We address the task of repairing damaged infrastructures as a series of multidepot vehicle-routing problems with time windows in a time-rolling frame. The network size of the tackled problems changes from time to time, as new disaster nodes will be added to and serviced disaster nodes will be deleted from the current network. In addition, an inaccessible disaster node would become accessible wh...

We consider toughness conditions that guarantee the existence of a hamiltonian cycle in ktrees, a subclass of the class of chordal graphs. By a result of Chen et al. 18-tough chordal graphs are hamiltonian, and by a result of Bauer et al. there exist nontraceable chordal graphs with toughness arbitrarily close to 4 . It is believed that the best possible value of the toughness guaranteeing hami...

the aim of this paper is to show the importance of analytic hyperbolic geometry introduced in [9]. in [1], ungar and chen showed that the algebra of the group sl(2,c) naturally leads to the notion of gyrogroups and gyrovector spaces for dealing with the lorentz group and its underlying hyperbolic geometry. they defined the chen addition and then chen model of hyperbolic geometry. in this paper,...

Public Health Ontario, Toronto, ON; Dalla Lana School of Public Health, University of Toronto, Toronto, ON; Institute for Clinical Evaluative Sciences, Toronto, ON; Population Studies Division, Health Canada, Ottawa, ON; Dept of Family and Community Medicine, University of Toronto, Toronto, ON; Dept of Health Science, Carleton University, Ottawa, ON; Dept of Medicine, McGill University, Montrea...

Authors C. J. Chen, R. P. Kincaid, A. Martinez, and C. S. Sullivan would like to note the following. We have deemed some work from a previous lab member to be unreliable. Therefore, we have initiated a systematic review of all published work performed by this person. The sole contribution of this person to the present manuscript involves the microarray data presented in Fig. 4 and the associate...

SCN5A gene encoding the cardiac sodium channel. Genomics 1996;34:9– 16. 13. Makielski JC, Ye B, Valdivia CR, Pagel MD, Pu J, Tester DJ, et al. A ubiquitous splice variant and a common polymorphism affect heterologous expression of recombinant human SCN5A heart sodium channels. Circ Res 2003;93:821–8. 14. Hiraoka M. Inherited arrhythmic disorders in Japan. J Cardiovasc Electrophysiol 2003;14:431...

Studies have shown that cyclooxygenase (Cox) enzymes and E-cadherin have roles in ovarian cancer like many other cancers (Ali-Fehmi et al., 2005; Zahou et al., 2007). E-cadherin is expressed in epithelial cells and participates their differentiated functions and intercellular adhesion. Reduction or loss of E-cadherin expression represents transition from epithelial to mesothelial characteristic...

The presence of microcalcification clusters is a primary sign of breast cancer. It is difficult and time consuming for radiologists to diagnose microcalcifications. In this paper, we present a novel method for the classification of malignant and benign microcalcification clusters in mammograms. We analyse the topology of individual microcalcifications within a cluster using multiscale morpholog...