BACKGROUND AND PURPOSE A clinically relevant number needed to harm for tissue plasminogen activator (tPA)-related symptomatic intracerebral hemorrhage (SICH) would greatly assist therapeutic decision-making. METHODS A 15-variable prognostic model was derived from a placebo group enrolled in National Institute of Neurological Disorders and Stroke tPA Trials 1 and 2 and used to predict final gl...

The ψ = ψ(3770) resonance is expected to be mainly cc̄(1D1), but tensor forces and coupling to charmed particle pairs can mix it with ψ(2S1) and other states. Implications of this mixing for decays of ψ to non-charmed final states are discussed. (i) The ratio Γ(ψ → γ + χc2)/Γ(ψ′′ → γ + χc0) is expected to be highly suppressed if ψ is a pure D-wave state, and is enchanced by mixing. (ii) The expe...

Un algoritmo genetico è un algoritmo euristico ispirato alla teoria darwinaiana dell’evoluzione ed ai concetti di selezione naturale ed evoluzione biologica. Gli algoritmi genetici permettono di valutare le soluzioni di partenza, ricombinarle ed, introducendo elementi di disordine, produrne di nuove convergendo, così, alla soluzione ottima. Nel corso degli ultimi decenni molti problemi concreti...

The experience of mixed emotions increases with age. Socioemotional selectivity theory suggests that mixed emotions are associated with shifting time horizons. Theoretically, perceived constraints on future time increase appreciation for life, which, in turn, elicits positive emotions such as happiness. Yet, the very same temporal constraints heighten awareness that these positive experiences c...