Alan E. Lindsay

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A computerized medical decision-making system was used to monitor signs and predisposing factors of digoxin intoxication in patients receiving digoxin. This process automatically reviewed the patient's data base nightly for drug interactions, laboratory data and electrocardiographic findings with known association with digoxin intoxication. These decisions(More)
OBJECTIVE --To evaluate the association between diabetes and human immunodeficiency virus (HIV) seroprevalence in a population of intravenous (IV) drug users. DESIGN --Cross-sectional survey in a cohort of IV drug users. SETTING --Community-based study clinic. SUBJECTS --The study included 2921 individuals with a history of IV drug use in the past 10(More)
The association between human immunodeficiency virus (HIV) seropositivity and a history of sexually transmitted diseases (STDs), evidence of STDs on physical examination, and sexual and drug use practices was studied in a population of 2921 intravenous drug users (IVDUs) in Baltimore during 1988 and 1989. Overall, 24.1% were HIV-seropositive at baseline,(More)
Several nonlinear eigenvalue problems modeling the steady-state deflection of an elastic membrane associated with a MEMS capacitor under a constant applied voltage are analyzed using formal asymptotic methods. The nonlinear eigenvalue problems under consideration represent various regular and singular perturbations of the basic membrane nonlinear eigenvalue(More)
Finite time singularity formation in a fourth order nonlinear parabolic partial differential equation (PDE) is analyzed. The PDE is a variant of a ubiquitous model found in the field of microelectromechanical systems (MEMS) and is studied on a one-dimensional (1D) strip and the unit disc. The solution itself remains continuous at the point of singularity(More)
In many pattern forming systems, narrow two-dimensional domains can arise whose cross sections are roughly one-dimensional localized solutions. This paper investigates this phenomenon in the variational Swift–Hohenberg equation. Stability of straight line solutions is analyzed, leading to criteria for either curve buckling or curve disintegration. Matched(More)
We consider the Constant Elasticity of Variance (CEV) process, reviewing the relationships between its transition density and that of the non-central chi-squared distribution. When the CEV parameter exceeds one, the forward price process is a strictly local martingale, and the price of a plain vanilla European call option reflects this fact. We develop(More)
OBJECTIVE To compare occurrence of clinical symptoms, physical examination findings and hematologic variables in male and female HIV-seropositive injecting drug users (IDU) with similar CD4+ lymphocyte counts. METHOD We interviewed and examined 118 female and 444 male AIDS-free HIV-seropositive IDU for clinical signs and symptoms. HIV serology and(More)