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Everyone who has seen the movie Wall Street wi~l have seen a commercial security policy in action. The recent work of Clark and Wilson and the WIPCIS initiative (the Workshop on Integrity Policy for Computer Information Systems) has drawn attention to the existence of a wide range of commercial security policies which are both significantly different from(More)
It has been demonstrated recently that beta-amyloid protein (beta AP), generally associated with the plaques of Alzheimer's disease, can also be found in the brains of survivors of head injury. In this study the distribution of the beta AP precursor protein (beta APP) was examined immunohistochemically to determine if it is colocalized with beta AP in such(More)
This paper examines some questions concerning commercial computer security integrity policies. We give an example of a dynamic separation of duty policy which cannot be implemented by TCSEC based mechanisms alone, yet occurs in the real commercial world, and can be implemented efficiently in practice. We examine and describe a commercial computer security(More)
There is no unifying hypothesis to account for the anatomical distribution of neuropathology, the involvement of beta-amyloid precursor protein (beta APP) and the role of increasing age in triggering the Alzheimer disease process. We report here that layer II pre-alpha neurones in transentorhinal and entorhinal cortex contain more beta APP immunoreactivity(More)
Essential thrombocythemia (ET) is heterogeneous with respect to natural history, X-chromosome inactivation patterns (XCIPs), and presence of the V617F mutation in Janus kinase 2 (JAK2). We studied 111 patients with ET; 39% were JAK2 mutant positive, and clone size (percentage mutant JAK2) was concordant with XCIP when constitutive T-cell patterns were taken(More)
There is an increasing awareness about the risks of arterial and venous thromboembolism (TE) in hospital patients and general public which has led to consideration of thrombosis prevention measures in earnest. Early recognition of the symptoms of TE disease has led to timely administration of antiplatelet and anticoagulant drugs, translating to better(More)
BACKGROUND Half of all lower limb deep vein thrombi (DVT) in symptomatic ambulatory patients are located in the distal (calf) veins. While proximal disease warrants therapeutic anticoagulation to reduce the associated risks, distal DVT often goes untreated. However, a proportion of untreated distal disease will undoubtedly propagate or embolize. Concern(More)
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