Description of the mechanics of creation of protons and neutrons in the 3-spaces model from the mutual capture within a very small volume of space of 2 electrons plus one positron, or alternately, of 2 positrons plus one electron, possessing insufficient energy to escape each other's mutual Coulombian interaction and the mechanics of the decay process involving the conversion of a neutron to a ...

In this paper we present a situated end user programming approach where user co-constructs, in an iterative process, a mutual cognitive environment with the system. We argue that co-construction of a mutual cognitive environment, between both the human and the system, is a key toward social human-computer interaction. Preliminary results are illustrated with a step by step case study: a user te...

Objects that float at the interface between a liquid and a gas interact because of interfacial deformation and the effect of gravity. We highlight the crucial role of buoyancy in this interaction, which, for small particles, prevails over the capillary suction that often is assumed to be the dominant effect. We emphasize this point using a simple classroom demonstration, and then derive the phy...

With the Internet changing from era Web1.0 of computers’ interaction to era Web2.0 of users’ interaction, the development of transactional community has become the key solution to combine economic value with social value in social commerce. Transactional community is different from traditional social community in its relationship establishment because of the unique motivations of their members....

the purpose of this study is to investigate the relationshipbetween the mutual funds flows and the return of stock index using 65mutual funds in the period of 2008 to 2011.in this study, the dailychanges of the total number of units of mutual funds and the changesof the total values of units of mutual funds were considered as acriteria for the net of mutual funds flows. the results of johansen ...