Further improvement in the accuracy of any neutron lifetime experiment by means of ultracold neutrons (UCN) in material bottles is limited due to unavoidable systematic effects when the UCN are reflected from the walls. However, such effects can be excluded in principle if magnetic trapping of UCN is used. The storage of UCN in a small magnetic trap made of permanent magnets was demonstrated fo...

We study a problem of scheduling a maintenance activity on a single machine. Following several recent papers, the maintenance is assumed to be deteriorating, that is, delaying the maintenance increases the time required to perform it. The following objective functions are considered: makespan, flowtime, maximum lateness, total earliness, tardiness and due-date cost, and number of tardy jobs. We...

Multidisk vertical allocation (MDVA) problems intend to find an allocation of relations to disks such that the expected query cost is minimized. Recently, Chang [European Journal of Operational Research 143 (2002) 210] modified Rotem et al.’s [IEEE Transactions on Knowledge and Data Engineering 5 (1993) 882] method for solving an MDVA problem using a smaller number of binary variables. Chang’s ...

Correspondence to Jin-Soo Lee, M.D. Department of Internal Medicine, Inha University School of Medicine, 27 Inhang-ro, Jung-gu, Incheon 400-711, Korea Tel: +82-32-890-3616, Fax: +82-32-882-6578, E-mail: [email protected] Ji Hyeon Baek and Yu Bin Seo equally contributed to this work. Copyrightc 2014 The Korean Association of Internal Medicine This is an Open Access article distributed under the...

Although childhood T-cell acute lymphoblastic leukemia (T-ALL) is a high-risk disease the outcome can vary considerably. The varying outcomes suggest that unrecognized factors may contribute to disease progression. We report on a 2-year-old T-ALL patient presenting with a very short history of constipation and extreme hyperleukocytosis (WBC 882×10(9)/L). In her leukemic cells we detected the ve...

1. Lee, C.K.M., Chan, C.Y., Choy, K.L., and Ip, W.H., “Explore the feasibility of adopting crowdsourcing for innovative problem solving”, Industrial Management & Data Systems, Vol. 115, Iss. 5, pp.803-832 (2015). 2. Wu, C.H., Ho, G.T.S., Lam, C.H.Y., and Ip, W.H., “Franchising decision support system for formulating a center positioning strategy”, Industrial Management & Data Systems, Vol. 115,...

Review of the radiographs of 882 consecutive metal-to-polyethylene hip replacements after a mean follow-up of 6.8 years showed 72 cases (8%) of aseptic femoral loosening, all of which showed a lucent zone or black line between metal and cement. In 97% of the series this appeared within two years of the arthroplasty. Progress of loosening was unpredictable and only 24% had significant symptoms. ...

1. Arora R, Sanga L, Kumar M, Taneja M. Intralenticular foreign bodies: report of eight cases and review of management. Indian J Ophthalmol 2000;48:119-22. 2. Chang YS, Jeong YC, Ko BY. A case of an asymptomatic intralenticular foreign body. Korean J Ophthalmol 2008;22: 272-5. 3. Richards WW, Arrington JM. Asymptomatic intralenticular glass fragment. Am J Ophthalmol 1969;67:375-7. 4. Shiraishi ...

© Springer Science+Business Media New York 2015 S. Grossbard, The Marriage Motive: A Price Theory of Marriage, DOI 10.1007/978-1-4614-1623-4_2 This chapter and the following are adapted from “A Theory of Allocation of Time in Markets for Labor and Marriage,” Economic Journal, Vol. 94, pp. 863–882, December 1984. While writing it I benefited from helpful comments from Gary Becker, Jerry Green (f...