منابع مشابه
Curves That Must Be Retraced
We exhibit a polynomial time computable plane curve Γ that has finite length, does not intersect itself, and is smooth except at one endpoint, but has the following property. For every computable parametrization f of Γ and every positive integer n, there is some positive-length subcurve of Γ that f retraces at least n times. In contrast, every computable curve of finite length that does not int...
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S troke disparities are wide spread and pervasive throughout the world. In this review, we will examine the effect of socioeconomic status (SES), race, and ethnicity on stroke incidence and outcome. There are 2 main reasons that should compel us to fix the damage caused by stroke disparities. The first is based on the justice principle: no person or group should suffer more than others. Althoug...
متن کاملfee-for-service payment – an evil practice that must be stamped out?
co-opting physicians to regulate fee-for-service (ffs) payment is more feasible and simpler to administer than capitation, diagnosis-related groups (drgs) and pay-for-performance. the key lies in designing and revising the fee schedule, which not only defines and sets the fee for each item, but also the conditions of billing. adherence to these regulations must be strictly audited in order to c...
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Anew study by Khoury and colleagues 1 reports that 10% of a representative cohort of grade 9 students in Ontario had tried electronic cigarettes (e-cigarettes). This finding is likely an underestimate of rates across Canada: a 2013 study found substantial interprovincial variation in e-cigarette initiation among youth, with rates in Quebec double those in Ontario.2 Khoury and colleagues found t...
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ژورنال
عنوان ژورنال: Information and Computation
سال: 2011
ISSN: 0890-5401
DOI: 10.1016/j.ic.2011.01.004