Tacitus, Germanicus and the Kings of Egypt (Tac. Ann. 2.59-61)

Accepted manuscrip

'When the culprits come to light ...': P.IFAO I 26, BGU III 731.ii, and P.Fay. 108

This paper suggests improved reconstructions for damaged passages in the request sections of three petitions: P. IFAO I 26; BGU III 731.ii; and P. Fay. 108. All three are best interpreted as relating to cases in which the petitioners did not know the identities or whereabouts of the wrongdoers, and therefore requested the registration of petitions so that their claims would be protected when the culprits came to light

Riot Control and Imperial Ideology in the Roman Empire

Ancient accounts of riots in the Roman Empire provide good evidence for elite attitudes to riot control, although not for the actual behaviour of the authorities in particular cases. They suggest that the authorities were generally expected to control all riots, whatever their causes. There was, however, deep ambivalence about the propriety of using military methods of control, and a belief that such methods could cause considerable bloodshed and damage to the urban fabric

Sunk cost accounting and entrapment in corporate acquisitions and financial markets : an experimental analysis

Sunk cost accounting refers to the empirical finding that individuals tend to let their decisions be influenced by costs made at an earlier time in such a way that they are more risk seeking than they would be had they not incurred these costs. Such behaviour violates the axioms of economic theory which states individuals should only consider incremental costs and benefits when executing investments. This dissertation is concerned whether the pervasive sunk cost phenomenon extends to corporate acquisitions and financial markets. 122 students from the University of St Andrews participated in three experiments exploring the use of sunk costs in interactive negotiation contexts and financial markets. Experiment I elucidates that subjects value the sunk cost issue higher than other issues in a multi-issue negotiation. Experiment II illustrates that bidders are influenced by the sunk costs of competing bidders in a first price, sealed-bid, common-value auction. In financial markets their exists an analogous concept to sunk cost accounting known as the disposition effect. This explains the tendency of investors to sell “winning” stocks and hold “losing” stocks. Experiment III demonstrates that trading strategies in an experimental equity market are influenced by a pre-trading brokerage cost. Not only are subjects influenced in the direction that reduces the disposition effect but also trading is diminished. Without the brokerage cost there was a significant disposition effect. JEL-Classifications C70, C90, D44, D80, D81, G1

Quantifying the Tibiofemoral Joint Space Using X-ray Tomosynthesis

Purpose: Digital x-ray tomosynthesis (DTS) has the potential to provide 3D information about the knee joint in a load-bearing posture, which may improve diagnosis and monitoring of knee osteoarthritis compared with projection radiography, the current standard of care. Manually quantifying and visualizing the joint space width (JSW) from 3D tomosynthesis datasets may be challenging. This work developed a semiautomated algorithm for quantifying the 3D tibiofemoral JSW from reconstructed DTS images. The algorithm was validated through anthropomorphic phantom experiments and applied to three clinical datasets. Methods: A user-selected volume of interest within the reconstructed DTS volume was enhanced with 1D multiscale gradient kernels. The edge-enhanced volumes were divided by polarity into tibial and femoral edge maps and combined across kernel scales. A 2D connected components algorithm was performed to determine candidate tibial and femoral edges. A 2D joint space width map (JSW) was constructed to represent the 3D tibiofemoral joint space. To quantify the algorithm accuracy, an adjustable knee phantom was constructed, and eleven posterior–anterior (PA) and lateral DTS scans were acquired with the medial minimum JSW of the phantom set to 0–5 mm in 0.5 mm increments (VolumeRadTM, GE Healthcare, Chalfont St. Giles, United Kingdom). The accuracy of the algorithm was quantified by comparing the minimum JSW in a region of interest in the medial compartment of the JSW map to the measured phantom setting for each trial. In addition, the algorithm was applied to DTS scans of a static knee phantom and the JSW map compared to values estimated from a manually segmented computed tomography (CT) dataset. The algorithm was also applied to three clinical DTS datasets of osteoarthritic patients. Results: The algorithm segmented the JSW and generated a JSW map for all phantom and clinical datasets. For the adjustable phantom, the estimated minimum JSW values were plotted against the measured values for all trials. A linear fit estimated a slope of 0.887 (R2¼0.962) and a mean error across all trials of 0.34 mm for the PA phantom data. The estimated minimum JSW values for the lateral adjustable phantom acquisitions were found to have low correlation to the measured values (R2¼0.377), with a mean error of 2.13 mm. The error in the lateral adjustable-phantom datasets appeared to be caused by artifacts due to unrealistic features in the phantom bones. JSW maps generated by DTS and CT varied by a mean of 0.6 mm and 0.8 mm across the knee joint, for PA and lateral scans. The tibial and femoral edges were successfully segmented and JSW maps determined for PA and lateral clinical DTS datasets. Conclusions: A semiautomated method is presented for quantifying the 3D joint space in a 2D JSW map using tomosynthesis images. The proposed algorithm quantified the JSW across the knee joint to sub-millimeter accuracy for PA tomosynthesis acquisitions. Overall, the results suggest that x-ray tomosynthesis may be beneficial for diagnosing and monitoring disease progression or treatment of osteoarthritis by providing quantitative images of JSW in the load-bearing knee

“I Got the Mics On, My People Speak”: On the Rise of Aboriginal Australian Hip Hop

In this paper, an Aboriginal rapper and settler-Australian Indigenous Studies lecturer collaborate to provide an overview of the Aboriginal Australian Hip Hop scene. We contextualize the development of Aboriginal Hip Hop as part of a long postcolonial tradition of Aboriginal engagement with Black transnationalism. By analysing rap lyrics, Hip Hop videos, and related commentary, we demonstrate the ways in which Aboriginal hip hoppers have adapted elements of Hip Hop culture to suit their own cultures, histories, and structural position as a colonized minority under the rule of a modern settler-colonial state. We conclude by considering Aboriginal engagement with Hip Hop culture as part of the ongoing development of Aboriginal cultures in an era of globalization