Can Tests for Jumps be Viewed as Tests for Clusters?

Averaging tests for jumps

We propose a new procedure to detect jumps in prices in the presence of microstructure noise. The procedure averages the results from existing tests across sampling frequencies. This approach overcomes the sub-sampling and low-power problems that plague existing tests for jumps. We use a modified version of Fisher’s method to combine p-values for the Barndorff-Nielsen and Shephard (2006) test a...

Tests for non-randomness in quantum jumps

In a fundamental test of quantum mechanics, we have observed 228 000 quantum jumps of a single trapped and laser cooled Sr ion. This represents a statistical increase of two orders of magnitude over previous similar analyses of quantum jumps. Compared to other searches for nonrandomness in quantum mechanical processes, using quantum jumps simplifies the interpretation of data by eliminated mult...

routine screening for cytomegalovirus infection in immunosuppressed patients: can the diagnostic tests alone be reliable?

Assessment of Immunology Tests for Pregnancy Diagnosis

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Can Prostate Specific Antigen Be Used as New Biomarker for Early Diagnosis of Breast Cancer?

Introduction: As a glycoprotein, Plasma Prostate-Specific Antigen (PSA) is mainly produced by prostate epithelial cells and is used as a major diagnostic tool for prostate cancer. A group of researchers relate the elevated number of estrogen receptors in breast cancer samples to the over-production of PSA in this type of cancer. Therefore, the present study aimed to determine the participants' ...