Missed detection probability is a critical metric for the integrity performance of receiver autonomous integrity monitoring (RAIM) in the presence of faults. The traditional missed detection probability evaluation method for RAIM is limited by impractical time consumption because of the absence of accurate searching interval for the magnitude of a worst-case fault. To address this issue, the searching interval for the magnitude of a worst-case fault is constructed by the combination of minimum detectable magnitude and minimum hazardous magnitude, and the searching interval adjustment is designed to avoid the absence of worst-case fault magnitude so that the maximum missed detection probability can be accurately evaluated. The simulation result indicates that the proposed method can achieve higher accuracy for the worst-case fault magnitude searching. Furthermore, the accuracy of worldwide evaluated missed detection rate can achieve an improvement of 57·66% at most by the proposed method for the different classical RAIM algorithms.

More than twenty-five years after the first signs of potential harm, the US remains locked in the grip of an opioid epidemic, with more Americans dying from overdoses than ever before.1 Diversion of prescription opioids plays an important role in opioid-related harms. Much of the scientific and public health focus on diversion has been on end-users, given how commonly non-medical prescription opioid use occurs, as well as the proportion of individuals who report that their source of non-medical opioids was friends or family. However, diversion of opioids, as well as their rampant oversupply, can be discerned higher up the supply chain, including among wholesalers, pharmacies and rogue prescribers whose behavior may trigger well-described “flags” warranting further evaluation and action.

Modern historians have repeatedly cast Sri Lanka’s historical female monarchs as ‘queens’, without critically reflecting on the conceptual limits and nuances of that term. Through a close examination of sources from the early second millennium, and their reception by scholars from the colonial period onwards, I demonstrate that Sri Lanka’s female monarchs—particularly Līlāvatī of Poḷonnaruva (r. 1197–1200, 1209, and 1210)—engaged in a more creative and subversive performance of gender than modern ‘queenship’ allows. In particular, I argue, a discourse of kingship’s inherent masculinity, advanced in literary and didactic texts written primarily by male monastics, was too-willingly accepted by colonial-period scholars. Closer attention to the material evidence of Līlāvatī’s reign, however, challenges this discourse and further suggests a politics of gender beyond the binary.

By simultaneously estimating satellite clock drifts (SCDs) as either constant parameters or piece-wise parameters, we present an improved integrated orbit determination and time synchronization approach for BDS-3 satellites with raw inter-satellite link (ISL) observations. Experiments with L-band data from seven monitoring stations in China and ISL data from eight satellites of the third-generation Beidou Navigation Satellite System (BDS-3) were carried out and the two SCD estimation strategies are validated. It is demonstrated that, with SCDs estimated, the quality of orbits and clock offsets is comparable to those with SCDs corrected using predicted values. The accuracy of the estimated orbits and clocks are up to 0.019 m (radial) and 0.095 ns, respectively, with improvements of 95% and 90%, when compared with the results using the L-band data alone. It is also demonstrated that estimating SCDs time slice by time slice is slightly worse in accuracy but superior in coping with possible frequency jump of satellite clocks.

The tendency to reduce the movements of performers in media art to data results in a flattening of identities and makes the performers’ essence seemingly insignificant. Two case studies showcase what might be lost through datafication, even as they resist it: Lucinda Childs “walking” in Bach 6 Solo by Robert Wilson, and Michael Jackson standing still at the start of his 1993 Super Bowl Halftime show. The desire to detach the body from aesthetic significance can be traced back to America’s historical racism.