Halo orbits in cosmological disk galaxies : tracers of information history

We analyze the orbits of stars and dark matter particles in the halo of a disk galaxy formed in a cosmological hydrodynamical simulation. The halo is oblate within the inner ∼20 kpc and triaxial beyond this radius. About 43% of orbits are short axis tubes—the rest belong to orbit families that characterize triaxial potentials (boxes, long-axis tubes and chaotic orbits), but their shapes are close to axisymmetric. We find no evidence that the self-consistent distribution function of the nearly oblate inner halo is comprised primarily of axisymmetric short-axis tube orbits. Orbits of all families and both types of particles are highly eccentric, with mean eccentricity �0.6. We find that randomly selected samples of halo stars show no substructure in “integrals of motion” space. However, individual accretion events can clearly be identified in plots of metallicity versus formation time. Dynamically young tidal debris is found primarily on a single type of orbit. However, stars associated with older satellites become chaotically mixed during the formation process (possibly due to scattering by the central bulge and disk, and baryonic processes), and appear on all four types of orbits. We find that the tidal debris in cosmological hydrodynamical simulations experiences significantly more chaotic evolution than in collisionless simulations, making it much harder to identify individual progenitors using phase space coordinates alone. However, by combining information on stellar ages and chemical abundances with the orbital properties of halo stars in the underlying self-consistent potential, the identification of progenitors is likely to be possible

INFORMATION HISTORY - ANTE PORTAS

The paper is a list of passionate arguments for the `emancipation´ of the Information History, reviewing its pre-history, suggesting five basic research streams and surveying the latest literature

Fifty years of library and information history.

It has been fifty years since, in the spring of 1967, Library and Information History first appeared under the title of Library History. It was launched by the Library History Group of the then Library Association to replace a newsletter that had been distributed since 1963. Peter Hoare stated in the editorial of the first issue that the group hoped ‘to provide an appropriate medium for the publication and recording’ of recent research in the history of libraries and librarianship and that the journal hoped ‘to provide a focus for those working on or interested in the development of libraries and book-collecting, particularly in Britain but also abroad’. It is fair to say that in the fifty years which have followed, the journal has certainly lived up to those goals and ambitions. The vision which Peter Hoare and others had in 1967 has resulted in a journal which has published articles and reviews that have significantly contributed to the expansion of knowledge in many diverse aspects of cultural history

A mámoron és az igézeten túl : a listák világának sokszempontú információtörténeti beágyazásához - Beyond Vertigo: how to put the world of lists into information history narratives?

As an introduction to a special, thematic issue, the author reviews four possible analytic approach to information history centered view of lists. The microhistory explanation (1), a tipology-driven, time-sensitive contextualization (through melting the given type of list with similar ones, extending the scope to other information managing objects, actors and institutions of a given age (2), the macrohistory framing, when we try to insert the list into different sets of trendlines and trajectories (3), and a group of content-oriented, functional, structural points of views, reviving the epistemological nature of list-making, regarding to different societies, cultures and situations (4). After speculating on the validity and possible significance of a substantive and dedicated ‘science of lists’, the author summarizes the aspects, which can be devoted to specially information history-related dissections

Basketball 1946-47 Fort Hays Kansas State College

Fort Hays Kansas State College basketball program for the 1946-47 Fort Hays State Tigers season. Includes basketball schedule, squad information, history of coaches and the history of the basketball at Fort Hays State.https://scholars.fhsu.edu/athletic_programs/1173/thumbnail.jp

The Monty Hyams Archive: a new resource for the information history of the late 20th century

Purpose The purpose of this paper is to report a new resource for the study of the history of the development of information science and information services in the late twentieth century. The Monty Hyams archives include documents relating to the career of Montagu Hyams (1918-2013), the Founder of Derwent Publications, and an innovator in patents information, chemical and pharmaceutical information, and online information access. The Archive is housed in the Department of Library and Information Science at City, University of London. Design/methodology/approach The origins and development of the Monty Hyams Archive are described, and its value examined by an initial analysis of the light it sheds on the development of Derwent’s World Patents Index. Findings The newly established Hyams Archive allows analysis of previously private and unseen documents, which reveal the fascinating and complex personalities, issues and negotiations which led to the establishment of some of the most significant information sources and access methods of the pre-internet information environment. Originality/value The Monty Hyams Archive is a new and unique resource for the study of the development of the scientific information environment in the last decades of the twentieth century

Basketball 1948-49 Fort Hays Kansas State College

Fort Hays Kansas State College basketball program for the 1948-49 Fort Hays State Tigers season. Includes basketball schedule, squad information, history of coaches, squad sketches, athletic department staff and the history of the basketball at Fort Hays State.https://scholars.fhsu.edu/athletic_programs/1174/thumbnail.jp

Emerging Research Fields in Information History

After providing a fresh information history basics we roughly present three new, promising, deepening domains with growing importance, getting progressively into the center of intensified scholarly attention: History of Information Architecture, Complex History of Measurement and Information Archaeology

The Once and Future Book

Purpose: Reflection on the value of considering information history as a guide to the future Methodology: Reviews Ashgate's History of the Book in the West series Findings:'Information revolutions', such as printing and digital books, are often based on technologies and features already present. Value: Insights into the future of information and documentation may be gained from studying the historical development of our information environment