, M., Finger, M., Fischer, H., Flöthner, K.J., Florian, W., Friedrich, J.M., Frolov, V., Garcia Ordòñez, L.G., Gautheron, F., Gavrichtchouk, O.P., Gerassimov, S., Giarra, J., Giordano, D., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Grüner, M., Guskov, A., von Harrach, D., Hoffmann, M., Horikawa, N., d'Hose, N., Hsieh, C.Y., Huber, S., Ishimoto, S., Ivanov, A., Iwata, T., Jandek, M., Jary, V., Joosten, R., Kabuß, E., Kaspar, F., Kerbizi, A., Ketzer, B., Khatun, A., Khaustov, G.V., Klein, F., Koivuniemi, J.H., Kolosov, V.N., Kondo Horikawa, K., Konorov, I., Konstantinov, V.F., Korzenev, A.M., Kotzinian, A.M., Kouznetsov, O.M., Koval, A., Kral, Z., Krinner, F., Kunne, F., Kurek, K., Kurjata, R.P., Kveton, A., Lavickova, K., Levorato, S., Lian, Y.S., Lichtenstadt, J., Lin, P.J., Longo, R., Lyubovitskij, V.E., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G.K., Maltsev, A., Mamon, S.A., Martin, A., Marzec, J., Matoušek, J., Matsuda, T., Mattson, G., Menezes Pires, C., Metzger, F., Meyer, M., Meyer, W., Mikhailov, Yu.V., Mikhasenko, M., Mitrofanov, E., Miura, D., Miyachi, Y., Molina, R., Moretti, A., Nagaytsev, A., Naim, C., Neyret, D., Nový, J., Nowak, W.D., Nukazuka, G., Olshevsky, A.G., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Pekeler, H., Peng, J.C., Pešek, M., Peshekhonov, D.V., Pešková, M., Platchkov, S., Pochodzalla, J., Polyakov, V.A., Quaresma, M., Quintans, C., Reicherz, G., Riedl, C., Rudnicki, T., Ryabchikov, D.I., Rychter, A., Rymbekova, A., Samoylenko, V.D., Sandacz, A., Sarkar, S., Savin, I.A., Sbrizzai, G., Schmieden, H., Selyunin, A., Sharko, K., Sinha, L., Slunecka, M., Sozzi, F., Spülbeck, D., Srnka, A., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Townsend, A., Triloki, T., Tskhay, V., Valinoti, B., Veit, B.M., Veloso, J.F.C.A., Ventura, B., Virius, M., Wagner, M., Wallner, S., Zaremba, K., Zavertyaev, M., Zemko, M., Zemlyanichkina, E., and Ziembicki, M.

Abstract

The production of vector mesons in deep inelastic scattering is an interesting yet scarcely explored channel to study the transverse spin structure of the nucleon and the spin-dependence of fragmentation. The COMPASS collaboration has performed the first measurement of the Collins and Sivers asymmetries for inclusively produced ρ0 mesons. The analysis is based on the data set collected in deep inelastic scattering in 2010 using a 160GeV/c μ+ beam impinging on a transversely polarized NH3 target. The ρ0 mesons are selected from oppositely charged hadron pairs, and the asymmetries are extracted as a function of the Bjorken-x variable, the transverse momentum of the pair and the fraction of the energy z carried by the pair. Indications for positive Collins and Sivers asymmetries are observed.

Published
2023

32. Towards the Measurement of the Mass Modifications of Vector Mesons in a Finite Density Matter

Author

Ozawa, K., primary, Aoki, K., additional, Arimizu, D., additional, Ashikaga, S., additional, Chang, W.C., additional, Chujo, T., additional, Ebata, K., additional, En'yo, H., additional, Esumi, S., additional, Hamagaki, H., additional, Honda, R., additional, Ichikawa, M., additional, Kajikawa, S., additional, Kanno, K., additional, Kimura, Y., additional, Kiyomichi, A., additional, Kondo, T.K., additional, Kyan, S., additional, Lin, C.H., additional, Lin, C.S., additional, Morino, Y., additional, Murakami, H., additional, Murakami, T.N., additional, Muto, R., additional, Nakai, W., additional, Nakasuga, S., additional, Naruki, M., additional, Nonaka, T., additional, Noumi, H., additional, Sakaguchi, T., additional, Sako, H., additional, Sakuma, F., additional, Sato, S., additional, Sawada, S., additional, Sekimoto, M., additional, Shigaki, K., additional, Shirotori, K., additional, Sugimura, H., additional, Takahashi, T.N., additional, Takaura, Y., additional, Tatsumi, R., additional, Tsukui, K., additional, Wang, P.H., additional, Yahiro, K., additional, Yamaguchi, K.H., additional, and Yokkaichi, S., additional

Published
2022
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41. Predicting 1-year risk for relapse in patients who have discontinued or continued quetiapine after remission from first-episode psychosis

Author

Hui, Christy L.M., Wong, Gloria H.Y., Tang, Jennifer Y.M., Chang, W.C., Chan, Sherry K.W., Lee, Edwin H.M., Lam, May M.L., Chiu, Cindy P.Y., Law, C.W., Chung, Dicky W.S., Tso, Steve, Pang, Edwin P.F., Chan, K.T., Wong, Y.C., Mo, Flora Y.M., Chan, Kathy P.M., Hung, S.F., Honer, William G., and Chen, Eric Y.H.

Published
2013
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