78 research outputs found
On ‘becoming social’ : the importance of collaborative free play in childhood
There is increasing concern about declining mental health amongst children in the UK and the USA. Evolutionary and anthropological theorists have begun to build a theory linking this situation to decreasing opportunities to engage in free play. This paper will explore typical contexts for children in these nations, concluding that a range of recently emerging environments have decreased opportunities for collaborative peer free play and ‘discovery’ activities for the current generation. We will draw the theoretical analysis from a broad area of research encompassing psychology, anthropology, education, sociology, marketing, and philosophy to offer a new blend of practical and theoretical perspectives that may shed further light upon this topic
Surface-peaked medium effects in the interaction of nucleons with finite nuclei
We investigate the asymptotic separation of the optical model potential for
nucleon-nucleus scattering in momentum space, where the potential is split into
a medium-independent term and another depending exclusively on the gradient of
the density-dependent g matrix. This decomposition confines the medium
sensitivity of the nucleon-nucleus coupling to the surface of the nucleus. We
examine this feature in the context of proton-nucleus scattering at beam
energies between 30 and 100 MeV and find that the pn coupling accounts for most
of this sensitivity. Additionally, based on this general structure of the
optical potential we are able to treat both, the medium dependence of the
effective interaction and the full mixed density as described by
single-particle shell models. The calculated scattering observables agree
within 10% with those obtained by Arellano, Brieva and Love in their
momentum-space g-folding approach.Comment: 16 pages, 8 figures, submitted to PR
A rough set-based association rule approach implemented on exploring beverages product spectrum
[[abstract]]When items are classified according to whether they have more or less of a characteristic, the scale used is referred to as an ordinal scale. The main characteristic of the ordinal scale is that the categories have a logical or ordered relationship to each other. Thus, the ordinal scale data processing is very common in marketing, satisfaction and attitudinal research. This study proposes a new data mining method, using a rough set-based association rule, to analyze ordinal scale data, which has the ability to handle uncertainty in the data classification/sorting process. The induction of rough-set rules is presented as method of dealing with data uncertainty, while creating predictive if—then rules that generalize data values, for the beverage market in Taiwan. Empirical evaluation reveals that the proposed Rough Set Associational Rule (RSAR), combined with rough set theory, is superior to existing methods of data classification and can more effectively address the problems associated with ordinal scale data, for exploration of a beverage product spectrum.[[notice]]補正完畢[[incitationindex]]SCI[[booktype]]紙本[[booktype]]電子
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