We consider a process Xt, which is observed on a finite time interval [0, T ], at discrete times 0, ∆n, 2∆n, · · · . This process is an Itô semimartingale with stochastic volatility σ t . Assuming that X has jumps on [0, T ], we derive tests to decide whether the volatility process has jumps occurring simultaneously with the jumps of Xt. There are two different families of tests, for the two po...

Toxoplasma gondii is a parasitic protozoan which is the cause of toxoplasmosis. Although human toxoplasmosis in healthy adults is usually asymptomatic, serious disease can occur in the case of congenital infections and immunocompromised individuals. Furthermore, despite the exact recognition of its etiology, it still presents a diagnostic problem. Diagnosis of toxoplasmosis is mainly based on t...

For a spatiotemporal process { X j ( s , t ) ∣ ∈ S T } = 1 … n where denotes the set of spatial locations and time domain, we consider problem testing for change in sequence mean functions μ . In contrast to most literature, are not interested arbitrarily small changes but only with norm exceeding given threshold. Asymptotically distribution free tests proposed, which do require estimation long...

Results: All measurements were pooled and submitted to statistical analysis. In order to verify the inter-examiner systematic error a paired t-test was performed. Dahlberg ’s formula was used to estimate the casual error. For comparison purposes between Before and After stages, a paired t-test was done. For the comparison between mini-implant and Nance button groups, a Student t-test was applie...