Family secrets

Keeping Secrets within a Family: Rediscovering Parnas

David Parnas wrote several papers in the 1970’s and 1980’s that are now considered classics. The concepts he advocated such as information hiding and use of abstract interfaces are generally accepted as the appropriate way to design nontrivial software systems. However, not all of what he proposed has been fully appreciated and assimilated into our practices. Many of his simple, elegant ideas h...

Unlocking Family Secrets K+ Channel Transmembrane Domains

a cloud of cations, effectively concentrating them above the level of surrounding anions. When the channel opens, hydrated cations rapidly accelerate by electrodif-and Children's Hospital fusion into an 18 A ˚ –long hydrophobic canal that leads into a wider, 10 A ˚ –long cavity. In this cavity, dozens of Boston, Massachusetts 02115 H 2 O molecules are attracted to the K ϩ ion to help shield its...

Family secrets and family functioning: the case of donor assistance.

The purpose of this study was to examine the relationship between adult offspring's perception of family functioning and of parental use of topic avoidance to maintain secrecy regarding the use of donor assistance to conceive. A cross-sectional design was used to study a convenience sample of 69 young adult donor offspring who completed a demographic questionnaire, a topic avoidance scale relat...

Family violence. Part II. Hidden secrets: child abuse.

Deep secrets

be hypothesised that adaptation to pollinators has been a driving force behind the diversification of some of the major elements of the southern African flora, " Johnson writes. Southern African flowers are known to be attractive to a range of species from long-probscid flies, oil-bees, hawkmoths, butterflies, birds and rodents. Many of these pollination interactions have been characterised in ...