Background/aims: To assess reliability and validity of the QUOTE-cataract, a questionnaire that measures the quality of care from the perspective of cataract patients. Methods: The QUOTE-cataract was tested in a multicentre study among 540 cataract patients in three different hospitals. Reliability was represented by internal consistency (Cronbach’s α), and repeatability (intraclass correlation...

This paper introduces the online bundle purchasing problem (OBPP) as a new computational challenge induced by e-commerce technology. The task of the OBPP is to decide which of possibly many satisfactory combinations (bundles) of items should be purchased, from whom, and when, to maximize the buyer’s overall satisfaction. Satisfaction, formalized as multiattribute utility, includes attitudes tow...

Getting a precise and accurate understanding of the mechanism of quotation is broadly important to contemporary philosophy, impacting on numerous research areas, and it’s deeply important, being foundational to truth-theoretic semantics (Saka 1998, 1991). It is gratifying, therefore, to see an upsurge in quotation studies that includes at least nine doctoral dissertations in the past fifteen ye...

We study reflection in the Lambda Calculus from an axiomatic point of view. Specifically, we consider various properties that the quote p·q must satisfy as a function from Λ to Λ. The most important of these is the existence of a definable left inverse: a term E, called the evaluator for p·q, that satisfies EpMq = M for all M ∈ Λ. Usually the quote pMq encodes the syntax of a given term, and th...

We’re changing gears in this column. Our recent columns have used a distributed stock quoting example to focus on different concurrency models for developing multithreaded server applications. In this column, we’ll start looking at another aspect of distributed object computing systems: decoupling the relationship between “clients” and “servers.” Our examples to date have focused exclusively on...