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We introduce and discuss Jones pairs. These provide a generalization and a new approach to the four-weight spin models of Bannai and Bannai. We show that each four-weight spin model determines a “dual” pair of association schemes. 1. Jones Pairs The space of k × k matrices acts on itself in three distinct ways: if C ∈ Mk(F), we can define endomorphisms XC ,… (More)

- Yue Yang, Weiyuan Zhang, +6 authors Xiuhua Guo
- Aviation, space, and environmental medicine
- 2013

OBJECTIVE
To investigate the correlations between occupational risk factors and reproductive health and to provide targeted healthcare services to female civil aviation employees based on surveys about menstrual and reproductive health status.
METHODS
Subjects were selected from flight attendants working for China Southern Airlines, Air China, and other… (More)

- Ada Chan, Chris D. Godsil
- J. Comb. Theory, Ser. A
- 2004

Abstract. In 1989, Vaughan Jones introduced spin models and showed that they could be used to form link invariants in two different ways—by constructing representations of the braid group, or by constructing partition functions. These spin models were subsequently generalized to so-called 4-weight spin models by Bannai and Bannai; these could be used to… (More)

- Jennifer E Cohen, David Laing, Fiona J. Wilkes, Ada Chan, Melissa Gabriel, Richard Jules Cohn
- Appetite
- 2014

INTRODUCTION
Reduced or altered taste and smell function may occur as a side-effect of cancer therapy. This can lead to altered nutrient and energy intake. Some studies have suggested that taste and smell dysfunction can persist many years after treatment completion but this has not been previously assessed in survivors of childhood cancer. The aim of this… (More)

- Ada Chan
- 2013

This study was conducted with the following purposes: 1) to assess the concurrent validity and reliability of the BIQ-C, 2) to get information on the background, demographic data and the lifestyle of adults with ID in Hong Kong shelter workshop, and 3) to get information on physical activity behaviour and psychosocial behaviour of adults with ID in Hong… (More)

- Ada Chan, Rie Hosoya
- 2004

We determine the Nomura algebras of the type-II matrices belonging to the Bose-Mesner algebra of a conference graph. 1 Type-II Matrices and Nomura Algebras We say that an n × n matrix W with complex entries is type II if W (j, i)(W)(i, j) = 1 n for i, j = 1, . . . , n. So a type-II matrix is invertible and has no zero entry. We use I and J to denote the… (More)

- K. B. LUK, R . A . Burnstein, +10 authors Poh K Teng
- 2000

R. A. Burnstein, A. Chakravorty, A. Chan, Y. C. Chen, W. S. Choong, K. Clark, T. Diehl, E. C. Dukes, C. Durandet, J. Duryea, J. Felix, G. Gidal, G. Guglielmo, H. R. Gustafson, K. Heller, C. Ho, P. M. Ho, T. Holmstrom, M. Huang, C. James, M. Jenkins, K. Johns, T. Jones, D. M. Kaplan, L. M. Lederman, N. Leros, F. Lopez, M. J. Longo, L. Lu, W. Luebke, K.… (More)

- Dinesh Rajaram, Timothy Holmstrom, +16 authors Poh K Teng
- 2016

A sensitive search for the lepton-number-violating decay Ξ → pμμ has been performed using a sample of ∼ 10 Ξ hyperons produced in 800GeV/c p-Cu collisions. We obtain B(Ξ → pμμ) < 4.0 × 10 at 90% confidence, improving on the best previous limit by four orders of magnitude. PACS numbers: 13.30.Ce, 11.30.Hv, 14.20.Jn, 14.60.St

- Ethan Ackelsberg, Zachary Brehm, Ada Chan, Joshua Mundinger, Christino Tamon
- Electr. J. Comb.
- 2017

We study state transfer in quantum walks on graphs relative to the adjacency matrix. Our motivation is to understand how the addition of pendant subgraphs affect state transfer. For two graphs G and H, the Frucht-Harary corona product G ◦H is obtained by taking |G| copies of the cone K1 + H and by identifying the conical vertices according to G. Our work… (More)

- Ada Chan, Chris D. Godsil
- 2001

We introduce and discuss Jones pairs. These provide a generalization and a new approach to the four-weight spin models of Bannai and Bannai. We show that each four-weight spin model determines a “dual” pair of association schemes. 1. Jones Pairs The space of k × k matrices acts on itself in three distinct ways: if C ∈ Mk(F), we can define endomorphisms XC ,… (More)