Reduction of artifacts associated with missing data in coherent diffractive imaging.

Coherent diffractive imaging experiments often collect incomplete datasets containing regions that lack any measurements. These regions can arise because of beamstops, gaps between detectors, or, in tomography experiments, a missing wedge of data due to a limited sample rotation range. We describe practical and effective approaches to mitigate reconstruction artifacts by bringing uniqueness back to the phase retrieval problem.

Influence of study characteristics on harm estimates from randomised controlled trials in patients with inflammatory arthritis receiving biological or synthetic antirheumatic drugs: a meta-epidemiological study.

Objective: To examine the association between study characteristics and the harms reported in randomised controlled trials (RCTs) on biological and targeted synthetic disease-modifying antirheumatic drugs (b/tsDMARDs) in patients with inflammatory arthritis (IA).

Methods: We searched MEDLINE for all Cochrane reviews and for systematic reviews published since April 2015. RCTs were eligible if they included patients with IA receiving b/tsDMARD, compared with any comparator arm.

The Associations between Father Involvement and Father-Daughter Relationship Quality on Girls' Experience of Social Bullying Victimization.

With much research into physical, cyber, and verbal bullying victimization, social bullying victimization is a type of victimization that can be hidden. Studies about Black father involvement have found involvement to be a buffer to adverse and risky behaviors of children, including different forms of victimization experienced by their daughters. This study examined one gap in the literature: the direct and potentially indirect associations between father involvement and father-child relationship quality on child reports of social bullying victimization among girls.

Complete alignment of a KB-mirror system guided by ptychography.

We demonstrate how the individual mirrors of a high-quality Kirkpatrick-Baez (KB) mirror system can be aligned to each other to create an optimally focused beam, through minimizing aberrations in the phase of the ptychographically reconstructed pupil function. Different sources of misalignment and the distinctive phase artifacts they create are presented via experimental results from the alignment of the KB mirrors at the NanoMAX diffraction endstation. The catalog of aberration artifacts can be used to easily identify which parameter requires further tuning in the alignment of any KB mirror system.