The Shapiro-Stiglitz Model with Non-constant Marginal Utility

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Randomised placebo-controlled study of the effect of fosinopril on left ventricular mass in untreated hypertensive patients: final results

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Sodium intake is a strong determinant of diastolic blood pressure in hypertensive patients in Hong Kong

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Prevalence of hypertension in close relatives of patients with essential hypertension

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Partial policy iteration for L1-robust Markov decision processes

Robust Markov decision processes (MDPs) compute reliable solutions for dynamic decision problems with partially-known transition probabilities. Unfortunately, accounting for uncertainty in the transition probabilities significantly increases the computational complexity of solving robust MDPs, which limits their scalability. This paper describes new, efficient algorithms for solving the common class of robust MDPs with s- and sa-rectangular ambiguity sets defined by weighted L1 norms. We propose partial policy iteration, a new, efficient, flexible, and general policy iteration scheme for robust MDPs. We also propose fast methods for computing the robust Bellman operator in quasi-linear time, nearly matching the ordinary Bellman operator's linear complexity. Our experimental results indicate that the proposed methods are many orders of magnitude faster than the state-of-the-art approach, which uses linear programming solvers combined with a robust value iteration

Continuous-Flow Depulping Machine for Treculia Africana

A continuous flow machine for the depulping of partially fermented fruit of Treculia Africana is presented. The machine is designed to improve upon an existing batch depulper, and consists of four main units, namely the hopper/depulping chamber, the connector-pipe, the separation chamber and power system. The machine operation involves the introduction of fermented breadfruit into the hopper from where it falls under gravity into the de-pulping chamber for further processing. The combination of crank and separation chamber is idealized as a six-member crank-rocker mechanism. Detailed kinematic and dynamic analysis of the idealized system is undertaken using an existing computer programme, SIXBAR. In this way, appropriate dimensions of each element are determined. A laboratory scale model of the machine is constructed and tested. Preliminary results indicate that 69–93% of the seeds could be effectively depulped. Further work is continuing to improve on the system performance and its acceptability by the stakeholders

Fungal infections in liver transplant recipients

Sixty-two adults who underwent orthotopic liver transplantations between February 1981 and June 1983 were followed for a mean of 170 days after the operation. Twenty-six patients developed 30 episodes of significant fungal infection. Candida species and Torulopsis glabrata were responsible for 22 episodes and Aspergillus species for 6. Most fungal infections occurred in the first month after transplantation. In the first 8 weeks after transplantation, death occurred in 69% (18/26) of patients with fungal infection but in only 8% (3/36) of patients without fungal infection (P<0.0005). The cause of death, however, was usually multifactorial, and not solely due to the fungal infection. Fungal infections were associated with the following clinical factors: administration of preoperative steroids (P<0.05) and antibiotics (P<0.05), longer transplant operative time (P<0.02), longer posttransplant operative time (P<0.01), duration of antibiotic use after transplant surgery (P<0.001), and the number of steroid boluses administered to control rejection in the first 2 posttransplant months (P<0.01). Patients with primary biliary cirrhosis had fewer fungal infections than patients with other underlying liver diseases (P<0.05). A total of 41% (9/22) of Candida infections resolved, but all Aspergillus infections ended in death. © 1985 by The Williams & Wilkins Co

Calcium channel blockers are overused and thiazides are underused in a hypertension outpatient clinic

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Trigeminal Neurosensory Deficit and Patient Reported Outcome Measures: The Effect on Life Satisfaction and Depression Symptoms

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