e-cities is a concept for a system that would bring research knowledge of the cultural heritage, in particular the history of cities, into popular use. The idea was developed as a model of multi-lingual cultural content management and dissemination. The system could be implemented as a fully functional and reproducible system applicable to any city, anywhere. Much of the technology is being or ...

This article provides evidence about the quality of retrospective childhood health histories given to respondents in the Health and Retirement Survey (HRS) and the Panel Study of Income Dynamics (PSID). Even though information on early life health events is critical, there is legitimate skepticism about the ability of older respondents to remember specific health problems that they had during c...

Parasites and parasitism is common. Worm macroparasites have evolved life-history traits that allow them to successfully transmit between spatially and temporally separated patches of host resource and to survive within these environments. Macroparasites have common life-history strategies to achieve this, but these general themes are modified in a myriad of ways related to the specific biology...

Constraint Handling Rules (CHR) is an elegant, high-level programming language based on multi-headed, forward chaining rules. A distinguishing feature of CHR are propagation rules. To avoid trivial non-termination, CHR implementations ensure a CHR rule is applied at most once with the same combination of constraints by maintaining a so-called propagation history. The performance impact of this ...

Like would-be claimants arguing over a family inheritance, different disciplines have created different genealogies of medical geography, even as they share an interest in capturing its riches. Over the course of the twentieth century, historians of medicine and geographers have each created their own histories of the relations between health and environment.' Yet for both historians and geogra...

Isham’s topos-theoretic perspective on the logic of the consistent-histories theory [34] is extended in two ways. First, the presheaves of consistent sets of history propositions in their corresponding topos originally proposed in [34] are endowed with a Vietoristype of topology and subsequently they are sheafified with respect to it. The category resulting from this sheafification procedure is...