The demand for crop genetic resources: international use of the U.S. National Plant Germplasm System

In contrast to a perception that ex situ collections of germplasm are rarely used, this empirical case study reveals large quantities of germplasm samples distributed by the U.S. National Germplasm System to many types of scientific institutions located in numerous countries around the world. Distributions favor developing countries in several ways including the numbers of samples shipped, utilization rates in crop breeding programs, and the secondary benefits brought about through sharing this germplasm with other scientists. Expected future demand is also greater among scientists in developing countries. These findings underscore the importance to global science and technology of retaining such resources in the public domain.Germplasm resources, Plant Research., Germplasm conservation., Germplasm resources, Plant International cooperation. ,

Autobiographical Writings

Emerging out of the traditions of exemplary lives and self-analysis at the beginning of the seventeenth century, the genre of spiritual autobiography writing is fluid and unstable both textually and generically. The individualism that has often been taken to define the autobiographical project is problematized in these accounts, which tend to foreground self-transcendence over self-assertion, collective over individual identities, and exemplarity over uniqueness. The spiritual framework provides a language of self-narrative and self-analysis, structured around affliction and redemption, and privileging inward over outward experiences. As a mode which insists on the truth of experience, it allows marginal selves (including women and lower-class men) a public voice, above all in the gathered churches of the revolutionary decades and after, while also containing those voices within tight conventions. The simultaneous restrictions and liberations of these various frames offer important perspectives on debates about the early modern self

Childhood and Loss in Early Modern Life Writing

Memories of childhood seldom appear in early modern life writing, and nostalgia is not a primary mode of recollection. Where childhood does figure, it is often troubled: difficult memories, of loss, death, and displacement, make themselves insistently felt. However, nostalgia registers not only idealisation, but also a sense of connection to a continuingly resonant past. This article considers the representation of childhood memory in six seventeenth-century narratives, examining how these texts negotiate a relation to the past, and tracing elements of the emotional structures of nostalgia in early modern subjects

Dynamic range of hypercubic stochastic excitable media

We study the response properties of d-dimensional hypercubic excitable networks to a stochastic stimulus. Each site, modelled either by a three-state stochastic susceptible-infected-recovered-susceptible system or by the probabilistic Greenberg-Hastings cellular automaton, is continuously and independently stimulated by an external Poisson rate h. The response function (mean density of active sites rho versus h) is obtained via simulations (for d=1, 2, 3, 4) and mean field approximations at the single-site and pair levels (for all d). In any dimension, the dynamic range of the response function is maximized precisely at the nonequilibrium phase transition to self-sustained activity, in agreement with a reasoning recently proposed. Moreover, the maximum dynamic range attained at a given dimension d is a decreasing function of d.Comment: 7 pages, 4 figure