The disappearance of the e antigen and the appearance of anti-e antigen antibodies are two biomarkers that indicate favorable prognosis in Hepatitis B. In this study the Advanced Quality immunochromatographic test for detecting those biomarkers was compared to the Vidas semi-quantitative ELISA test. Our hypothesis was that it is possible to use these biomarkers measured in a rapid and simple Ad...

Online evaluation methods, such as A/B and interleaving experiments, are widely used for search engine evaluation. Since they rely on noisy implicit user feedback, running each experiment takes a considerable time. Recently, the problem of reducing the duration of online experiments has received substantial attention from the research community. However, the possibility of using sequential stat...

The Child Feeding Questionnaire (CFQ) assesses parental feeding attitudes, beliefs and practices concerned with child feeding and obesity proneness. The questionnaire has been developed in the U.S., and validation studies in other countries are limited. The aim of this study was to examine the psychometric properties of the CFQ in Sweden and the associations between parenting practices and chil...

Regression testing is one of the most critical activities of software development and maintenance. Whenever software is modified, a set of test cases are run and the comparison of new outputs is done with the older one to avoid unwanted changes. If the new output and old output match it implies that the modifications made in one part of the software don’t affect the remaining software. It is im...

Problems of detecting two (or one of two) irregular coins x and y among a set of n coins are considered. The testing device is such that it returns feedback 1 if x belongs to the test set and y does not, while it returns feedback 0 otherwise. We present a lower bound on the worst-case number of tests necessary to nd one of the two irregular coins as well as on the worst-case number of tests to ...

We study the problem of finding a point in the relative interior of the optimal face of a linear program. We prove that in the worst case such a point can be obtained in O(n3L) arithmetic operations. This complexity is the same as the complexity for solving a linear program. We also show how to find such a point in practice. We report and discuss computational results obtained for the linear pr...

OBJECTIVE To validate the Portuguese version of the Children's Sleep Habits Questionnaire (CSHQ-PT) and compare it to the versions from other countries. METHODS The questionnaire was previously adapted to the Portuguese language according to international guidelines. 500 questionnaires were delivered to the parents of a Portuguese community sample of children aged 2 to 10 years old. 370 (74%)...

This paper addresses the problem of reducing the size of test sets for regression testing and test output inspection Since regression testing requires the execution of some and in the worst case all test cases reducing the number of tests can have a large bene t Additionally testers generally have to examine the output of each test case both during initial and regression testing Since this is d...

We present a unconditional deterministic primality proving algorithm for Cullen numbers. The expected running time and the worst case running time of the algorithm are Õ(logN) bit operations and Õ(logN) bit operations, respectively.