Psychostimulant Use and Fatal Stroke in Young Adults

Psychostimulant use is associated with increased stroke risk. To determine the proportion of psychostimulant users among fatal strokes in young adults (15–44 years), all cases were retrieved from the National Coronial Information System (1/1/2009–31/12/2016). A total of 279 cases were identified: hemorrhagic (259), ischemic (8), thrombotic (8), and mycotic (4). Fifty (17.9%) were identified as psychostimulant users. Psychostimulants in blood were detected in 37/45 where toxicology was available, predominantly methamphetamine (32/45). Hemorrhagic strokes in the psychostimulant group were more likely to be intraparenchymal (OR 2.33). Psychostimulant users were less likely to be obese (OR 0.31), but more likely to have a history of tobacco use (OR 2.64). No psychostimulant user had a previous stroke history, was gravid/postpartum, or diagnosed with cerebral vasculitis or endocarditis. The work illustrates the substantial role of psychostimulant use in fatal strokes among young adults. In cases of hemorrhagic stroke among young adults, psychostimulant use should be considered.     

Ventilatory and metabolic demands during aggressive physical restraint in healthy adults

We investigated ventilatory and metabolic demands in healthy adults when placed in the prone maximal restraint position (PMRP), i.e., hogtie restraint. Maximal voluntary ventilation (MVV) was measured in seated subjects (n=30), in the PMRP, and when prone with up to 90.1 or 102.3 kg of weight on the back. MVV with the heaviest weight was 70% of the seated MVV (122+/-28 and 156+/-38 L/min, respectively; p<0.001). Also, subjects (n=27) were placed in the PMRP and struggled vigorously for 60 sec. During the restrained struggle, ventilatory function (V(E)/ MVV) was 44% of MVV in the resting PMRP. While prone with up to 90.1 or 102.3 kg on the back, the decrease in MVV was of no clinical importance in these subjects. Also, while maximally struggling in the PMRP, V(E) was still adequate to supply the ventilatory needs.     

Pilot Study of Automated Bullet Signature Identification Based on Topography Measurements and Correlations*†

Abstract: A procedure for automated bullet signature identification is described based on topography measurements using confocal microscopy and correlation calculation. Automated search and retrieval systems are widely used for comparison of firearms evidence. In this study, 48 bullets fired from six different barrel manufacturers are classified into different groups based on the width class characteristic for each land engraved area of the bullets. Then the cross‐correlation function is applied both for automatic selection of the effective correlation area, and for the extraction of a 2D bullet profile signature. Based on the cross‐correlation maximum values, a list of top ranking candidates against a ballistics signature database of bullets fired from the same model firearm is developed. The correlation results show a 9.3% higher accuracy rate compared with a currently used commercial system based on optical reflection. This suggests that correlation results can be improved using the sequence of methods described here.     

Clinical Characteristics of Fatal Methamphetamine‐related Stroke: A National Study

The study aimed to determine the clinical characteristics of fatal methamphetamine‐related stroke in Australia, 2009–2015. There were 38 cases, 60.5% male, with a mean age of 40.3 years. In no case was there evidence that this was the first time methamphetamine had been used by the decedent, and 52.6% had known histories of injecting drug use. The stroke was hemorrhagic in 37 of 38 cases. In 21.1% of cases, the stroke was purely parenchymal and, in 18.4%, involved purely the subarachnoid space. A ruptured berry aneurysm was present in 31.6% and in 68.8% of initial subarachnoid hemorrhages. There was evidence of systemic hypertension in 8 of 25 cases in which full autopsy findings were available. With increased use of methamphetamine, there is a high probability of increased hemorrhagic stroke incidence among young people. In cases of fatal hemorrhagic stroke among young cases presenting to autopsy, the possibility of methamphetamine use should be borne in mind.     

Are ‘pseudonymised’ data always personal data? Implications of the GDPR for administrative data research in the UK

There has naturally been a good deal of discussion of the forthcoming General Data Protection Regulation. One issue of interest to all data controllers, and of particular concern for researchers, is whether the GDPR expands the scope of personal data through the introduction of the term ‘pseudonymisation’ in Article 4(5). If all data which have been ‘pseudonymised’ in the conventional sense of the word (e.g. key-coded) are to be treated as personal data, this would have serious implications for research. Administrative data research, which is carried out on data routinely collected and held by public authorities, would be particularly affected as the sharing of de-identified data could constitute the unconsented disclosure of identifiable information.Instead, however, we argue that the definition of pseudonymisation in Article 4(5) GDPR will not expand the category of personal data, and that there is no intention that it should do so. The definition of pseudonymisation under the GDPR is not intended to determine whether data are personal data; indeed it is clear that all data falling within this definition are personal data. Rather, it is Recital 26 and its requirement of a ‘means reasonably likely to be used’ which remains the relevant test as to whether data are personal. This leaves open the possibility that data which have been ‘pseudonymised’ in the conventional sense of key-coding can still be rendered anonymous. There may also be circumstances in which data which have undergone pseudonymisation within one organisation could be anonymous for a third party. We explain how, with reference to the data environment factors as set out in the UK Anonymisation Network's Anonymisation Decision-Making Framework.     

Selected Recent Books on Soviet Energy

This compilation comprises a special bibliography of recent books on Soviet energy prepared and annotated by the editor of Soviet Geography. An initial section contains five books with sections on nuclear power of particular interest in connection with the Chernobyl' accident. A second section of four entries is devoted to general issues of energy policy, consumption and demand, conservation, and impacts of energy development on Soviet foreign policy and world markets. The final section includes ten books addressing problems of fossil fuel development in the USSR, and efforts to overcome organizational and logistical obstacles to West Siberian oil and gas development in particular. Journal of Economic Literature, Classification Numbers: 027, 124, 723.     

Comment on James H. Carr and Michelle Mulcahy's “Twenty years of housing policy: what's new,what's changed,what's ahead?”

Housing policy in the post Great Recession (GR) era faces tremendous uncertainties, but clearly there will be more sensitivity around risk, quality, and transparency in capital markets. The post-GR domestic policy environment and economy are likely to impose several overarching constraints, including less access to world capital markets for financing housing, more restrictive assessments of risk, and increasing restraints on federal domestic spending particularly for non-entitlement programs. Carr and Mulcahy provide a substantial agenda of liberal-progressive policies that focus on the predatory and risky practices of loan originators and promote expansion of home ownership for low-income households. If we are indeed on the brink of an era of austerity, the housing policy debate will need to focus on priorities for contraction rather than expansion in housing programs, and on tenure-neutral policies rather than promoting home ownership.     

Does Performance Management Lead to Better Outcomes? Evidence from the U.S. Public Transit Industry

Although performance management processes are widely assumed to be beneficial in improving organizational performance in the public sector, there is insufficient empirical evidence to back this claim. In this article, the authors examine the impact of performance management practices on organizational effectiveness in a particular segment of the public transit industry in the United States. The analysis utilizes original survey data on performance management practices comprising both strategy formulation and performance measurement in 88 small and medium‐sized local transit agencies in conjunction with comparative outcome data drawn from the National Transit Database maintained by the Federal Transit Administration. The results provide evidence that more extensive use of performance management practices does in fact contribute to increased effectiveness in this segment of the transit industry.     

Romanian views on Bessarabia and Bukovina: A Ukrainian perspective

Nicholas Dima, Bessarabia and Bukovina: The Soviet‐Romanian Territorial Dispute. Boulder, CO: East European Monographs, 1982. v, 173 pp. Distributed by Columbia University Press. Maria Manoliu‐Manea, ed., The Tragic Plight of a Border Area: Bessarabia and Bucovina. American Romanian Academy of Arts and Sciences. Hum‐boldt State University Press, 1983. xii, 280 pp.