during the human history, there was a great struggle against illness and pain, and physicians have always been vanguard in this fight, but some physicians, in addition to treating patients, have been doing their actual duty, namely the maintenance of human health. in the ancient medical history resources, issues of health protection have been shown to be one of the most significant subjects of ...

we consider the class of polynomial differential equation x&= , 2(,)(,)(,)nnmnmpxypxypxy++++2(,)(,)(,)nnmnmyqxyqxyqxy++&=++. for where and are homogeneous polynomials of degree i. inside this class of polynomial differential equation we consider a subclass of darboux integrable systems. moreover, under additional conditions we proved such darboux integrable systems can have at most 1 limit cycle.

This article identifies the impact of managed-care reforms on the utilization of medical services within the military health-services system. The data come from a recent demonstration project that substituted an HMO and PPO for traditional FFS arrangements. Results from a semiparametric model indicate that the generosity of benefits in the HMO increased demand for ambulatory services. Unlike...

Modern industry benefits from the automation capabilities and flexibility of robots. Consequently, performance depends on individual task, robot trajectory, while application periods several years lead to a significant impact use phase resource efficiency. In this work, simulation models predicting robot’s energy consumption are extended by an estimation reliability, enabling consideration main...

For leased equipment the lessor incurs penalty costs for failures occurring over the lease period and for not rectifying such failures within a specified time limit. Through preventive maintenance actions the penalty costs can be reduced but this is achieved at the expense of increased maintenance costs. The paper looks at a periodic preventive maintenance policy which achieves a tradeoff betwe...