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http://hdl.handle.net/10453/147
2014-07-29T15:36:24ZAnalysis of dichotomous outcome data for community intervention studies
http://hdl.handle.net/10453/28127
Analysis of dichotomous outcome data for community intervention studies
Bellamy, Scarlett; Gibberd, Robert; Hancock, Lynne; Howley, Peter; Kennedy, Bruce; Klar, Neil; Lipsitz, Stuart; Ryan, Louise
Community intervention trials are becoming increasingly popular as a tool for evaluating the effectiveness of health education and intervention strategies. Typically, units such as households, schools, towns, counties, are randomized to receive either intervention or control, then outcomes are measured on individuals within each of the units of randomization. It is well recognized that the design and analysis of such studies must account for the clustering of subjects within the units of randomization. Furthermore, there are usually both subject level and cluster level covariates that must be considered in the modelling process. While suitable methods are available for continuous outcomes, data analysis is more complicated when dichotomous outcomes are measured on each subject. This paper will compare and contrast several of the available methods that can be applied in such settings, including random effects models, generalized estimating equations and methods based on the calculation of `design effects', as implemented in the computer package SUDAAN. For completeness, the paper will also compare these methods of analysis with more simplistic approaches based on the summary statistics. All the methods will be applied to a case study based on an adolescent anti-smoking intervention in Australia. The paper concludes with some general discussion and recommendations for routine design and analysis.
2000-01-01T00:00:00ZUniversal coding for transmission of private information
http://hdl.handle.net/10453/28128
Universal coding for transmission of private information
Datta, Nilanjana; Hsieh, Min-Hsiu
We consider the scenario in which Alice transmits private classical messages to Bob via a classical-quantum channel, part of whose output is intercepted by an eavesdropper Eve. We prove the existence of a universal coding scheme under which Alice's messages can be inferred correctly by Bob, and yet Eve learns nothing about them. The code is universal in the sense that it does not depend on specific knowledge of the channel. Prior knowledge of the probability distribution on the input alphabet of the channel, and bounds on the corresponding Holevo quantities of the output ensembles at Bob's and Eve's end suffice
2010-01-01T00:00:00ZNumerical Design Methods Of Nanostructure Array For Nanobiosensing
http://hdl.handle.net/10453/28122
Numerical Design Methods Of Nanostructure Array For Nanobiosensing
Zhu, Shaoli; Zhou, W; Park, Gh; Li, Ep
2010-01-01T00:00:00ZScheduling for fabrication and assembly in a two-machine flowshop with a fixed job sequence
http://hdl.handle.net/10453/28121
Scheduling for fabrication and assembly in a two-machine flowshop with a fixed job sequence
Hwang, Feng-Jang; Kovalyov, Mikhail; Lin, Bertrand
This paper studies a problem of scheduling fabrication and assembly operations in a two-machine flowshop, subject to the same predetermined job sequence on each machine. In the manufacturing setting, there are n products, each of which consists of two components: a common component and a unique component which are fabricated on machine 1 and then assembled on machine 2. Common components of all products are processed in batches preceded by a constant setup time. The manufacturing process related to each single product is called a job. We address four regular performance measures: the total job completion time, the maximum job lateness, the total job tardiness, and the number of tardy jobs. Several optimality properties are presented. Based upon the concept of critical path and block schedule, a generic dynamic programming algorithm is developed to find an optimal schedule in O(n7) time.
2014-01-01T00:00:00Z