in this paper we obtain lower and upper estimates for the essential norms of generalized composition operators from weighted dirichlet spaces or bloch type spaces to $q_k$ type spaces.

2. A SMIDGEON ABOUT PROBABILITY AND EVENTS Wisdom ofttimes consists of knowing what to do next. – Herbert Hoover DEFINITIONS Experiment – any action or process that generates observations (e.g. flipping a coin) Trial – a single instance of an experiment (one flip of the coin) Outcome – the observation resulting from a trial (“heads”) Sample Space – the set of all possible outcomes of an experim...

Trial-and-error learning strategies play a central role in sensorimotor development during early infancy. However, learning to reach by trial-and-error normally requires a slow and laborious search through the space of possible movements. We propose a computational model of reaching based on the notion that early sensorimotor control is driven by the generation of exploratory movements, followe...

In the present study, we show that energetic costs of planned hand movements affect the perception of distances in reaching space. In three experiments, participants prepared hand movements that varied regarding movement amplitude or necessary movement force in either a blockwise or trial-by-trial manner. Before actual execution of the action, a visually presented distance had to be estimated. ...

Two space-time variational formulations of linear parabolic evolution equations are considered, one is symmetric and elliptic on the trial space while the other is not. In each case, a space-time Petrov–Galerkin discretization using suitable tensor product trial and test functions leads to a large linear system of equations. The well-posedness of this system with respect to parabolic norms indu...

OBJECTIVE To develop a minimally invasive surgical technique for the treatment of parapharyngeal space and infratemporal fossa skull base neoplasms using the technical and optical advantages of robotic surgical instrumentation. DESIGN A robotics skull base surgery program at the University of Pennsylvania, Philadelphia, was initiated in the fall of 2005. Six experimental procedures focusing o...

It is a great challenge to trapping novel Bi2WO6/MIL-53(Al) (BWO/MIL) nanocomposites with excellence catalytic activity by the trial-and-error method in vast untapped synthetic space. The degradation rate of dyes Rhodamine...

in this paper, we introduce a method by which we can find a close connection between the set of prime $z$-ideals of $c(x)$ and the same of $c(y)$, for some special subset $y$ of $x$. for instance, if $y=coz(f)$ for some $fin c(x)$, then there exists a one-to-one correspondence between the set of prime $z$-ideals of $c(y)$ and the set of prime $z$-ideals of $c(x)$ not containing $f$. moreover, c...