Christopher Ho

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Ad Hoc Networks are gaining popularity as a result of advances in smaller more versatile and powerful mobile computing devices The distinguishing feature of these networks is the universal mobility of all hosts This requires re engineering of basic network services including reliable multicast communication This paper considers the special case of highly(More)
BACKGROUND Vernier calipers have traditionally been used as the 'gold-standard' for tooth width measurements. New digital methods may prove to be as valid, reliable and reproducible as caliper measurements. AIMS To determine the validity, reliability and reproducibility of mesiodistal crown measurements made with calipers, using the DigiModel method and(More)
BACKGROUND The objective of this study is to provide a retrospective analysis using an NIS database to examine national trends in outcomes for CSM from 1993 to 2002. METHODS Data for CSM admissions (n = 138792) were extracted from the 1993 to 2002 NIS database to determine overall outcomes, as well as for those patients with CSM who underwent spinal(More)
OBJECTIVE To review predisposing factors contributing to dental caries in patients with cleft lip, cleft palate, or both (CL/P). DESIGN Patients with CL/P have a higher susceptibility to caries compared with the population group without clefts. A review of the literature was undertaken to determine factors that could account for the compromised oral(More)
INTRODUCTION The aim of this study was to compare the efficiency of self-ligating (SL) and conventionally ligated (CL) brackets during the first 20 weeks of extraction treatment. METHODS Study models of 50 consecutive patients who had premolar extractions in the maxillary and/or mandibular arch, 0.022 x 0.028-in slot brackets, and similar archwire(More)
BACKGROUND Patients with cleft lip and/or palate (CL&/P) experience a higher caries prevalence. This study aimed to determine if patients with CL&/P, undergoing and not undergoing orthodontic treatment, have a different salivary biochemical profile and different salivary levels of Mutans Streptococci (MS) and Lactobacilli (LB) compared to patients(More)
For any 1-1 measure preserving map T of a probability space, consider the [T, T−1] endomorphism and the corresponding decreasing sequence of σ-algebras. We demonstrate that if the decreasing sequence of σ-algebras generated by [T, T−1] and [S, S−1] are isomorphic, then T and S must have equal entropies. As a consequence, if the [T, T−1] endomorphism is(More)
INTRODUCTION Sorafenib is a multikinase inhibitor affecting pathways involved in tumor progression and angiogenesis. We conducted a phase II trial of sorafenib in platinum-treated patients with extensive stage small cell lung cancer to determine the tumor response rate, toxicity, and overall survival. METHODS Patients with histologically confirmed,(More)