We set up the electromagnetic system and its plane-wave solutions with the associated slowness and wave surfaces. We treat the Cauchy initial-value problem for the electric vector and make explicit the quantities necessary for numerical evaluation. We use the HerglotzPetrovskii representation as an integral around loops which, for each position and time form the intersection of a plane in the s...

Most of the serious handicaps of childhood present long before the age of 3 years. In the 3 to 5 year age group the commonest cause for concern is that the child is progessing more slowly than his peers, either in acquisition of language, motor coordination, or in all aspects of development. The purpose of this paper is firstly to review the concept of 'slowness', and then to discuss the paedia...

Understanding the guiding principles of sensory coding strategies is a main goal in computational neuroscience. Among others, the principles of predictive coding and slowness appear to capture aspects of sensory processing. Predictive coding postulates that sensory systems are adapted to the structure of their input signals such that information about future inputs is encoded. Slow feature anal...

[1] This paper uses sequential Bayesian techniques such as particle filters and smoothers to track in time both the non-volcanic tremor (NVT) source location on the plate interface and the angle of arrival via horizontal phase slowness. Sequential Bayesian techniques enable tracking of evolving geophysical parameters via sequential tremor observations. These techniques provide a formulation whe...

In an important paper Hinton and Nowlan demonstrate the Baldwin e ect in a simple Genetic Algorithm The ability of the phenotype to adapt coupled with the evolu tionary process allows behavioural goals to become over time genetically speci ed this seems Lamarckian but is not In that paper as a subsidiary point the slowness of xa tion of the last few goals is commented on and a later paper by Be...

Slow Technology is an opportunity to create reflective, mesmerizing and tangible experiences of temporality in relation to human perspectives and situated experiences. Hallnas and Redstrom [1] proposed the concepts of ‘reflective’ and ‘time’ technology as part of their design philosophy of slowness; this paper focuses on these concepts in reference to a specific time based artwork that explores...

OBJECTIVE Homozygous mutation in the ALS2 gene and the resulting loss of the guanine exchange factor activity of the ALS2 protein is causative for autosomal recessive early-onset motor neuron disease that is thought to predominantly affect upper motor neurons. The goal of this study was to elucidate how the motor system is affected by the deletion of ALS2. METHODS ALS2-deficient mice were gen...