We review some recent endeavors and add some new results to characterize and understand underlying mechanisms in Wikipedia (WP), the paradigmatic example of collaborative value production. We analyzed the statistics of editorial activity in different languages and observe typical circadian and weekly patterns, which enabled us to estimate the geographical origins of contributions to WPs in lang...

We show how some geometric elements of the path of a particle moving in a plane – the osculating circle and its radius of curvature – can be used to construct the parabolic trajectory of projectiles in motion under gravity.

The dissipative particle dynamic (DPD) method is applied to simulate the DNA separation process based on a mechanism developed earlier by other authors, who demonstrated a micro-device for separating DNAmolecules (>2kbp) through an entropic trapping mechanism. The DPD is used to model the process because it is intrinsic tomodeling hydrodynamic interactions, which is lacking in some earlier work...

The phenomenon of intrinsic vowel F0 (IF0), in which high vowels exhibit higher F0 than low vowels, has been widely attested in languages of the world. Most often, IF0 is regarded as an automatic, physiologically determined phenomenon, whereas others claim that IF0 is a controlled feature, introduced to enhance vowel contrasts. This paper presents new evidence on this issue by means of a cross-...

Kernel density estimation (KDE) is a popular nonparametric density estimation method. We (1) derive finite-sample high-probability density estimation bounds for multivariate KDE under mild density assumptions which hold uniformly in x ∈ R and bandwidth matrices. We apply these results to (2) mode, (3) density level set, and (4) class probability estimation and attain optimal rates up to logarit...

Advertising is the process of facilitating the industrial trade of a given products or services by attracting the customer to purchase it. The effect of advertisement can have an impact on adoption of particular product. It is important for the marketing industry to better understand the role of the unconscious and emotions in advertising communication and shopping behavior. Every advertisement...

The discussions from a patient-led session at a national home haemodialysis conference are described. A number of discussion themes are described, together with patients' views on technical and social aspects of home dialysis. Issues highlighted included the preparation for home systems and the role of intrinsic motivation to change regimens and practice. A number of conclusions are drawn from ...

In sensorimotor activities, learning requires efficient information processing, whether in car driving, sport activities or human-machine interactions. Several factors may affect the efficiency of such processing: they may be extrinsic (i.e., task-related) or intrinsic (i.e., subjects-related). The effects of these factors are intimately related to the structure of human information processing....