Research use of sensitive information – personally identifiable information (PII), protected health information (PHI), commercial or proprietary data, and the like – is increasing as researchers’ skill with “big data” matures. Duke University’s Protected Network is an environment with technical controls in place that provide research groups with essential pieces of security measures needed for ...

The Z speciication language can be used to capture liveness properties of state transition systems such as those used to specify communications protocols. The speciication of such systems involve temporal concepts such as \eventually" and \always". In this paper we extend standard Z to include the temporal logic operators so as to provide a powerful notation for discussing the liveness of state...

In this paper, I analyze the changes affecting modern economics textbooks such as Samuelson’s Economics, within the broader context of the American visual culture as inherited from the interwar period. The new tools and Medias depicting and disseminating social information to a mass audience were heavily used as means of education during wartime. When economic departments all over the US were c...

OBJECTIVES The purpose of this study was to test the hypothesis that the Duke treadmill score works less well for risk stratification in patients age 75 years or above. BACKGROUND Although the Duke treadmill score is generally effective for risk stratification, its prognostic value in the elderly may be limited because they have a higher prevalence of coronary artery disease (CAD), more severe ...

Esophageal squamous cell carcinoma (ESC) samples from patients residing in Uruguay and in Normandy, France, where alcoholic beverages and tobacco smoke are major risk factors, were analyzed for point mutations in the p53 tumor suppressor gene. Among 34 tumors (15 from Normandy and 19 from Uruguay) 15 point mutations in the p53 gene that result in amino acid substitutions or chain termination we...

OBJECTIVE In MS, Socio-Economic status (SES) may influence healthcare and access to disease-modifying treatments (DMTs). Optimising delays to switch patients to a second-line DMT may hamper disease progression most effectively and achieve long term disease control. The objective of this study is to identify the influence of SES on the delay between first and second line DMT in RRMS patients, in...

INTRODUCTION The term "predisposing heart condition" is used as an indication of antimicrobial prophylaxis to prevent infective endocarditis (IE) and as a criterion for diagnosing IE according to modified Duke criteria. The purpose of this survey was to elaborate clinician's knowledge and opinion on relevant heart conditions as a Duke minor criterion for the diagnosis of IE. METHODS A questio...