WorldWideScience

Sample records for expanding digital universe

  1. Astronomy in the Digital Universe

    Science.gov (United States)

    Haisch, Bernard M.; Lindblom, J.; Terzian, Y.

    2006-12-01

    The Digital Universe is an Internet project whose mission is to provide free, accurate, unbiased information covering all aspects of human knowledge, and to inspire humans to learn, make use of, and expand this knowledge. It is planned to be a decades long effort, inspired by the Encyclopedia Galactica concept popularized by Carl Sagan, and is being developed by the non-profit Digital Universe Foundation. A worldwide network of experts is responsible for selecting content featured within the Digital Universe. The first publicly available content is the Encyclopedia of Earth, a Boston University project headed by Prof. Cutler Cleveland, which will be part of the Earth Portal. The second major content area will be an analogous Encyclopedia of the Cosmos to be part of the Cosmos Portal. It is anticipated that this will evolve into a major resource for astronomy education. Authors and topic editors are now being recruited for the Encyclopedia of the Cosmos.

  2. What Expands in an Expanding Universe?

    Science.gov (United States)

    Pacheco, José A De Freitas

    2015-01-01

    In the present investigation, the possible effects of the expansion of the Universe on systems bonded either by gravitational or electromagnetic forces, are reconsidered. It will be shown that the acceleration (positive or negative) of the expanding background, is the determinant factor affecting planetary orbits and atomic sizes. In the presently accepted cosmology (ΛCDM) all bonded systems are expanding at a decreasing rate that tends to be zero as the universe enters in a de Sitter phase. It is worth mentioning that the estimated expansion rates are rather small and they can be neglected for all practical purposes.

  3. What Expands in an Expanding Universe?

    Directory of Open Access Journals (Sweden)

    JOSÉ A. DE FREITAS PACHECO

    2015-12-01

    Full Text Available ABSTRACT In the present investigation, the possible effects of the expansion of the Universe on systems bonded either by gravitational or electromagnetic forces, are reconsidered. It will be shown that the acceleration (positive or negative of the expanding background, is the determinant factor affecting planetary orbits and atomic sizes. In the presently accepted cosmology (ΛCDM all bonded systems are expanding at a decreasing rate that tends to be zero as the universe enters in a de Sitter phase. It is worth mentioning that the estimated expansion rates are rather small and they can be neglected for all practical purposes.

  4. The expanding universe: an introduction

    OpenAIRE

    Pössel, Markus

    2017-01-01

    An introduction to the physics and mathematics of the expanding universe, using no more than high-school level / undergraduate mathematics. Covered are the basics of scale factor expansion, the dynamics of the expanding universe, various distance concepts and the generalized redshift-luminosity relation, among other topics.

  5. Neutrinos in an expanding Universe

    International Nuclear Information System (INIS)

    Wigmans, Richard

    2015-01-01

    The Universe contains several billion neutrinos for each nucleon. In this paper, we follow the history of these relic neutrinos as the Universe expanded. At present, their typical velocity is a few hundred km/s and, therefore, their spectra are affected by gravitational forces. This may have led to a phenomenon that could explain two of todays great mysteries: The large-scale structure of the Universe and the increasing rate at which it expands. (paper)

  6. The expanding universe

    CERN Document Server

    Lew, Kristi

    2011-01-01

    People have always been fascinated with the stars above and the universe that contains them. Over the years, astronomers have developed numerous theories to explain how the universe began, how it works, and what its ultimate fate will be. But all of the scientists' questions are far from answered. The Expanding Universe goes beyond the creation of the universe to explain how scientists think the universe works, grows, and changes, including what great thinkers Isaac Newton and Albert Einstein had to say about its fate. Readers will also learn about how researchers are slowly shedding light on

  7. The Expanding Universe: Dark Energy

    Energy Technology Data Exchange (ETDEWEB)

    Lincoln, Don [Fermilab; Nord, Brian [Fermilab

    2014-09-01

    In 1998, observations of distant supernovae led physicists that not only was the universe expanding, but the expansion was speeding up. In this article, we describe the evidence for an expanding universe and describe what physicists and cosmologists have learned in the intervening years. The target audience for this article is high school physics teachers and college physics professors at teaching institutions.

  8. The expanding universe of Sherlockian fandom and archival collections

    Directory of Open Access Journals (Sweden)

    Timothy Jerome Johnson

    2017-03-01

    Full Text Available Since 1887, in sometimes cosmic fashion, nearly every medium and format has been used in sharing the original 60 Sherlock Holmes adventures along with their pastiche and parodying offspring. Such creative energy is evidence of a literary big bang, and an expanding universe of creative possibilities, many of them now born digital or residing on digital platforms. We trace older and newer Sherlockian enthusiasms; their points of entry; the creative manifestations of these fandoms over time and through various media; and the emerging challenges and opportunities presented to library and archival professionals by the explosive growth of creative works, especially those produced during the last decade. Curatorial actions involving acquisition, preservation, description, and user discovery of these materials are considered alongside the relationship building necessary between curator and fan in acquiring evolving, dynamic new Sherlockian expressions and insights.

  9. Expanding a digital content management system for the growing digital media enterprise

    CERN Document Server

    Arthur, Magan H

    2013-01-01

    Building large integrated content management systems is a daunting task and there is little guidance for the implementation process for the mid-level manager. There are thousands of home grown or old standalone systems in need of upgrading and expanding to keep up with the growing challenge of digital media. This book allows the non-technical executive to understand the key concepts and issues. It covers the technical process and business aspects of expanding a system.

  10. Entropy in an expanding universe

    International Nuclear Information System (INIS)

    Frautschi, S.

    1982-01-01

    The question of how the observed evolution of organized structures from initial chaos in the expanding universe can be reconciled with the laws of statistical mechanics is studied, with emphasis on effects of the expansion and gravity. Some major sources of entropy increase are listed. An expanding causal region is defined in which the entropy, though increasing, tends to fall further and further behind its maximum possible value, thus allowing for the development of order. The related questions of whether entropy will continue increasing without limit in the future, and whether such increase in the form of Hawking radiation or radiation from positronium might enable life to maintain itself permanently, are considered. Attempts to find a scheme for preserving life based on solid structures fail because events such as quantum tunneling recurrently disorganize matter on a very long but fixed time scale, whereas all energy sources slow down progressively in an expanding universe. However, there remains hope that other modes of life capable of maintaining themselves permanently can be found

  11. An Expanding Universe in the Classroom.

    Science.gov (United States)

    Chandler, David

    1991-01-01

    Two computer-generated star charts that can be used as overlay transparencies to show an expanding universe are presented. Directions on how to use the star charts to determine the Hubble constant and the age of the universe are provided. (KR)

  12. Tunneling in expanding Universe: Euclidean and Hamiltonian approaches

    International Nuclear Information System (INIS)

    Goncharov, A.S.; Linde, A.D.

    1986-01-01

    The theory of the false vacuum decay in de Sitter space and in the inflationary Universe, and also the theory of the Universe creation ''from nothing'' are discussed. This explained why tunneling in the inflationary Universe differs from that in de Sitter space and cannot be exactly homogeneous. It is shown that in several important cases the Euclidean approach should be considerably modified or is absolutely inapplicable for the description of tunneling in the expanding Universe and of the process of the quantum creation of the Universe. The Hamiltonian approach to the theory of tunneling in expanding Universe is developed. The results obtained by this method are compared with the results obtained by the Euclidean approach

  13. Influence Of Collapsing Matter On The Enveloping Expanding Universe

    OpenAIRE

    Choudhury, A. Latif

    2005-01-01

    Using a collapsing matter model at the center of an expanding universe as described by Weinberg we assume a special type of generated pressure. This pressure transmits into the surrounding expanding universe. Under certain restriction the ensuing hubble parameter is positive. The deacceleration parameter fluctuates with time, indicating that the universe accelerates for certain time and decelerates for other time intervals.

  14. Magnetic fields in an expanding universe

    International Nuclear Information System (INIS)

    Kastor, David; Traschen, Jennie

    2014-01-01

    We find a solution to 4D Einstein–Maxwell theory coupled to a massless dilaton field, for all values of the dilaton coupling, describing a Melvin magnetic field in an expanding universe with ‘stiff matter’ equation of state parameter w = +1. As the universe expands, magnetic flux becomes more concentrated around the symmetry axis for dilaton coupling a<1/√3 and more dispersed for a>1/√3. An electric field circulates around the symmetry axis in the direction determined by Lenz's law. For a = 0 the magnetic flux through a disc of fixed comoving radius is proportional to the proper area of the disc. This result disagrees with the usual expectation based on a test magnetic field that this flux should be constant, and we show why this difference arises. We also find a Melvin solution in an accelerating universe with w = −7/9 for a dilaton field with a certain exponential potential. (paper)

  15. Gravitational instantons and separation of an expanding Universe

    International Nuclear Information System (INIS)

    Rubakov, V.A.; Tinyakov, P.G.

    1988-01-01

    Instanton, describing the separation of closed small-size classically inflating Universe from the plane Universe, was found in the model of gravitational field, interacting with matter fields. Existence of such instantons provides the possibility of expanding Universe self-birth

  16. Black holes in an expanding universe.

    Science.gov (United States)

    Gibbons, Gary W; Maeda, Kei-ichi

    2010-04-02

    An exact solution representing black holes in an expanding universe is found. The black holes are maximally charged and the universe is expanding with arbitrary equation of state (P = w rho with -1 < or = for all w < or = 1). It is an exact solution of the Einstein-scalar-Maxwell system, in which we have two Maxwell-type U(1) fields coupled to the scalar field. The potential of the scalar field is an exponential. We find a regular horizon, which depends on one parameter [the ratio of the energy density of U(1) fields to that of the scalar field]. The horizon is static because of the balance on the horizon between gravitational attractive force and U(1) repulsive force acting on the scalar field. We also calculate the black hole temperature.

  17. Parameter estimation for an expanding universe

    Directory of Open Access Journals (Sweden)

    Jieci Wang

    2015-03-01

    Full Text Available We study the parameter estimation for excitations of Dirac fields in the expanding Robertson–Walker universe. We employ quantum metrology techniques to demonstrate the possibility for high precision estimation for the volume rate of the expanding universe. We show that the optimal precision of the estimation depends sensitively on the dimensionless mass m˜ and dimensionless momentum k˜ of the Dirac particles. The optimal precision for the ratio estimation peaks at some finite dimensionless mass m˜ and momentum k˜. We find that the precision of the estimation can be improved by choosing the probe state as an eigenvector of the hamiltonian. This occurs because the largest quantum Fisher information is obtained by performing projective measurements implemented by the projectors onto the eigenvectors of specific probe states.

  18. Dynamical 3-Space: Black Holes in an Expanding Universe

    Directory of Open Access Journals (Sweden)

    Rothall D. P.

    2013-10-01

    Full Text Available Black holes are usually studied without including effects of the expanding universe. However in some recent studies black holes have been embedded in an expanding universe, in order to determine the interplay, if any, of these two dynamical processes. Dynamical 3-space theory contains time independent solutions for black holes, which are spatial in-flows, and separately the time dependent Hubble expansion. This theory has explained numerous puzzles in observational astrophysics and contains 3 constants; G, - which from experimental data turns out to be the fine structure constant, and - which is a small but nonzero distance, possibly a Planck-type length. The Hubble expansion in the dynamical 3-space theory cannot be “switched o”, forcing the study, first, of isolated black holes coexisting with the expanding universe. It is shown that a time dependent black hole and expanding universe solution exists. The nature and implications of these solutions are discussed as they evolve over time. A dynamical network of black holes and induced linking cosmic filaments forming bubble structures is discussed, as a consequence of dynamical 3-space undergoing a dynamical breakdown of homogeneity and isotropy, even in the absence of baryonic matter.

  19. Different conceptions of digital university in Ibero-America

    Directory of Open Access Journals (Sweden)

    Jesús Salinas Ibáñez

    2018-03-01

    Full Text Available Recently, the term of digital university has been a buzzword or trend in different contexts in Spanish-speaking countries. However, there is no available clear definition of the concept that helps us specify its implementation further. Therefore, this study was aimed at analyzing the different existing conceptions of digital university in Ibero-America, via a systematic literature review and the analysis of the semantic field through a network analysis. This enabled us to identify what was understood by being a digital university from the perspective of different Ibero-American universities. Spanish keywords derived from the thesaurus -including “digital university”- were used in the search through diverse catalogs and databases, and documents of different kinds were found between 2007 and 2017. The literature review was based on the abstracts of the documents and we considered the creation of categories with diverse topics that represent how Ibero-America understands the digital university and with which restrictions has to deal with. The discussion incorporates the integration of those categories and topics into the digital university models that were previously identified. As a conclusion, a summary on the concept of digital university is presented and we point towards some remarks so that the conception is made a reality in its practice.

  20. On the Propagation of Light in an Expanding Universe

    Directory of Open Access Journals (Sweden)

    Yuri Heymann

    2013-07-01

    Full Text Available The equation of the propagation of light in an expanding Universe is derived based on the definition of comoving distances. A numerical method is proposed to solve this equation jointly with the Friedmann equation. As the equation of the propagation of light in an expanding Universe defines a horizon of the visible Universe, this puts a constraint on cosmological models in order to be consistent with an upper limit for redshifts observed from galaxies. This puzzle is challenging current expansionist cosmological models.

  1. The Artful Universe Expanded

    International Nuclear Information System (INIS)

    Bassett, B A

    2005-01-01

    The cosmos is an awfully big place and there is no better guide to its vast expanse and fascinating nooks and crannies than John Barrow. A professor of mathematical sciences at Cambridge University, Barrow embodies that rare combination of highly polished writer and expert scientist. His deft touch brings together the disparate threads of human knowledge and weaves them into a tapestry as rich and interesting for the expert as it is for the layperson. The Artful Universe Expanded is an updated edition of this popular book first published in 1995. It explores the deeply profound manner in which natural law and the nature of the cosmos have moulded and shaped us, our cultures and the very form of our arts and music-a new type of 'cosmic' anthropology. The main themes Barrow chooses for revealing this new anthropology are the subjects of evolution, the size of things, the heavens and the nature of music. The book is a large, eclectic repository of knowledge often unavailable to the layperson, hidden in esoteric libraries around the world. It rivals The Da Vinci Code for entertainment value and insights, but this time it is Nature's code that is revealed. It is rare indeed to find common threads drawn through topics as diverse as The Beetles, Bach and Beethoven or between Jackson Pollock, the Aztecs, Kant, Picasso, Byzantine mosaics, uranium-235 and the helix nebula. Barrow unerringly binds them together, presenting them in a stimulating, conversational style that belies the amount of time that must have gone into researching this book. Dip into it at random, or read it from cover to cover, but do read it. The Artful Universe Expanded is an entertaining antidote to the oft-lamented pressures to know more and more about less and less and the apparently inexorable march of specialization. On reading this book one can, for a short time at least, hold in one's mind a vision that unifies science, art and culture and glimpse a universal tapestry of great beauty. (book review)

  2. The Artful Universe Expanded

    Energy Technology Data Exchange (ETDEWEB)

    Bassett, B A [Institute of Cosmology and Gravitation, University of Portsmouth (United Kingdom)

    2005-07-29

    The cosmos is an awfully big place and there is no better guide to its vast expanse and fascinating nooks and crannies than John Barrow. A professor of mathematical sciences at Cambridge University, Barrow embodies that rare combination of highly polished writer and expert scientist. His deft touch brings together the disparate threads of human knowledge and weaves them into a tapestry as rich and interesting for the expert as it is for the layperson. The Artful Universe Expanded is an updated edition of this popular book first published in 1995. It explores the deeply profound manner in which natural law and the nature of the cosmos have moulded and shaped us, our cultures and the very form of our arts and music-a new type of 'cosmic' anthropology. The main themes Barrow chooses for revealing this new anthropology are the subjects of evolution, the size of things, the heavens and the nature of music. The book is a large, eclectic repository of knowledge often unavailable to the layperson, hidden in esoteric libraries around the world. It rivals The Da Vinci Code for entertainment value and insights, but this time it is Nature's code that is revealed. It is rare indeed to find common threads drawn through topics as diverse as The Beetles, Bach and Beethoven or between Jackson Pollock, the Aztecs, Kant, Picasso, Byzantine mosaics, uranium-235 and the helix nebula. Barrow unerringly binds them together, presenting them in a stimulating, conversational style that belies the amount of time that must have gone into researching this book. Dip into it at random, or read it from cover to cover, but do read it. The Artful Universe Expanded is an entertaining antidote to the oft-lamented pressures to know more and more about less and less and the apparently inexorable march of specialization. On reading this book one can, for a short time at least, hold in one's mind a vision that unifies science, art and culture and glimpse a universal tapestry of great

  3. Digital Downsides: Exploring University Students' Negative Engagements with Digital Technology

    Science.gov (United States)

    Selwyn, Neil

    2016-01-01

    Digital technologies are now an integral feature of university study. As such, academic research has tended to concentrate on the potential of digital technologies to support, extend and even "enhance" student learning. This paper, in contrast, explores the rather more messy realities of students' engagements with digital technology. In…

  4. Hubble, Hubble's Law and the Expanding Universe

    Indian Academy of Sciences (India)

    Srimath

    H ubble's nam e is associated closely w ith the idea of an expanding universe as he discovered the relation between the recession velocity and the distances of galaxies. H ubble also did a lot of pioneering w ork on the distribution of galaxies in the universe. In this article we take a look at H ubble's law and discuss how it ...

  5. Discovery of Uniformly Expanding Universe

    Directory of Open Access Journals (Sweden)

    Cahill R. T.

    2012-01-01

    Full Text Available Saul Perlmutter and the Brian Schmidt – Adam Riess teams reported that their Friedmann-model GR-based analysis of their supernovae magnitude-redshift data re- vealed a new phenomenon of “dark energy” which, it is claimed, forms 73% of the energy / matter density of the present-epoch universe, and which is linked to the further claim of an accelerating expansion of the universe. In 2011 Perlmutter, Schmidt and Riess received the Nobel Prize in Physics “for the discovery of the accelerating ex- pansion of the Universe through observations of distant supernovae”. Here it is shown that (i a generic model-independent analysis of this data reveals a uniformly expanding universe, (ii their analysis actually used Newtonian gravity, and finally (iii the data, as well as the CMB fluctuation data, does not require “dark energy” nor “dark matter”, but instead reveals the phenomenon of a dynamical space, which is absent from the Friedmann model.

  6. Focusing of geodesic congruences in an accelerated expanding Universe

    International Nuclear Information System (INIS)

    Albareti, F.D.; Cembranos, J.A.R.; Cruz-Dombriz, A. de la

    2012-01-01

    We study the accelerated expansion of the Universe through its consequences on a congruence of geodesics. We make use of the Raychaudhuri equation which describes the evolution of the expansion rate for a congruence of timelike or null geodesics. In particular, we focus on the space-time geometry contribution to this equation. By straightforward calculation from the metric of a Robertson-Walker cosmological model, it follows that in an accelerated expanding Universe the space-time contribution to the Raychaudhuri equation is positive for the fundamental congruence, favoring a non-focusing of the congruence of geodesics. However, the accelerated expansion of the present Universe does not imply a tendency of the fundamental congruence to diverge. It is shown that this is in fact the case for certain congruences of timelike geodesics without vorticity. Therefore, the focusing of geodesics remains feasible in an accelerated expanding Universe. Furthermore, a negative contribution to the Raychaudhuri equation from space-time geometry which is usually interpreted as the manifestation of the attractive character of gravity is restored in an accelerated expanding Robertson-Walker space-time at high speeds

  7. Focusing of geodesic congruences in an accelerated expanding Universe

    Energy Technology Data Exchange (ETDEWEB)

    Albareti, F.D.; Cembranos, J.A.R. [Departamento de Física Teórica I, Universidad Complutense de Madrid, Ciudad Universitaria, E-28040 Madrid (Spain); Cruz-Dombriz, A. de la, E-mail: fdalbareti@estumail.ucm.es, E-mail: cembra@fis.ucm.es, E-mail: alvaro.delacruz-dombriz@uct.ac.za [Astrophysics, Cosmology and Gravity Centre (ACGC), University of Cape Town, 7701 Rondebosch, Cape Town (South Africa)

    2012-12-01

    We study the accelerated expansion of the Universe through its consequences on a congruence of geodesics. We make use of the Raychaudhuri equation which describes the evolution of the expansion rate for a congruence of timelike or null geodesics. In particular, we focus on the space-time geometry contribution to this equation. By straightforward calculation from the metric of a Robertson-Walker cosmological model, it follows that in an accelerated expanding Universe the space-time contribution to the Raychaudhuri equation is positive for the fundamental congruence, favoring a non-focusing of the congruence of geodesics. However, the accelerated expansion of the present Universe does not imply a tendency of the fundamental congruence to diverge. It is shown that this is in fact the case for certain congruences of timelike geodesics without vorticity. Therefore, the focusing of geodesics remains feasible in an accelerated expanding Universe. Furthermore, a negative contribution to the Raychaudhuri equation from space-time geometry which is usually interpreted as the manifestation of the attractive character of gravity is restored in an accelerated expanding Robertson-Walker space-time at high speeds.

  8. Gravitational mass in an expanding universe

    International Nuclear Information System (INIS)

    Sannan, S.

    1986-01-01

    A test for the Hawking definition of mass is given in a Tolman--Bondi model that asymptotically approaches the open Friedmann universe. An expanding universe filled with dustlike matter of zero pressure is considered. The matter distribution is spherically symmetric but nonhomogeneous. With appropriate boundary conditions, the calculation yields a finite and nonzero value for the Hawking mass, measured as a deviation from a ''renormalized'' zero mass in the unperturbed Friedmann model. These boundary conditions are more restrictive than those found for a model with gravitational radiation

  9. MILLION BOOK UNIVERSAL DIGITAL LIBRARY PROJECTS: INDIA

    OpenAIRE

    Waghmode, S. S.

    2009-01-01

    Digital Library of India is a digital library of books, which is free-to-read, searchable, predominantly in India languages, available to everyone over the Internet. Very soon it is expected that this portal would provide a gateway to Indian Digital Libraries in Science, Arts, Culture, Music, Movies, Traditional Medicine, Palm Leaves and many more. This project is collaboration between Indian Institute of Science, Bangalore, Universities and Carnegie Mellon University under MILLION BOOK UNIVE...

  10. A Rapidly Expanding Bose-Einstein Condensate: An Expanding Universe in the Lab

    Science.gov (United States)

    Eckel, S.; Kumar, A.; Jacobson, T.; Spielman, I. B.; Campbell, G. K.

    2018-04-01

    We study the dynamics of a supersonically expanding, ring-shaped Bose-Einstein condensate both experimentally and theoretically. The expansion redshifts long-wavelength excitations, as in an expanding universe. After expansion, energy in the radial mode leads to the production of bulk topological excitations—solitons and vortices—driving the production of a large number of azimuthal phonons and, at late times, causing stochastic persistent currents. These complex nonlinear dynamics, fueled by the energy stored coherently in one mode, are reminiscent of a type of "preheating" that may have taken place at the end of inflation.

  11. Expanding the Education Universe: A Fifty-State Strategy for Course Choice

    Science.gov (United States)

    Brickman, Michael

    2014-01-01

    After twenty years of expanding school-choice options, state leaders, educators, and families have a new tool: course choice, a strategy for students to learn from unconventional providers that might range from top-tier universities or innovative community colleges to local employers, labs, or hospitals. In "Expanding the Education Universe:…

  12. A Rapidly Expanding Bose-Einstein Condensate: An Expanding Universe in the Lab

    Directory of Open Access Journals (Sweden)

    S. Eckel

    2018-04-01

    Full Text Available We study the dynamics of a supersonically expanding, ring-shaped Bose-Einstein condensate both experimentally and theoretically. The expansion redshifts long-wavelength excitations, as in an expanding universe. After expansion, energy in the radial mode leads to the production of bulk topological excitations—solitons and vortices—driving the production of a large number of azimuthal phonons and, at late times, causing stochastic persistent currents. These complex nonlinear dynamics, fueled by the energy stored coherently in one mode, are reminiscent of a type of “preheating” that may have taken place at the end of inflation.

  13. Einstein's conversion from his static to an expanding universe

    Science.gov (United States)

    Nussbaumer, Harry

    2014-02-01

    In 1917 Einstein initiated modern cosmology by postulating, based on general relativity, a homogenous, static, spatially curved universe. To counteract gravitational contraction he introduced the cosmological constant. In 1922 Alexander Friedman showed that Albert Einstein's fundamental equations also allow dynamical worlds, and in 1927 Georges Lemaître, backed by observational evidence, concluded that our universe was expanding. Einstein impetuously rejected Friedman's as well as Lemaître's findings. However, in 1931 he retracted his former static model in favour of a dynamic solution. This investigation follows Einstein on his hesitating path from a static to the expanding universe. Contrary to an often advocated belief the primary motive for his switch was not observational evidence, but the realisation that his static model was unstable.

  14. Scalar-Tensor Black Holes Embedded in an Expanding Universe

    Science.gov (United States)

    Tretyakova, Daria; Latosh, Boris

    2018-02-01

    In this review we focus our attention on scalar-tensor gravity models and their empirical verification in terms of black hole and wormhole physics. We focus on a black hole, embedded in an expanding universe, describing both cosmological and astrophysical scales. We show that in scalar-tensor gravity it is quite common that the local geometry is isolated from the cosmological expansion, so that it does not backreact on the black hole metric. We try to extract common features of scalar-tensor black holes in an expanding universe and point out the gaps that must be filled.

  15. Scalar-Tensor Black Holes Embedded in an Expanding Universe

    Directory of Open Access Journals (Sweden)

    Daria Tretyakova

    2018-02-01

    Full Text Available In this review, we focus our attention on scalar-tensor gravity models and their empirical verification in terms of black hole and wormhole physics. We focus on black holes, embedded in an expanding universe, describing both cosmological and astrophysical scales. We show that in scalar-tensor gravity it is quite common that the local geometry is isolated from the cosmological expansion, so that it does not backreact on the black hole metric. We try to extract common features of scalar-tensor black holes in an expanding universe and point out the issues that are not fully investigated.

  16. Digital Technologies as Education Innovation at Universities

    Science.gov (United States)

    Kryukov, Vladimir; Gorin, Alexey

    2017-01-01

    This paper analyses the use of digital technology-based education innovations in higher education. It demonstrated that extensive implementation of digital technologies in universities is the main factor conditioning the acceleration of innovative changes in educational processes, while digital technologies themselves become one of the key…

  17. University Libraries and Digital Learning Environments

    OpenAIRE

    2011-01-01

    University libraries around the world have embraced the possibilities of the digital learning environment, facilitating its use and proactively seeking to develop the provision of electronic resources and services. The digital environment offers opportunities and challenges for librarians in all aspects of their work – in information literacy, virtual reference, institutional repositories, e-learning, managing digital resources and social media. The authors in this timely book are leading exp...

  18. The Artful Universe Expanded

    Science.gov (United States)

    Barrow, John D.

    2005-07-01

    Our love of art, writes John Barrow, is the end product of millions of years of evolution. How we react to a beautiful painting or symphony draws upon instincts laid down long before humans existed. Now, in this enhanced edition of the highly popular The Artful Universe , Barrow further explores the close ties between our aesthetic appreciation and the basic nature of the Universe. Barrow argues that the laws of the Universe have imprinted themselves upon our thoughts and actions in subtle and unexpected ways. Why do we like certain types of art or music? What games and puzzles do we find challenging? Why do so many myths and legends have common elements? In this eclectic and entertaining survey, Barrow answers these questions and more as he explains how the landscape of the Universe has influenced the development of philosophy and mythology, and how millions of years of evolutionary history have fashioned our attraction to certain patterns of sound and color. Barrow casts the story of human creativity and thought in a fascinating light, considering such diverse topics as our instinct for language, the origins and uses of color in nature, why we divide time into intervals as we do, the sources of our appreciation of landscape painting, and whether computer-generated fractal art is really art. Drawing on a wide variety of examples, from the theological questions raised by St. Augustine and C.S. Lewis to the relationship between the pure math of Pythagoras and the music of the Beatles, The Artful Universe Expanded covers new ground and enters a wide-ranging debate about the meaning and significance of the links between art and science.

  19. Dissipation and fluctuation of quantum fields in expanding universes

    International Nuclear Information System (INIS)

    Morikawa, M.

    1990-01-01

    A stochastic dynamics of a long-wavelength part of a scalar field in an expanding universe is derived by using the influence functional method. Dissipation as well as fluctuation are derived for general parameters: a mass, a coupling to the scalar curvature, and a cutoff scale parameter. A dissipation-fluctuation relation is found with a temperature which is proportional to the Hawking temperature, but system dependent. The method is further applied to an expanding universe with a power law and yields the dispersion which agrees with that obtained by the regularization method. The back reaction to the background de Sitter space itself is also obtained

  20. Particle creation and particle number in an expanding universe

    International Nuclear Information System (INIS)

    Parker, Leonard

    2012-01-01

    I describe the logical basis of the method that I developed in 1962 and 1963 to define a quantum operator corresponding to the observable particle number of a quantized free scalar field in a spatially-flat isotropically expanding (and/or contracting) universe. This work also showed for the first time that particles were created from the vacuum by the curved spacetime of an expanding spatially-flat Friedmann–Lemaître–Robertson–Walker (FLRW) universe. The same process is responsible for creating the nearly scale-invariant spectrum of quantized perturbations of the inflaton scalar field during the inflationary stage of the expansion of the universe. I explain how the method that I used to obtain the observable particle number operator involved adiabatic invariance of the particle number (hence, the name adiabatic regularization) and the quantum theory of measurement of particle number in an expanding universe. I also show how I was led in a surprising way, to the discovery in 1964 that there would be no particle creation by these spatially-flat FLRW universes for free fields of any integer or half-integer spin satisfying field equations that are invariant under conformal transformations of the metric. The methods I used to define adiabatic regularization for particle number were based on generally-covariant concepts like adiabatic invariance and measurement that were fundamental and determined results that were unique to each given adiabatic order. This article is part of a special issue of Journal of Physics A: Mathematical and Theoretical in honour of Stuart Dowker's 75th birthday devoted to ‘Applications of zeta functions and other spectral functions in mathematics and physics’. (paper)

  1. Electromagnetic fields in an expanding universe

    International Nuclear Information System (INIS)

    Hogan, P.A.; Ellis, G.F.R.

    1989-01-01

    The asymptotic form of the electromagnetic field due to a bounded distribution of charge current in an open, expanding Friedmann--Lemaitre--Robertson--Walker universe is studied. The technique used is to first describe a mechanism for passing from a solution of Maxwell's vacuum field equations on Minkowskian space-time to a solution of Maxwell's field equations in a region free of charge current on the cosmological background. This is tested on the field of an accelerating point charge and then applied to the rigorous treatment of the asymptotic electromagnetic field of a bounded charge-current distribution in Minkowskian space-time given by Goldberg and Kerr [J. Math. Phys. 5, 172 (1964)]. A ''peeling expansion'' of the electromagnetic field in the expanding universe is obtained in inverse powers of a parameter that is proportional to the area distance along the generators of future null cones with vertices on the world line of a fundamental observer. The algebraic character of the two leading coefficients in the expansion is the same as that of the two leading coefficients in the Goldberg--Kerr expansion in Minkowskian space-time. In addition, bounds can be calculated, at any instant in the history of a fundamental observer, on all the coefficients in the peeling expansion, as a consequence of the evaluation of such bounds by Goldberg and Kerr in the case treated by them

  2. Hubble Diagram Test of Expanding and Static Cosmological Models: The Case for a Slowly Expanding Flat Universe

    Directory of Open Access Journals (Sweden)

    Laszlo A. Marosi

    2013-01-01

    Full Text Available We present a new redshift (RS versus photon travel time ( test including 171 supernovae RS data points. We extended the Hubble diagram to a range of z = 0,0141–8.1 in the hope that at high RSs, the fitting of the calculated RS/ diagrams to the observed RS data would, as predicted by different cosmological models, set constraints on alternative cosmological models. The Lambda cold dark matter (ΛCDM, the static universe model, and the case for a slowly expanding flat universe (SEU are considered. We show that on the basis of the Hubble diagram test, the static and the slowly expanding models are favored.

  3. Asymmetric creation of matter and antimatter in the expanding universe

    International Nuclear Information System (INIS)

    Papastamatiou, N.J.; Parker, L.

    1979-01-01

    We consider a simple model in which the matter-antimatter asymmetry of the universe is brought about by an effective two-particle interaction that violates baryon-number conservation as well as CP invariance. The particle fields participating in the interaction are quantized, and their time development in an isotropically expanding universe is found to all orders in the coupling constant. Pair production by the asymmetric interaction, as well as symmetric production by the gravitational field of the expanding universe, appear simultaneously in the solution. Taking an initial state in which no particles participating in the asymmetric interaction are present, we find the created baryon-number density. We consider in more detail the case when the matter-antimatter asymmetry is produced during a stage when the radius of the universe is small with respect to its present value. We make numerical estimates of the created matter-antimatter asymmetry, and put limits on possible values of the parameters of this model

  4. BOOK REVIEW: The Artful Universe Expanded

    Science.gov (United States)

    Bassett, B. A.

    2005-07-01

    The cosmos is an awfully big place and there is no better guide to its vast expanse and fascinating nooks and crannies than John Barrow. A professor of mathematical sciences at Cambridge University, Barrow embodies that rare combination of highly polished writer and expert scientist. His deft touch brings together the disparate threads of human knowledge and weaves them into a tapestry as rich and interesting for the expert as it is for the layperson. The Artful Universe Expanded is an updated edition of this popular book first published in 1995. It explores the deeply profound manner in which natural law and the nature of the cosmos have moulded and shaped us, our cultures and the very form of our arts and music—a new type of `cosmic' anthropology. The main themes Barrow chooses for revealing this new anthropology are the subjects of evolution, the size of things, the heavens and the nature of music. The book is a large, eclectic repository of knowledge often unavailable to the layperson,\\endcolumn hidden in esoteric libraries around the world. It rivals The Da Vinci Code for entertainment value and insights, but this time it is Nature’s code that is revealed. It is rare indeed to find common threads drawn through topics as diverse as The Beetles, Bach and Beethoven or between Jackson Pollock, the Aztecs, Kant, Picasso, Byzantine mosaics, uranium-235 and the helix nebula. Barrow unerringly binds them together, presenting them in a stimulating, conversational style that belies the amount of time that must have gone into researching this book. Dip into it at random, or read it from cover to cover, but do read it. The Artful Universe Expanded is an entertaining antidote to the oft-lamented pressures to know more and more about less and less and the apparently inexorable march of specialization. On reading this book one can, for a short time at least, hold in one’s mind a vision that unifies science, art and culture and glimpse a universal tapestry of great

  5. A Study of Digital Communications between Universities and Students

    Science.gov (United States)

    Drake, Perry D.

    2017-01-01

    This study examined the digital and social media communication practices of nine urban universities including UMSL and compared those to known corporate best practices. The purpose of this study was to (1) research how these universities are using social/digital communications to engage with students and prospective students; (2) compare the…

  6. On the creation of particles in some expanding closed universe

    International Nuclear Information System (INIS)

    Nariai, Hidekazu.

    1978-11-01

    The purpose of this letter is to study the pair creation of particles in an expanding universe by analyzing the dynamical behavior of the Feynman propagator. To deal with the pair creation of particles in the universe under consideration, concrete information about the Feynman propagator in the asymptotic region must be obtained. The Feynman propagator is compared with the corresponding one in case of Chitre-Hartle's model-universe. (Kato, T.)

  7. Three Dimensional Numerical Code for the Expanding Flat Universe

    Directory of Open Access Journals (Sweden)

    Kyoung W. Min

    1987-12-01

    Full Text Available The current distribution of galaxies may contain clues to the condition of the universe when the galaxies condensed and to the nature of the subsequent expansion of the universe. The development of this large scale structure can be studied by employing N-body computer simulations. The present paper describes the code developed for this purpose. The computer code calculates the motion of collisionless matter action under the force of gravity in an expanding flat universe. The test run of the code shows the error less than 0.5% in 100 iterations.

  8. Gravitational Clustering of Galaxies in an Expanding Universe ...

    Indian Academy of Sciences (India)

    2006-12-08

    Dec 8, 2006 ... Abstract. We inquire the phenomena of clustering of galaxies in an expanding universe from a theoretical point of view on the basis of ther- modynamics and correlation functions. The partial differential equation is developed both for the point mass and extended mass structures of a two-point correlation ...

  9. The Digitally Disadvantaged: Access to Digital Communication Technologies among First Year Students at a Rural South African University

    Science.gov (United States)

    Oyedemi, Toks; Mogano, Saki

    2018-01-01

    Considering the importance of digital skills in university education, this article reports on a study which examined access to technology among first year students at a rural South African university. The study focused on the digital readiness of students prior to their admission to the university, since many universities provide access to…

  10. `Un-Darkening' the Cosmos: New laws of physics for an expanding universe

    Science.gov (United States)

    George, William

    2017-11-01

    Dark matter is believed to exist because Newton's Laws are inconsistent with the visible matter in galaxies. Dark energy is necessary to explain the universe expansion. (also available from www.turbulence-online.com) suggested that the equations themselves might be in error because they implicitly assume that time is measured in linear increments. This presentation couples the possible non-linearity of time with an expanding universe. Maxwell's equations for an expanding universe with constant speed of light are shown to be invariant only if time itself is non-linear. Both linear and exponential expansion rates are considered. A linearly expanding universe corresponds to logarithmic time, while exponential expansion corresponds to exponentially varying time. Revised Newton's laws using either leads to different definitions of mass and kinetic energy, both of which appear time-dependent if expressed in linear time. And provide the possibility of explaining the astronomical observations without either dark matter or dark energy. We would have never noticed the differences on earth, since the leading term in both expansions is linear in δ /to where to is the current age.

  11. The motion of an isolated gas group in expanding universe

    International Nuclear Information System (INIS)

    Zhang Banggu

    1993-01-01

    The contraction of an isolated gas group in the expanding universe has been discussed. It is found that in addition to the contracted conditions of the static isolated gas group, the initial gas group is straticulate statistical uniform and the initial radius is larger than a critical value D γ -1 , the contracted conditions of expanding case also include that the Hubble constant H is smaller than a constant D t

  12. Developing Digital Technologies for Undergraduate University Mathematics

    DEFF Research Database (Denmark)

    Triantafyllou, Eva; Timcenko, Olga

    2013-01-01

    Our research effort presented in this paper relates with developing digital tools for mathematics education at undergraduate university level. It focuses specifically on studies where mathematics is not a core subject but it is very important in order to cope with core subjects. For our design, we...... requirements for the development of digital tools that support mathematics teaching and learning at university level....... during lectures and exercise time. During these observations we were able to investigate how the applets were used in practice but also to get insight in the challenges that the students face during mathematics learning. These findings together with student feedback inspire the next round of design...

  13. Historical Notes on the Expanding Universe

    Science.gov (United States)

    Way, Michael J.; Belenkyi, Ari; Nussbaumer, Harry; Peacock, John

    2014-01-01

    The article Measuring the Hubble constant by Mario Livio and Adam Riess (Physics Today, October 2013, page 41) reviewed studies of the expanding universe from the 1920s to the present. Although the history of the subject underwent considerable compression to fit the length of a magazine article, we think it may leave a misleading impression of some of the key steps to our current understanding. We therefore offer the following clarifications. Most significantly, papers by Arthur Eddington and by Willem de Sitter in 1930, who successfully promoted Georges Lematres 1927 article for the Scientific Society of Brussels, effected a paradigm shift in interpretation of extragalactic redshifts in 1930. Before then, the astronomical community was generally unaware of the existence of nonstatic cosmological solutions and did not broadly appreciate that redshifts could be thought of locally as Doppler shifts in an expanding matter distribution. Certainly, in 1929 Edwin Hubble referred only to the de Sitter solution of 1917. At the time, the relation between distance and redshift predicted in that model was generally seen purely as a manifestation of static spacetime curvature.

  14. Get the Digital Edge: linking students’ attitudes towards digital literacy and employability at the University of Westminster

    Directory of Open Access Journals (Sweden)

    Emma Woods

    2013-12-01

    Full Text Available The University of Westminster is located in London and is celebrating 175 years as an educational institution this year. A key part of the University's vision is in "building the next generation of highly employable global citizens to shape the future" (University of Westminster, 2013. This vision inspired us to look at the digital literacy skills our students need in order to be highly employable. In Spring 2012, the Information Services department at the University of Westminster secured Jisc funding to run a one year project exploring students' attitudes towards digital literacy and its relationship to employability for our students. The work is being carried out by a project board and a delivery group, which include members of staff from across the University who have an active interest in this area. We named the Project "DigitISE" (Digital Information Skills for Employability and colleagues involved with the project take turns in writing for its blog http://blog.westminster.ac.uk/jisc-employability/blog/ A questionnaire was circulated to find out about students' attitudes towards digital literacy and this was followed up by some focus groups. The headline findings from the survey are that 87.6% of students love digital technology and 81.5% believe themselves to be digitally literate. Attitudes vary significantly between subject areas. For example, with regard to the statement that the digital literacy skills needed in the courses get more complex as students progress through the course, students from the Business School agreed significantly more with this than did students from the School of Law, Social Sciences, Humanities and Languages or Architecture. The focus groups have supported the questionnaire findings and highlighted that students are largely unaware of the training that is already available to them. Ideas of how to market future training more effectively will therefore be an important outcome of this work. A further focus group

  15. D-brane anti-brane annihilation in an expanding universe

    International Nuclear Information System (INIS)

    Majumdar, Mahbub; Davis, Anne-Christine

    2003-01-01

    The time-varying density of D-branes and anti-D-branes in an expanding universe is calculated. The D-brane anti-brane annihilation rate is shown to be too small to compete with the expansion rate of a FRW type universe and the branes over-close the universe. This brane problem is analogous to the old monopole problem. Interestingly however, it is shown that small dimension D-branes annihilate more slowly than high dimension branes. Hence, an initially brany universe may be filled with only low dimension branes at late times. When combined with an appropriate late inflationary theory this leads to an attractive dynamical way to create a realistic braneworld scenario. (author)

  16. Are Digital Natives a Myth or Reality? University Students' Use of Digital Technologies

    Science.gov (United States)

    Margaryan, Anoush; Littlejohn, Allison; Vojt, Gabrielle

    2011-01-01

    This study investigated the extent and nature of university students' use of digital technologies for learning and socialising. The findings show that students use a limited range of mainly established technologies. Use of collaborative knowledge creation tools, virtual worlds, and social networking sites was low. "Digital natives" and students of…

  17. Browsing Your Virtual Library: The Case of Expanding Universe.

    Science.gov (United States)

    Daniels, Wayne; Enright, Jeanne; Mackenzie, Scott

    1997-01-01

    Describes "Expanding Universe: a classified search tool for amateur astronomy," a Web site maintained by the Metropolitan Toronto Reference Library which uses a modified form of the Dewey Decimal Classification to organize a large file of astronomy hotlinks. Highlights include structure, HTML coding, design requirements, and future…

  18. Evolution of gravitational orbits in the expanding universe

    International Nuclear Information System (INIS)

    Sereno, Mauro; Jetzer, Philippe

    2007-01-01

    The gravitational action of the smooth energy-matter components filling in the universe can affect the orbit of a planetary system. Changes are related to the acceleration of the cosmological scale size R. In a universe with significant dark matter, a gravitational system expands or contracts according to the amount and equation of state of the dark energy. At present time, the Solar System, according to the ΛCDM scenario emerging from observational cosmology, should be expanding if we consider only the effect of the cosmological background. Its fate is determined by the equation of state of the dark energy alone. The mean motion and periastron precession of a planet are directly sensitive to Re/R, whereas variations with time in the semimajor axis and eccentricity are related to its time variation. Actual bounds on the cosmological deceleration parameters q 0 from accurate astrometric data of perihelion precession and changes in the third Kepler's law in the Solar System fall short of 10 orders of magnitude with respect to estimates from observational cosmology. Future radio-ranging measurements of outer planets could improve actual bounds by 5 orders of magnitude

  19. Multiparticle dynamics in an expanding universe

    Science.gov (United States)

    Anderson, James L.

    1995-11-01

    Approximate equations of motion for multiparticle systems in an expanding Einstein-deSitter universe are derived from the Einstein-Maxwell field equations using the Einstein-Infeld-Hoffmann surface integral method. At the Newtonian level of approximation one finds that, in comoving coordinates, both the Newtonian gravitational and Coulomb interactions in these equations are multiplied by the inverse third power of the scale factor R(t) appearing in the Einstein-deSitter field and they acquire a cosmic ``drag'' term. Nevertheless, both the period and luminosity size of bound two-body systems whose period is small compared to the Hubble time are found to be independent of t.

  20. Painful Na-channelopathies: an expanding universe.

    Science.gov (United States)

    Waxman, Stephen G

    2013-07-01

    The universe of painful Na-channelopathies--human disorders caused by mutations in voltage-gated sodium channels--has recently expanded in three dimensions. We now know that mutations of sodium channels cause not only rare genetic 'model disorders' such as inherited erythromelalgia and channelopathy-associated insensitivity to pain but also common painful neuropathies. We have learned that mutations of NaV1.8, as well as mutations of NaV1.7, can cause painful Na-channelopathies. Moreover, recent studies combining atomic level structural models and pharmacogenomics suggest that the goal of genomically guided pain therapy may not be unrealistic. Copyright © 2013 Elsevier Ltd. All rights reserved.

  1. On Dark Energy and Matter of the Expanding Universe

    Directory of Open Access Journals (Sweden)

    Lehnert B.

    2009-04-01

    Full Text Available At present the expanding universe is observed to be dominated by the not fully under- stood concepts of dark energy and matter, in a conceived almost flat Euclidian geometry. As one of the possible efforts to understand the global behaviour of the expanding uni- verse, the present paper attempts to explain these concepts in terms of the pressure force and gravity of a spherical photon gas cloud of zero point energy, in a flat geometry. A difficult point of the conventional theory concerns the frequency distribution of the zero point energy oscillations which leads to the unacceptable result of an infinite total en- ergy per unit volume. A modification of this distribution is therefore proposed which results in finite energy density. A corresponding equilibrium state is investigated, as well as small dynamic deviations from it, to form a basis for a model of the expanding universe. Provided that the crucial points of the present approach hold true, the model satisfies the requirements of cosmic linear dimensions, results in an estimated accelera- tion of the expansion being of the order of the observed one, presents a possible solution of the coincidence problem of dark energy and matter, and provides one of the possible explanations of the observed excess of high-energy electrons and positrons in recent balloon and satellite experiments.

  2. Application of Digital Cybersecurity Approaches to University Management--VFU SMART STUDENT

    Science.gov (United States)

    Nedyalkova, Anna; Bakardjieva, Teodora; Nedyalkov, Krasimir

    2016-01-01

    This paper suggests digital approaches in university management. Digital transformation requires leadership that can maintain and balance competing interests from faculty, administrators, students and others. The team of Varna Free University designed a flexible proper solution VFU SMART STUDENT aiming at lower operating costs and better…

  3. Investigating the Digital Addiction Level of the University Students According to Their Purposes for Using Digital Tools

    Science.gov (United States)

    Kesici, Ahmet; Tunç, Nazenin Fidan

    2018-01-01

    This study was carried out to investigate the digital addiction (DA) level of the university students according to their purposes for using digital tools. 527 students studying at the faculties of education of Erzincan, Dicle, and Siirt Universities participated this study in which general survey model was used. A form was used to reveal for which…

  4. Relict gravitational waves in the expanding Universe model and the grand unification scale

    International Nuclear Information System (INIS)

    Veryskin, A.V.; Rubakov, V.A.; Sazhin, M.V.

    1983-01-01

    The amplification of the vacuum fluctuations of the metric in the model of the expanding Universe was considered. The spectrum of the relict gravitational waves was chosen to be independent from the details of an evolution of the Universe after the phase transition. It is shown that the expanding Universe scenario is compatible with the experimental data on the anisotropy of the microwave background only if the vacuum energy density of the symmetric phase is much less than the Planck one. The theories of grand unification with not large values of the unification scale (one and a half order less than the Planck mass) are preferable from the point of view of cosmology

  5. Positive Deviance during Organization Change: Researchers' Social Construction of Expanded University Goals

    Science.gov (United States)

    Sutherland, Claire Euline

    2013-01-01

    Many universities have expanded from teaching only to include research goals, requiring shifts in organization behavior. An exploratory case study method was used to examine these dynamics among positive deviant researchers at the University of Technology, Jamaica (UTech), the single case examined, from a social construction perspective. As a…

  6. Exploring Digital Health Use and Opinions of University Students: Field Survey Study.

    Science.gov (United States)

    Montagni, Ilaria; Cariou, Tanguy; Feuillet, Tiphaine; Langlois, Emmanuel; Tzourio, Christophe

    2018-03-15

    During university, students face some potentially serious health risks, and their lifestyle can have a direct effect on health and health behaviors later in life. Concurrently, university students are digital natives having easy access to the internet and new technologies. Digital health interventions offer promising new opportunities for health promotion, disease prevention, and care in this specific population. The description of the current use of and opinions on digital health among university students can inform future digital health strategies and interventions within university settings. The aim of this exploratory study was to report on university students' use and opinions regarding information and communication technologies for health and well-being, taking into account sociodemographic and self-rated general and mental health correlates. This field survey was conducted from March to April 2017. An informed consent form and a paper questionnaire were given to students aged 18 to 24 years in 4 university campuses in Bordeaux, France. The survey was formulated in 3 sections: (1) sociodemographic characteristics and self-rated general and mental health, (2) information about the use of digital health, and (3) opinions about digital health. Data were analyzed using descriptive statistics and tests of independence. A total of 59.8% (303/507 females) students completed the questionnaire. Concerning digital health use, 34.9% (174/498) had at least 1 health app mostly for physical activity (49.4%, 86/174) and general health monitoring (41.4%, 72/174,), but only 3.9% (20/507) of students had a wearable device. Almost all (94.8%, 450/476) had searched for Web-based health-related information at least once in the last 12 months. The most sought health-related topics were nutrition (68.1%, 324/476); pain and illnesses (64.5%, 307/476); and stress, anxiety, or depression (51.1%, 243/476). Although Wikipedia (79.7%, 357/448) and general health websites (349/448, 77

  7. Exploring Digital Health Use and Opinions of University Students: Field Survey Study

    Science.gov (United States)

    Cariou, Tanguy; Feuillet, Tiphaine; Langlois, Emmanuel; Tzourio, Christophe

    2018-01-01

    Background During university, students face some potentially serious health risks, and their lifestyle can have a direct effect on health and health behaviors later in life. Concurrently, university students are digital natives having easy access to the internet and new technologies. Digital health interventions offer promising new opportunities for health promotion, disease prevention, and care in this specific population. The description of the current use of and opinions on digital health among university students can inform future digital health strategies and interventions within university settings. Objective The aim of this exploratory study was to report on university students’ use and opinions regarding information and communication technologies for health and well-being, taking into account sociodemographic and self-rated general and mental health correlates. Methods This field survey was conducted from March to April 2017. An informed consent form and a paper questionnaire were given to students aged 18 to 24 years in 4 university campuses in Bordeaux, France. The survey was formulated in 3 sections: (1) sociodemographic characteristics and self-rated general and mental health, (2) information about the use of digital health, and (3) opinions about digital health. Data were analyzed using descriptive statistics and tests of independence. Results A total of 59.8% (303/507 females) students completed the questionnaire. Concerning digital health use, 34.9% (174/498) had at least 1 health app mostly for physical activity (49.4%, 86/174) and general health monitoring (41.4%, 72/174,), but only 3.9% (20/507) of students had a wearable device. Almost all (94.8%, 450/476) had searched for Web-based health-related information at least once in the last 12 months. The most sought health-related topics were nutrition (68.1%, 324/476); pain and illnesses (64.5%, 307/476); and stress, anxiety, or depression (51.1%, 243/476). Although Wikipedia (79.7%, 357/448) and

  8. The Worldly Space: The Digital University in Network Time

    Science.gov (United States)

    Hassan, Robert

    2017-01-01

    This article considers the effect of information technology upon teaching, learning and research in the "digital university". In less than a generation the university has become a business like any other. It does so in the determining context of neoliberal globalisation and the computer revolution. The university develops through what we…

  9. The Information Seeking Behavior of Digital Native and Digital Immigrant Students of Bogor Agricultural University

    Directory of Open Access Journals (Sweden)

    Janti Gristinawati Sujana

    2018-02-01

    Full Text Available Technological expansion and the changing way individuals gain access to information has deeply impacted the structure of libraries – physically as well as conceptually. A new generation of digital services platforms for libraries is emerging, designed to provide a more comprehensive  approach  to  the  management  and  access  to  all  formats  of  library  materials. Despite the modernization of libraries and their adaption to the digital age, the library still hold a critical role within community to serve its users, continuing to be beacons of information sharing, learning, and entertainment even amidst tight fiscal times.  As one of the leading university in Indonesia, Bogor Agricultural University Library must find solutions to new challenges, overhaul many of their entrenched business processes, and foster systems that engage students.  This study examined the information seeking behavior of the digital native and digital immigrant students of Bogor Agricultural University, in order to remind the library that there are some changes happened in its users and to recommend the new services should be taken by the library. The similarities and differences in seeking information of those two group students were discussed.

  10. Quantum mechanics of electromagnetically bounded spin-1/2 particles in an expanding universe

    International Nuclear Information System (INIS)

    Audretsch, J.; Schaefer, G.

    1978-01-01

    The quantum mechanically described electron in an external electromagnetic field, both embedded in an expanding universe with shear, is discussed. This is important for the fundamental question as to whether a quantum mechanically treated atomic clock in curved space-time (based on a hydrogen atom) shows proper or gravitational time. Contradictory results reported by other authors seem to imply that quantum mechanics cannot be reconciled with curved space-time. It is shown that this is not the case for expanding Robertson-Walker universes. A Hilbert space formulation of the problem with special regard to the Hamiltonian is given. The respective influence of the cosmic expansion and the intrinsic and extrinsic curvatures of the cosmic hypersurfaces on bound quantum mechanical systems is treated in general. For the special case of an expanding 3-flat (epsilon= 0) Robertson-Walker universe it is shown that the energy levels of a hydrogen atom agree completely with the one in 4-flat space-time, so that in this case the hydrogen atom can be taken as atomic clock showing proper time. (author)

  11. Predicting Digital Informal Learning: An Empirical Study among Chinese University Students

    Science.gov (United States)

    He, Tao; Zhu, Chang; Questier, Frederik

    2018-01-01

    Although the adoption of digital technology has gained considerable attention in higher education, currently research mainly focuses on implementation in formal learning contexts. Investigating what factors influence students' digital informal learning is still unclear and limited. To understand better university students' digital informal…

  12. The development of structure in the expanding universe

    Science.gov (United States)

    Silk, J.; White, S. D.

    1978-01-01

    A model for clustering in an expanding universe is developed based on an application of the coagulation equation to the collision and aggregation of bound condensations. While the growth rate of clustering is determined by the rate at which density fluctuations reach the nonlinear regime and therefore depends on the initial fluctuation spectrum, the mass spectrum rapidly approaches a self-similar limiting form. This form is determined by the tidal processes which lead to the merging of condensations, and is not dependent on initial conditions.

  13. A Digital Library Example in the Digital Age: İstanbul Bilgi University Library and e-Resources

    Directory of Open Access Journals (Sweden)

    Banu Elçi

    2015-06-01

    Full Text Available This article describes the ongoing of the traditional library and service concept alteration to the library and service concept of the digital age and refers to an instance as İstanbul Bilgi University Library and e-Resources that pioneers technological advances and digital applications to be integrated into the library field. In this sense it involves services, developments, applications and projects provided by Bilgi Libraries.This article also accounts for a number of works which integrated digital resources and applications and social network interactions of the internet and the web of the digital age and how they are adjusted to the library area.In this context, it refers to an evolvement of a different approach of libraries and enhacements diverged from customary and adopted library service concepts and reveals through the medium of samples from İstanbul Bilgi University Library and e-Resources.

  14. Usability of PDF based Digital Textbooks to the Physically Disabled University Student.

    Science.gov (United States)

    Oku, Hidehisa; Matsubara, Kayoko; Booka, Masayuki

    2015-01-01

    Digital textbooks have been expected for providing multimedia information that the print textbooks could not handle. The original digital textbook can be fabricated relatively easily by using Epub or DAISY. Print textbooks are, however, employed as textbooks in the most of lectures in universities. Therefore, it is considered necessary to convert the content of the print textbook to the digital textbook simply and in a short time. In this paper, the digital textbook using PDF files of the print textbook was suggested as one of simple and practical solution to provide an alternative textbook for the physically disabled university student who has difficulty handling the print textbook. Then usability of the suggested method was evaluated experimentally from the point of workload. Result of the experiment indicates that the digital textbook fabricated as the alternative one for the print textbook by the suggested method has a potential to reduce workload for the physically disabled university students. In addition, the digital textbook with larger LCD display needs less workload than the print textbook. Then, there are not so much difference in the workload between the print book which is smaller than the print textbook and the digital book made from the print book.

  15. An Appraisal of Digital Reference Services in Nigerian University ...

    African Journals Online (AJOL)

    This study examined digital reference services in Nigeria university libraries. A descriptive research design of the ex-post facto was adopted in the study. The instrument used in collecting data for this study was the questionnaire. One hundred and twenty respondents were randomly selected from six Nigerian universities ...

  16. Virtualization of Universities Digital Media and the Organization of Higher Education Institutions

    CERN Document Server

    Pfeffer, Thomas

    2012-01-01

    The purpose of this volume is to shape conceptual tools to understand the impact of new information and communication technologies (ICTs) on the organization of universities. Traditional research-based universities, the most typical representatives of the higher education system, find themselves challenged by the speed and the wide range of technical innovations, but also by a vast array of implicit assumptions and explicit promises associated with the distribution of digital media.  The author observes that as universities increasingly use digital media (computers and the Internet) to accomplish their tasks, a transformation takes place in an evolutionary rather than in a revolutionary way.  Using the University of Klagenfurt as an in-depth case study, he explores such dynamic issues as how digital media affect the practice of research, the preservation and dissemination of knowledge (for example, through publishing and archiving), and delivery of education at universities.  More broadly, he considers iss...

  17. Statistical effect of interactions on particle creation in expanding universe

    International Nuclear Information System (INIS)

    Kodama, Hideo

    1982-01-01

    The statistical effect of interactions which drives many-particle systems toward equilibrium is expected to change the qualitative and quantitative features of particle creation in expanding universe. To investigate this problem a simplified model called the finite-time reduction model is formulated and applied to the scalar particle creation in the radiation dominant Friedmann universe. The number density of created particles and the entropy production due to particle creation are estimated. The result for the number density is compared with that in the conventional free field theory. It is shown that the statistical effect increases the particle creation and lengthens the active creation period. As for the entropy production it is shown that it is negligible for scalar particles in the Friedmann universe. (author)

  18. Gravitational wave memory in an expanding universe

    Science.gov (United States)

    Tolish, Alexander; Wald, Robert

    2016-03-01

    We investigate the gravitational wave memory effect in an expanding FLRW spacetime. We find that if the gravitational field is decomposed into gauge-invariant scalar, vector, and tensor modes after the fashion of Bardeen, only the tensor mode gives rise to memory, and this memory can be calculated using the retarded Green's function associated with the tensor wave equation. If locally similar radiation source events occur on flat and FLRW backgrounds, we find that the resulting memories will differ only by a redshift factor, and we explore whether or not this factor depends on the expansion history of the FLRW universe. We compare our results to related work by Bieri, Garfinkle, and Yau.

  19. Italian University Students and Digital Technologies: Some Results from a Field Research

    Science.gov (United States)

    Ferri, Paolo; Cavalli, Nicola; Costa, Elisabetta; Mangiatordi, Andrea; Mizzella, Stefano; Pozzali, Andrea; Scenini, Francesca

    Developments in information and communication technologies have raised the issue of how a kind of intergenerational digital divide can take place between "digital natives" and "digital immigrants". This can in turn have important consequences for the organization of educative systems. In this paper we present the result of a research performed during the course of 2008 to study how university students in Italy make use of digital technologies. The methodology was based on a mix of quantitative and qualitative approaches. A survey research was done, on a sample of 1186 students of the University of Milan-Bicocca, based on a questionnaire administrated through the Intranet of the University. A series of focus groups and in depth interviews with students, parents, and new media experts was furthermore performed. The results are consistent with the presence of a strong intergenerational divide. The implications of the results for the future organization of educative systems are discussed in the paper.

  20. Quantum mechanics of electromagnetically bounded spin-1/2 particles in expanding universes

    International Nuclear Information System (INIS)

    Audretsch, J.; Schaefer, G.

    1978-01-01

    In a preceding paper (Audretsch and Schaefer. Gen. Rel. Grav.; 9:243 (1977)) the central questions which justified the interest in an exact treatment of an electromagnetically bounded electron in expanding universes were outlined. Here the energy spectrum of the hydrogen atom in expanding Robertson-Walker universes is studied in detail using rigorous methods of functional analysis. Thereby, for closed universes (spherical case, epsilon = 1), the corresponding electromagnetic field needs special considerations. For the hyperbolic case (epsilon = -1) it is shown (a) that the Hamilton operator is uniquely self-adjoint, (b) that the continuous energy spectrum agrees with the one in 4-flat space-time and that the energy eigenvalues are bounded by +-msub(o), (c) that they approach Minkowski space spectrum for increasing curvature radius, and (d) that the hydrogen atom cannot be used as an atomic clock showing proper time. For the spherical case (epsilon 1) it is shown (a) that the Hamilton operator is uniquely self-adjoint and (b) that the energy spectrum is solely discrete. (author)

  1. University energy management improvement on basis of standards and digital technologies

    Directory of Open Access Journals (Sweden)

    Novikova Olga

    2018-01-01

    Full Text Available Nowadays to implement the energy management system it is important to fulfill not only the legal requirements but also to follow the set of recommendations prepared by international and national management standards. The purpose of this article is to prepare the concept and methodology for the optimization and improvement of the energy management system (EMS for Universities with implementation of legal requirements and recommendations from international and national management standards with the help of digital technologies. During the research the systematic analysis, complex approach, logical sampling and analogy were used. It is shown that this process should be done with the help of the process-based approach, in accordance with ISO 9001, and energy management ISO 50001. The authors developed the structure of the basic standard of energy management: "Guidelines for the energy management system". It is proved that the involvement of the technical senior students in the project of EMS improvement allows to expand their competencies for new technics and technologies. Cloud service Bitrix24 was chosen for IT-support of the project. During the study, a list of characteristics was used as a basis for creating a query to the technology department of the university. DBMS Microsoft Access was chosen for its creation. In addition, the possible results of initiating a single database containing all the information needed for accounting and control of energy supply were listed. Moreover, the possibility of automated energy management system implementation and its results were considered. The required actions described in this research can be implemented in any University, that will extend energy management to any University worldwide.

  2. Digital reading practices of university students

    Directory of Open Access Journals (Sweden)

    Karen Shirley LÓPEZ GIL

    2016-06-01

    Full Text Available This paper presents results of research on digital reading. The main objective of the research was to analyze the reading on screens practices of university students and how their practices are guided by professors and institutions of higher education. The research design was mixed and the type of study was descriptive of cross-sectional. The data collection techniques were questionnaire, document analysis and discussion group. ibm spss v.22 was used for statistical treatment of data and Atlas.Ti 7.0 was used for content analysis of qualitative information. The study showed that students usually read on screens, although many of their reading practices have recreational purposes. Students have troubles to find reliable information on the Internet when they have academic pursuits and frequently consult secondary sources. When texts are on screens, students generally scan information and surf from one document to another along hyperlinks. The boundaries between academic and leisure activities are not well defined; multitasking appears frequently. Students indicate there is a little guidance received from their professors or university. These findings show that students are constantly faced with digital reading, but practices do not always allow them to achieve their academic purposes, so it is necessary to strengthen the support offered to them, mainly from the classroom language. 

  3. The expanding universe of p53 targets.

    Science.gov (United States)

    Menendez, Daniel; Inga, Alberto; Resnick, Michael A

    2009-10-01

    The p53 tumour suppressor is modified through mutation or changes in expression in most cancers, leading to the altered regulation of hundreds of genes that are directly influenced by this sequence-specific transcription factor. Central to the p53 master regulatory network are the target response element (RE) sequences. The extent of p53 transactivation and transcriptional repression is influenced by many factors, including p53 levels, cofactors and the specific RE sequences, all of which contribute to the role that p53 has in the aetiology of cancer. This Review describes the identification and functionality of REs and highlights the inclusion of non-canonical REs that expand the universe of genes and regulation mechanisms in the p53 tumour suppressor network.

  4. Expanding School-District/University Partnerships to Advance Health Promoting Schools Implementation and Efficacy in Taiwan

    Science.gov (United States)

    Liu, Chieh-Hsing; Chang, Fong-Ching; Liao, Li-Ling; Niu, Yu-Zhen; Cheng, Chi-Chia; Shih, Shu-Fang; Chang, Tzu-Chau; Chou, Hsin-Pei

    2015-01-01

    In 2011, the Taiwan government expanded its support of school-district/university partnership programs that promote the implementation of the evidenced-based Health Promoting Schools (HPS) program. This study examined whether expanding the support for this initiative was effective in advancing HPS implementation, perceived HPS impact and perceived…

  5. Rhizomes and plateaus: A study of digital communities of practice in University College English Teaching

    DEFF Research Database (Denmark)

    Kjærgaard, Thomas

    2017-01-01

    Rhizomes and plateaus: A study of digital communities of practice in University College English Teaching......Rhizomes and plateaus: A study of digital communities of practice in University College English Teaching...

  6. Remarks to the creation of particles in an expanding universe

    International Nuclear Information System (INIS)

    Kreisel, E.

    1976-01-01

    It is shown that one can get spontaneous particle creation in an empty Minkowski-space, if one defines particle-number operator and Hilbert space in a similar way as in publications about particle creation in an expanding universe. Accordingly spontaneous particle creation does not originate in the gravitational field, but is connected with the non-uniqueness of the notion 'particle' and the chosen time-dependent particle- number operator. (author)

  7. Eight-Channel Digital Signal Processor and Universal Trigger Module

    Science.gov (United States)

    Skulski, Wojtek; Wolfs, Frank

    2003-04-01

    A 10-bit, 8-channel, 40 megasamples per second digital signal processor and waveform digitizer DDC-8 (nicknamed Universal Trigger Module) is presented. The digitizer features 8 analog inputs, 1 analog output for a reconstructed analog waveform, 16 NIM logic inputs, 8 NIM logic outputs, and a pool of 16 TTL logic lines which can be individually configured as either inputs or outputs. The first application of this device is to enhance the present trigger electronics for PHOBOS at RHIC. The status of the development and the first results are presented. Possible applications of the new device are discussed. Supported by the NSF grant PHY-0072204.

  8. Based on the Network Technology of Digital Campus Design and Analysis

    Directory of Open Access Journals (Sweden)

    Guo Hongbin

    2016-09-01

    Full Text Available In recent years, in order to meet the trend of popularization of higher education, expanding the scale of Chinese colleges and universities, and lead to university campuses scattered teaching resources, and information to be slow, poor accuracy and efficiency of the office problems have emerged. The construction of digital campus is not only working for the university scientific research, management provides a fast and convenient information service, and realize the education space and time, teaching contents, means and forms of further opening, largely improves the ability of teaching and scientific research ability and management level. This article through to the digital campus in the process of planning and design requirements, puts forward the conception and design of the construction of the digital campus network, then the digital campus network topology, design of core network, IP address assignment has carried on the discussion a rough. For the design of the digital campus construction provides a draft plan.

  9. Awareness and use of digital assistants by University of Ilorin ...

    African Journals Online (AJOL)

    Awareness and use of digital assistants by University of Ilorin postgraduate students. ... agents that help people with communication, information and time management. ... the use of DAs by postgraduate students of the University of Ilorin, Nigeria. ... By Country · List All Titles · Free To Read Titles This Journal is Open Access.

  10. Synergetic structuralization of matter from the gaseous state in an expanding universe

    International Nuclear Information System (INIS)

    Krempasky, J.

    1988-01-01

    The equation of evolution for the density of matter in an expanding universe is derived. The theory is based on the assumption that the formation of matter structures (galaxies and stars) starts from a gas-like material which is in a hydrodynamical motion due to Hubble's velocity. The influence of gravitation, rotation, diffusion and the scattering of particles due to thermal motion is taken into account. It is shown that the equation of evolution has two bifurcation points. One of them corresponds to the formation of galaxies and the other to the formation of stars. The critical mass of galaxies and stars is determined by the formula which is practically identical to the well-known Jeans formula. The present approach allows to calculate the critical time of the structuralisation of matter in an expanding universe, to explain the shape of galaxies and potentially also the mass spectrum of galaxies and stars. (author). 20 refs

  11. University students’ self-regulated learning using digital technologies

    Directory of Open Access Journals (Sweden)

    Carmen Yot-Domínguez

    2017-11-01

    Full Text Available Abstract Analysing the process by which students—whether at university or not—manage and facilitate their own learning has been a recurrent educational research problem. Recently, the question arises about how the development of strategies taking place during the aforementioned process could be made easier by using technologies. In an effort to know whether university students really use digital technologies to plan, organize and facilitate their own learning, we have proposed three research questions. Which technologies do university students use to self-regulate their learning? What self-regulated learning strategies do they develop using technologies? What profiles could be identified among students based on their use of self-regulation strategies with technology? To answer these questions, the “Survey of Self-regulated Learning with Technology at the University” was designed. Information from a sample group with 711 students from various universities located in the region of Andalusia (Spain was collected with this survey. The results indicate that university students, even when they are frequent users of digital technology, they tend not to use these technologies to regulate their own learning process. Of all technologies analysed, Internet information search and instant communication tools are used continually. In turn, the most generalised self-regulation learning strategies are those relative to social support. Nevertheless, students differ from each other regarding their use and frequency. There are groups of students who make use of self-regulation strategies when learning with technologies. In this regard, two distinctive groups of students have been identified, who show differentiated self-regulated levels.

  12. Creation of quantized particles, gravitons, and scalar perturbations by the expanding universe

    International Nuclear Information System (INIS)

    Parker, Leonard

    2015-01-01

    Quantum creation processes during the very rapid early expansion of the universe are believed to give rise to temperature anisotropies and polarization patterns in the CMB radiation. These have been observed by satellites such as COBE, WMAP, and PLANCK, and by bolometric instruments placed near the South Pole by the BICEP collaborations. The expected temperature anisotropies are well-confirmed. The B-mode polarization patterns in the CMB are currently under measurement jointly by the PLANCK and BICEP groups to determine the extent to which the B-modes can be attributed to gravitational waves from the creation of gravitons in the earliest universe.As the original discoverer of the quantum phenomenon of particle creation from vacuum by the expansion of the universe, I will explain how the discovery came about and how it relates to the current observations. The first system that I considered when I started my Ph.D. thesis in 1962 was the quantized minimally-coupled scalar field in an expanding FLRW (Friedmann, Lemaitré, Robertson, Walker) universe having a general continuous scale factor a(t) with continuous time derivatives. I also considered quantized fermion fields of spin-1/2 and the spin-1 massless photon field, as well as the quantized conformally-invariant field equations of arbitrary integer and half-integer spins that had been written down in the classical context for general gravitational metrics by Penrose.It was during 1962 that I proved that quanta of the minimally-coupled scalar field were created by the general expanding FLRW universe. This was relevant also to the creation of quantized perturbations of the gravitational field, since these perturbations satisfied linear field equations that could be quantized in the same way as the minimally-coupled scalar field equation. In fact, in 1946, E.M. Lifshitz had considered the classical Einstein gravitational field in FLRW expanding universes and had shown that the classical linearized Einstein field

  13. Study on Inertia as a Gravity Induced Property of Mass, in an Infinite Hubble Expanding Universe

    Directory of Open Access Journals (Sweden)

    Jeroen van Engelshoven

    2013-01-01

    Full Text Available Mass is experienced to have two intrinsic properties: inertia (resistance to acceleration and gravity (attraction to other masses. In this paper we evaluate the gravitational effect of all masses of the universe on an accelerated mass, starting from linearized general relativity. The gravitational interaction of all masses in a finite static universe model is shown to create a finite resistance to acceleration, which is inertia. Then, we propose a generalization of the linearized theory and evaluate the Hubble expanding universe. It is shown that the gravitational impact of an infinite expanding universe creates finite inertia, according to . The Friedmann critical mass density is found to be valid. The Mach principle is made explicit. The value and sign of the gravitational constant G are found to be of no consequence on an astronomical scale.

  14. Exploring the Digital Universe with Europe's Astrophysical Virtual Observatory

    Science.gov (United States)

    2001-12-01

    Information Centre Garching, Germany Tel.: +49-89-3200-6306 or +49-173-38-72-621 email: lars@eso.org Ray Footman The ASTROGRID Consortium/University of Edinburgh United Kingdom Tel.: +44-131-650-2249 email: r.footman@ed.ac.uk Philippe Chauvin Terapix/CDS CNRS, Delegation Paris A, IAP/INSU France Tel.: +33 1 44 96 43 36 email: philippe.chauvin@cnrs-dir.fr Agnes Villanueva University of Strasbourg France Tel.: +33 3 90 24 11 35 email: agnes.villanueva@adm-ulp.u-strasbg.fr Ian Morison University of Manchester/Jodrell Bank Observatory United Kingdom Tel.: +44 1477 572610 email: im@jb.man.ac.uk Appendix: Introduction to Europe's Astrophysical Virtual Observatory (AVO) The Digital Data Revolution Over the past thirty years, astronomers have moved from photographic and analogue techniques towards the use of high-speed, digital instruments connected to specialised telescopes to study the Universe. Whether these instruments are onboard spacecraft or located at terrestrial observatories, the data they produce are stored digitally on computer systems for later analysis. Two Challenges This data revolution has created two challenges for astronomers. Firstly, as the capability of digital detector systems has advanced, the volume of digital data that astronomical facilities are producing has expanded greatly. The rate of growth of the volume of stored data far exceeds the rate of increase in the performance of computer systems or storage devices. Secondly, astronomers have realised that many important insights into the deepest secrets in the Universe can come from combining information obtained at many wavelengths into a consistent and comprehensive physical picture . However, because the datasets from different parts of the spectrum come from different observatories using different instruments, the data are not easily combined. To unite data from different observatories, bridges must be built between digital archives to allow them to share data and "interoperate" - an important and

  15. The expanding universe of noncoding RNAs.

    Science.gov (United States)

    Hannon, G J; Rivas, F V; Murchison, E P; Steitz, J A

    2006-01-01

    The 71st Cold Spring Harbor Symposium on Quantitative Biology celebrated the numerous and expanding roles of regulatory RNAs in systems ranging from bacteria to mammals. It was clearly evident that noncoding RNAs are undergoing a renaissance, with reports of their involvement in nearly every cellular process. Previously known classes of longer noncoding RNAs were shown to function by every possible means-acting catalytically, sensing physiological states through adoption of complex secondary and tertiary structures, or using their primary sequences for recognition of target sites. The many recently discovered classes of small noncoding RNAs, generally less than 35 nucleotides in length, most often exert their effects by guiding regulatory complexes to targets via base-pairing. With the ability to analyze the RNA products of the genome in ever greater depth, it has become clear that the universe of noncoding RNAs may extend far beyond the boundaries we had previously imagined. Thus, as much as the Symposium highlighted exciting progress in the field, it also revealed how much farther we must go to understand fully the biological impact of noncoding RNAs.

  16. Global Digital Revolution and Africa: Transforming Nigerian Universities to World Class Institutions

    Science.gov (United States)

    Isah, Emmanuel Aileonokhuoya; Ayeni, A. O.

    2010-01-01

    This study examined the global digital revolution and the transformation of Nigerian universities. The study overviewed university developments world wide in line with what obtains in Nigeria. The study highlighted the several challenges that face Nigerian universities inclusive of poor funding, poor personnel and the poor exposure to global…

  17. Gravitational Lagrangians, Mach's Principle, and the Equivalence Principle in an Expanding Universe

    Science.gov (United States)

    Essén, Hanno

    2014-08-01

    Gravitational Lagrangians as derived by Fock for the Einstein-Infeld-Hoffmann approach, and by Kennedy assuming only a fourth rank tensor interaction, contain long range interactions. Here we investigate how these affect the local dynamics when integrated over an expanding universe out to the Hubble radius. Taking the cosmic expansion velocity into account in a heuristic manner it is found that these long range interactions imply Mach's principle, provided the universe has the critical density, and that mass is renormalized. Suitable higher order additions to the Lagrangians make the formalism consistent with the equivalence principle.

  18. Environmental CPT Violation in an Expanding Universe in String Theory

    CERN Document Server

    Ellis, John; Sarkar, Sarben

    2013-01-01

    We consider a model of an expanding Universe in string theory that yields `environmental' CPT violation for fermions, in the sense of different dispersion relations for fermions and antifermions. These are induced by a cosmological background with constant torsion provided by the Kalb-Ramond antisymmetric tensor field (axion) of the string gravitational multiplet. This effect induces different densities of neutrinos and antineutrinos while in chemical equilibrium, offering new scenarios for leptogenesis and baryogenesis even in the absence of CP violation.

  19. Self and other in digital learning spaces

    DEFF Research Database (Denmark)

    Schraube, Ernst

    expanding human activities, they are also powerful socio-political “forms of life” (Langdon Winner) constituting the relationship between self and the other and transforming fundamentally the practices of teaching and learning and the processes of generating knowledge. This paper explores the meaning......The teaching and learning spaces at universities are in transformation. With the incorporation of electronic technologies like ipads, smart boards and electronic platforms like “moodle” new digital spaces are emerging in educational practices. These technological spaces are not only useful tools...... of digital learning spaces at universities focusing on their implications for the learning processes of students. Usually studies of technology and learning identify teaching with learning and conceptualize research from an external, third-person standpoint. Starting with a discussion of the paradoxes...

  20. Dynamical evolution of domain walls in an expanding universe

    Science.gov (United States)

    Press, William H.; Ryden, Barbara S.; Spergel, David N.

    1989-01-01

    Whenever the potential of a scalar field has two or more separated, degenerate minima, domain walls form as the universe cools. The evolution of the resulting network of domain walls is calculated for the case of two potential minima in two and three dimensions, including wall annihilation, crossing, and reconnection effects. The nature of the evolution is found to be largely independent of the rate at which the universe expands. Wall annihilation and reconnection occur almost as fast as causality allows, so that the horizon volume is 'swept clean' and contains, at any time, only about one, fairly smooth, wall. Quantitative statistics are given. The total area of wall per volume decreases as the first power of time. The relative slowness of the decrease and the smoothness of the wall on the horizon scale make it impossible for walls to both generate large-scale structure and be consistent with quadrupole microwave background anisotropy limits.

  1. User Decisions in a (Partly) Digital World

    DEFF Research Database (Denmark)

    Veitch, Rob; Constantiou, Ioanna

    2012-01-01

    of behaviour, resources and legal availability. We test the model for film and music using causal data of access-mode decisions collected from students at two Danish universities. Our findings indicate that the economic considerations of price perception and legal availability are the most consistent factors......Technologies enabling digital piracy have expanded the variety of options available to users when deciding how to access a product. As a result, access-mode decisions for film and music are broader than for other goods where the piracy option is not as prevalent. This paper presents a model...... of access-mode decisions for film and music which integrates elements of previous digital piracy models and expands upon them to reflect the decision’s complexity. We depict the access-mode decision as being influenced by the user’s product desire, price perceptions, perceived risks, internal regulators...

  2. The expanding universe of prion diseases.

    Science.gov (United States)

    Watts, Joel C; Balachandran, Aru; Westaway, David

    2006-03-01

    Prions cause fatal and transmissible neurodegenerative disease. These etiological infectious agents are formed in greater part from a misfolded cell-surface protein called PrP(C). Several mammalian species are affected by the diseases, and in the case of "mad cow disease" (BSE) the agent has a tropism for humans, with negative consequences for agribusiness and public health. Unfortunately, the known universe of prion diseases is expanding. At least four novel prion diseases--including human diseases variant Creutzfeldt-Jakob disease (vCJD) and sporadic fatal insomnia (sFI), bovine amyloidotic spongiform encephalopathy (BASE), and Nor98 of sheep--have been identified in the last ten years, and chronic wasting disease (CWD) of North American deer (Odocoileus Specis) and Rocky Mountain elk (Cervus elaphus nelsoni) is undergoing a dramatic spread across North America. While amplification (BSE) and dissemination (CWD, commercial sourcing of cervids from the wild and movement of farmed elk) can be attributed to human activity, the origins of emergent prion diseases cannot always be laid at the door of humankind. Instead, the continued appearance of new outbreaks in the form of "sporadic" disease may be an inevitable outcome in a situation where the replicating pathogen is host-encoded.

  3. Digital Culture and Digital Library

    Directory of Open Access Journals (Sweden)

    Yalçın Yalçınkaya

    2016-12-01

    Full Text Available In this study; digital culture and digital library which have a vital connection with each other are examined together. The content of the research consists of the interaction of culture, information, digital culture, intellectual technologies, and digital library concepts. The study is an entry work to integrity of digital culture and digital library theories and aims to expand the symmetry. The purpose of the study is to emphasize the relation between the digital culture and digital library theories acting intersection of the subjects that are examined. Also the perspective of the study is based on examining the literature and analytical evaluation in both studies (digital culture and digital library. Within this context, the methodology of the study is essentially descriptive and has an attribute for the transmission and synthesis of distributed findings produced in the field of the research. According to the findings of the study results, digital culture is an inclusive term that describes the effects of intellectual technologies in the field of information and communication. Information becomes energy and the spectrum of the information is expanding in the vertical rise through the digital culture. In this context, the digital library appears as a new living space of a new environment. In essence, the digital library is information-oriented; has intellectual technology support and digital platform; is in a digital format; combines information resources and tools in relationship/communication/cooperation by connectedness, and also it is the dynamic face of the digital culture in time and space independence. Resolved with the study is that the digital libraries are active and effective in the formation of global knowing and/or mass wisdom in the process of digital culture.

  4. The Great Attractor: At the Limits of Hubble's Law of the Expanding Universe.

    Science.gov (United States)

    Murdin, Paul

    1991-01-01

    Presents the origin and mathematics of Hubble's Law of the expanding universe. Discusses limitations to this law and the related concepts of standard candles, elliptical galaxies, and streaming motions, which are conspicuous deviations from the law. The third of three models proposed as explanations for streaming motions is designated: The Great…

  5. Digitally Programmable High-Q Voltage Mode Universal Filter

    Directory of Open Access Journals (Sweden)

    D. Singh

    2013-12-01

    Full Text Available A new low-voltage low-power CMOS current feedback amplifier (CFA is presented in this paper. This is used to realize a novel digitally programmable CFA (DPCFA using transistor arrays and MOS switches. The proposed realizations nearly allow rail-to-rail swing capability at all the ports. Class-AB output stage ensures low power dissipation and high current drive capability. The proposed CFA/ DPCFA operates at supply voltage of ±0.75 V and exhibits bandwidth better than 95 MHz. An application of the DPCFA to realize a novel voltage mode high-Q digitally programmable universal filter (UF is given. Performances of all the proposed circuits are verified by PSPICE simulation using TSMC 0.25μm technology parameters.

  6. Digitization Of Federal University Libraries In Nigeria: A Doyen ...

    African Journals Online (AJOL)

    The Federal Government of Nigeria's proposal to digitize her university libraries is a right step in the right direction. The proposal amongst others intended to enhance the intellectual and manpower development as well as halt and reverse the falling standard of education in the country. The study discovered that for effective ...

  7. Digital phonocardiographic experiments and signal processing in multidisciplinary fields of university education

    Science.gov (United States)

    Nagy, Tamás; Vadai, Gergely; Gingl, Zoltán

    2017-09-01

    Modern measurement of physical signals is based on the use of sensors, electronic signal conditioning, analog-to-digital conversion and digital signal processing carried out by dedicated software. The same signal chain is used in many devices such as home appliances, automotive electronics, medical instruments, and smartphones. Teaching the theoretical, experimental, and signal processing background must be an essential part of improving the standard of higher education, and it fits well to the increasingly multidisciplinary nature of physics and engineering too. In this paper, we show how digital phonocardiography can be used in university education as a universal, highly scalable, exciting, and inspiring laboratory practice and as a demonstration at various levels and complexity. We have developed open-source software templates in modern programming languages to support immediate use and to serve as a basis of further modifications using personal computers, tablets, and smartphones.

  8. Digital phonocardiographic experiments and signal processing in multidisciplinary fields of university education

    International Nuclear Information System (INIS)

    Nagy, Tamás; Vadai, Gergely; Gingl, Zoltán

    2017-01-01

    Modern measurement of physical signals is based on the use of sensors, electronic signal conditioning, analog-to-digital conversion and digital signal processing carried out by dedicated software. The same signal chain is used in many devices such as home appliances, automotive electronics, medical instruments, and smartphones. Teaching the theoretical, experimental, and signal processing background must be an essential part of improving the standard of higher education, and it fits well to the increasingly multidisciplinary nature of physics and engineering too. In this paper, we show how digital phonocardiography can be used in university education as a universal, highly scalable, exciting, and inspiring laboratory practice and as a demonstration at various levels and complexity. We have developed open-source software templates in modern programming languages to support immediate use and to serve as a basis of further modifications using personal computers, tablets, and smartphones. (paper)

  9. Medical humanities and philosophy: is the universe expanding or contracting?

    Science.gov (United States)

    Stempsey, William E

    2007-12-01

    The question of whether the universe is expanding or contracting serves as a model for current questions facing the medical humanities. The medical humanities might aptly be described as a metamedical multiverse encompassing many separate universes of discourse, the most prominent of which is probably bioethics. Bioethics, however, is increasingly developing into a new interdisciplinary discipline, and threatens to engulf the other medical humanities, robbing them of their own distinctive contributions to metamedicine. The philosophy of medicine considered as a distinct field of study has suffered as a result. Indeed, consensus on whether the philosophy of medicine even constitutes a legitimate field of study is lacking. This paper presents an argument for the importance of a broad conception of the philosophy of medicine and the central role it should play in organizing and interpreting the various fields of study that make up the metamedical multiverse.

  10. Is the number of photons conserved in an expanding universe

    International Nuclear Information System (INIS)

    Novello, M.; Oliveira, L.A.R. de; Salim, J.M.

    1988-01-01

    A Friedman - like scenario in which - due to gravitational interaction - the total number of photons existing in the Universe changes as the Universe expands, is described. The photon number distribution function, in thermal equilibrium, exhibits an explicit dependence on a non-vanishing chemical potential term. This non-null value for the chemical potential of the photon is due to the presence of tidal effects, arising from the direct coupling of the photons - which, in a gravitational field, should not be treated as idealized point-like objects - to the curvature of space-time. As a result, the ratio nγ/n B between the numbers of photons and baryons in the Universe is shown to be not a constat, but rather a function of cosmic time, vanishing when the singularity of the standard FRW model is reached. In consequence, some of the supposed 'fundamental problems' of standard Cosmology (e.g., the explanation of the constancy of the ration nγ/n B and thus of the origin fo the total ammount of entropy observed today) are but apparent ones in the present scenario, and may be ipso facto solved. (author) [pt

  11. Is the Universe expanding? Fritz Zwicky and the early tired-light hypothesis

    Science.gov (United States)

    Kragh, Helge

    2017-04-01

    The recognition that the Universe is in a state of expansion is a milestone in modern astronomy and cosmology. The discovery dates from the early 1930s but was not unanimously accepted by either astronomers or physicists. The relativistic theory of the expanding Universe rested empirically on the redshift-distance law established by Edwin Hubble in 1929. However, although the theory offered a natural explanation of the observed galactic redshifts, these could be explained also on the assumption of a Static Universe. This was what Fritz Zwicky did when he introduced the idea of "tired light" in the fall of 1929. Hypotheses of a similar kind were proposed by several other scientists but their impact on mainstream astronomy and cosmology was limited. The paper offers a survey of tired-light hypotheses in the 1930s and briefly alludes to the later development.

  12. The expanding universe of prion diseases.

    Directory of Open Access Journals (Sweden)

    2006-03-01

    Full Text Available Prions cause fatal and transmissible neurodegenerative disease. These etiological infectious agents are formed in greater part from a misfolded cell-surface protein called PrP(C. Several mammalian species are affected by the diseases, and in the case of "mad cow disease" (BSE the agent has a tropism for humans, with negative consequences for agribusiness and public health. Unfortunately, the known universe of prion diseases is expanding. At least four novel prion diseases-including human diseases variant Creutzfeldt-Jakob disease (vCJD and sporadic fatal insomnia (sFI, bovine amyloidotic spongiform encephalopathy (BASE, and Nor98 of sheep-have been identified in the last ten years, and chronic wasting disease (CWD of North American deer (Odocoileus Specis and Rocky Mountain elk (Cervus elaphus nelsoni is undergoing a dramatic spread across North America. While amplification (BSE and dissemination (CWD, commercial sourcing of cervids from the wild and movement of farmed elk can be attributed to human activity, the origins of emergent prion diseases cannot always be laid at the door of humankind. Instead, the continued appearance of new outbreaks in the form of "sporadic" disease may be an inevitable outcome in a situation where the replicating pathogen is host-encoded.

  13. The expanding universe of prion diseases.

    Directory of Open Access Journals (Sweden)

    Joel C Watts

    2006-03-01

    Full Text Available Prions cause fatal and transmissible neurodegenerative disease. These etiological infectious agents are formed in greater part from a misfolded cell-surface protein called PrP(C. Several mammalian species are affected by the diseases, and in the case of "mad cow disease" (BSE the agent has a tropism for humans, with negative consequences for agribusiness and public health. Unfortunately, the known universe of prion diseases is expanding. At least four novel prion diseases--including human diseases variant Creutzfeldt-Jakob disease (vCJD and sporadic fatal insomnia (sFI, bovine amyloidotic spongiform encephalopathy (BASE, and Nor98 of sheep--have been identified in the last ten years, and chronic wasting disease (CWD of North American deer (Odocoileus Specis and Rocky Mountain elk (Cervus elaphus nelsoni is undergoing a dramatic spread across North America. While amplification (BSE and dissemination (CWD, commercial sourcing of cervids from the wild and movement of farmed elk can be attributed to human activity, the origins of emergent prion diseases cannot always be laid at the door of humankind. Instead, the continued appearance of new outbreaks in the form of "sporadic" disease may be an inevitable outcome in a situation where the replicating pathogen is host-encoded.

  14. Digital technologies, participatory learning and the transformation of students’ conduct of everyday life

    DEFF Research Database (Denmark)

    Schraube, Ernst

    expanding human activities, they are also powerful socio-political “forms of life” (Langdon Winner) transforming fundamentally the practice of teaching and learning as well as the students’ conduct of everyday life. The paper explores the meaning of digital learning spaces at universities (especially...

  15. Shifting gears higher - digital slides in graduate education - 4 years experience at Semmelweis University

    Directory of Open Access Journals (Sweden)

    Molnár Béla

    2010-11-01

    Full Text Available Abstract Background The spreading of whole slide imaging or digital slide systems in pathology as an innovative technique seems to be unstoppable. Successful introduction of digital slides in education has played a crucial role to reach this level of acceptance. Practically speaking there is no university institute where digital materials are not built into pathology education. At the 1st. Department of Pathology and Experimental Cancer Research, Semmelweis University optical microscopes have been replaced and for four years only digital slides have been used in education. The aim of this paper is to summarize our experiences gathered with the installation of a fully digitized histology lab for graduate education. Methods We have installed a digital histology lab with 40 PCs, two slide servers - one for internal use and one with external internet access. We have digitized hundreds of slides and after 4 years we use a set of 126 slides during the pathology course. A Student satisfaction questionnaire and a Tutor satisfaction questionnaire have been designed, both to be completed voluntarily to have feed back from the users. The page load statistics of the external slide server were evaluated. Results The digital histology lab served ~900 students and ~1600 hours of histology practice. The questionnaires revealed high satisfaction with digital slides. The results also emphasize the importance of the tutors' attitude towards digital microscopy as a factor influencing the students' satisfaction. The constantly growing number of page downloads from the external server confirms this satisfaction and the acceptance of digital slides. Conclusions We are confident, and have showed as well, that digital slides have got numerous advantages over optical slides and are more suitable in education.

  16. A Possible Interpretation of Dark Energy and Matter of the Expanding Universe

    International Nuclear Information System (INIS)

    Lehnert, B.

    2009-01-01

    At present the expanding universe is observed to be dominated by the not fully understood concepts of dark energy and matter, in a conceived almost flat Euclidian geometry. As one of the possible efforts to understand its global behaviour, the present paper attempts to explain these concepts in terms of the pressure force and gravity of a spherical photon gas cloud of zero point energy, in flat geometry. A difficult point concerns the frequency distribution of the zero point energy oscillations which leads to the unacceptable result of an infinite total energy. A modification of this distribution is therefore proposed which results in finite energy density. A corresponding equilibrium is investigated, as well as small dynamic deviations from it, to form a basis for a model of the expanding universe. Provided that the crucial points of the present approach hold true, the model satisfies the requirements of cosmic linear dimensions, results in an estimated acceleration of the expansion being of the order of the observed one, presents a possible solution of the coincidence problem of dark energy and matter, and provides one of the possible explanations of the observed excess of high-energy electrons and positrons in recent balloon and satellite experiments.

  17. Digital assessment in higher education: Promoting universal usability through requirements specification and universal design quality (UD-Q) reviews

    OpenAIRE

    Begnum, Miriam E. Nes; Foss-Pedersen, Rikke Julie

    2017-01-01

    Statistics show there is a clear relationship between higher education and employment in Norway, especially for people with disabilities. The use of digital assessment solutions is increasing in Norwegian higher education. The overall goal of this study is therefore to highlight the potential for improvement of current practices related to universal design, both for providers of digital assessment solutions and for higher education institutions. Based on a case study of practices in Norwegian...

  18. SEPHIROT: Scenario for Universe-Creation AUTOMATICALLY from Digits On-Average Euler-Bernoulli-Kummer-Riemann-Newcomb-Poincare-Weyl-Benford-Kac-Raimi-Hill-Antonoff-Siegel ``Digit-Physics'' Logarithm-Law: ``It's a Jack-in-the-Box Universe'': EMET/TRUTH!!!

    Science.gov (United States)

    Siegel, Edward Carl-Ludwig; Young, Frederic; Wignall, Janis

    2013-04-01

    SEPHIROT: Siegel[http://fqxi.org/community/forum/topic/1553]: Ten-[0->9]-Digits; Average Log-Law SCALE-Invariance; Utter-Simplicity: ``Complexity'' (vs. ``Complicatedness''); Zipf-law/Hyperbolicity/ Inevitability SCENARIO AUTOMATICALLY CREATES & EVOLVES a UNIVERSE: inflation, a big-bang, bosons(E)->Mellin-(c2)-tranform->fermions(m), hidden-dark-energy(HDE), hidden-dark-matter (HDM), cosmic-microwave-background(CMB), supersymmetry(SUSY), PURPOSELY NO: theories,models,mechanisms,processes, parameters,assumptions,WHATSOEVER: It's a ``Jack-in-the-Box'' Universe!!!: ONLY VIA: Newcomb [Am.J.Math.4(1),39(1881)]QUANTUM-discovery!!!-Benford-Siegel-Antonoff[AMS.Joint-Mtg.(02)-Abs.#973-60-124!!!] inversion to ONLY BEQS with d=0 BEC: ``Digit-Physics''!; Log fixed-point invariance(s): [base=units=SCALE] of digits classic (not classical!) average [CAUSING] log statistical-correlations =log(1+1/d), with physics-crucial d=0 BEC singularity/pole, permits SEPHIROT!!!: ``digits are quanta are bosons because bosons are and always were digits!!!'': Digits = Bosons with d=0 BEC(!!!) & expansion to Zipf-law Hyperbolicity INEVITABILITY CMB!

  19. Physics of Rotating and Expanding Black Hole Universe

    Directory of Open Access Journals (Sweden)

    Seshavatharam U. V. S.

    2010-04-01

    Full Text Available Throughout its journey universe follows strong gravity. By unifying general theory of relativity and quantum mechanics a simple derivation is given for rotating black hole’s temperature. It is shown that when the rotation speed approaches light speed temperature approaches Hawking’s black hole temperature. Applying this idea to the cosmic black hole it is noticed that there is “no cosmic temperature” if there is “no cosmic rotation”. Starting from the Planck scale it is assumed that- universe is a rotating and expanding black hole. Another key assumption is that at any time cosmic black hole rotates with light speed. For this cosmic sphere as a whole while in light speed rotation “rate of decrease” in temperature or “rate of increase” in cosmic red shift is a measure of “rate of cosmic expansion”. Since 1992, measured CMBR data indicates that, present CMB is same in all directions equal to 2 : 726 K ; smooth to 1 part in 100,000 and there is no continuous decrease! This directly indicates that, at present rate of decrease in temperature is practically zero and rate of expansion is practically zero. Universe is isotropic and hence static and is rotating as a rigid sphere with light speed. At present galaxies are revolving with speeds proportional to their distances from the cosmic axis of rotation. If present CMBR temperature is 2 : 726 K, present value of obtained angular velocity is 2 : 17 10 Present cosmic mass density and cosmic time are fitted with a ln ( volume ratio parameter. Finally it can be suggested that dark matter and dark energy are ad-hoc and misleading concepts.

  20. Attitudes towards digital gap among university students, and its relationship with educational progress and socioeconomic status

    Directory of Open Access Journals (Sweden)

    Z Derikvandi

    2017-03-01

    Full Text Available Introduction: Digital gap may exist in national scale, among organizations and other groups of society, since it is an indicative of inequality in information technology ground and communication. This study aims to investigate the attitude towards digital gap among students, and its relationship with educational progress and socio-economic  status (SES of university students at Alborz University of Medical Sciences. Methods: This was a cross sectional analytic study. students were randomly selected according to multistage cluster method. The tools for collecting data were Davis (1989 questionnaire on attitude towards internet, and  a researcher made questionnaire. The formal validity of the questionnaires is confirmed by a panel of experts, Cronbach's alpha's coefficient was also calculated. Pearson coefficient were calculated andindependent T- test was used for analyzing the data. Result: The analysis of data indicates that there is a meaningful relationship between the attitude towards digital gap and educational progress, and also SES of the students. Furthermore, there was adifferences between the attitudes of males (48.7 and felames (46.5 toward digital gap (p=0.01. Conclusion:There is an attitude towards digital gap in university students. Interventions are needed to close the digital gaps in studnets.

  1. Ghosts in the Machine: Incarcerated Students and the Digital University

    Science.gov (United States)

    Hopkins, Susan

    2015-01-01

    Providing higher education to offenders in custody has become an increasingly complex business in the age of digital learning. Most Australian prisoners still have no direct access to the internet and relatively unreliable access to information technology. As incarceration is now a business, prisons, like universities, are increasingly subject to…

  2. Physics of Rotating and Expanding Black Hole Universe

    Directory of Open Access Journals (Sweden)

    Seshavatharam U. V. S.

    2010-04-01

    Full Text Available Throughout its journey universe follows strong gravity. By unifying general theory of relativity and quantum mechanics a simple derivation is given for rotating black hole's temperature. It is shown that when the rotation speed approaches light speed temperature approaches Hawking's black hole temperature. Applying this idea to the cosmic black hole it is noticed that there is "no cosmic temperature" if there is "no cosmic rotation". Starting from the Planck scale it is assumed that universe is a rotating and expanding black hole. Another key assumption is that at any time cosmic black hole rotates with light speed. For this cosmic sphere as a whole while in light speed rotation "rate of decrease" in temperature or "rate of increase" in cosmic red shift is a measure of "rate of cosmic expansion". Since 1992, measured CMBR data indicates that, present CMB is same in all directions equal to $2.726^circ$ K, smooth to 1 part in 100,000 and there is no continuous decrease! This directly indicates that, at present rate of decrease in temperature is practically zero and rate of expansion is practically zero. Universe is isotropic and hence static and is rotating as a rigid sphere with light speed. At present galaxies are revolving with speeds proportional to their distances from the cosmic axis of rotation. If present CMBR temperature is $2.726^circ$ K, present value of obtained angular velocity is $2.17 imes 10^{-18}$ rad/sec $cong$ 67 Km/sec$imes$Mpc. Present cosmic mass density and cosmic time are fitted with a $ln (volume ratio$ parameter. Finally it can be suggested that dark matter and dark energy are ad-hoc and misleading concepts.

  3. Developing digital technologies for university mathematics by applying participatory design methods

    DEFF Research Database (Denmark)

    Triantafyllou, Eva; Timcenko, Olga

    2013-01-01

    This paper presents our research efforts to develop digital technologies for undergraduate university mathematics. We employ participatory design methods in order to involve teachers and students in the design of such technologies. The results of the first round of our design are included...

  4. Distant Supernovae Indicate Ever-Expanding Universe

    Science.gov (United States)

    1998-12-01

    ESO Astronomers Contribute towards Resolution of Cosmic Puzzle Since the discovery of the expansion of the Universe by American astronomer Edwin Hubble in the 1920's, by measurement of galaxy velocities, astronomers have tried to learn how this expansion changes with time. Until now, most scientists have been considering two possibilities: the expansion rate is slowing down and will ultimately either come to a halt - whereafter the Universe would start to contract, or it will continue to expand forever. However, new studies by two independent research teams, based on observations of exploding stars ( supernovae ) by ESO astronomers [1] with astronomical telescopes at the La Silla Observatory as well as those of their colleagues at other institutions, appear to show that the expansion of the Universe is accelerating . The results take the discovery of the cosmological expansion one step further and challenge recent models of the Universe. If the new measurements are indeed correct, they show that the elusive "cosmological constant" , as proposed by Albert Einstein , contributes significantly to the evolution of the Universe. The existence of a non-zero cosmological constant implies that a repulsive force, counter-acting gravity, currently dominates the universal expansion , and consequently leads to an ever-expanding Universe. This new research is being named as the "Breakthrough of the Year" by the renowned US science journal Science in the December 18, 1998, issue. A Press Release is published by the journal on this occasion. "Fundamental Parameters" of the Universe Three fundamental parameters govern all cosmological models based on the theory of General Relativity. They are 1. the current expansion rate as described by Hubble's constant , i.e. the proportionality factor between expansion velocity and distance 2. the average matter density in the Universe, and 3. the amount of "other energy" present in space. From the measured values of these fundamental

  5. Student Communication and Study Habits of First-Year University Students in the Digital Era

    Science.gov (United States)

    Gallardo-Echenique, Eliana; Bullen, Mark; Marqués-Molías, Luis

    2016-01-01

    This paper reports on research into the study habits of-university students, their use digital technologies and how they communicate with each other and their professors. We conclude that most students feel comfortable with digital technologies and that they use social media for connecting and interacting with friends rather than for academic…

  6. An Evaluation of the Informedia Digital Video Library System at the Open University.

    Science.gov (United States)

    Kukulska-Hulme, Agnes; Van der Zwan, Robert; DiPaolo, Terry; Evers, Vanessa; Clarke, Sarah

    1999-01-01

    Reports on an Open University evaluation study of the Informedia Digital Video Library System developed at Carnegie Mellon University (CMU). Findings indicate that there is definite potential for using the system, provided that certain modifications can be made. Results also confirm findings of the Informedia team at CMU that the content of video…

  7. Writing Programs as Distributed Networks: A Materialist Approach to University-Community Digital Media Literacy

    Science.gov (United States)

    Comstock, Michelle

    2006-01-01

    This article addresses how community-university digital media literacy projects are redefining literacy, literate practices, and institutions. Using Actor-Network Theory (ANT), which emphasizes the organizing process itself, I analyze the shifting definitions of literacy within one particular university-community collaboration. My analysis…

  8. Expanding the Universe of Education.

    Science.gov (United States)

    Parsons, Elizabeth

    1996-01-01

    Definitions of "education" and "rural" are debunked and expanded. The three major tasks of rural education are educating people to understand their own needs, the unavoidable changes that will transform rural Australia within their lifetimes, and the range of technologies that can enhance their well-being. Presents a strategy…

  9. High-Speed Universal Frequency-to-Digital Converter for Quasi-Digital Sensors and Transducers

    Directory of Open Access Journals (Sweden)

    Sergey Y. Yurish

    2007-06-01

    Full Text Available New fast, accurate universal integrated frequency-to-digital converter (UFDC-1M-16 is described in the article. It is based on the novel patented modified method of the dependent count and has non-redundant conversion time from 6.25 ms to 6.25 ms for 1 to 0.001 % relative errors respectively, comparable with conversion time for successive-approximation and S-D ADC. The IC can work with different sensors, transducers and encoders, which have frequency, period, duty-cycle, PWM, phase shift, pulse number, etc. output.

  10. The ‘universal library’ returns in digital form

    Directory of Open Access Journals (Sweden)

    Andy White

    2009-04-01

    Full Text Available This paper begins with two contemporary technological developments both of which present a serious challenge to the dominance in literature and learning of the book in its codex form. While their earlier manifestations were not commercially successful, the most recent e-book readers (portable technological contraptions that have the capacity to store thousands of books that can be read electronically have been praised not only for their functionality but also for their aesthetic appeal. A related development has been the growth of large-scale digital libraries, the most prominent of which is the Google Books Library Project, launched in 2004 and now committed to the digitisation of around 15 million volumes or 4.5 billion pages in the following six years from some of the world’s leading academic libraries. The purpose of this paper is to explore these developments within the context of ancient and Enlightenment ideas about the ‘universal library’ which assert that the construction of such an institution is the most effective way of promoting universal knowledge. Rather than employing a kind of technological determinism that renders these technologies as merely points along an inexorable continuum of progress, it will be argued that they are the latest manifestation of an idea that long pre-dated digital technology. Over two millennia ago, the Ptolemies attempted to collect the entire corpus of literature in the Greek language as well as significant works in other languages. Many have argued that the institution that held these huge collections, the library at Alexandria, was effectively the world’s first universal library. Even though this library was eventually destroyed, the idea of universalism survived and flourished again during the European Enlightenment, through Diderot’s Encyclopédie project and the construction of national libraries and archives. Latterly, the creation of the World Wide Web is conceived of by some as the

  11. Professional Development in the International Year of Astronomy: Expanding the Universe in the Classroom

    Science.gov (United States)

    Reinfeld, Erika L.; Harman, P.; Lee, M. H.; Bailey, J. M.

    2008-05-01

    The International Year of Astronomy offers unparalleled opportunity to expand our audiences’ understanding about the universe. However, many learners, students and adults alike, are unfamiliar with the universe beyond the solar system. This collaborative workshop explores strategies for teacher professional development around the origin and evolution of the universe, using the resources of the Beyond the Solar System Professional Development Project as a guide. The Beyond the Solar System (BtSS) Professional Development Project is a NASA-supported initiative from the Harvard-Smithsonian Center for Astrophysics (CfA) designed to foster public understanding of NASA's exciting astronomy and space science research. The BtSS portfolio includes video resources, assessment tools, data about common student ideas, content presentations, online telescope investigations, and other classroom activities designed to deepen content knowledge and improve the quality of teaching and learning about current scientific models and evidence for the origin and evolution of our universe of galaxies. During this session, members of the BtSS Leadership Team from around the country will share their experience using these resources in educator workshops and teacher-training courses, and facilitate discussions among workshop participants about how these materials and pedagogical strategies can be used in their own professional development efforts during the International Year of Astronomy. EPO specialists and scientists will engage in focused exploration of the project's DVD--"Expanding the Universe in the Classroom"--in order make explicit connections between the themes of the International Year of Astronomy and their own work. The goals of this workshop are to equip professional development providers to support IYA education efforts in classrooms, afterschool programs, and informal education venues and to raise awareness about the opportunities for continuing Galileo's legacy of discovery

  12. Differences in basic digital competences between male and female university students of Social Sciences in Spain

    Directory of Open Access Journals (Sweden)

    Esteban Vázquez-Cano

    2017-11-01

    Full Text Available Abstract This article analyses the differences in basic digital competences of male and female university students on Social Education, Social Work and Pedagogy courses. The study of gender differences in university students’ acquisition of digital competence has considerable didactic and strategic consequences for the development of these skills. The study was carried out at two public universities in Spain (UNED – the National Distance-Learning University, and the Universidad Pablo de Olavide on a sample of 923 students, who responded to a questionnaire entitled “University Students’ Basic Digital Competences 2.0” (COBADI – registered at the Spanish Patent and Trademark Office. The research applied a quantitative methodology based on a Bayesian approach using multinomial joint distribution as prior distribution. The use of Bayes factors also offers advantages with respect to the use of frequentist p-values, like the generation of information on the alternative hypothesis, that the evidence is not dependent on the sample size used. The results show that men have greater perceived competence in digital cartography and online presentations, whereas women prefer to request personal tutorials to resolve doubts about technology and have greater perceived competence in corporate emailing. There is also evidence that the men have greater perceived competence in developing “online presentations” than women do. Regarding to, “Interpersonal competences in the use of ICT at university”, we observed that the female students opted for personal sessions with tutors in greater numbers than the male students did.

  13. Digital Audiobooks

    DEFF Research Database (Denmark)

    Have, Iben; Pedersen, Birgitte Stougaard

    Audiobooks are rapidly gaining popularity with widely accessible digital downloading and streaming services. The paper is framing how the digital audiobook expands and changes the target groups for book publications and how it as an everyday activity is creating new reading experiences, places...

  14. LATTICEEASY A Program for Lattice Simulations of Scalar Fields in an Expanding Universe

    CERN Document Server

    Felder, G; Tkachev, Igor; Felder, Gary

    2008-01-01

    We describe a C++ program that we have written and made available for calculating the evolution of interacting scalar fields in an expanding universe. The program is particularly useful for the study of reheating and thermalization after inflation. The program and its full documentation are available on the Web at http://physics.stanford.edu/gfelder/latticeeasy. In this paper we provide a brief overview of what the program does and what it is useful for.

  15. Exploring the Digital Universe with Europe's Astrophysical Virtual Observatory

    Science.gov (United States)

    2001-12-01

    N° 73-2001 - Paris, 5 December 2001 The aim of AVO is to give astronomers instant access to the vast databanks now being built up by the world's observatories and forming what is in effect a "digital sky". Using AVO astronomers will be able, for example, to retrieve the elusive traces of the passage of an asteroid as it passes the Earth and so predict its future path and perhaps warn of a possible impact. When a giant star comes to the end of its life in a cataclysmic explosion called a supernova, they will be able to access the digital sky and pinpoint the star shortly before it exploded, adding invaluable data to the study of the evolution of stars. Modern observatories observe the sky continuously and data accumulates remorselessly in the digital archives. The growth rate is impressive and many hundreds of terabytes of data -corresponding to many thousands of billions of pixels - are already available to scientists. The real sky is being digitally reconstructed in the databanks. The volume and complexity of data and information available to astronomers are overwhelming. Hence the problem of how astronomers can possibly manage, distribute and analyse this great wealth of data. The Astrophysical Virtual Observatory will enable them to meet the challenge and "put the Universe online". AVO is a three-year project, funded by the European Commission under its Research and Technological Development (RTD) scheme, to design and implement a virtual observatory for the European astronomical community. The Commission has awarded a contract valued at EUR 4m for the project, starting on 15 November. AVO will provide software tools to enable astronomers to access the multi-wavelength data archives over the Internet and so give them the capability to resolve fundamental questions about the Universe by probing the digital sky. Equivalent searches of the "real" sky would, in comparison, both be prohibitively costly and take far too long. Towards a Global Virtual Observatory The

  16. DIGITAL BROADCASTING and INTERACTIVE TELEVISION in DISTANCE EDUCATION: Digital And Interactive Television Infrastructure Proposol for Anadolu University Open Education Faculty

    Directory of Open Access Journals (Sweden)

    Reha Recep ERGUL

    2007-01-01

    Full Text Available Rapid changes and improvements in the communication and information technologies beginning from the midst of the 20th Century and continuing today require new methods, constructions, and arrangements in the production and distribution of information. While television having the ability of presenting complex or difficult to comprehend concepts, subjects, and experimental studies to learners from different points of view, supported by 2D or 3D graphics and animations with audio visual stimulators replaces its technology from analog to digital and towards digital-interactive, it has also begun to convert the broadcasting technology in Turkey in this direction. Therefore, television broadcast infrastructure of Anadolu University Open Education Faculty needs to be replaced with a digital and interactive one. This study contains basic concepts of digital and interactive broadcasting and the new improvements. Furthermore, it includes the approaches in the basis of why and how a digital television broadcasting infrastructure should be stablished.

  17. A Closed Universe Expanding Forever

    Directory of Open Access Journals (Sweden)

    Silva N. P.

    2014-07-01

    Full Text Available In a recent paper, the expression a ( t = e H 0 T 0 [ ( t T 0 where = 0 : 5804, was proposed for the expansion factor of our Universe. According to it, gravity dominates the expan- sion ( matter era until the age of T ⋆ = 3 : 214 Gyr and, after that, dark energy dominates ( dark energy era leading to an eternal expansion, no matter if the Universe is closed, flat or open. In this paper we consider only the closed version and show that there is an upper limit for the size of the radial comoving coordinate, beyond which nothing is observed by our fundamental observer, on Earth. Our observable Universe may be only a tiny portion of a much bigger Universe most of it unobservable to us. This leads to the idea that an endless number of other fundamental observers may live on equal number of Universes similar to ours. Either we talk about many Universes — Multiverse — or about an unique Universe, only part of it observable to us.

  18. DIGITAL TRANSFORMATION OF UNIVERSITY EDUCATION IN UKRAINE: TRAJECTORIES OF DEVELOPMENT IN THE CONDITIONS OF NEW TECHNOLOGICAL AND ECONOMIC ORDER

    OpenAIRE

    Oleg Ye. Kaminskyi; Yulia O. Yereshko; Sergii O. Kyrychenko

    2018-01-01

    The article substantiates the role of the digital transformation of higher education in Ukraine in the era of the fourth industrial revolution. There was proven the need to develop the strategy of the university education digital transformation, as well as the formation of new information and communication competencies. According to the authors, the strategy of digital transformation of the university education system has to include the modernization of corporate IT architecture management, w...

  19. 3D Adaptive Virtual Exhibit for the University of Denver Digital Collections

    Directory of Open Access Journals (Sweden)

    Shea-Tinn Yeh

    2015-07-01

    Full Text Available While the gaming industry has taken the world by storm with its three-dimensional (3D user interfaces, current digital collection exhibits presented by museums, historical societies, and libraries are still limited to a two-dimensional (2D interface display. Why can’t digital collections take advantage of this 3D interface advancement? The prototype discussed in this paper presents to the visitor a 3D virtual exhibit containing a set of digital objects from the University of Denver Libraries’ digital image collections, giving visitors an immersive experience when viewing the collections. In particular, the interface is adaptive to the visitor’s browsing behaviors and alters the selection and display of the objects throughout the exhibit to encourage serendipitous discovery. Social media features were also integrated to allow visitors to share items of interest and to create a sense of virtual community.

  20. On propagation of electromagnetic and gravitational waves in the expanding Universe

    International Nuclear Information System (INIS)

    Gladyshev, V O

    2016-01-01

    The purpose of this study was to obtain an equation for the propagation time of electromagnetic and gravitational waves in the expanding Universe. The velocity of electromagnetic waves propagation depends on the velocity of the interstellar medium in the observer's frame of reference. Gravitational radiation interacts weakly with the substance, so electromagnetic and gravitational waves propagate from a remote astrophysical object to the terrestrial observer at different time. Gravitational waves registration enables the inverse problem solution - by the difference in arrival time of electromagnetic and gravitational-wave signal, we can determine the characteristics of the emitting area of the astrophysical object. (paper)

  1. Digital Entrepreneurships and Business Models Canvas: Applied Research for Communication University Students

    Directory of Open Access Journals (Sweden)

    Jorge Montalvo-Castro

    2016-07-01

    Full Text Available Digital economy requires other business models different to the ones present in the physical world; therefore, they should be studied from a particular perspective. In this research a variety of canvas formats or business model canvas are compared and analyzed. The entrepreneurial intention of Communication students from the University of Lima is also studied. The methodology included a survey among students and an educational experience within the subject: Advertising Creativity. The main result of this research is a proposal canvas to design digital entrepreneurships in Communication, whether commercial or social businesses.

  2. Digital Labour in the University: Understanding the Transformations of Academic Work in the UK

    Directory of Open Access Journals (Sweden)

    Jamie Woodcock

    2018-01-01

    Full Text Available Universities have been the site of a variety of shifts and transformations in the previous few decades. Both the composition of students and academics are changing (to a lesser or greater extent, along with the ways in which teaching and research is supported, conducted, and delivered. The effects of neoliberalism, privatisation, precarious employment, debt, and digitalisation have been highlighted as important factors in understanding these changes. However, the ways in which these tendencies are expressed in universities – both in specific and general ways – remain fragmented and under-analysed. In particular, the role of academic labour processes, increasingly mediated through digital technology, remains in the background. There is a risk of viewing these transformations as abstracted, far removed from the day-to-day activities of academic labour on which universities rely. This article will therefore focus on connecting the broader changes in funding, organisation, and digital technology to the labour processes of academics. Rather than seeking a return to a romanticised pre-neoliberal university, this article explores the possibilities of resistance and alternatives to the university as it is now.

  3. Exploring the Use of Interactive Digital Storytelling Video: Promoting Student Engagement and Learning in a University Hybrid Course

    Science.gov (United States)

    Shelton, Catharyn C.; Warren, Annie E.; Archambault, Leanna M.

    2016-01-01

    This study explores interactive digital storytelling in a university hybrid course. Digital stories leverage imagery and narrative-based content to explore concepts, while appealing to millennials. When digital storytelling is used as the main source of course content, tensions arise regarding how to engage and support student learning while…

  4. Expanding Advanced Civilizations in the Universe

    Science.gov (United States)

    Gros, C.

    The 1950 lunch-table remark by Enrico Fermi `Where is everybody' has started intensive scientific and philosophical discussions about what we call nowadays the `Fermi paradox': If there had been ever a single advanced civilization in the cosmological history of our galaxy, dedicated to expansion, it would have had plenty of time to colonize the entire galaxy via exponential growth. No evidence of present or past alien visits to earth are known to us, leading to the standard conclusion that no advanced expanding civilization has ever existed in the milky-way. This conclusion rest fundamentally on the ad-hoc assumption, that any alien civilizations dedicated to expansion at one time would remain dedicated to expansions forever. Considering our limited knowledge about alien civilizations we need however to relax this basic assumption. Here we show that a substantial and stable population of expanding advanced civilization might consequently exist in our galaxy.

  5. The Universe of Digital Sky Surveys : Meeting to Honour the 70th Birthday of Massimo Capaccioli

    CERN Document Server

    Longo, Giuseppe; Marconi, Marcella; Paolillo, Maurizio; Iodice, Enrichetta

    2016-01-01

    These are the proceedings of a meeting in honour of Massimo Capaccioli at the occasion of his 70th birthday. The conference aimed at summarizing the results from the main current and past digital sky survey projects and at discussing how these can be used to inspire ongoing projects and better plan the future ones. Over the last decades, digital sky surveys performed with dedicated telescopes and finely-tuned wide-field cameras, have revolutionized astronomy. They have become the main tool to investigate the nearby and far away universe, thus providing new insights in the understanding of the galaxy structure and assembly across time, the dark components of the universe, as well as the history of our own galaxy. They have also opened the time domain leading to a new understanding of the transient phenomena in the universe. By providing public access to top quality data, digital surveys have also changed the everyday practice of astronomers who have become less dependent on direct access to large observing ...

  6. Carnegie Mellon University bioimaging day 2014: Challenges and opportunities in digital pathology.

    Science.gov (United States)

    Rohde, Gustavo K; Ozolek, John A; Parwani, Anil V; Pantanowitz, Liron

    2014-01-01

    Recent advances in digital imaging is impacting the practice of pathology. One of the key enabling technologies that is leading the way towards this transformation is the use of whole slide imaging (WSI) which allows glass slides to be converted into large image files that can be shared, stored, and analyzed rapidly. Many applications around this novel technology have evolved in the last decade including education, research and clinical applications. This publication highlights a collection of abstracts, each corresponding to a talk given at Carnegie Mellon University's (CMU) Bioimaging Day 2014 co-sponsored by the Biomedical Engineering and Lane Center for Computational Biology Departments at CMU. Topics related specifically to digital pathology are presented in this collection of abstracts. These include topics related to digital workflow implementation, imaging and artifacts, storage demands, and automated image analysis algorithms.

  7. Digitizing Villanova University's Eclipsing Binary Card Catalogue

    Science.gov (United States)

    Guzman, Giannina; Dalton, Briana; Conroy, Kyle; Prsa, Andrej

    2018-01-01

    Villanova University’s Department of Astrophysics and Planetary Science has years of hand-written archival data on Eclipsing Binaries at its disposal. This card catalog began at Princeton in the 1930’s with notable contributions from scientists such as Henry Norris Russel. During World War II, the archive was moved to the University of Pennsylvania, which was one of the world centers for Eclipsing Binary research, consequently, the contributions to the catalog during this time were immense. It was then moved to University of Florida at Gainesville before being accepted by Villanova in the 1990’s. The catalog has been kept in storage since then. The objective of this project is to digitize this archive and create a fully functional online catalog that contains the information available on the cards, along with the scan of the actual cards. Our group has built a database using a python-powered infrastructure to contain the collected data. The team also built a prototype web-based searchable interface as a front-end to the catalog. Following the data-entry process, information like the Right Ascension and Declination will be run against SIMBAD and any differences between values will be noted as part of the catalog. Information published online from the card catalog and even discrepancies in information for a star, could be a catalyst for new studies on these Eclipsing Binaries. Once completed, the database-driven interface will be made available to astronomers worldwide. The group will also acquire, from the database, a list of referenced articles that have yet to be found online in order to further pursue their digitization. This list will be comprised of references in the cards that were neither found on ADS nor online during the data-entry process. Pursuing the integration of these references to online queries such as ADS will be an ongoing process that will contribute and further facilitate studies on Eclipsing Binaries.

  8. READING HABITS IN DIGITAL ERA: A RESEARCH ON THE STUDENTS IN BORNEO UNIVERSITY

    Directory of Open Access Journals (Sweden)

    Firima Zona Tanjung

    2017-10-01

    Full Text Available This research aims to explore the current reading habits of university students. Moreover, it aims to determine the effects of widespread use of the internet and other digital resources in reading habits and to give some possible recommendation to improve students’ reading habits in the digital era. The research design was descriptive survey research. The instrument of the research was questionnaire, which is based on Akarsu and Dariyemez (2014 and Chauhan and Lal (2012. The participants of the research were 320 students studying in six majors in Faculty of Teachers Training and Education at Borneo University. They were selected through the cluster random sampling. The questionnaire involved six categories, namely demographic information, frequency of items read, contents of online reading, online activities, content first clicked when online, and techniques to develop reading habits. All research data was analyzed using SPSS Statistics 22 program.

  9. Evaluation and development of digital competence in future primary school teachers at the University of Murcia

    Directory of Open Access Journals (Sweden)

    Isabel Gutiérrez Porlán

    2016-01-01

    Full Text Available This paper presents the findings of a study carried out in the academic year 2014-2015 at the faculty of Education of the University of Murcia with first year degree students in Primary Education studying Research and ICT. The study started with the application of the DIGCOM questionnaire to analyze the digital competences of 134 students. The questionnaire served as an initial task to help students reflect on their digital competences. The subject was developed around tasks which adopted a transversal approach and used the nature of the contents itself to direct and improve students’ digital competencies. Finally, the initial questionnaire was reformulated and run in order to ascertain the students’ self-perception of their improvement in these competencies through the tasks they had performed. Below we present the tasks carried out, the organization of each subject and the most relevant data regarding the self-perception of digital competencies of the future primary school teachers enrolled at the University of Murcia. The data reveal, on the one hand, that the students participating consider themselves to be competent in the most basic aspects of digital competencies and, on the other, their perception that the work done in the subject has helped them quite a lot in improving their competencies.

  10. THE ROLE OF DIGITAL MARKETING IN UNIVERSITY SPORT: AN OVERVIEW STUDY OF HIGHER EDUCATION INSTITUTION IN CROATIA

    Directory of Open Access Journals (Sweden)

    Antun Biloš

    2016-12-01

    Full Text Available The importance of student sport activities within the structure of academic development is arguably significant. However, university sport is one of the elements of academic development that is not represented adequately as a research subject on a global scale in both scientific and professional environments alike. Along with the global growth of university level education based on the rise of student mobility across countries and continents, and the strong global ICT development, a new perspective on university sport can be observed and several implications analyzed. The focus of this paper is set on the communication capabilities of the internet as a digital medium that can be used as a means of fostering student sport and related activities while taking into account the characteristics and behavioral components of the student population. The primary research was conducted on a sample of students of Josip Juraj Strossmayer University of Osijek. The research provided several interesting implications on student behavior regarding the general information collection and consumption, as well as information about student sport activities on the university level. The paper provides a brief sport marketing literature review and suggests several important guidelines for further research. The assumption that the internet is a key element in the marketing potential of student sport was confirmed. Comparative analysis of digital marketing activities of benchmark universities has been conducted in order to determine suggestions on creating and/or improving digital marketing tools such as web site, social network presence and mobile application for reaching marketing potential of university sport.

  11. The convergence of the aspects of digital inclusion: experience in the domain of a university

    Directory of Open Access Journals (Sweden)

    Barbara Coelho Neves

    2008-01-01

    Full Text Available This article brings results of a case study applied with survey, seeking to analyze the aspects of the digital inclusion through the users of Tabuleiro Digital public Internet access point of the College of Education of the Federal University of Bahia - FACED/ UFBA. The main objective study was intended to investigate the type of digital inclusion, promoted by this Project, in accordance with perspective of the literature present. The specific objectives indicate the characteristics of the profile from the users; types of applications used and purpose of the Internet confrontation with levels of education and social. In this way, the information society and digital inclusion are contextualized; also the aspects of the inclusion of the Tabuleiro are demonstrated and discussed. Finally, with the analysis, was evidenced that the type of digital inclusion of the Project is induced (technique.

  12. Using Technology to Expand the Classroom in Time, Space, and Diversity.

    Science.gov (United States)

    Drew, Joshua

    2015-11-01

    Diverse classrooms offer distinct advantages over homogeneous classrooms, for example by providing a greater diversity of perspectives and opportunities. However, there is substantial underrepresentation of numerous groups throughout science, technology, engineering, and mathematics (STEM) education, from secondary schools through professional ranks and academia. In this piece I offer a critical analysis of three worked examples of how technology can be used to expand traditional definitions of the classroom environment. In doing so I show how technology can be used to help make STEM classrooms more expansive, equitable, and effective learning environments. First I highlight how peer-to-peer learning was used to foster knowledge of marine conservation with high school youth across Fiji and Chicago. Second I show how social media can be used to facilitate conversations in New York City after a natural disaster. Finally, I show how integrating digital and real-world learning can help a diverse group of students from the Pacific islands gain field-based STEM techniques in an extended workshop format. Taken together these examples show how digital technology could expand the fixed walls of the academy and that technology can help show students the vivid splendor of life outside the classroom. © The Author 2015. Published by Oxford University Press on behalf of the Society for Integrative and Comparative Biology. All rights reserved. For permissions please email: journals.permissions@oup.com.

  13. Evaluasi Tingkat Kesiapan Organisasi dalam Rangka Preservasi Digital (Studi Kasus Pada Unit Repositori Flinders Academic Commons Of Flinders University Library (FACFUL, Adelaide, Australia Selatan

    Directory of Open Access Journals (Sweden)

    Rattahpinnusa Haresariu Handisa

    2017-12-01

    Full Text Available Penelitian ini bertujuan mengidentifikasi tingkat kesiapan lembaga repositori dalam rangka preservasi digital pada Flinders Academic Commons Flinders University Library (FACFUL dan mengidentifikasi faktor-faktor yang berpengaruh terhadap tingkat kesiapan organisasi. Terdapat tiga aspek yang diteliti meliputi: kesiapan infrastruktur, kesiapan teknologi serta sumber daya yang dibutuhkan bagi preservasi digital. Penelitian ini menggunakan metode studi kasus dengan  intesity sampel. Adapun instrumen pengumpulan data menggunakan Cornell University Survey of Institutional Readiness Checklist. Selanjutnya, tehnik pengambilan data menggunakan tehnik wawancara dengan Ms. Liz-Walkley Hall selaku pustakawati yang bertanggung jawab terhadap unit repositori digital FACFUL. Adapun informasi penunjang diperoleh melalui studi kepustakaan merujuk pada website Perpustakaan Universitas  Flinders. Data yang terkumpul dianalisis secara deskriptif menggunakan indikator kesiapan organisasi Cornel University Model. Hasil penelitian menunjukkan bahwa unit repositori pada FACFUL kurang siap dalam menjalankan preservasi digital. Tingkat kesiapan organisasi Perpustakaan Universitas  Flinders dalam pelestarian digital berapa pada level terbawah yakni Acknowledgement . Pada tingkat tersebut, Perpustakaan Flinders masih dalam tahap pengembangan kesadaran tentang pentingnya preservasi digital. Selanjutnya, faktor-faktor yang mempengaruhi rendahnya tingkat kesiapan organisasi tersebut adalah tidak adanya pernyataan pentingya preservasi digital pada kebijakan pengembangan koleksi; keterbatasan pendanaan dan keterbatasan sumber daya manusia yang kompeten dalam preservasi digital. Penelitian ini merekomendasikan Perpustakaan Universitas Flinders untuk  melakukan uji kelayakan bagi preservasi digital. Salah satu model bisnis yang sesuai dengan kondisi Perpustakaan Universitas  Flinders adalah Meta Archive Model (MAM. Model tersebut berbasis komunitas bagi preservasi digital

  14. DIGITAL TRANSFORMATION OF UNIVERSITY EDUCATION IN UKRAINE: TRAJECTORIES OF DEVELOPMENT IN THE CONDITIONS OF NEW TECHNOLOGICAL AND ECONOMIC ORDER

    Directory of Open Access Journals (Sweden)

    Oleg Ye. Kaminskyi

    2018-04-01

    Full Text Available The article substantiates the role of the digital transformation of higher education in Ukraine in the era of the fourth industrial revolution. There was proven the need to develop the strategy of the university education digital transformation, as well as the formation of new information and communication competencies. According to the authors, the strategy of digital transformation of the university education system has to include the modernization of corporate IT architecture management, which should be implemented as a cloud-based platform. The authors analysed the main possible directions of the educational services transformation and the accompanying business processes. The use of blockchain technology for the educational content management module construction is proposed. The integration of the educational content management modules of different Ukrainian universities should become the basis for creating a global cloud-based platform for higher education.

  15. Digital Divide in Sub-Saharan African Universities: Recommendations and Monitoring

    Energy Technology Data Exchange (ETDEWEB)

    Barry, Boubakar; /Assoc. Afr. Univ.; Chukwuma, Victor; /Olabisi Onabanjo U.; Petitdidier, Monique; /CEPT, Velizy; Cottrell, Les; /SLAC; Bartons, Charles; /Australian Natl. U., RSES

    2009-12-17

    The Digital Divide prevents Africa from taking advantages of new information technologies. One of the most urgent priorities is to bring the Internet in African Universities, Research, and Learning Centers to the level of other regions of the world. eGY-Africa, and the Sharing Knowledge Foundation are two bottom-up initiatives by scientists to secure better cyber-infrastructure and Internet facilities in Africa. Recommendations by the present scientific communities are being formulated at national, regional and international levels. The Internet capabilities are well documented at country level overall, but this is not the case at the University level. The snapshot of the Internet status in universities in 17 African countries, obtained by a questionnaire survey, is consistent with measures of Internet penetration in the corresponding country. The monitoring of Internet performance has been proposed to those African universities to provide an information base for arguing the need to improve the coverage for Africa. A pilot program is recommended that will start scientific collaboration with Europe in western Africa using ICT. The program will lay the foundations for the arrival of new technologies like Grids.

  16. Hybrid Scenarios, Transmedia Storytelling, Expanded Ethnography

    Directory of Open Access Journals (Sweden)

    Daniel Domínguez Figaredo

    2012-10-01

    Full Text Available The transformation of social scenarios due to the impact of digital technologies, introduces new possibilities for ethnographic research. Once the initial approaches focused on the dichotomy of “physical-virtual spaces” have been overcame, it comes a stage of maturity that allows the ethnographers to open new avenues for conceptual and analytical methodology applied in techno-social scenarios. This article discusses the evolution of some key dimensions of ethnography according to the new social and epistemological framework. The discussion is based on the analysis of expanded practices that take place in the new techno-social spaces, defined as hybrid environments, where technologies are embedded in the physical life of the subjects. On the one hand, we consider the production of actions based on the assembly of ideas, meanings and objects through digital mediation devices. It is also analysed the transmedia component of the narratives that make sense to allow the experiments. Underlying the analysis, some elements are introduced for discussion on the scope of expanded ethnographic research, the influence of transmedia phenomenon in the notion of “field” and the methods for determining the significance through digital storytelling.

  17. Expanding Universe: slowdown or speedup?

    International Nuclear Information System (INIS)

    Bolotin, Yuriy L; Erokhin, Danylo A; Lemets, Oleg A

    2012-01-01

    The kinematics and the dynamical interpretation of cosmological expansion are reviewed in a widely accessible manner with emphasis on the acceleration aspect. Virtually all the approaches that can in principle account for the accelerated expansion of the Universe are reviewed, including dark energy as an item in the energy budget of the Universe, modified Einstein equations, and, on a fundamentally new level, the use of the holographic principle. (physics of our days)

  18. Digital Literacy Skills Among Librarians In University Libraries In The 21st Century In Edo And Delta States Nigeria

    Directory of Open Access Journals (Sweden)

    Emiri

    2015-08-01

    Full Text Available Abstract Libraries all over the world have been faced with the evolving technological advancement globalization and digitization of information. These have led to library automation digital and virtual libraries. This paper discussed the contemporary digital literacy skills DLS among librarians in university libraries the 21st century in Edo and Delta States of Southern Nigeria. The study was guided by six objectives and research questions and one hypothesis. The design of the study is descriptive survey and the population consists of all librarians from university libraries in the aforementioned states in Nigeria. The instrument used to generate data is the questionnaire and the date generated was analyzed using simple percentages and frequency count for research questions and SPSS version 14.0. The findings show that electronic mailing social networking use of PDAs mobile phones and internet surfing are the major DLS amongst librarians. It was also discovered that librarians acquired DLS through colleagues assistance trial and error IT programmes and formal education while librarians level of use of DLS is low amongst other findings. Researcher recommends that management of university libraries should provide training for librarians so as to help update their knowledge in application of digital skills and digital skill competence should be giving more attention during recruitment of librarians amongst others.

  19. Digital Natives Revisited: Developing Digital Wisdom in the Modern University

    Science.gov (United States)

    Harris, David

    2012-01-01

    The seminal work of Prensky on "digital natives" and "digital wisdom" is used to launch a broader discussion on the relations between electronic communication, higher education, and popular and elite culture. Prensky's critics commonly contrast his polarisations and generational divisions with a more complex picture of types of engagement with…

  20. Expanding the HAWC Observatory

    Energy Technology Data Exchange (ETDEWEB)

    Mori, Johanna [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-08-17

    The High Altitude Water Cherenkov Gamma-Ray Observatory is expanding its current array of 300 water tanks to include 350 outrigger tanks to increase sensitivity to gamma rays above 10 TeV. This involves creating and testing hardware with which to build the new tanks, including photomultiplier tubes, high voltage supply units, and flash analog to digital converters. My responsibilities this summer included preparing, testing and calibrating that equipment.

  1. On the Exact Solution Explaining the Accelerate Expanding Universe According to General Relativity

    Directory of Open Access Journals (Sweden)

    Rabounski D.

    2012-04-01

    Full Text Available A new method of calculation is applied to the frequency of a photon according to the tra- velled distance. It consists in solving the scalar geodesic equation (equation of energy of the photon, and manifests gravitation, non-holonomity, and deformation of space as the intrinsic geometric factors affecting the photon’s frequency. The solution obtained in the expanding space of Friedmann’s metric manifests the exponential cosmological redshift: its magnitude increases, exponentially, with distance. This explains the acce- lerate expansion of the Universe registered recently by the astronomers. According to the obtained solution, the redshift reaches the ultimately high value z = e π − 1 = 22 . 14 at the event horizon.

  2. Crime and Justice in Digital Society: Towards a ‘Digital Criminology’?

    Directory of Open Access Journals (Sweden)

    Greg Stratton

    2017-05-01

    Full Text Available The opportunities afforded through digital and communications technologies, in particular social media, have inspired a diverse range of interdisciplinary perspectives exploring how such advancements influence the way we live. Rather than positioning technology as existing in a separate space to society more broadly, the ‘digital society’ is a concept that recognises such technologies as an embedded part of the larger social entity and acknowledges the incorporation of digital technologies, media, and networks in our everyday lives (Lupton 2014, including in crime perpetration, victimisation and justice. In this article, we explore potential for an interdisciplinary concept of digital society to expand and inspire innovative crime and justice scholarship within an emerging field of ‘digital criminology’.

  3. The Expanding Digital Media Landscape of Qualitative and Decolonizing Research: Examining Collaborative Podcasting as a Research Method

    Directory of Open Access Journals (Sweden)

    Lindsay Day

    2017-12-01

    Full Text Available Technology of the twenty-first century has transformed our ability to create, modify, store, and share digital media and, in so doing, has presented new possibilities for how social science research can be conducted and mobilized. This paper introduces the use of collaborative podcasting as a research method of critical inquiry and knowledge mobilization. Using a case study, we describe the methodological process that our transdisciplinary team engaged in to create the Water Dialogues podcast, a collaborative initiative stemming from a larger research project examining approaches to implementing Indigenous and Western knowledge in water research and management. We situate collaborative podcasting within an expanding field of collaborative and participatory media practice in social research, and consider how the method may align with and support research within a decolonizing agenda.

  4. University digital libraries in Spain and TIC as paradigms of the information needs for teachers and students

    Directory of Open Access Journals (Sweden)

    Carlos Oliva Marañón

    2012-11-01

    Full Text Available The university digital libraries have experienced an improvement in recent years, allowing easy retrieval of information in different media. The objectives of this research are to verify the suitability of online catalogs to meet the information needs of teachers and students in the area of Library and Information by evaluating a sample of 23 University digital libraries, and raise the necessary improvements. The results verify the suitability of online catalogs to solve the information needs of teachers, researchers and students, being the University libraries of Barcelona, Granada and Sevilla the most relevant in the area of documentation, as well as the professionalism of librarians to heed the needs of users. Among other improvements, raised teacher education and students in using electronic resources and the creation of online help to improve user interfaces-Web in order to retrieve information quickly and efficiently.

  5. Digital Literacy Skills Among Librarians In University Libraries In The 21st Century In Edo And Delta States Nigeria

    OpenAIRE

    Emiri; Ogochukwu T.

    2015-01-01

    Abstract Libraries all over the world have been faced with the evolving technological advancement globalization and digitization of information. These have led to library automation digital and virtual libraries. This paper discussed the contemporary digital literacy skills DLS among librarians in university libraries the 21st century in Edo and Delta States of Southern Nigeria. The study was guided by six objectives and research questions and one hypothesis. The design of the study is descri...

  6. Universal Michelson Gires-Tournois interferometer optical interleaver based on digital signal processing.

    Science.gov (United States)

    Zhang, Juan; Yang, Xiaowei

    2010-03-01

    Optical interleavers based on Michelson Gires-Tournois interferometer (MGTI) with arbitrary cascaded reflectors for symmetrical or asymmetrical periodic frequency response with arbitrary duty cycles are defined as universal MGTI optical interleaver (UMGTIOI). It can significantly enhance flexibility and applicability of optical networks. A novel and simple method based on digital signal processing is proposed for the design of UMGTIOI. Different kinds of design examples are given to confirm effectiveness of the method.

  7. Entropy in an expanding universe

    International Nuclear Information System (INIS)

    Frautschi, S.C.

    1986-01-01

    The present picture of the evolution of the universe, based on the Big Bang, suggests a remarkably different and more interesting situation. In the beginning there is a hot gas, nearly homogeneous and in thermal equilibrium [the 3 0 blackbody radiation, reaching us isotropically from all directions, is a relic of, and evidence for, this early state]. The picture of cosmic evolution, seemingly paradoxical in the light of the law of thermodynamics, motivates the questions the author considers in this paper: How can disequilibrium, order, and in particular the free energy supplies which enable life to maintain its organization, emerge from an apparently chaotic early universe in thermal and chemical equilibrium; will free energy supplies continue to become available and be utilized in the future, or will some sort of heat death eventually settle in? The evolution of free energy and entropy in the universe could not be treated accurately on the basis of physics known in the 19th century. However, various 20th century discoveries and ideas make informed discussion of such issues possible, even though definitive answers are not yet in hand. The author discusses some of the ideas which are quite recent, and are currently undergoing rapid development

  8. Expanding CTE Opportunities through Blended Learning

    Science.gov (United States)

    McKinstry, Elizabeth

    2012-01-01

    The global economy, 21st century skills, knowledge society, college and career readiness, digital and project-based learning are all common terms to educators who are expanding their learning environments beyond the classroom to meet the needs of all students. It is common knowledge that the rapid technological advances of this century have…

  9. Semiclassical expanding discrete space-times

    International Nuclear Information System (INIS)

    Cobb, W.K.; Smalley, L.L.

    1981-01-01

    Given the close ties between general relativity and geometry one might reasonably expect that quantum effects associated with gravitation might also be tied to the geometry of space-time, namely, to some sort of discreteness in space-time itself. In particular it is supposed that space-time consists of a discrete lattice of points rather than the usual continuum. Since astronomical evidence seems to suggest that the universe is expanding, the lattice must also expand. Some of the implications of such a model are that the proton should presently be stable, and the universe should be closed although the mechanism for closure is quantum mechanical. (author)

  10. Thermodynamics of an accelerated expanding universe

    International Nuclear Information System (INIS)

    Wang Bin; Gong Yungui; Abdalla, Elcio

    2006-01-01

    We investigate the laws of thermodynamics in an accelerating universe driven by dark energy with a time-dependent equation of state. In the case we consider that the physically relevant part of the Universe is that enveloped by the dynamical apparent horizon, we have shown that both the first law and second law of thermodynamics are satisfied. On the other hand, if the boundary of the Universe is considered to be the cosmological event horizon the thermodynamical description based on the definitions of boundary entropy and temperature breaks down. No parameter redefinition can rescue the thermodynamics laws from such a fate, rendering the cosmological event horizon unphysical from the point of view of the laws of thermodynamics

  11. Understanding University Students' Thoughts and Practices about Digital Citizenship: A Mixed Methods Study

    Science.gov (United States)

    Kara, Nuri

    2018-01-01

    The purpose of this study was to investigate university students' thoughts and practices concerning digital citizenship. An explanatory mixed methods design was used, and it involved collecting qualitative data after a quantitative phase in order to follow up on the quantitative data in more depth. In the first quantitative phase of the study, a…

  12. The Abbey Theatre Digital Archive: a digitization project with dramatic impact

    Directory of Open Access Journals (Sweden)

    John Cox

    2017-11-01

    Full Text Available National University of Ireland Galway digitized the archive of the Abbey Theatre between 2012 and 2015. This was the largest theatre archive digitization project worldwide and it has had a major impact on the University and its Library. The scale of the digitization project presented a series of challenges, including fragile material, limited time, streamlined workflows, complex digital rights management and effective systems. The project was completed on time and on budget in 2015, using a ‘more product, less process’ approach. Access to the Abbey Theatre Digital Archive has delivered strong academic impact for the University, generating new research income and international connections as well as contributing to improved institutional ranking. The Digital Archive enables new types of research, including text and data mining, and has reshaped undergraduate curricula. It has also had a transformative effect on the Library as leader of the project. The role of the archivist has changed and partnerships with the academic community have strengthened. A growing emphasis on digital publication has been a catalyst for a function- rather than subject-based organizational structure which promotes participation in digital scholarship initiatives, with archives and special collections occupying a new position of prominence.

  13. Testing the Andrews Framework of Strategy Formulation and Implementation: Case Study of the University of Cape Coast Digital Library in Ghana

    Directory of Open Access Journals (Sweden)

    Nesba Yaa Anima Adzobu

    2014-12-01

    Full Text Available This paper investigates how strategy formulation and implementation processes used by the University of Cape Coast (UCC in building its digital collections compare with the Andrew’s strategic formulation and implementation theoretical framework. Theory-testing case study methodology was used. The data collection instruments were the key informant interview technique and document reviews. During the formulation phase, two aspects (resources and aspirations of senior management were emergent. During the implementation phase, five aspects (achieving results, processes and behaviour, standards, motivation, personal were emergent. All other elements of building the UCC digital collections were planned during both the formulation and implementation phases. Although the emphasis on students and learning is laudable and apt, there seems to be lack of focus on research support beyond digital collection building, despite the fact that research excellence is one of the UCC’s key priorities. Opportunities exist for improving feedback mechanisms between the users, digital library staff and the university management; and inclusion of social media tools in the digital library project. Since only the experience of a single institution of higher learning is considered, it cannot be definitively stated that strategy formulation and implementation will be similar in every institutional context. However, the results provide a basis for academic digital libraries to draw lessons from this case. In African public universities, there is little earlier research on strategy formulation and implementation in digital library management. Strategy formulation and implementation is a critical issue for higher education academic libraries especially in developing countries like Ghana, due to limited financial resources and the rapid change in the information environment during the last several decades.

  14. Transformative Creativity in the Expanded Digital Field

    DEFF Research Database (Denmark)

    Søndergaard, Morten

    The idea that art may (can/will) transform ‘society’ is not a new one. Some would call it idealism - or an ideology, even – to have anything outside the market create transformation. But changes over the last decade, in the cultural constitution of the world’s global culture and economy, have......-practices like the Augmented Reality Project by the danish artgroup Boxiganga and the digital art/archive project MAP – Media Art Platform (Jacobsen og Søndergaard), which is using reactive media as a participatory strategy to map to a navigating audience the media art collection of The Museum of Contemporary...

  15. Digital Storytelling – Special issue

    Directory of Open Access Journals (Sweden)

    Yngve Nordkvelle

    2010-11-01

    foster professional health worker identity in students”, they focus the role of personal narratives, multimedia and the creative process in developing identity and voice. The project reviewed in their paper identifies contexts in higher education where digital storytelling may be used as a promising tool to support students’ learning, assisting them to combine theory and practical experience in their field of study. Community buildingSarah Copeland, of Leeds metropolitan University and Clodagh Miskelly, independent producer contribute with an article called: “Making time for storytelling; the challenges of community building and activism in a rural locale”. Their topic is how to engage prospective participants with using digital storytelling as a challenge in itself. Motivating and arguing for this way of expressing a voice has a better chance for success when one considers the various practical barriers that one meets when employing community media. They argue that an open discussion of projects that are less successful will enhance our practice and our understanding of processes intended to enable social change. Aneta Podkalicka, Swinburne University and Craig Campbell, Salvation Army of Melbourne contribute with the article: “Understanding digital storytelling: individual ‘voice’ and community-building in youth media programs”. Their topic is empowerment for marginalised voices across community-based projects worldwide. The paper discusses uses but also limitations of the practice in the context of a Melbourne-based youth media program for ‘youth at risk’ called YouthWorx. Genres of communicationKaren Rodriguez, of the CIEE Study Center in Guanajuato, Mexico, and Universidad de Guanajuato presents the article: “Digital storytelling in study abroad: toward a counter-catalogic experience”. She reports from a pilot project of how students on visits to a foreign university may use digital storytelling to expand their experiences and support their

  16. The Role of Entrepreneurial Knowledge and Skills in Developing Digital Entrepreneurial Intentions in Public Universities in Hamedan Province

    Directory of Open Access Journals (Sweden)

    Ahmad yaghoubi Farani

    2016-06-01

    Full Text Available The main purpose of this study was to extend the Theory of Planned Behavior (TPB to more comprehensively explain the formation of students’ digital entrepreneurial intentions.In particular, the extended TPB incorporates two critical constructs, namely entrepreneurial knowledge and skills into the original TPB model.Data were collected from 150 computer science students from four public universities in Hamedan province. The results of regression analysis showed that there was asignificant relationship between motivational factors such as attitudes, subjective norms and perceived behavioral control and digital entrepreneurial intentions. Also perceived behavioral control played the strongest role in the determination of digital entrepreneurial intentions.Furthermore, the results illustrated that entrepreneurial knowledge and skills significantly relate to digital entrepreneurial intentions. Based on the knowledge gained in this study, some recommendation were offered for developing entrepreneurial culture, knowledge and skillsin order topromoting digital entrepreneurship.

  17. Michigan State University Extension Educators' Perceptions of the Use of Digital Technology in Their Work

    Science.gov (United States)

    Wells, Elizabeth Chase

    2009-01-01

    This research study examined Michigan State University Extension educators' perceptions of the use of digital technology in their work. It used a mixed method of research which included a mailed survey and interviews of selected respondents. A census survey using Dillman's Total Design method was sent to 290 field staff of Michigan State…

  18. [Constructing 3-dimensional colorized digital dental model assisted by digital photography].

    Science.gov (United States)

    Ye, Hong-qiang; Liu, Yu-shu; Liu, Yun-song; Ning, Jing; Zhao, Yi-jiao; Zhou, Yong-sheng

    2016-02-18

    To explore a method of constructing universal 3-dimensional (3D) colorized digital dental model which can be displayed and edited in common 3D software (such as Geomagic series), in order to improve the visual effect of digital dental model in 3D software. The morphological data of teeth and gingivae were obtained by intra-oral scanning system (3Shape TRIOS), constructing 3D digital dental models. The 3D digital dental models were exported as STL files. Meanwhile, referring to the accredited photography guide of American Academy of Cosmetic Dentistry (AACD), five selected digital photographs of patients'teeth and gingivae were taken by digital single lens reflex camera (DSLR) with the same exposure parameters (except occlusal views) to capture the color data. In Geomagic Studio 2013, after STL file of 3D digital dental model being imported, digital photographs were projected on 3D digital dental model with corresponding position and angle. The junctions of different photos were carefully trimmed to get continuous and natural color transitions. Then the 3D colorized digital dental model was constructed, which was exported as OBJ file or WRP file which was a special file for software of Geomagic series. For the purpose of evaluating the visual effect of the 3D colorized digital model, a rating scale on color simulation effect in views of patients'evaluation was used. Sixteen patients were recruited and their scores on colored and non-colored digital dental models were recorded. The data were analyzed using McNemar-Bowker test in SPSS 20. Universal 3D colorized digital dental model with better color simulation was constructed based on intra-oral scanning and digital photography. For clinical application, the 3D colorized digital dental models, combined with 3D face images, were introduced into 3D smile design of aesthetic rehabilitation, which could improve the patients' cognition for the esthetic digital design and virtual prosthetic effect. Universal 3D colorized

  19. Final report on a pilot academic e-books project at Keio University Libraries : Potential for the scholarly use of digitized academic books

    Science.gov (United States)

    Shimada, Takashi

    This article reports on the results and significance of a pilot academic e-books project carried out at the Keio University Libraries for fiscal 2010 to 2012 to assess the viability of a new model of the libraries providing all the campuses with accesses to Japanese academic books digitized jointly with academic publishers and cooperative firms. It focuses on the experimental use of digitized books, highlighting the students’ attitudes and expectations towards e-books as found from surveys. Some major findings include the following. Users have a strong demand for digitized readings that are rather lookup-oriented than learning-oriented, with greater value placed on the functionalities of federated full-text searching, reading on a screen, and accessing the desired chapter direct from table of contents. They also want an online space in which to manage different forms of digitized learning resources. We investigated the potential of e-books and new type of textbooks as educational infrastructures based on the results of experiment. Japan’s university libraries should need to engage actively in the mass digitization of academic books to be adaptive to the change in the ways research, study and teaching are conducted. We plan to start a joint experiment with other university libraries to develop a practical model for the use of e-books.

  20. Enhancing Hubble's vision service missions that expanded our view of the universe

    CERN Document Server

    Shayler, David J

    2016-01-01

    After a 20-year struggle to place a large, sophisticated optical telescope in orbit the Hubble Space Telescope was finally launched in 1990, though its primary mirror was soon found to be flawed. A dramatic mission in 1993 installed corrective optics so that the intended science program could finally begin. Those events are related in a companion to this book, The Hubble Space Telescope: From Concept to Success.   Enhancing Hubble’s Vision: Service Missions That Expanded Our View of the Universe tells the story of the four missions between 1997 and 2009 that repaired, serviced and upgraded the instruments on the telescope to maintain its state-of-the-art capabilities. It draws on first hand interviews with those closely involved in the project. The spacewalking skills and experiences gained from maintaining and upgrading Hubble had direct application to the construction of the International Space Station and help with its maintenance. These skills can be applied to future human and robotic satellite servic...

  1. Rethinking Over Textuality of Digital Image: A Methodological Proposal for Pleasant Reading on Digital Screens

    Directory of Open Access Journals (Sweden)

    Cristian Álvarez

    2009-12-01

    Full Text Available It sets out the necessity about thinking over the instructional function of image in digital world under the light of the new opportunities of a methodological proposal to read as a game. First, for this reason it exams the perceptions of García Canclini about the reading of university students, and its problems on the context of new technologies: accumulation of information versus weakening of reflection. To this situation it adds the no appreciation of visual images. Faced with this problematic situation, and with the aim of sketching out options, it analyzes two experiences about books: the “tasty” reading of texts (the “good reading”, and the potentialities presented in the essential characteristics of playing. So, it proposes a methodology shaped for five steps to read images on digital screen. Its aim is seizing the possibilities of “good reading” to expand the comprehension of the visual information perceived through the screen. The proposal puts the accent in the textuality of representational surface of an image. Also it brings the attentive visual route about in order to enable to identify both significant forms and spaces. This proposal is illustrated with examples.

  2. Universal Service in a Broader Perspective: The European Digital Divide

    Directory of Open Access Journals (Sweden)

    Maria Concepcion GARCIA-JIMENEZ

    2009-01-01

    Full Text Available Ensuring universal service is a top objective in many countries in order that all the citizens can have access basic communications services. Although the ICT equipment in households and its usage by individuals are essential prerequisites for benefiting from ICTs, the situation in the European Union is far from uniform. This article provides a description of the European information society development scenario using the values reached by the member states in a set of indicators selected for measuring said progress in households. Two tools are used for providing a broader perspective of the digital divide: a composite index and the cluster analysis. Below, a study is provided on what variables are relevant for interpreting the situation that is presented.

  3. Perceptions of Library Staff Regarding Challenges of Developing Digital Libraries: The Case of an Iranian University

    Science.gov (United States)

    Mohsenzadeh, Faranak; Isfandyari-Moghaddam, Alireza

    2011-01-01

    Purpose: The present research aims to identify the difficulties and obstacles for developing digital libraries in the seven regional branches of Islamic Azad University (IAU), Iran, and to study the status of librarians' skills and education programmes at these institutions. Design/methodology/approach: The 40 individuals working in the regional…

  4. Open Educational Resources and the Opportunities for Expanding Open and Distance Learning (OERS-ODL

    Directory of Open Access Journals (Sweden)

    Jameson Mbale

    2013-05-01

    Full Text Available Distance learning (DL was a teaching modality which utilized technology to deliver teaching to students who were not physically present such as in a traditional classroom setting. DL was not constrained by geographic considerations and therefore offered unique opportunities to expand educational access. The University of Namibia (UNAM and International Training and Education Center for Health (I-TECH partnered to examine DL at UNAM, to assess strengths and weaknesses, and to make recommendations for improvement. The primary method used in this assessment was interviews with staff at centers and units engaged in Distance Learning at UNAM. It was analyzed how interactions vary between instructor and learner, among learners, and between learners and learning resources. DL at UNAM was categorized into five approaches including: 1 Outreach, 2 Print-based, 3 Computer based, 4 Internet-based, and 5 Digital Video Conferencing (DVC. All-in-all, a strategy of “starting small” was envisaged to allow individual instructors to voluntarily use collaborative software such as Google Groups to enhance print-based instruction and progressively expand DL at UNAM.

  5. Project GRACE A grid based search tool for the global digital library

    CERN Document Server

    Scholze, Frank; Vigen, Jens; Prazak, Petra; The Seventh International Conference on Electronic Theses and Dissertations

    2004-01-01

    The paper will report on the progress of an ongoing EU project called GRACE - Grid Search and Categorization Engine (http://www.grace-ist.org). The project participants are CERN, Sheffield Hallam University, Stockholm University, Stuttgart University, GL 2006 and Telecom Italia. The project started in 2002 and will finish in 2005, resulting in a Grid based search engine that will search across a variety of content sources including a number of electronic thesis and dissertation repositories. The Open Archives Initiative (OAI) is expanding and is clearly an interesting movement for a community advocating open access to ETD. However, the OAI approach alone may not be sufficiently scalable to achieve a truly global ETD Digital Library. Many universities simply offer their collections to the world via their local web services without being part of any federated system for archiving and even those dissertations that are provided with OAI compliant metadata will not necessarily be picked up by a centralized OAI Ser...

  6. Student Digital Piracy in the Florida State University System: An Exploratory Study on Its Infrastructural Effects

    Science.gov (United States)

    Reiss, Jeffrey

    2010-01-01

    Digital piracy is a problem that may never disappear from society. Through readily available resources such as those found in a university, students will always have access to illegal goods. While piracy is a global phenomenon, an institution's resources combined with the typical college student's lack of funds makes it more lucrative. Students…

  7. CONTEMPORARY DIPLOMATIC: REFLECTIONS ON THEIR APPLICABILITY IN THE DIGITAL AGE

    Directory of Open Access Journals (Sweden)

    William Silva

    2018-04-01

    Full Text Available Introduction: Over a long time, the Diplomatic contributed significantly to the identification of the authenticity of the documents, expanding its acting role when he was influenced by other disciplines such as modern archiving, which leveraged its object of study, showing the deep connection between species and its generating activity. Objective: This study aims to conduct reflections on the evolution of the Diplomatic Classical to Contemporary Diplomacy, the relationship between this discipline and Document Classification and its impact on the digital age, the constitution of the authenticity process of digital archival documents. Methodology: The nature of research is classified as basic, how to approach is classified as qualitative, the research objective classified as exploratory, involving literature review regarding the diplomatic in its relationship with the archival and employability in the digital age. Results: After searching, it is understood that the Diplomatic permeates time, on aspects of study of the documentary kind, yet its relationship with modern archiving, as is the study of the universe of the Document Type, identifying with Classification as matrix function of modern archiving, and using the analysis features of authenticity in the digital environment. Conclusion: It is evident that there is an intrinsic relationship between the Diplomatic in his contemporary perspective , with modern archiving , both in understanding the aspects of documentary typology , as an essential tool in the analysis of authenticity in the digital environment.

  8. A growing family: the expanding universe of the bacterial cytoskeleton.

    Science.gov (United States)

    Ingerson-Mahar, Michael; Gitai, Zemer

    2012-01-01

    Cytoskeletal proteins are important mediators of cellular organization in both eukaryotes and bacteria. In the past, cytoskeletal studies have largely focused on three major cytoskeletal families, namely the eukaryotic actin, tubulin, and intermediate filament (IF) proteins and their bacterial homologs MreB, FtsZ, and crescentin. However, mounting evidence suggests that these proteins represent only the tip of the iceberg, as the cellular cytoskeletal network is far more complex. In bacteria, each of MreB, FtsZ, and crescentin represents only one member of large families of diverse homologs. There are also newly identified bacterial cytoskeletal proteins with no eukaryotic homologs, such as WACA proteins and bactofilins. Furthermore, there are universally conserved proteins, such as the metabolic enzyme CtpS, that assemble into filamentous structures that can be repurposed for structural cytoskeletal functions. Recent studies have also identified an increasing number of eukaryotic cytoskeletal proteins that are unrelated to actin, tubulin, and IFs, such that expanding our understanding of cytoskeletal proteins is advancing the understanding of the cell biology of all organisms. Here, we summarize the recent explosion in the identification of new members of the bacterial cytoskeleton and describe a hypothesis for the evolution of the cytoskeleton from self-assembling enzymes. © 2011 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved.

  9. Digital radiography

    International Nuclear Information System (INIS)

    Rath, M.; Lissner, J.; Rienmueller, R.; Haendle, J.; Siemens A.G., Erlangen

    1984-01-01

    Using a prototype of an electronic, universal examination unit equipped with a special X-ray TV installation, spotfilm exposures and digital angiographies with high spatial resolution and wide-range contrast could be made in the clinic for the first time. With transvenous contrast medium injection, the clinical results of digital angiography show excellent image quality in the region of the carotids and renal arteries as well as the arteries of the extremities. The electronic series exposures have an image quality almost comparable to the quality obtained with cutfilm changers in conventional angiography. There are certain limitations due to the input field of 25 cm X-ray image intensified used. In respect of the digital angiography imaging technique, the electronic universal unit is fully suitable for clinical application. (orig.) [de

  10. Digital curation and online resources: digital scanning of surgical tools at the royal college of physicians and surgeons of Glasgow for an open university learning resource.

    Science.gov (United States)

    Earley, Kirsty; Livingstone, Daniel; Rea, Paul M

    2017-01-01

    Collection preservation is essential for the cultural status of any city. However, presenting a collection publicly risks damage. Recently this drawback has been overcome by digital curation. Described here is a method of digitisation using photogrammetry and virtual reality software. Items were selected from the Royal College of Physicians and Surgeons of Glasgow archives, and implemented into an online learning module for the Open University. Images were processed via Agisoft Photoscan, Autodesk Memento, and Garden Gnome Object 2VR. Although problems arose due to specularity, 2VR digital models were developed for online viewing. Future research must minimise the difficulty of digitising specular objects.

  11. Digital Games and Language Teaching and Learning

    Science.gov (United States)

    Sykes, Julie M.

    2018-01-01

    The digital gaming industry has captured the public's attention worldwide and in the United States alone, the video game industry is predicted to increase by 30% from 2010 to 2019, reaching $19.6 billion in revenue (Takahashi, 2015, n.p.). Not surprisingly, digital gameplay is also rapidly expanding in educational domains. Although researchers…

  12. Digital disruption ?syndromes.

    Science.gov (United States)

    Sullivan, Clair; Staib, Andrew

    2017-05-18

    The digital transformation of hospitals in Australia is occurring rapidly in order to facilitate innovation and improve efficiency. Rapid transformation can cause temporary disruption of hospital workflows and staff as processes are adapted to the new digital workflows. The aim of this paper is to outline various types of digital disruption and some strategies for effective management. A large tertiary university hospital recently underwent a rapid, successful roll-out of an integrated electronic medical record (EMR). We observed this transformation and propose several digital disruption "syndromes" to assist with understanding and management during digital transformation: digital deceleration, digital transparency, digital hypervigilance, data discordance, digital churn and post-digital 'depression'. These 'syndromes' are defined and discussed in detail. Successful management of this temporary digital disruption is important to ensure a successful transition to a digital platform. What is known about this topic? Digital disruption is defined as the changes facilitated by digital technologies that occur at a pace and magnitude that disrupt established ways of value creation, social interactions, doing business and more generally our thinking. Increasing numbers of Australian hospitals are implementing digital solutions to replace traditional paper-based systems for patient care in order to create opportunities for improved care and efficiencies. Such large scale change has the potential to create transient disruption to workflows and staff. Managing this temporary disruption effectively is an important factor in the successful implementation of an EMR. What does this paper add? A large tertiary university hospital recently underwent a successful rapid roll-out of an integrated electronic medical record (EMR) to become Australia's largest digital hospital over a 3-week period. We observed and assisted with the management of several cultural, behavioural and

  13. Digital Divide in the Utilization of Information and Communication Technology (ICT) in Counsellor Education in Nigerian Universities

    Science.gov (United States)

    Eyo, Mfon

    2014-01-01

    This study investigated digital divide in the utilization of Information and Communication Technology (ICT) in counsellor education in Nigerian universities. It had two research questions and two hypotheses tested at 0.05 level of significance. It adopted a survey design and used ICT Utilization Questionnaire (IUQ) in gathering data from the…

  14. A digital platform for university education on geomorphosites

    Science.gov (United States)

    Coratza, Paola; Reynard, Emmanuel; Cayla, Nathalie; Comanescu, Laura; Darbellay, Lucie; Giusti, Christian; Grecu, Florina; Pereira, Paulo

    2016-04-01

    The working group on Geomorphosites of the International Association of Geomorphologists (IAG) is active since 2001 and has developed research activities on issues related to the geomorphological heritage (geomorphosites) (Reynard and Coratza, 2013). In parallel to the research activities, several intensive courses for Ph.D. and Master students have been organized since 2006 in various universities (Lausanne, Lesvos, Minho, Savoie, Beni Mellal) and a textbook for students was edited in 2009 (Reynard et al., 2009). The platform INTERGEO is prepared as a way to disseminate knowledge on geomorphological heritage, in particular in universities of developing countries where access to scientific papers and textbooks is not easy. It aims at improving students' autonomy by the reduction of frontal teaching and increasing autonomous learning as well as promoting international interactions between students interested in geomorphosite topics. The course, developed with the Learning Management System Moodle, is a completely free-access course. It is divided into four parts: (1) Generalities - definitions, links with heritage and landscape studies, active geomorphosites, the IAG working group; (2) Methods - selection and assessment, mapping issues, geomorphosite visualization, technical and digital tools in geomorphosite studies; (3) Conservation and promotion - example of geomorphosite studies related to geoconservation, geoparks, protected areas, World Heritage Sites, geotourism and interpretation, and natural hazards; (4) Examples - cultural, karstic, coastal, mountainous, fluvial, volcanic and anthropogenic geomorphosites. Each chapter contains a short description, a list of references, selected publications, as well as other educational material, e.g. videos, virtual fieldtrips, etc. In particular, several videos allow presenting in a very dynamic way concepts and examples. The content of the course will evolve and will be completed in the future. Most of the content is

  15. A lightweight universe?

    Science.gov (United States)

    Bahcall, Neta A.; Fan, Xiaohui

    1998-01-01

    How much matter is there in the universe? Does the universe have the critical density needed to stop its expansion, or is the universe underweight and destined to expand forever? We show that several independent measures, especially those utilizing the largest bound systems known—clusters of galaxies—all indicate that the mass-density of the universe is insufficient to halt the expansion. A promising new method, the evolution of the number density of clusters with time, provides the most powerful indication so far that the universe has a subcritical density. We show that different techniques reveal a consistent picture of a lightweight universe with only ∼20–30% of the critical density. Thus, the universe may expand forever. PMID:9600898

  16. Gravity Does it: Redshift of Light from the Galaxies Yes, Expanding Universe NO!

    Science.gov (United States)

    Malhotra, Satish

    2018-04-01

    In the history of physics, ideas on space and time have changed the course of physics a number of times; this is another such event. We postulate 'space and time' as a flow of quantum gravity energy, having the absolute velocity c (same as velocity of light), where time is the delay in the spread of space (delay from infinite velocity flow, when there would be no time), such a flow has to have a reverse cycle, as energy creating it (howsoever large it might be has to be limited and limited energy can only create a limited space and time energy spread) and the reverse cycle is that of the creation of fundamental particles. This explanation of the universe tells us that the idea of an expanding universe is only an appearance, the argument, in brief, is as follows: One, the universe is so large that we cannot see the edges, light from the edges, the reality is non-observable. Two, the process is dark, it is beyond observation, the process of creation of charge (the reflection of light starts with it), the space energy flow process is in the range of invisible (before charge emerged); it is the elusive dark energy of the universe; we never connected space and time to flow of energy, and so did not find its connection either to its limitedness or to its dark nature (dark energy). Three, the space energy flow has a reverse process which leads to the formation of fundamental particles we have not included it in the totality of the processes of the universe, the former is the dark energy and the initial part of the reverse process—till it reaches the state of ionisation-- is dark matter. In the continuity of the cycle of space flow and its reversal to matter forms, ionisation happens at a particular point and visibility comes through along with; ionisation here is a later event (which is a part of the reverse process, enters visibility).It is this reverse process which creates fundamental particles (no big bang creation. With no idea of space as energy flow and no idea

  17. Mewujudkan Sekolah atau Kampus Digital

    Directory of Open Access Journals (Sweden)

    M. Eka Mahmud

    2011-06-01

    Full Text Available The information age is supported by the power of information and communication technology, known as ICT (information communication and technology, has a great influence in the lives of everyday people, such as ways of working and managing organizations (including educational institutions as well as the perception of the outside world. Thus, interactions between individuals, organizations, communities and countries can be carried out unimpeded by space, time and integrated into the global communications network. Management of the school/university-based digital is managing cultural change, values, and ways to communicate and interact in the education building. Strategic steps undertaken to get to school / university digital is the establishment of an agency that works to provide accelerated programs school/university digital works; work easier for the technical operational issues related to the digital world, he worked his support to all operational difficulties be easy.

  18. Digital terrestrial broadcasting receiver in the U.K; Eikoku chijoha digital hoso jushinki

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    Digital terrestrial broadcasting is broadcasted in parallel with existing UHF analog broadcasting, whereas each of allocated channel frequencies can transmit five to six programs simultaneously. Each home can receive a number of programs with the existing antenna without a need of installing a new satellite antenna or cable. Among the countries of the world running forward to digitization of broadcasting all at once, the U.K. develops advancing movements and leads the world by starting the digital terrestrial broadcasting. In addition to the digitized broadcasting of conventional analog broadcasting programs, the `Ondigitals` (broadcasting operators) have started newly the pay broadcasting. Toshiba has been selected as one of the six developers and manufacturers of digital terrestrial broadcasting receivers, and has developed the digital terrestrial broadcasting receiver DTB2000. For the modulation system, the orthogonal frequency division multiplex (OFDM) was chosen as a system being strong against ghost and most suitable for digital terrestrial broadcasting. In addition, the receiver is equipped with software download function by using the broadcasting waves, and the common interface being the communication specification specified in the DVB (digital video broadcasting) to provide future function expandability. (translated by NEDO)

  19. The Dichotomous Cosmology with a Static Material World and Expanding Luminous World

    Directory of Open Access Journals (Sweden)

    Heymann Y.

    2014-07-01

    Full Text Available The dichotomous cosmology is an alternative to the expanding Universe theory, and consists of a static matter Universe, where cosmological redshifts are explained by a tired-light model with an expanding luminous world. In this model the Hubble constant is also the photon energy decay rate, and the luminous world i s expanding at a constant rate as in de Sitter cosmology for an empty Universe. The present model explains both the luminosity distance versus redshift relationship of supernovae Ia, and ageing of spectra observed with the stretching of supernovae light curves. Furthermore, it is consistent with a radiation energy density factor (1 + z 4 inferred from the Cosmic Microwave Background Radiation.

  20. An Educational Look at an alternative to the Expanding Universe Model

    Science.gov (United States)

    Kriske, Richard

    2009-11-01

    The author often toys with an alternative view to the expanding universe model and believes it would be a good way to teach the Scientific method. In the author's (R.M. Kriske) model the red shift is a result of magnifying the horizon of a 4 dimensional surface. On a two dimensional surface such as the earth the horizon is not maginifiable since things on the surface naturally tilt away from the observer in every direction and everything is transformed into a curved line (the Horizon) (the students can verify this as a globe can be used with some pins in it-for example). Likewise one would expect this signature of curvature to show up on three curved space dimensions, and instead of pins, a perpendicular time dimension. As the observer looks toward the pins they tilt away from him/her and in four dimensions this means they are accelerating away from him/her even though the globe is standing still. At each point a pair is being produced with its attendant gamma ray emission, but the points are of course seen as accelerating away, simply due to the curvature of the globe and nothing else, resulting in a red shift. This author produced model has never been suggested before and never presented to the Scientific community. The students would then need to compare this to the current simpler model that point sources accelerating away from the observer undergo a redshift due to the Doppler Effect. The Students would then have to review these models and determine the size of the globe for the amount of red shift seen from the two competing models. One model has a cut- off mode, since the pins not only tip backward in the curved space model but are also cut off. How does this cut-off show up, is it simply dimming, and can an experiment be done for it? The last step of this exercise is to see if one could tell the difference between these models, and if a mixed model is better, since the Globe could also be expanding (Of course the instructor could also ask what the result

  1. Emergent Principles for Digital Documentary

    Directory of Open Access Journals (Sweden)

    Richard Lachman

    2016-12-01

    Full Text Available Digital Documentaries are an area of rapid invention and experimentation at all levels, including creative content, production techniques, and business models.  As with many forms of digital storytelling, a focus on technologies can be distracting; platforms change rapidly, and are dependent on external commercial forces rather than creative potential.  This article presents several design strategies for driving experimentation in digital documentary above and beyond the specific of platform and technology. The core focus is on treating digital docs as experiences, with an expanded range of designable moments, as well as a strategic approach to designing interactions for their unique set of challenges.  The discussion is not intended to fully define digital documentary design factors, but rather, defines a useful subset of methods that can lead emerging practitioners to new innovations in their approach.

  2. Editorial volume 3 - issue 1: Wishes and hopes for the digital university.

    Directory of Open Access Journals (Sweden)

    Yngve Nordkvelle

    2007-12-01

    issue. They suggest that letting university teachers study online would be a valuable exercise before letting them organize and run online learning themselves. Their paper reveals how teachers reflect on being students themselves when they learn how to study online. This is in a profound way an essential step in making colleagues critical about e-learning. Kristen Snyder coins the term “digital culture” as a key term in understanding the “information age”. She proposes that technology in human communication is a part of the communication act and therefore a part of the process of creating meaning. Her aim is to develop an awareness of the implications for behavior, norms and values, and how meaning making is integral to understanding the digital culture. She addresses in many respect the concerns voiced by Douglas Kellner (above. In developing a digital culture within the university, we can already trace significant differences between student cohorts. A general feeling is that mature students are less confident with ICT and its associated soft- and hardware than the youngest students arriving directly from upper secondary education. In a journal addressing lifelong learning, Håvard Skaar’s contribution suggests it is interesting to understand children’s learning processes from an early stage in the area of ICT. The article focuses on how boys and girls express themselves differently when using multimedia. Finally, Gunilla Jedeskog, who has followed the implementation of ICT in Swedish schools for more than two decades, makes an analysis of policy documents that guided this development. She addresses ownership of the process, and how it was interpreted. She finds that implementation was anything but a streamlined process, in many ways similar to the process in higher education, and that it changed focus over time. References:Burbules, N. C. og Callister, T. A.jr. (2000 Watch IT. The Risks and Promises of Information Technologies for Education. Boulder, Col

  3. Teleradiology and PACS - strategy of the Innsbruck University Hospital

    International Nuclear Information System (INIS)

    Vogl, R.

    2005-01-01

    Systems for management of digital imaging data are very important and widespread at the Innsbruck University Hospital and constitute a central component of the IT strategies followed by the hospital operating company TILAK (Tyrolean public hospitals). The particular goal is to integrate all imaging data into the electronic medical records and make these available online to each of the approx. 2500 clinic workstations and ensure electronic data exchange with other healthcare services. Teleradiology connections have been established at the University Clinic for Radiology since 1995; these have been continually expanded and linked to the central PACS. An eHealth web portal was recently established to facilitate transfer of images and findings from TILAK hospitals to other healthcare organizations. Registered users can be cleared for a limited time to access all radiological imaging data via this web portal. (orig.) [de

  4. Pedagogical Digital Competence--Between Values, Knowledge and Skills

    Science.gov (United States)

    From, Jorgen

    2017-01-01

    The fact that the education provided by universities and university colleges is becoming ever more digitalized has resulted in new challenges for university teachers in providing high-quality teaching and adapting to the needs of changing student populations. Digitalization has increasingly introduced a new dimension in teachers' pedagogical…

  5. Comprehension of texts in Digital Format versus Printed Texts and Self-Regulated Learning in University Students

    Directory of Open Access Journals (Sweden)

    Paula Gabriela Flores-Carrasco

    2016-12-01

    Full Text Available This article aims (1 to describe the levels of self-regulation and reading comprehension of scientific expository texts; (2 to establish the relationship between self-regulation and reading comprehension; and (3 to compare the performance in comprehension when the printed media (paper or digital media (computer is used. A quasi-experimental, quantitative, descriptive and correlative design was implemented. The sample was composed of 55 university students from four careers of Education; they were in 1st and 3rd year of study at a regional university of the Council of Rectors of Chilean Universities. Three measuring instruments were used: a questionnaire of self-regulated learning and two comprehension tests based on the understanding of Parodi’s (2005 assessment model. The implementation was made in two consecutive moments; first, the self-questionnaire; then, the tests for reading comprehension in both media. With the data obtained, statistical tests of variance, one-way ANOVA, Pearson’s correlation, and means comparison with Bruner and Munzel and U-Mann Whitney’s tests were calculated. In conclusion, and different from the initial statement, it was obtained that university students have an adequate level of self-regulation and low reading comprehension in both data, even the scores are relatively lower in digital data. In both data the output is inverse to the complexity of the questions. Between 1st and 3rd year, there is no increase either in the self-regulation or in reading comprehension; but, exceptionally, the career of Primary General Education specialist on Language and History did. There is a strong relationship between reading comprehension in printed media and self-regulation (ARATEX. The support does not affect reading comprehension, but individual reading skills of the subjects do. A competent reader will have similar performance in both reading supports.

  6. Digital delicacies

    OpenAIRE

    Holley, Rose

    2001-01-01

    This presentation outlines the purpose and work of the newly appointed Digital Projects Librarian at the University of Auckland. It gives a brief overview of what digitisation is, the benefits, the stages of a digitisation project and also samples of interesting international digitisation projects and new University of Auckland Library Digitisation projects.

  7. Influence of digitalization on labour relations

    Directory of Open Access Journals (Sweden)

    Jašarević Senad R.

    2016-01-01

    Full Text Available Modern information technology has brought a real revolution in all areas of life and work. The degree of 'digitization' is so great that some authors call this process 'digital revolution', and modern economy - 'digitized economy.' Although it is not so obvious, gradualy is forming a new society - 'digital capitalism'. For 'virtual employers', in the new - 'virtual economy', work 'digital workers' who are mainly invisible and deprived of their labour rights. That's why some call them - 'digital proletariat'. Labour law is slowly adapting to the new circumstances. An increasing number of people remain unprotected or poorly protected. It is necessary to completely re-examine and update the traditional concept of labor law, by expanding access of the labour law to the 'digital workers', modernizing the concept of employment, of an employee, worker, self-employee and employer. Digital technology should be converted into a 'fellow worker' (worker friendly and not a tool of a new form of exploitation. Otherwise, modern 'digitalized society' will turn into a 'community of rightless,' without social and economic perspective.

  8. Case study : The California Digital Library

    OpenAIRE

    Ober, John

    2002-01-01

    The California Digital Library was founded in 1997 as a digital “co-library” of the 10 Universities of California campuses. Responses to crisis in scholarly communication and the opportunity presented by digital technologies and the Web. Charged to create a comprehensive system for the management of digital scholarly information.

  9. The Digital Archiving of Endangered Language Oral Traditions: Kaipuleohone at the University of Hawai‘i and C’ek’aedi Hwnax in Alaska

    Directory of Open Access Journals (Sweden)

    Andrea L. Berez

    2013-10-01

    Full Text Available This essay compares and contrasts two small-scale digital endangered language archives with regard to their relevance for oral tradition research. The first is a university-based archive curated at the University of Hawai‘i, which is designed to house endangered language materials arising from the fieldwork of university researchers. The second is an indigenously-administered archive in rural Alaska that serves the language maintenance needs of the Ahtna Athabaskan Alaska Native community.

  10. Energy Efficient Digital Networks

    Energy Technology Data Exchange (ETDEWEB)

    Lanzisera, Steven [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Brown, Richard [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

    2013-01-01

    Digital networks are the foundation of the information services, and play an expanding and indispensable role in our lives, via the Internet, email, mobile phones, etc. However, these networks consume energy, both through the direct energy use of the network interfaces and equipment that comprise the network, and in the effect they have on the operating patterns of devices connected to the network. The purpose of this research was to investigate a variety of technology and policy issues related to the energy use caused by digital networks, and to further develop several energy-efficiency technologies targeted at networks.

  11. Digital Exhibitionism The Age of Exposure

    Directory of Open Access Journals (Sweden)

    Ana María Munar

    2010-09-01

    Full Text Available Web 2.0 has expanded the possibilities of digital creative production by individu-als and enabled the digitalisation of private life experiences. This study analyses how social media contributes to the making of personal biographies and discusses the shift towards a culture of digital exposure. This study uses netnography and a constructive approach to examine online communities and social networks. The findings illustrate that these new technological platforms are mediating in the con-struction of late modern biographies, which are expanding the complexity of to-day’s socio-technical systems. The paper discusses the power of these technolo-gies as agents of socio-cultural change and suggests that, besides providing indi-vidual realisation and mediated pleasure, these technologies encourage exhibitio-nistic and voyeuristic behaviour, elude reflexivity, and display authoritative ten-dencies and new possibilities for social control.

  12. University Mentoring with the Support of a Digital Pen and Hypermedia Resources

    Directory of Open Access Journals (Sweden)

    Manuel Francisco Aguilar Tamayo

    2014-12-01

    Full Text Available This paper systematizes face-to-face tutoring experience and the use of technologies to make audio and written recordings of tutorial sessions with undergraduate, master’s and doctoral students available online. One hundred and three tutorial sessions with 26 students and a single tutor are analyzed; the sessions were recorded by means of a digital pen that recorded sound and writing synchronously. By means of this analysis students’ issues and problems were identified and a model for connecting teaching strategy and the production of hypermedia resources is presented. We contend that it is important to create learning resources to accompany the educational process of tutees. In conclusion the study presents a model for organizing and supporting university level tutoring.

  13. Transcribing and digitizing eighteenth- and nineteenth-century letters for a historical digital repository.

    Science.gov (United States)

    Dunster, Emily S; Kipnis, Daniel G; Angelo, F Michael

    2014-01-01

    In fall 2011, the Scott Memorial Library purchased 53 letters belonging to an 1841 graduate of Jefferson Medical College, John Plimpton Green. The library staff transcribed and digitized the letters, creating an online collection in the university's institutional repository, Jefferson Digital Commons. This article will detail the process of transcribing and digitizing the collection along with sharing statistics and the benefits of this project to global researchers.

  14. The isotropic Universe

    International Nuclear Information System (INIS)

    Raine, D.J.

    1981-01-01

    This introduction to contemporary ideas in cosmology differs from other books on the 'expanding Universe' in its emphasis on physical cosmology and on the physical basis of the general theory of relativity. It is considered that the remarkable degree of isotropy, rather than the expansion, can be regarded as the central observational feature of the Universe. The various theories and ideas in 'big-bang' cosmology are discussed, providing an insight into current problems. Chapter headings are: quality of matter; expanding Universe; quality of radiation; quantity of matter; general theory of relativity; cosmological models; cosmological tests; matter and radiation; limits of isotropy; why is the Universe isotropic; singularities; evolution of structure. (U.K.)

  15. Pair correlations in an expanding universe for a multicomponent system

    International Nuclear Information System (INIS)

    Kandrup, H.E.

    1983-01-01

    Fall and Saslaw have derived an equation for the growth of pair correlations in an expanding universe of identical self-gravitating point masses which is correlation-free at some initial time. Their equation is rigorously true for the earliest stages of growth, assuming only that the system is spatially homogeneous and isotropic, and that it is characterized in the ''comoving frame'' by a Maxwellian distribution of velocities. This paper generalizes their analysis to the case of a multicomponent system of particles with different masses, each species of which is characterized by a Maxwellian distribution at the same temperature. Here there are two types of pair correlations to consider, namely among members of the same species and among members of different species. The general behavior may be understood most readily by considering the covariance functions, which assume very simple forms. Thus one finds that the ''strength'' of the covariance scales, for sufficiently small radial separations, as the product of the masses, whereas the ''range'' of the covariance varies inversely as the square root of the reduced mass of the two constituents. This implies that, for two very different masses, the ''range'' will be set by the lighter constituent. Knowledge of the covariances also permits the calculation of such objects as the correlational energy densities of the various interactions. Consider, for example, a two-component system. Here one finds that even a very small contamination of heavy masses, which would have a negligible effect upon the total mass or kinetic energy densities, can increase the total correlational energy density, and hence decrease the time scale for the evolution of interesting structure, by orders of magnitude

  16. CCTV networking and digital technology

    CERN Document Server

    Damjanovski, Vlado

    2005-01-01

    Closed circuit television (CCTV) is experiencing a leap in technology using digital techniques, networking and the Internet. The new edition of this high-level professional reference retains the particulars that made the first edition a success, including the details of CCD cameras, lenses, coaxial cables, fiber-optics, and system design, but it is expanded to cover all video compression techniques used in the ever increasing assortment of digital video recorders (DVRs) available on the market today. This new edition of the book CCTV demystifies DVR technology. It also serves to clarify the te

  17. The Impact of Digital Financial Services on Firm's Performance : A Literature Review

    NARCIS (Netherlands)

    Abbasi, Tariq; Weigand, Hans

    Digital Financial Services continue to expand and replace the delivery of traditional banking services to the customers through innovative technologies to meet the growing complex needs and globalization challenges. These diversified digital products help the organizations (service providers) to

  18. The expanding Universe a primer on relativistic cosmology

    CERN Document Server

    Heacox, William D

    2015-01-01

    Cosmology - the science of the Universe at large - has experienced a renaissance in the decades bracketing the turn of the twenty-first century. Exploring our emerging understanding of cosmology, this text takes two complementary points of view: the physical principles underlying theories of cosmology, and the observable consequences of models of Universal expansion. The book develops cosmological models based on fundamental physical principles, with mathematics limited to the minimum necessary to keep the material accessible for students of physics and astronomy at the advanced undergraduate level. A substantial review of general relativity leading up to the Einstein field equations is included, with derivations of explicit formulations connecting observable features of the Universe to models of its expansion. Self-contained and up to date in respect of modern observations, the text provides a solid theoretical grounding in modern cosmology while preparing readers for the changes that will inevitably come fr...

  19. Digital natives revisited: the need to reorganize academic institutions and conceptual categories in a digital world

    DEFF Research Database (Denmark)

    Jensen, Tine Wirenfeldt; Albrechtsen, Charlotte; Pedersen, Nicholai Friis

    with students. Digital technology and modern students’ use of it means that Higher Education is faced with new expectations from young people regarding what digital possibilities are available to them to engage in as students of modern universities. With the recent rise of smartphones young people are becoming...... of Higher Education. But the structure of today’s universities are poorly suited to meet this demand for new digital technologies that can easily be incorporated in the everyday lives of modern students, and as a consequence there is what has been aptly named an app gap in Higher Education (Prensky, 2012......The highly influential concept of ”digital natives” (Prensky, 2001) has been challenged by recent research (e.g. Margaryan et al (2012), Hargittai (2010) whose findings does not support the notion of all modern students being users of digital media. However, this research does not build on data...

  20. First year university student engagement using digital curation and career goal setting

    Directory of Open Access Journals (Sweden)

    Amy Antonio

    2015-10-01

    Full Text Available The engagement of students is one of the most pressing issues facing higher education in the 21st century. Around the world, participation rates in tertiary education are on the rise and one of the key challenges facing educators is finding ways to engage these students. We present the results of a project that assesses the impact of an engagement strategy in which a cohort of students entering their first year of university (1 establish and maintain a clear goal of their ideal future career and (2 make use of a web-based digital curation tool to research and present their findings. The results demonstrate the effectiveness of the strategy, which could arguably be applied to a broad range of disciplines given that the majority of students today are technologically literate.

  1. Review of DigitalSignage.com

    Directory of Open Access Journals (Sweden)

    Clifford Richmond

    2014-04-01

    Full Text Available Digital signage has been used in the commercial sector for decades. As display and networking technologies become more advanced and less expensive, it is surprisingly easy to implement a digital signage program at a minimal cost. In the fall of 2011, the University of Florida (UF, Health Sciences Center Library (HSCL initiated the use of digital signage inside and outside its Gainesville, Florida facility. This article details UF HSCL's use and evaluation of DigitalSignage.com signage software to organize and display its digital content.

  2. Review of DigitalSignage.com

    OpenAIRE

    Clifford Richmond; Matthew Daley

    2014-01-01

    Digital signage has been used in the commercial sector for decades. As display and networking technologies become more advanced and less expensive, it is surprisingly easy to implement a digital signage program at a minimal cost. In the fall of 2011, the University of Florida (UF), Health Sciences Center Library (HSCL) initiated the use of digital signage inside and outside its Gainesville, Florida facility. This article details UF HSCL's use and evaluation of DigitalSignage.com signage so...

  3. Moving Teaching and Learning into the Digital Era

    Directory of Open Access Journals (Sweden)

    Ramlee Mustapha

    2017-08-01

    Full Text Available Digital learners, who are now entering schools and universities, have learning expectations, styles, and needs different from past students. Today’s Gen-Z communicates in a language that older generation may not fully understand; the aforementioned learners have a vernacular of their own. It’s an ever-evolving language of interpretation and expression, an interactive approach to learning, creating and responding to information through a complex montage of images, sound, and communication. Students are pushing learning into a new dimension. It’s a mistake to continue to try to teach these learners in time-worn ways. Their choices of communication need to be diversified to encompass visual interpretations of texts and historical figures. Vast challenges have arisen and the impact of technology on the socio-economic landscape is becoming more significant. Gen-Z takes advantage of the enormous resources of the Web, transforming what they find there by using digital technologies to create something new and expressive. More advanced and specialized courses could also be converted, although some level of face-to-face contact is necessary to master such material. Unless teachers are trained to expect and accept content gathered through social networks with emphasis on teaching students how to check validity and reliability of the web, the full power of the digital natives cannot be released or expanded. Educators have to adjust their teaching styles to accommodate a new generation of Gen-Z. This paper, which is a predominantly theoretical one, maintains that creative thinking and a firm commitment are needed to move teaching and learning into the digital age.

  4. Women Engineering Faculty: Expanding the Pipeline

    Science.gov (United States)

    Greni, Nadene Deiterman

    2006-01-01

    The purpose for this case study was to explore the features of undergraduate engineering departmental and college support that influenced the persistence of women students. Women engineering faculty members were among the participants at three Land Grant universities in the Midwest. The data revealed the theme, Expanding the Pipeline, and…

  5. The influence of institutional measures and technological proficiency on university teaching through digital platforms

    Directory of Open Access Journals (Sweden)

    Tirado, Ramón

    2012-06-01

    Full Text Available The objective of this study is to empirically test the theoretical model that explains the influence of primary and secondary factors on the integration of digital platforms in university teaching. A sample of 495 teachers from universities in Andalusia completed an online questionnaire that analysed the functions of usage, the digital materials used, the didactic and technological competence of the teaching staff, the support measures adopted by the institutions and the effect on teaching of platform use. Prior factor analysis and the application of the Amos program enabled us to develop a structural equation model to corroborate the indirect influence of the support measures and institutional recognition on teachers in their use of the platforms, and the direct influence of the teachers’ technological proficiency. Este estudio tiene como objetivo poner a prueba empíricamente el modelo teórico que explica la influencia de los factores de primer y segundo orden sobre la integración de las plataformas digitales en la docencia universitaria. Para ello, sobre una muestra de 495 profesores universitarios andaluces, se aplica un cuestionario online que analiza las funciones de uso, materiales digitales utilizados, competencia didáctica y tecnológica del profesorado, medidas de impulso institucionales, y efectos didácticos del uso. El análisis factorial previo y la aplicación del programa Amos permite la elaboración un modelo de ecuación estructural que corrobora la influencia indirecta de las medidas de apoyo y el reconocimiento institucional sobre los efectos didácticos del uso de plataformas, así como la influencia directa de la competencia tecnológica del profesorado.

  6. The digital revolution in financial inclusion: International development in the fintech era

    OpenAIRE

    Gabor, D.; Brooks, S.

    2017-01-01

    This paper examines the growing importance of digital-based financial inclusion as a form of organising development interventions through networks of state institutions, international development organisations, philanthropic investment and fintech companies. The fintech–philanthropy–development complex generates digital ecosystems that map, expand and monetise digital footprints. Its ‘know thy (irrational) customer’ vision combines behavioural economics with predictive algorithms to accelerat...

  7. Educational Impact of Digital Visualization Tools on Digital Character Production Computer Science Courses

    Science.gov (United States)

    van Langeveld, Mark Christensen

    2009-01-01

    Digital character production courses have traditionally been taught in art departments. The digital character production course at the University of Utah is centered, drawing uniformly from art and engineering disciplines. Its design has evolved to include a synergy of computer science, functional art and human anatomy. It gives students an…

  8. Using Digital Games to Learn Mathematics – What students think?

    OpenAIRE

    Su Ting Yong; Ian Harrison; Peter Gates

    2016-01-01

    The aim of this study was to explore how university foundation students perceive the use of digital games in learning mathematics. Data was collected using an online questionnaire and 209 foundation university students participated in this study.  The questionnaire was used to explore students’ gaming experience and students’ attitude towards mathematics learning with digital games.  It was found that most of the university foundation students liked to play different types of digital games.  ...

  9. The establishment phases of ETD program in a brand new University

    KAUST Repository

    Baessa, Mohamed A.

    2014-07-24

    For many Universities, ETD is a combination of digitized documents and digitally born documents. But at brand new Universities like King Abdullah University of Science and Technology (KAUST), or more specifically for the libraries that born digitally, est

  10. Microbial Genomics: The Expanding Universe of Bacterial Defense Systems.

    Science.gov (United States)

    Forsberg, Kevin J; Malik, Harmit S

    2018-04-23

    Bacteria protect themselves against infection using multiple defensive systems that move by horizontal gene transfer and accumulate in genomic 'defense islands'. A recent study exploited these features to uncover ten novel defense systems, substantially expanding the catalog of bacterial defense systems and predicting the discovery of many more. Copyright © 2018 Elsevier Ltd. All rights reserved.

  11. Fast digital recorders of signal shaping

    International Nuclear Information System (INIS)

    Meleshko, E.A.

    1997-01-01

    Methodology of fast digital registration and pulse signals through fast-action analog-to-digital converters is considered. Systems of digital recorders: sampling and storage devices and operational memory units are described. Main attention is paid to developing parallel analog-to-digital converters, making it possible to bring the conversion frequencies up to several gigahertzes are described. Parallel-sequential analog-to-digital converters, combining high action with increased accuracy are also considered. Concrete examples of designing universal and specialized digital signal recorders, applied in experimental physics, are presented. 44 refs., 12 figs

  12. The Role of IT Literacy in Defining Digital Divide Policy Needs

    Science.gov (United States)

    Ferro, Enrico; Helbig, Natalie C.; Gil-Garcia, J. Ramon

    2011-01-01

    This article expands our current understanding of the digital divide by examining differences in individuals' IT skills acquisition. In the last two decades scholars have gradually refined the conceptualization of the digital divide, moving from a dichotomous model mainly based on access, to a multidimensional model accounting for differences in…

  13. Use of Digital Signal Processors (DSP) in high energy physics experiments

    International Nuclear Information System (INIS)

    Crosetto, D.

    1988-01-01

    The FDDP - Fast Digital Data Processor - is a modular system for executing parallel digital processing algorithms to perform programmable trigger decisions or programmable on-line data reduction. Typical application involve zero suppression and pulse shape analysis. The characteristics of the system are: modularity, expandability and flexibility. (author). 4 refs, 5 figs

  14. Digital asset ecosystems rethinking crowds and cloud

    CERN Document Server

    Blanke, Tobias

    2014-01-01

    Digital asset management is undergoing a fundamental transformation. Near universal availability of high-quality web-based assets makes it important to pay attention to the new world of digital ecosystems and what it means for managing, using and publishing digital assets. The Ecosystem of Digital Assets reflects on these developments and what the emerging 'web of things' could mean for digital assets. The book is structured into three parts, each covering an important aspect of digital assets. Part one introduces the emerging ecosystems of digital assets. Part two examines digital asset manag

  15. Do Gender and Age Affect the Level of Digital Competence? A Study with University Students

    Directory of Open Access Journals (Sweden)

    Marcos CABEZAS GONZÁLEZ

    2017-12-01

    Full Text Available The characteristics of Information and Communication Technologies (ICT and their implementation at the global level have led to significant changes in different areas, especially institutional ones. This article presents the results of a research study whose purpose was to learn the level of digital competence of university students of education and to verify whether the variables of gender and age have any influence on it. A quantitative methodology was used, with a non-experimental, descriptive and inferential method, and the digital questionnaire was employed as an instrument for collecting information on the dimensions of knowledge and management of ICTs as well as attitudes towards them. The data were analysed based on a comparison of means, using non-parametric tests. The results show that the sample studied self-evaluated negatively their knowledge of ICT concepts, considered positive their management of devices, tools and services, and showed a very positive attitude toward technology. Regarding the variables studied, significant differences were found in favour of men in relation to knowledge and management, and in favour of older subjects with regard to attitude.

  16. Digital subtraction angiography in traumatology

    International Nuclear Information System (INIS)

    Steudel, A.; Harder, T.; Lackner, K.; Schneider, B.; Orellano, L.; Bonn Univ.; Bonn Univ.

    1986-01-01

    The methods, indications and results of digital subtraction angiography in traumatology are presented, based on 56 examinations. The different use of intravenous or intraarterial DSA will be discussed with respect to expanding and localisation of traumatic vascular injury. DSA is recommended as the method of choice for follow-up after vascular reconstructive procedure. (orig.) [de

  17. Self-expanding/shrinking structures by 4D printing

    Science.gov (United States)

    Bodaghi, M.; Damanpack, A. R.; Liao, W. H.

    2016-10-01

    The aim of this paper is to create adaptive structures capable of self-expanding and self-shrinking by means of four-dimensional printing technology. An actuator unit is designed and fabricated directly by printing fibers of shape memory polymers (SMPs) in flexible beams with different arrangements. Experiments are conducted to determine thermo-mechanical material properties of the fabricated part revealing that the printing process introduced a strong anisotropy into the printed parts. The feasibility of the actuator unit with self-expanding and self-shrinking features is demonstrated experimentally. A phenomenological constitutive model together with analytical closed-form solutions are developed to replicate thermo-mechanical behaviors of SMPs. Governing equations of equilibrium are developed for printed structures based on the non-linear Green-Lagrange strain tensor and solved implementing a finite element method along with an iterative incremental Newton-Raphson scheme. The material-structural model is then applied to digitally design and print SMP adaptive lattices in planar and tubular shapes comprising a periodic arrangement of SMP actuator units that expand and then recover their original shape automatically. Numerical and experimental results reveal that the proposed planar lattice as meta-materials can be employed for plane actuators with self-expanding/shrinking features or as structural switches providing two different dynamic characteristics. It is also shown that the proposed tubular lattice with a self-expanding/shrinking mechanism can serve as tubular stents and grippers for bio-medical or piping applications.

  18. A digital future for the history of psychology?

    Science.gov (United States)

    Green, Christopher D

    2016-08-01

    This article discusses the role that digital approaches to the history of psychology are likely to play in the near future. A tentative hierarchy of digital methods is proposed. A few examples are briefly described: a digital repository, a simple visualization using ready-made online database and tools, and more complex visualizations requiring the assembly of the database and, possibly, the analytic tools by the researcher. The relationship of digital history to the old "New Economic History" (Cliometrics) is considered. The question of whether digital history and traditional history need be at odds or, instead, might complement each other is woven throughout. The rapidly expanding territory of digital humanistic research outside of psychology is briefly discussed. Finally, the challenging current employment trends in history and the humanities more broadly are considered, along with the role that digital skills might play in mitigating those factors for prospective academic workers. (PsycINFO Database Record (c) 2016 APA, all rights reserved).

  19. Expanding Your Horizon 2015

    CERN Multimedia

    Kaltenhauser, Kristin

    2015-01-01

    Expanding your horizons is a bi-annual “Science Day” for girls aged 11 to 14, held at the University of Geneva on 14 November. The girls had the opportunity to take part in hands-on workshops held by local professional women in the field of science, mathematics, engineering and technology. For the fourth time, CERN was part of this event, offering three workshops as well as a booth at the Discovery Fair, including Higgnite, an interactive visualization of the Higgs Field.

  20. Professional Ethics for Digital Age Psychiatry: Boundaries, Privacy, and Communication.

    Science.gov (United States)

    Sabin, James E; Harland, Jonathan Clark

    2017-09-01

    Internet and social media use continue to expand rapidly. Many patients and psychiatrists are bringing digital technologies into the treatment process, but relatively little attention has been paid to the ethical challenges in doing this. This review presents ethical guidelines for psychiatry in the digital age. Surveys demonstrate that patients are eager to make digital technologies part of their treatment. Substantial numbers search for professional and personal information about their therapists. Attitudes among psychiatrists about using digital technologies with patients range from dread to enthusiastic adoption. Digital technologies create four major ethical challenges for psychiatry: managing clinical boundaries; maintaining privacy and confidentiality; establishing realistic expectations regarding digital communications; and upholding professional ideals. Traditional ethical expectations are valid for the evolving digital arena, but guidance must be adapted for actual application in practice.

  1. Creative Digital Media Practices

    DEFF Research Database (Denmark)

    Frølunde, Lisbeth

    , 2006, 2009), machinima (machine + cinema + anime, real-time animation captured in games etc.), and the digital storytelling movement. A dialogic perspective on the diversity of digital media practices opens up for understanding the complex evolution of language on socio-historical, cultural......The presentation reviews the interplay of dialogic (Bakhtin, 1981) and multimodal theories on media production practices, with attention to visual communication (Kress and van Leeuwen, 2001, 2006). This theoretical approach aids in reflecting on digital media practices as novel (new) sign systems...... develop a collaborative digital storytelling showcase for their own digital stories about Roskilde University. This course is intended to bring up reflections on the wider phenomenon of contemporary media practices, such as: YouTube, DIY (do-it-yourself) filmmaking or homemade, garage cinema (Jenkins...

  2. Elearning and digital publishing

    CERN Document Server

    Ching, Hsianghoo Steve; Mc Naught, Carmel

    2006-01-01

    ""ELearning and Digital Publishing"" will occupy a unique niche in the literature accessed by library and publishing specialists, and by university teachers and planners. It examines the interfaces between the work done by four groups of university staff who have been in the past quite separate from, or only marginally related to, each other - library staff, university teachers, university policy makers, and staff who work in university publishing presses. All four groups are directly and intimately connected with the main functions of universities - the creation, management and dissemination

  3. Using Digital Games to Learn Mathematics – What students think?

    Directory of Open Access Journals (Sweden)

    Su Ting Yong

    2016-06-01

    Full Text Available The aim of this study was to explore how university foundation students perceive the use of digital games in learning mathematics. Data was collected using an online questionnaire and 209 foundation university students participated in this study.  The questionnaire was used to explore students’ gaming experience and students’ attitude towards mathematics learning with digital games.  It was found that most of the university foundation students liked to play different types of digital games.  Males preferred playing digital games in more traditional male genres namely sport, racing, shooter, action adventure, role play and strategy games.  As for females, they generally preferred playing puzzle and simulation games.  Astonishingly, the foundation students were not very positive towards the use of digital games in learning mathematics, and their attitude was essentially influenced by their mathematics interest.  Students with greater interest in mathematics were more likely to support the use of digital games in learning. 

  4. Self-expandable nitinol stent placement in homocysteinemic porcine aorta

    Directory of Open Access Journals (Sweden)

    Luís Henrique Gil França

    2008-01-01

    Full Text Available PURPOSE: To compare aortic intimal thickening of normal and hyperhomocysteinemic pigs (induced with a methionine-rich diet following placement of a self-expanding nitinol stent. METHODS: Eighteen Macau pigs were used. They were older than eight weeks in age and had an average weight of 30 kg. Pigs were randomly divided into two groups. The first, Group C (control, was fed a regular diet, and the second group, Group M, was fed a methionine-rich diet for 30 days to induce hyperhomocysteinemia. The self-expandable nitinol stents were 25mm in length and 8 mm in diameter after expansion. Blood samples were collected to measure total cholesterol, triglycerides, HDL and homocysteine concentrations. All animals were subjected to angiography. Thirty days after the procedure, the animals were sacrificed, and the abdominal aorta was removed for histological and digital morphometry analysis. RESULTS: Under microscopic evaluation, the intima was significantly thicker in Group C than in Group M. When groups were compared by digital morphometric analysis, intimal thickening of the vessel wall was higher in Group C than in Group M. There was no significant change in total cholesterol, triglycerides or HDL concentrations in either group. In group C the levels of plasma homocysteine ranged from 14,40 to 16,73µmol/l; in Group M, plasma homocysteine levels ranged from 17.47 to 59.80 µmol/l after 30 days of a methionine-rich diet. CONCLUSION: Compared to normal pigs, less intimal hyperplasia was observed in the abdominal aortas of hyperhomocysteinemic pigs thirty days after the insertion of a self-expandable nitinol stent.

  5. Journalism and Mass Communication Students at Historically Black Colleges and Universities and Predominantly White Institutions: Saying Goodbye to the Digital Divide

    Science.gov (United States)

    Crawford, Jerry, II

    2013-01-01

    The digital divide has been described as the distance or gap in access to information based on race, ethnicity, income, education and geographical location. This study examined how freshmen and first-semester journalism and mass communications students at five Historically Black Colleges and Universities [HBCUs] have been able to bridge the…

  6. The Global University Press

    Science.gov (United States)

    Dougherty, Peter J.

    2012-01-01

    The modern world's understanding of American university press has long been shaped by university-press books. American university-press books are good international advertisements for the universities whose logos grace their spines. The growth of transnational scholarship and the expansion of digital communications networks are converging in ways…

  7. The Digital Marmor Parium

    OpenAIRE

    Berti, Monica

    2017-01-01

    The Digital Marmor Parium is a project of the Alexander von Humboldt Chair of Digital Humanities at the University of Leipzig (http://www.dh.uni-leipzig.de/wo/dmp). The aim of this work is to produce a new digital edition of the so called Marmor Parium (Parian Marble), which is a Hellenistic chronicle on a marble slab coming from the Greek island of Paros. The importance of the document is due to the fact that it preserves a Greek chronology (1581/80-299/98 BC) with a list of kings and archon...

  8. Decoupling in an expanding universe: backreaction barely constrains short distance effects in the cosmic microwave background

    CERN Document Server

    Greene, B R; Shiu, G; Van der Schaar, J P; Greene, Brian R.; Schalm, Koenraad; Shiu, Gary; Schaar, Jan Pieter van der

    2005-01-01

    We clarify the status of transplanckian effects on the cosmic microwave background (CMB) anisotropy. We do so using the boundary effective action formalism of hep-th/0401164 which accounts quantitatively for the cosmological vacuum ambiguity. In this formalism we can clearly 1) delineate the validity of cosmological effective actions in an expanding universe. The corollary of the initial state ambiguity is the existence of an earliest time. The inability of an effective action to describe physics before this time demands that one sets initial conditions on the earliest time hypersurface. A calculation then shows that CMB anisotropy measurements are generically sensitive to high energy corrections to the initial conditions. 2) We compute the one-loop contribution to the stress-tensor due to high-energy physics corrections to an arbitrary cosmological initial state. We find that phenomenological bounds on the backreaction do not lead to strong constraints on the coefficient of the leading boundary irrelevant op...

  9. The expanding regulatory universe of p53 in gastrointestinal cancer.

    Science.gov (United States)

    Fesler, Andrew; Zhang, Ning; Ju, Jingfang

    2016-01-01

    Tumor suppresser gene TP53 is one of the most frequently deleted or mutated genes in gastrointestinal cancers. As a transcription factor, p53 regulates a number of important protein coding genes to control cell cycle, cell death, DNA damage/repair, stemness, differentiation and other key cellular functions. In addition, p53 is also able to activate the expression of a number of small non-coding microRNAs (miRNAs) through direct binding to the promoter region of these miRNAs.  Many miRNAs have been identified to be potential tumor suppressors by regulating key effecter target mRNAs. Our understanding of the regulatory network of p53 has recently expanded to include long non-coding RNAs (lncRNAs). Like miRNA, lncRNAs have been found to play important roles in cancer biology.  With our increased understanding of the important functions of these non-coding RNAs and their relationship with p53, we are gaining exciting new insights into the biology and function of cells in response to various growth environment changes. In this review we summarize the current understanding of the ever expanding involvement of non-coding RNAs in the p53 regulatory network and its implications for our understanding of gastrointestinal cancer.

  10. On the "Size" of Einstein's Universe

    Directory of Open Access Journals (Sweden)

    Crothers S. J.

    2007-10-01

    Full Text Available It is alleged by the Standard Cosmological Model that Einstein’s Universe is finite but unbounded. Although this is a longstanding and widespread allegation, it is nonetheless incorrect. It is also alleged by this Model that the Universe is expanding and that it began with a Big Bang. These are also longstanding and widespread claims that are demonstrably false. The FRW models for an expanding, finite, unbounded Universe are inconsistent with General Relativity and are therefore invalid.

  11. DSH: Special Issue 'Digital Humanities 2014'

    OpenAIRE

    Terras Melissa; Clivaz Claire; Verhoeven Deb; Kaplan Frédéric

    2015-01-01

    The special issue presents selected proceedings from Digital Humanities 2014. Digital Humanities is the annual conference organized and sponsored by the Alliance of Digital Humanities Organizations (ADHO) and between 7th and 12th July 2014 over 700 attendees gathered for DH2014 at the University of Lausanne and the École polytechnique fédérale de Lausanne Switzerland (http://dh2014.org/): to date this remains the largest ever meeting of Digital Humanities scholars worldwide. Traditionally the...

  12. The Digital Divide among University Freshmen

    Science.gov (United States)

    Ricoy, Carmen; Feliz, Tiberio; Couto, Maria Joao

    2013-01-01

    Use of new technologies in university training is an ongoing reality today. However, the inequalities that exist among university students are the source of an important problem. Such inequalities need to be detected and analyzed and therefore a study of college freshmen can be very valuable. This qualitative study intends to analyze the digital…

  13. Integration of the BBGKY equations for the development of strongly nonlinear clustering in an expanding universe

    International Nuclear Information System (INIS)

    Davis, M.; Peebles, P.J.E.

    1977-01-01

    The evolution of density correlations in an expanding universe can be described by the BBGKY equations. This approach has been the subject of several previous studies, but always under the assumption of small-amplitude fluctuations, where the hierarchy of equations has a natural truncation. Reslts of these studies cannot be compared to the present universe because the galaxy two-point correlation function xi (r) is much greater than unity at r9 or approx. =1h -1 Mpc, and the three-point function zeta is on the order of xi (r) 2 . In this strongly nonlinear situation the hierarchy is dominated by terms ignored in the linear analysis. Our method of truncating the hierarchy is based on the empirical result that zeta can be represented to good accuracy as a simple function of xi. We solve the equations via the velocity-moment method, and we truncate the resulting velocity-moment hierarchy for the two-point function by assuming that the distribution in the relative velocity of particle pairs has zero skewness about the mean. The second equation in this velocity-moment hierarchy is our main equation for xi. It involves the three-point spatial correlation function zeta, which we write as a function of xi following the empirical result. The third equation involves the first velocity moment of the three-point position and velocity correlation function. We model this term in a way consistent with our model for zeta and with a constraint equation that expresses conservation of triplets.The equations admit a similarity transformation if (1) the effects of the discreteness of particles can be ignored, (2) the initial spectrum of density perturbations assumes a power law shape, and (3) the universe is described by an Einstein-de Sitter model (Ωapprox. =1). The numerical results presented here are based on this similarity solution

  14. Aspects of Digital Forensics in South Africa

    Directory of Open Access Journals (Sweden)

    Jacques Ophoff

    2016-10-01

    Full Text Available This paper explores the issues facing digital forensics in South Africa. It examines particular cyber threats and cyber threat levels for South Africa and the challenges in addressing the cybercrimes in the country through digital forensics. The paper paints a picture of the cybercrime threats facing South Africa and argues for the need to develop a skill base in digital forensics in order to counter the threats through detection of cybercrime, by analyzing cybercrime reports, consideration of current legislation, and an analysis of computer forensics course provision in South African universities. The paper argues that there is a need to develop digital forensics skills in South Africa through university programs, in addition to associated training courses. The intention in this paper is to promote debate and discussion in order to identify the cyber threats to South Africa and to encourage the development of a framework to counter the threats – through legislation, high tech law enforcement structures and protocols, digital forensics education, digital forensics skills development, and a public and business awareness of cybercrime threats.

  15. Digital substraction angiography (DSA) in a universal radiodiagnostic room with a novel multi-pulse high-frequency generator

    International Nuclear Information System (INIS)

    Ellegast, H.H.; Kloss, R.; Mayr, H.; Ammann, E.; Kuehnel, W.; Siemens A.G., Erlangen

    1985-01-01

    Application of digital subtraction angiography in a universal radiodiagnostic room can be implemented rapidly and reliably. The number of examinations could be increased without negative effects to conventional operations in this room. At optimum radiation hygiene and high-degree operational safety, the multipulse high-frequency generator with its DSA parameter automatic system guarantees a reproducibly good image quality equalling that of a special DSA facility. In this way, the examination room constitutes an economic solution for small-sized hospitals without any special angiography room, too. (orig.) [de

  16. Expanding the Enzyme Universe: Accessing Non-Natural Reactions by Mechanism-Guided Directed Evolution

    Science.gov (United States)

    Renata, Hans; Wang, Z. Jane

    2015-01-01

    High selectivities and exquisite control over reaction outcomes entice chemists to use biocatalysts in organic synthesis. However, many useful reactions are not accessible because they are not in nature’s known repertoire. We will use this review to outline an evolutionary approach to engineering enzymes to catalyze reactions not found in nature. We begin with examples of how nature has discovered new catalytic functions and how such evolutionary progressions have been recapitulated in the laboratory starting from extant enzymes. We then examine non-native enzyme activities that have been discovered and exploited for chemical synthesis, emphasizing reactions that do not have natural counterparts. The new functions have mechanistic parallels to the native reaction mechanisms that often manifest as catalytic promiscuity and the ability to convert from one function to the other with minimal mutation. We present examples of how non-natural activities have been improved by directed evolution, mimicking the process used by nature to create new catalysts. Examples of new enzyme functions include epoxide opening reactions with non-natural nucleophiles catalyzed by a laboratory-evolved halohydrin dehalogenase, cyclopropanation and other carbene transfer reactions catalyzed by cytochrome P450 variants, and non-natural modes of cyclization by a modified terpene synthase. Lastly, we describe discoveries of non-native catalytic functions that may provide future opportunities for expanding the enzyme universe. PMID:25649694

  17. Why we need to find time for digital humanities: presenting a new partnership model at the University of Sussex

    Directory of Open Access Journals (Sweden)

    Jane Harvell

    2017-11-01

    Full Text Available Recognizing that academic libraries should develop and nurture strong, mutually beneficial relationships with researchers in digital humanities, the authors believe it is strategically important to invest time and resources exploring ideas and partnering with academic colleagues on projects. This approach can provide many unforeseen benefits to both the Library service and to the workforce. The article is based on our experience as Core Associates of the Sussex Humanities Lab at the University of Sussex. It outlines the impact this collaboration has had, including influencing working practices and culture within the Library, involvement in research bids, informing the development of new services, and addressing library questions using digital humanities methods. Most importantly, it exemplifies a new model of the librarian as equal partner in the research process.

  18. Design of the Digital Sky Survey DA and online system: A case history in the use of computer aided tools for data acquisition system design

    Science.gov (United States)

    Petravick, D.; Berman, E.; Nicinski, T.; Rechenmacher, R.; Oleynik, G.; Pordes, R.; Stoughton, C.

    1991-06-01

    As part of its expanding Astrophysics program, Fermilab is participating in the Digital Sky Survey (DSS). Fermilab is part of a collaboration involving University of Chicago, Princeton University, and the Institute of Advanced Studies (at Princeton). The DSS main results will be a photometric imaging survey and a redshift survey of galaxies and color-selected quasars over pi steradians of the Northern Galactic Cap. This paper focuses on our use of Computer Aided Software Engineering (CASE) in specifying the data system for DSS. Extensions to standard methodologies were necessary to compensate for tool shortcomings and to improve communication amongst the collaboration members. One such important extension was the incorporation of CASE information into the specification document.

  19. Expanding temporal and participative digital horizons through web documentaries for social change

    OpenAIRE

    Sora, Carles

    2017-01-01

    Recent forays into online and participatory social documentaries like QuestionBridge or Immigrant Nation are offering alternative temporal conceptions and participative processes compared to what other media activism does using social networks. These projects propose reiterative dialogues, where media time consumptions expand and differ from Internet standards, fostering long-term temporal horizons. Starting with the timescapes conceptual framework as a theoretical background, ...

  20. Digital Scholarly Publishing and Archiving Services by Academic Libraries: Case Study of the University of Patras

    Directory of Open Access Journals (Sweden)

    Panos Georgiou

    2010-09-01

    Full Text Available During the last years, dramatic changes in the electronic publishing landscape have created new roles and changed the traditional ones. Presently, some libraries have capitalised on their experience and knowledge in information technology and electronic publishing to undertake such activities, while at the same time they spearhead the campaign for Open Access spreading within academic communities. The Library & Information Centre (LIC of the University of Patras (UoP, Greece, has been playing an active role in promoting Open Access (OA in Greece. Since 2007, LIC has been experimenting with OA publishing practices and tools within the framework of various R&D projects. Two of the major results of these efforts are the ‘Pasithee’ e-publishing platform and the ‘Dexamene’ digital archive for Greek scholarly journals. Both platforms are based on OJS-Open Journal Systems e-publishing software. The two facilities were appropriately modified to meet the LIC’s publishing and archiving requirements respectively. Currently two journals are being hosted on each platform and all four are from the Humanities. The LIC is negotiating with more publishers and editorial teams to host their journals. In this article we focus on: - technical and managerial key issues of the development and operation phases, - services and procedures, - the business model, - technological, procedural and legal issues and problems that were encountered when working together with publishers, editors and authors, and - future plans for improving and upgrading our e-publishing services into an integrated institutional platform to cover all kinds of publications and data types (monographs, conference proceedings, teaching material, bulletins, magazines etc.. The article concludes with a succinct presentation of the Directory of Greek Digital Resources, a pilot infrastructure developed by the LIC which indexes and presents digital publishing initiatives in Greece and aims to

  1. Social Media Contribution to the Promotion of Digital Citizenship among Female Students at Imam Mohammed bin Saud Islamic University in Riyadh

    Science.gov (United States)

    Alharbi, Wafa Owaydhah; Alturki, Khaled Ibrahim

    2018-01-01

    The study aimed to identify the degree of social media contribution to reinforcing digital citizenship meaning from the viewpoint of female students at Imam Mohammed bin Saud Islamic University in Riyadh. The study was an attempt to answer the following two questions in order to achieve the objectives of the study: To which extent does SnapChat…

  2. Massive Fermi gas in the expanding universe

    Energy Technology Data Exchange (ETDEWEB)

    Trautner, Andreas, E-mail: atrautner@uni-bonn.de [Bethe Center for Theoretical Physics and Physikalisches Institut der Universität Bonn, Nussallee 12, 53115 Bonn (Germany)

    2017-03-01

    The behavior of a decoupled ideal Fermi gas in a homogeneously expanding three-dimensional volume is investigated, starting from an equilibrium spectrum. In case the gas is massless and/or completely degenerate, the spectrum of the gas can be described by an effective temperature and/or an effective chemical potential, both of which scale down with the volume expansion. In contrast, the spectrum of a decoupled massive and non-degenerate gas can only be described by an effective temperature if there are strong enough self-interactions such as to maintain an equilibrium distribution. Assuming perpetual equilibration, we study a decoupled gas which is relativistic at decoupling and then is red-shifted until it becomes non-relativistic. We find expressions for the effective temperature and effective chemical potential which allow us to calculate the final spectrum for arbitrary initial conditions. This calculation is enabled by a new expansion of the Fermi-Dirac integral, which is for our purpose superior to the well-known Sommerfeld expansion. We also compute the behavior of the phase space density under expansion and compare it to the case of real temperature and real chemical potential. Using our results for the degenerate case, we also obtain the mean relic velocity of the recently proposed non-thermal cosmic neutrino background.

  3. Time-Interleaved Analog to Digital Converters

    NARCIS (Netherlands)

    Louwsma, S.M.; van Tuijl, Adrianus Johannes Maria; Nauta, Bram

    2010-01-01

    This book describes the research carried out by our PhD student Simon Louwsma at the University of Twente, The Netherlands in the field of high-speed Analogto- Digital (AD) converters. AD converters are crucial circuits for modern systems where information is stored or processed in digital form. Due

  4. Ramón Reichert and Annika Richterich, eds., Digital Material/ism Vol. 1, Issue 1 – Digital Culture and Society

    OpenAIRE

    Pournara, Lizzy

    2017-01-01

    Ramón Reichert and Annika Richterich, eds., Digital Material/ism Vol. 1, Issue 1 – Digital Culture and Society Bielefeld: [transcript] Verlag, 2015. ISBN 978-3-8376-3153-1. Lizzy Pournara Aristotle University of Thessaloniki The issue Digital Material/ism edited by Ramón Reichert and Annika Richterich inaugurates the first volume of the journal Digital Culture & Society. The significance of this volume’s work lies in its attempt to redress the concept of materiality in digital environments an...

  5. The establishment phases of ETD program in a brand new University

    KAUST Repository

    Baessa, Mohamed A.; Vijayakumar, J.K.

    2014-01-01

    For many Universities, ETD is a combination of digitized documents and digitally born documents. But at brand new Universities like King Abdullah University of Science and Technology (KAUST), or more specifically for the libraries that born

  6. The Scholarly Communication Process within the University Research Corridor (Michigan State University, the University of Michigan, and Wayne State University): A Case Study in Cooperation

    Science.gov (United States)

    Utter, Timothy; Holley, Robert P.

    2009-01-01

    The growth of open access publishing, the development of institutional repositories, and the availability of millions of digitized monographs and journals are rapidly changing scholarly communication. This case study looks at the current and possible uses of these tools by Michigan's three largest universities: Michigan State University, the…

  7. Promoting universal financial protection: contracting faith-based health facilities to expand access--lessons learned from Malawi.

    Science.gov (United States)

    Chirwa, Maureen L; Kazanga, Isabel; Faedo, Giulia; Thomas, Stephen

    2013-08-19

    Public-private collaborations are increasingly being utilized to universalize health care. In Malawi, the Ministry of Health contracts selected health facilities owned by the main faith-based provider, the Christian Health Association of Malawi (CHAM), to deliver care at no fee to the most vulnerable and underserved populations in the country through Service Level Agreements (SLAs). This study examined the features of SLAs and their effectiveness in expanding universal coverage. The study involved a policy analysis focusing on key stakeholders around SLAs as well as a case study approach to analyse how design and implementation of SLAs affect efficiency, equity and sustainability of services delivered by SLAs. The study employed both qualitative and quantitative research methods to address the research questions and was conducted in five CHAM health facilities: Mulanje Mission, Holy Family, and Mtengowanthenga Hospitals, and Mabiri and Nkope Health Centres. National and district level decision makers were interviewed while providers and clients associated with the health facilities were surveyed on their experiences. A total of 155 clients from an expected 175 were recruited in the study. The study findings revealed key aspects of how SLAs were operating, the extent to which their objectives were being attained and why. In general, the findings demonstrated that SLAs had the potential to improve health and universal health care coverage, particularly for the vulnerable and underserved populations. However, the findings show that the performance of SLAs in Malawi were affected by various factors including lack of clear guidelines, non-revised prices, late payment of bills, lack of transparency, poor communication, inadequate human and material resources, and lack of systems to monitor performance of SLAs, amongst others. There was strong consensus and shared interest between the government and CHAM regarding SLAs. It was clear that free services provided by SLAs had

  8. Road Tripping down the Digital Preservation Highway, Part I: Hitting the Road

    Science.gov (United States)

    Colati, Jessica Branco; Colati, Gregory C.

    2011-01-01

    In this inaugural column, the authors introduce Peter Palmer, erstwhile librarian at Bellaluna University who is being tasked with managing the library's and university's digital content as he begins his journey down the Digital Highway. As head of access services at Bellaluna University, Peter had been, by default, made responsible for managing…

  9. ExpandED Options: Learning beyond High School Walls

    Science.gov (United States)

    ExpandED Schools, 2014

    2014-01-01

    Through ExpandED Options by TASC, New York City high school students get academic credit for learning career-related skills that lead to paid summer jobs. Too many high school students--including those most likely to drop out--are bored or see classroom learning as irrelevant. ExpandED Options students live the connection between mastering new…

  10. Seamless lesion insertion in digital mammography: methodology and reader study

    Science.gov (United States)

    Pezeshk, Aria; Petrick, Nicholas; Sahiner, Berkman

    2016-03-01

    Collection of large repositories of clinical images containing verified cancer locations is costly and time consuming due to difficulties associated with both the accumulation of data and establishment of the ground truth. This problem poses a significant challenge to the development of machine learning algorithms that require large amounts of data to properly train and avoid overfitting. In this paper we expand the methods in our previous publications by making several modifications that significantly increase the speed of our insertion algorithms, thereby allowing them to be used for inserting lesions that are much larger in size. These algorithms have been incorporated into an image composition tool that we have made publicly available. This tool allows users to modify or supplement existing datasets by seamlessly inserting a real breast mass or micro-calcification cluster extracted from a source digital mammogram into a different location on another mammogram. We demonstrate examples of the performance of this tool on clinical cases taken from the University of South Florida Digital Database for Screening Mammography (DDSM). Finally, we report the results of a reader study evaluating the realism of inserted lesions compared to clinical lesions. Analysis of the radiologist scores in the study using receiver operating characteristic (ROC) methodology indicates that inserted lesions cannot be reliably distinguished from clinical lesions.

  11. Digital Amsterdam : Digital Art and Public Space in Amsterdam

    NARCIS (Netherlands)

    Cnossen, Boukje; Franssen, Thomas; De Wilde, Mandy

    2015-01-01

    In this report we explore digital art interventions in public space in Amsterdam as part of the ‘participatory public space’ project lead by the University of Melbourne. We focus specifically on artistic interventions in public space, rather than on the more general ways in which public space is

  12. Linguistics and the digital humanities

    DEFF Research Database (Denmark)

    Jensen, Kim Ebensgaard

    2014-01-01

    Corpus linguistics has been closely intertwined with digital technology since the introduction of university computer mainframes in the 1960s. Making use of both digitized data in the form of the language corpus and computational methods of analysis involving concordancers and statistics software......, corpus linguistics arguably has a place in the digital humanities. Still, it remains obscure and figures only sporadically in the literature on the digital humanities. This article provides an overview of the main principles of corpus linguistics and the role of computer technology in relation to data...... and method and also offers a bird's-eye view of the history of corpus linguistics with a focus on its intimate relationship with digital technology and how digital technology has impacted the very core of corpus linguistics and shaped the identity of the corpus linguist. Ultimately, the article is oriented...

  13. How Digital Native Learners Describe Themselves

    Science.gov (United States)

    Thompson, Penny

    2015-01-01

    Eight university students from the "digital native" generation were interviewed about the connections they saw between technology use and learning, and also their reactions to the popular press claims about their generation. Themes that emerged from the interviews were coded to show patterns in how digital natives describe themselves.…

  14. Expanding Library Support of Faculty Research: Exploring Readiness

    Science.gov (United States)

    Brown, Jeanne M.; Tucker, Cory

    2013-01-01

    The changing research and information environment requires a reexamination of library support for research. This study considers research-related attitudes and practices to identify elements indicating readiness or resistance to expanding the library's role in research support. A survey of faculty conducted at the University of Nevada Las Vegas…

  15. Black holes in an expanding universe and supersymmetry

    Directory of Open Access Journals (Sweden)

    Dietmar Klemm

    2016-02-01

    Full Text Available This paper analyzes the supersymmetric solutions to five and six-dimensional minimal (ungauged supergravities for which the bilinear Killing vector constructed from the Killing spinor is null. We focus on the spacetimes which admit an additional SO(1,1 boost symmetry. Upon the toroidal dimensional reduction along the Killing vector corresponding to the boost, we show that the solution in the ungauged case describes a charged, nonextremal black hole in a Friedmann–Lemaître–Robertson–Walker (FLRW universe with an expansion driven by a massless scalar field. For the gauged case, the solution corresponds to a charged, nonextremal black hole embedded conformally into a Kantowski–Sachs universe. It turns out that these dimensional reductions break supersymmetry since the bilinear Killing vector and the Killing vector corresponding to the boost fail to commute. This represents a new mechanism of supersymmetry breaking that has not been considered in the literature before.

  16. Library performance measurement in the digital age

    OpenAIRE

    Conyers, A.; Payne, Philip

    2011-01-01

    Book synopsis: University libraries around the world have embraced the possibilities of the digital learning environment, facilitating its use and proactively seeking to develop the provision of electronic resources and services. The digital environment offers opportunities and challenges for librarians in all aspects of their work - in information literacy, virtual reference, institutional repositories, e-learning, managing digital resources and social media. The authors in this timely book ...

  17. Digital Social Network Mining for Topic Discovery

    Science.gov (United States)

    Moradianzadeh, Pooya; Mohi, Maryam; Sadighi Moshkenani, Mohsen

    Networked computers are expanding more and more around the world, and digital social networks becoming of great importance for many people's work and leisure. This paper mainly focused on discovering the topic of exchanging information in digital social network. In brief, our method is to use a hierarchical dictionary of related topics and words that mapped to a graph. Then, with comparing the extracted keywords from the context of social network with graph nodes, probability of relation between context and desired topics will be computed. This model can be used in many applications such as advertising, viral marketing and high-risk group detection.

  18. Emergence of oscillons in an expanding background

    International Nuclear Information System (INIS)

    Farhi, E.; Guth, A. H.; Iqbal, N.; Graham, N.; Rosales, R. R.; Stamatopoulos, N.

    2008-01-01

    We consider a (1+1) dimensional scalar field theory that supports oscillons, which are localized, oscillatory, stable solutions to nonlinear equations of motion. We study this theory in an expanding background and show that oscillons now lose energy, but at a rate that is exponentially small when the expansion rate is slow. We also show numerically that a universe that starts with (almost) thermal initial conditions will cool to a final state where a significant fraction of the energy of the universe--on the order of 50%--is stored in oscillons. If this phenomenon persists in realistic models, oscillons may have cosmological consequences.

  19. Reconfigurable Mixed Mode Universal Filter

    Directory of Open Access Journals (Sweden)

    Neelofer Afzal

    2014-01-01

    Full Text Available This paper presents a novel mixed mode universal filter configuration capable of working in voltage and transimpedance mode. The proposed single filter configuration can be reconfigured digitally to realize all the five second order filter functions (types at single output port. Other salient features of proposed configuration include independently programmable filter parameters, full cascadability, and low sensitivity figure. However, all these features are provided at the cost of quite large number of active elements. It needs three digitally programmable current feedback amplifiers and three digitally programmable current conveyors. Use of six active elements is justified by introducing three additional reduced hardware mixed mode universal filter configurations and its comparison with reported filters.

  20. Programmable Digital Controller

    Science.gov (United States)

    Wassick, Gregory J.

    2012-01-01

    An existing three-channel analog servo loop controller has been redesigned for piezoelectric-transducer-based (PZT-based) etalon control applications to a digital servo loop controller. This change offers several improvements over the previous analog controller, including software control over proportional-integral-derivative (PID) parameters, inclusion of other data of interest such as temperature and pressure in the control laws, improved ability to compensate for PZT hysteresis and mechanical mount fluctuations, ability to provide pre-programmed scanning and stepping routines, improved user interface, expanded data acquisition, and reduced size, weight, and power.

  1. Gravitational Collapse of Massless Fields in an Expanding Universe

    Directory of Open Access Journals (Sweden)

    Yoo Chul-Moon

    2018-01-01

    Full Text Available Gravitational collapse of a massless scalar field with the periodic boundary condition in a cubic box is reported. This system can be regarded as a lattice universe model. The initial data is constructed for a Gaussian like profile of the scalar field taking the integrability condition associated with the periodic boundary condition into account. For a large initial amplitude, a black hole is formed after a certain period of time. While the scalar field spreads out in the whole region for a small initial amplitude. The difference of the late time expansion law of the lattice universe depending on the final fate of the gravitational collapse is discussed.

  2. Book Review: The Basics of Digital Forensics: The Primer for Getting Started in Digital Forensics

    Directory of Open Access Journals (Sweden)

    Stephen Larson

    2014-03-01

    Full Text Available Sammons, John. (2012. The Basics of Digital Forensics: The Primer for Getting Started in Digital Forensics. Waltham, MA: Syngress, 208 pages, Print Book ISBN: 9781597496612.eBook ISBN : 9781597496629. Print: US $29.95. eBook: US$20.97. Includes exercises, case studies, references, and index.Reviewed by Stephen Larson, PhD. Assistant Professor, Slippery Rock University of PAThe Basics of Digital Forensics: The Primer for Getting Started in Digital Forensics is well-named–it really is very basic. And it should be, as the book’s intended audience includes entry-level digital forensics professionals and complimentary fields such as law enforcement, legal, and general information security. Though the copyright is 2012, some of the data is from 2009, and there is mention of estimates for 2010.(see PDF for full review

  3. Visualizing Breath using Digital Holography

    Science.gov (United States)

    Hobson, P. R.; Reid, I. D.; Wilton, J. B.

    2013-02-01

    Artist Jayne Wilton and physicists Peter Hobson and Ivan Reid of Brunel University are collaborating at Brunel University on a project which aims to use a range of techniques to make visible the normally invisible dynamics of the breath and the verbal and non-verbal communication it facilitates. The breath is a source of a wide range of chemical, auditory and physical exchanges with the direct environment. Digital Holography is being investigated to enable a visually stimulating articulation of the physical trajectory of the breath as it leaves the mouth. Initial findings of this research are presented. Real time digital hologram replay allows the audience to move through holographs of breath-born particles.

  4. Preservice Teachers and Self-Assessing Digital Competence

    Science.gov (United States)

    Maderick, Joseph A.; Zhang, Shaoan; Hartley, Kendall; Marchand, Gwen

    2016-01-01

    This study compares matched surveys of subjective self-assessment and objective assessment on seven domains of digital competence for preservice teachers at a large Southwest public university. The results, consistent with earlier studies, confirm that the participating preservice teachers inaccurately self-assessed their digital competence. The…

  5. Digital Collections Are a Sprint, Not a Marathon: Adapting Scrum Project Management Techniques to Library Digital Initiatives

    Directory of Open Access Journals (Sweden)

    Michael Dulock

    2015-12-01

    Full Text Available This article describes a case study in which a small team from the digital initiatives group and metadata services department at the University of Colorado Boulder (CU-Boulder Libraries conducted a pilot of the Scrum project management framework. The pilot team organized digital initiatives work into short, fixed intervals called sprints—a key component of Scrum. Over a year of working in the modified framework yielded significant improvements to digital collection work, including increased production of digital objects and surrogate records, accelerated publication of digital collections, and an increase in the number of concurrent projects. Adoption of sprints has improved communication and cooperation among participants, reinforced teamwork, and enhanced their ability to adapt to shifting priorities.

  6. Digital data monitoring display and logging

    International Nuclear Information System (INIS)

    Ficaro, E.P.; Wehe, D.K.

    1987-01-01

    A digital data acquisition system for monitoring plant variables has been designed and implemented at the University of Michigan's Ford Nuclear Reactor (FNR), a 2 Megawatt, open-pool, research reactor. The digital data provided by this system is useful for: closed loop control, real time experimental calculations, advanced simulation-as-knowledge techniques, improved operator training, and expert system applications. The purpose of this paper is to discuss the transition to the digital data world and the anticipated applications and benefits

  7. Inside the Digital Revolution

    OpenAIRE

    Brooke, H.

    2016-01-01

    Technology and transparency combined to create the digital revolution, which in turn has ushered in a new form of monitory democracy. Communicative abun-dance and global interconnection mean the democratic franchise can expand and deepen, but the author argues that it matters who is made transparent and for what purpose. Content and context matter. Technology and transparency can be used to strengthen democracy by opening up government to citizens, but the same tools can also be used by the s...

  8. Universal service policy in Vietnam

    DEFF Research Database (Denmark)

    Do Manh, Thai; Falch, Morten; Von Salakpi, Simeon

    2016-01-01

    Universal service provision is a key to bridge the digital divide. This paper provides an empirical examination of the Vietnamese universal policy introduced in 2015 for implementation up to 2020. Using the framework of King et al. (1994) the paper analyses the universal services policy in Vietna...

  9. Digital echocardiography and telemedicine applications in pediatric cardiology.

    Science.gov (United States)

    Sable, Craig

    2002-01-01

    Digital echocardiography offers several advantages over videotape, including easy review, comparison, storage, postprocessing, and sharing of studies, quantitative analysis, and superior resolution. Newer echocardiography systems can write digital data to computer hardware, whereas older systems require digitization of analog data. Clinical and digital data compression is required to reduce study size. Clinical compression has been validated in several adult studies and one pediatric study. JPEG and MPEG digital compression ratios of 26:1 and 200:1, respectively, approximate S-videotape quality. JPEG is the DICOM 3.0 standard and is ideal for short loops, serial comparisons, and quantitative analysis. MPEG (the motion picture standard) lends itself to digitization of video streams and may be more attractive to pediatric cardiologists. Options for data storage and transfer range from limited local review to multiple offline review stations linked by a wide-area network. Telemedicine expands the capabilities of digital echocardiography in a "store and forward" or "real-time" format. Real-time neonatal telecardiology is accurate, impacts patient care, is cost-effective, and does not increase utilization. Cost, increased reliance on sonographers' skills, lack of accepted standards, and legal, licensure, and billing issues are obstacles to widespread acceptance of digital echocardiography and telemedicine.

  10. Rhodes University

    African Journals Online (AJOL)

    Samridhi Sharma

    2013-10-29

    Oct 29, 2013 ... been taken may improve the reception, by the target audience, of the intended communication. This may ... alcohol marketing. Similarly .... of the intended users (Rhodes University support staff ..... Digital Human Modeling and.

  11. The long-term preservation of the digital heritage: the case of universities institutional repositories

    Directory of Open Access Journals (Sweden)

    Luciana Duranti

    2010-03-01

    Full Text Available L'articolo affronta le tematiche legate ai problemi della conservazione a lungo termine del contenuto degli archivi digitali. Il materiale d'archivio richiede un'attenzione speciale ad aspetti quali la credibilità, il valore giuridico, i diritti morali e legali e la privacy. La necessità di assicurare accessibilità e integrità ai dati informatici è tuttavia una problematica che attraversa tutti i campi dell'informatizzazione ed è strettamente legata a fattori come la frequente duplicazione e la corretta scelta dei metadadi. Attraverso l'analisi del caso di studio rappresentato da cIRcle, l'istitutional digital repository della University of British Columbia (UBC, il contributo mostra problemi, rischi e soluzioni utili nella gestione di un archivio digitale, mostrando che l'esperienza degli archivisti può essere utile per sviluppare sistemi legati a depositi di informazione non prettamente archivistici.

  12. Cultura digital y memoria en red

    Directory of Open Access Journals (Sweden)

    Echeverría, Javier

    2009-06-01

    Full Text Available The technological system ICT (Information and Communication Technologies generates the electronic space, digital objects and a distributed memory. The development of the Information Society carries out the problem of preservation of digital memory, and mainly of objects “born digital”, which only exist on line. This paper analyses the principles promoted by the UNESCO in its Charter for the Preservation of Digital Heritage (2003 and states that public heritage should be preserved using free software, in order to provide an open and universal access to those new cultural goods. The problem of the sustainability of digital heritage is also analysed, because of the strong rhythm of technological change of the system ICT. That problem implies a new modality of digital divide, the mnemonic divide.El sistema tecnológico TIC (tecnologías de la información y la comunicación genera el espacio electrónico, los objetos digitales y una memoria distribuida. El desarrollo en la sociedad de la información implica el problema estructural de preservar esa memoria digital, en particular los objetos “de origen digital”, que sólo existen en red. Se analizan los principios promovidos por la UNESCO en su carta para la preservación de la memoria digital (2003 y se afirma que el patrimonio público debería ser conservado en software libre, garantizando el acceso abierto y universal a esos nuevos bienes culturales. Asimismo se analiza el problema de la sostenibilidad del patrimonio digital, que corre el riesgo de desaparecer a causa del veloz ritmo de cambio tecnológico del sistema TIC. Ello da lugar a una nueva modalidad de brecha digital, la brecha mnemónica.

  13. Homogeneous cosmology with aggressively expanding civilizations

    International Nuclear Information System (INIS)

    Jay Olson, S

    2015-01-01

    In the context of a homogeneous Universe, we note that the appearance of aggressively expanding advanced life is geometrically similar to the process of nucleation and bubble growth in a first-order cosmological phase transition. We exploit this similarity to describe the dynamics of life saturating the Universe on a cosmic scale, adapting the phase transition model to incorporate probability distributions of expansion and resource consumption strategies. Through a series of numerical solutions spanning several orders of magnitude in the input assumption parameters, the resulting cosmological model is used to address basic questions related to the intergalactic spreading of life, dealing with issues such as timescales, observability, competition between strategies, and first-mover advantage. Finally, we examine physical effects on the Universe itself, such as reheating and the backreaction on the evolution of the scale factor, if such life is able to control and convert a significant fraction of the available pressureless matter into radiation. We conclude that the existence of life, if certain advanced technologies are practical, could have a significant influence on the future large-scale evolution of the Universe. (paper)

  14. Qualitative analysis of homogeneous universes

    International Nuclear Information System (INIS)

    Novello, M.; Araujo, R.A.

    1980-01-01

    The qualitative behaviour of cosmological models is investigated in two cases: Homogeneous and isotropic Universes containing viscous fluids in a stokesian non-linear regime; Rotating expanding universes in a state which matter is off thermal equilibrium. (Author) [pt

  15. Digital radiology. Clinical experience

    Energy Technology Data Exchange (ETDEWEB)

    Stacul, F; Smathers, R L

    1985-01-01

    The authors report the experience achieved ad the Stanford University (USA) with a digital radiography system which allows the digitization of the film and of the images collected with photostimulable phophors. The phophor is essentially an intensifying screen where a latent image is stored after exposure to X-rays and is extracted by a laser scanning. The images collected with the digitized film and with the phophor (chest, breast, bone) have been analyzed. The digitized film offers potential diagnostic advantages over the conventional film, because of the contrast manipulation and many other processing options. The possibility to recover the information of overexposed films appears very attractive. The photostimulable phophors allow to get good quality images, with a consistent reduction of dose and costs. These plates offer the possibility, in the next future, to replace the conventional screen-film systems.

  16. Expanded cardiac rehabilitation in socially vulnerable patients with myocardial infarction

    DEFF Research Database (Denmark)

    Hald, Kathrine; Nielsen, Kirsten Melgaard; Nielsen, Claus Vinther

    2018-01-01

    OBJECTIVE: Cardiac rehabilitation (CR) has been shown to reduce cardiovascular risk. A research project performed at a university hospital in Denmark offered an expanded CR intervention to socially vulnerable patients. One-year follow-up showed significant improvements concerning medicine...

  17. Accessible Geoscience - Digital Fieldwork

    Science.gov (United States)

    Meara, Rhian

    2017-04-01

    Accessible Geoscience is a developing field of pedagogic research aimed at widening participation in Geography, Earth and Environmental Science (GEES) subjects. These subjects are often less commonly associated with disabilities, ethnic minorities, low income socio-economic groups and females. While advancements and improvements have been made in the inclusivity of these subject areas in recent years, access and participation of disabled students remains low. While universities are legally obligated to provide reasonable adjustments to ensure accessibility, the assumed incompatibility of GEES subjects and disability often deters students from applying to study these courses at a university level. Instead of making reasonable adjustments if and when they are needed, universities should be aiming to develop teaching materials, spaces and opportunities which are accessible to all, which in turn will allow all groups to participate in the GEES subjects. With this in mind, the Swansea Geography Department wish to enhance the accessibility of our undergraduate degree by developing digital field work opportunities. In the first instance, we intend to digitise three afternoon excursions which are run as part of a 1st year undergraduate module. Each of the field trips will be digitized into English- and Welsh-medium formats. In addition, each field trip will be digitized into British Sign Language (BSL) to allow for accessibility for D/deaf and hard of hearing students. Subtitles will also be made available in each version. While the main focus of this work is to provide accessible fieldwork opportunities for students with disabilities, this work also has additional benefits. Students within the Geography Department will be able to revisit the field trips, to revise and complete associated coursework. The use of digitized field work should not replace opportunities for real field work, but its use by the full cohort of students will begin to "normalize" accessible field

  18. MATHEMATICAL-Universe-Hypothesis(MUH) BECOME SCENARIO(MUS)!!! (NOT YET A THEORY) VIA 10-DIGITS[ 0 --> 9] SEPHIROT CREATION AUTOMATICALLY from DIGITS AVERAGED-PROBABILITY Newcomb-Benford LOG-Law; UTTER-SIMPLICITY!!!: It's a Jack-in-the-Box Universe: Accidental?/Purposeful?; EMET/TRUTH!!!

    Science.gov (United States)

    Siegel, Edward Carl-Ludwig

    2015-04-01

    Siegel(2012) 10-DIGITS[0 --> 9] AVERAGE PROBABILITY LOG-Law SCALE-INVARIANCE UTTER-SIMPLICITY: Kabbala SEPHIROT SCENARIO AUTOMATICALLY CREATES a UNIVERSE: (1) a big-bang[bosons(BEQS) created from Newcomb[Am.J.Math.4(1),39(1881;THE discovery of the QUANTUM!!!)-Poincare[Calcul des Probabilites,313(12)]-Weyl[Goett.Nach.(14);Math.Ann.77,313(16)] DIGITS AVERAGE STATISTICS LOG-Law[ = log(1 +1/d) = log([d +1]/d)] algebraic-inversion, (2)[initial (at first space-time point created) c = ∞ elongating to timelike-pencil spreading into finite-c light-cone] hidden-dark-energy (HDE)[forming at every-spacetime-point], (3) inflation[logarithm algebraic-inversion-to exponential], (4) hidden[in Siegel(87) ``COMPLEX quantum-statistics in (Nottale-Linde)FRACTAL-dimensions'' expansion around unit-circle/roots-of-unity]-dark-matter(HDM), (4)null massless bosons(E) --> Mellin-(light-speed squared)-transform/Englert-Higgs ``mechanism'' -->(timelike) massive fermions(m), (5) cosmic-microwave-background (CMB)[power-spectrum] Zipf-law HYPERBOLICITY, (6) supersymmetry(SUSY) [projective-geometry conic-sections/conics merging in R/ C projective-plane point at ∞]. UTTER-SIMPLICITY!!!

  19. Propagators for a scalar field in a homogeneous expanding universe, 1

    International Nuclear Information System (INIS)

    Nariai, Hidekazu; Tanabe, Kenji.

    1975-11-01

    In view of a recent interest in the quantum field-theoretical creation of particles in a big-bang universe (which, via the problem how their vacuum state should be defined, will be connected with their propagators whose structure depends also on that of the universe), our previous formulae for bi-scalar Green's functions corresponding to a massless scalar field in the radiation- and matter-dominated stages of the Friedmann universe with flat 3-space are extended in a classical level. One is to derive the formulae for a massive scalar field in the same universe, and another lies in deriving the ones applicable to the respective stages of a closed universe with spherical topology. As an application, we discuss a massless scalar field (e.g., photons or gravitons defined suitably) and its physical property in the cases where its source distribution is spatially uniform and where that is of a delta-singularity. It is shown that the energy-momentum tensor in the first case is formally the same as a perfect fluid whose sound velocity relative to the light velocity is unity, while the tensor in the second case leads naturally to Robertson's formula for the apparent luminosity of a receding galaxy. The behavior of photons or gravitons generated from a turbulent medium in an early universe is also dealt with. (auth.)

  20. The digital environment in men's sexual disorders

    DEFF Research Database (Denmark)

    García-Cruz, E; Romero-Otero, J; Fode, M

    2018-01-01

    CONTEXT: The revolution of digital technologies constitutes a new setting for the patient-physician relationship and provides patients with a scenario of privacy and universal access to a vast amount of information. However, there is little information on how digital resources are used and what...... their advantages and disadvantages are. OBJECTIVES: To explore the scope of the scientific research on the use of digital technology related to men's sexual disorders and to analyze the primary sources of digital information related to this field. ACQUISITION OF EVIDENCE: Systematic searches of the scientific...... to predefined indicators. SYNTHESIS OF EVIDENCE: The qualitative analysis of the scientific literature included 116 manuscripts; 47% were clinical studies based on online survey, 9% dealt with digital treatments, 11% with quality/safety of digital healthcare environment, 3% with digital activity, 21...

  1. Expanding the Universe of "Astronomy on Tap" Public Outreach Events

    Science.gov (United States)

    Rice, Emily L.; Levine, Brian; Livermore, Rachael C.; Silverman, Jeffrey M.; LaMassa, Stephanie M.; Tyndall, Amy; Muna, Demitri; Garofali, Kristen; Morris, Brett; Byler, Nell; Fyhrie, Adalyn; Rehnberg, Morgan; Hart, Quyen N.; Connelly, Jennifer L.; Silvia, Devin W.; Morrison, Sarah J.; Agarwal, Bhaskar; Tremblay, Grant; Schwamb, Megan E.

    2016-01-01

    Astronomy on Tap (AoT, astronomyontap.org) is free public outreach event featuring engaging science presentations in bars, often combined with music, games, and prizes, to encourage a fun, interactive atmosphere. AoT events feature several short astronomy-related presentations primarily by local professional scientists, but also by visiting scientists, students, educators, amatuer astronomers, writers, and artists. Events are held in social venues (bars, coffee shops, art galleries, etc.) in order to bring science directly to the public in a relaxed, informal atmosphere. With this we hope to engage a more diverse audience than typical lectures at academic and cultural institutions and to develop enthusiasm for science among voting, tax-paying adults. The flexible format and content of an AoT event is easy to adapt and expand based on the priorities, resources, and interests of local organizers. The social nature of AoT events provides important professional development and networking opportunities in science communication. Since the first New York City event in April 2013, Astronomy on Tap has expanded to more than ten cities globally, including monthly events in NYC, Austin, Seattle, and Tucson; semi-regular events in Columbus, New Haven, Santiago, Toronto, and Denver; occasional (so far) events in Rochester (NY), Baltimore, Lansing, and Washington, DC; and one-off events in Chicago and Taipei. Several venues regularly attract audiences of over 200 people. We have received media coverage online, in print, and occasionally even on radio and television. In this poster we describe the overarching goals and characteristics of AoT events, distinct adaptations of various locations, resources we have developed, and the methods we use to coordinate among the worldwide local organizers.

  2. La historia del periodismo en el universo digital / The history of journalism in the digital universe

    Directory of Open Access Journals (Sweden)

    Lorena Romero Domínguez

    2011-09-01

    Full Text Available Resumen: La digitalización es, pues, una necesidad ineludible en la actualidad para las instituciones públicas que pretendan poder competir con los proveedores de información en la red y mantener su estatus de instancias privilegiadas en la provisión de conocimiento de las sociedades. De este modo, las instituciones culturales se sienten conminadas a la digitalización de sus fondos, y a considerar esta técnica la panacea de sus problemas en la gestión y difusión de su riqueza documental, por la continua revalorización de esas fuentes que pueden ser empleadas en el ámbito de la enseñanza, del aprendizaje, de la investigación, de la documentación, y en el manejo de la gestión pública de los catálogos de datos. Este trabajo pretende adentrarnos en el campo de estudio del proceso de digitalización de una disciplina tradicional, la historia de la comunicación y del periodismo, su inmersión en el escenario digital, y, más concretamente, en el acercamiento y explotación realizado por los investigadores de los fondos digitales contenidos en las numerosas hemerotecas digitalizadas que están proliferando en Internet.Abstract: Digitisation is therefore an absolute necessity today for public institutions seeking to compete with providers of information on the network and maintain its status as privileged instances in the provision of knowledge societies. This way, cultural institutions feel the need for the digitization of their collections, and to consider this technology a panacea for their problems in the management and dissemination of its wealth of documents, the continued appreciation of the sources that can be used in the field of teaching, learning, research, documentation, and management of the public management of data catalogs. This paper aims to move into the field of study in the digitization process of a traditional discipline, the history of communication and journalism, his immersion in the digital arena and, more

  3. Hawking radiation in the Swiss-cheese universe

    International Nuclear Information System (INIS)

    Saida, Hiromi

    2002-01-01

    The Hawking radiation forms the essential basis of black-hole thermodynamics. Black-hole thermodynamics denotes a good correspondence between black-hole kinematics and the laws of ordinary thermodynamics, but has so far been considered only in an asymptotically flat case. Does such correspondence rely strongly on the feature of gravity vanishing at infinity? In order to resolve this question, extending the Hawking radiation to a case with a dynamical boundary condition like an expanding universe should be considered. Therefore, the Hawking radiation in an expanding universe is discussed in this paper. As a concrete model of a black hole in an expanding universe, we use the 'Swiss-cheese' universe which is a spacetime including a Schwarzschild black hole in the Friedmann-Robertson-Walker universe. Further, for simplicity, our calculation is performed in two dimensions. The resultant spectrum of the Hawking radiation measured by a comoving observer is generally different from a thermal one. We find that the qualitative behaviour of the non-thermal spectrum is of dumping oscillation as a function of the frequency measured by the observer, and that the intensity of the Hawking radiation is enhanced by the presence of a cosmological expansion. It is appropriate to say that a black hole with an asymptotically flat boundary condition stays in a lowest energy thermal equilibrium state, and that once a black hole is put into an expanding universe, it is excited to a non-equilibrium state and emits its mass energy with stronger intensity than a thermal one

  4. Quantum creation of an inflationary Universe

    International Nuclear Information System (INIS)

    Linde, A.D.

    1984-01-01

    The problem of quantum creation of the Universe is discussed. It is shown that the process of quantum creation of the Universe in a wide class on elementary particle theories leads with a high probability to the creation of an exponentially expanding (inflationary) Universe. Universe size after expansion should exceed l approximately 10 28 cm

  5. A situated practice of ethics for participatory visual and digital methods in public health research and practice: a focus on digital storytelling.

    Science.gov (United States)

    Gubrium, Aline C; Hill, Amy L; Flicker, Sarah

    2014-09-01

    This article explores ethical considerations related to participatory visual and digital methods for public health research and practice, through the lens of an approach known as "digital storytelling." We begin by briefly describing the digital storytelling process and its applications to public health research and practice. Next, we explore 6 common challenges: fuzzy boundaries, recruitment and consent to participate, power of shaping, representation and harm, confidentiality, and release of materials. We discuss their complexities and offer some considerations for ethical practice. We hope this article serves as a catalyst for expanded dialogue about the need for high standards of integrity and a situated practice of ethics wherein researchers and practitioners reflexively consider ethical decision-making as part of the ongoing work of public health.

  6. Understanding University Technology Transfer

    Science.gov (United States)

    Association of American Universities, 2011

    2011-01-01

    Federal government agencies provide about $33 billion a year to universities to conduct scientific research. That continuing investment expands human knowledge and helps educate the next generation of science and technology leaders. New discoveries from university research also form the basis for many new products and processes that benefit the…

  7. Student and Faculty Inter-Generational Digital Divide: Fact or Fiction?

    Science.gov (United States)

    Salajan, Florin D.; Schonwetter, Dieter J.; Cleghorn, Blaine M.

    2010-01-01

    This article analyzes the digital native-digital immigrant dichotomy based on the results of a small-scale study conducted at the University of Toronto, Faculty of Dentistry, regarding students' and faculty members' perceptions toward the implementation of digital learning technologies in the curriculum. The first element chosen for measurement…

  8. Adoption of digital safety protection system in Japan

    International Nuclear Information System (INIS)

    Ogiso, Z.

    1998-01-01

    The application of micro-processor-based digital controllers has been widely propagated among various industries in recent years. While in the nuclear power plant industry, the application of them has also been expanding gradually starting from non-safety related systems, taking advantage of their reliability and maintainability over the conventional analog devices. Based on the careful study of the feasibility of digital controllers to the safety protection system, the Tokyo Electric Power Company proposed on May 1989 the adoption of digital controllers to the safety protection system in the Application for Permission of Establishment of Kashiwazaki-Kariwa units 6 and 7 (ABWR-1350Mwe each). MITI, Ministry of International Trade and Industry, the Japanese regulatory body for electric power generating facilities, had approved this application after careful review. This paper describes a series of supporting activities leading to the MITI's approval of the digital safety protection system and the MITI's licensing activities. (author)

  9. Enhanced digital library system that supports sustainable knowledge

    African Journals Online (AJOL)

    Enhanced digital library system that supports sustainable knowledge: A focus ... This research work provides a Web-Based University library, ability to access the ... and generates pins to authorize bonafide students and staff of the University.

  10. Nativos digitales y nuevas tecnologias: implantación en la universidad / Digital natives and new technologies: implementation in the university

    Directory of Open Access Journals (Sweden)

    Patricia Nuñes Gómez

    2011-04-01

    Full Text Available Este articulo se enmarca dentro de la línea de investigación que el gruposocmedia (www.gruposocmedia.es está desarrollando desde hace varios años sobre Nativos Digitales y su relación con las Nuevas Tecnologías. Se trata de investigar cómo construyen realidad Social los jóvenes a través de los servicios y contenidos digitales abiertos. En este artículo se expone la implantación de los conocimientos extraídos de las investigaciones del grupo a las clases prácticas dentro de la universidad durante el curso académico 2009-2010. Se intenta transferir los conocimientos adquiridos en investigación a las clases de la Facultad de Ciencias de la Información de la Universidad Complutense .AbstractThis article is part of the research that gruposocmedia (www.gruposocmedia.es is developed over several years on Digital Natives and their relationship to new technologies. The research focuses on how young people construct social reality through services and open digital content. This article describes the implementation of knowledge from the group research to practical classes in the university during the academic year 2009-2010. Attempting to transfer the knowledge acquired in research classes at the School of Information Sciences at the Complutense University.

  11. Expanding gerontology enrollments: successful results of an innovative outreach program.

    Science.gov (United States)

    Reynolds, Sandra L; Haley, William E; Hyer, Kathryn

    2007-01-01

    As state budget allocations for higher education decrease, "specialty" programs such as gerontology must continually demonstrate their productivity. State and private universities increasingly rely on student credit hours (SCH) or tuition generated, which is making it difficult for many gerontology programs to expand. The School of Aging Studies at the University of South Florida has achieved a 236% increase in annual SCH productivity over the past 5 years by methods including qualifying courses for university liberal arts requirements, and designing and cross-listing interdisciplinary courses. This increased productivity has supported program expansion and led to beneficial outreach to students from diverse majors.

  12. Digital Direct-to-Consumer Advertising: A Perfect Storm of Rapid Evolution and Stagnant Regulation; Comment on “Trouble Spots in Online Direct-to-Consumer Prescription Drug Promotion: A Content Analysis of FDA Warning Letters”

    OpenAIRE

    Tim K. Mackey

    2016-01-01

    The adoption and use of digital forms of direct-to-consumer advertising (also known as "eDTCA") is on the rise. At the same time, the universe of eDTCA is expanding, as technology on Internet-based platforms continues to evolve, from static websites, to social media, and nearly ubiquitous use of mobile devices. However, little is known about how this unique form of pharmaceutical marketing impacts consumer behavior, public health, and overall healthcare utilization. The study by Kim analyzing...

  13. The big bang as a result of the first-order phase transition driven by a change of the scalar curvature in an expanding early Universe: The “hyperinflation” scenario

    Energy Technology Data Exchange (ETDEWEB)

    Pashitskii, E. A., E-mail: pashitsk@iop.kiev.ua; Pentegov, V. I. [National Academy of Sciences of Ukraine, Institute of Physics (Ukraine)

    2016-01-15

    We suggest that the Big Bang could be a result of the first-order phase transition driven by a change in the scalar curvature of the 4D spacetime in an expanding cold Universe filled with a nonlinear scalar field φ and neutral matter with an equation of state p = νε (where p and ε are the pressure and energy density of the matter, respectively). We consider the Lagrangian of a scalar field with nonlinearity φ{sup 4} in a curved spacetime that, along with the term–ξR|φ|{sup 2} quadratic in φ (where ξ is the interaction constant between the scalar and gravitational fields and R is the scalar curvature), contains the term ξRφ{sub 0}(φ + φ{sup +}) linear in φ, where φ{sub 0} is the vacuum mean of the scalar field amplitude. As a consequence, the condition for the existence of extrema of the scalar-field potential energy is reduced to an equation cubic in φ. Provided that ν > 1/3, the scalar curvature R = [κ(3ν–1)ε–4Λ] (where κ and Λ are Einstein’s gravitational and cosmological constants, respectively) decreases with decreasing ε as the Universe expands, and a first-order phase transition in variable “external field” parameter proportional to R occurs at some critical value R{sub c} < 0. Under certain conditions, the critical radius of the early Universe at the point of the first-order phase transition can reach an arbitrary large value, so that this scenario of unrestricted “inflation” of the Universe may be called “hyperinflation.” After the passage through the phase-transition point, the scalar-field potential energy should be rapidly released, which must lead to strong heating of the Universe, playing the role of the Big Bang.

  14. Test Rig for Valves of Digital Displacement Machines

    DEFF Research Database (Denmark)

    Nørgård, Christian; Christensen, Jeppe Haals; Bech, Michael Møller

    2017-01-01

    A test rig for the valves of digital displacement machines has been developed at Aalborg University. It is composed of a commercial radial piston machine, which has been modified to facilitate Digital Displacement operation for a single piston. Prototype valves have been optimized, designed and m...

  15. The inflationary universe

    International Nuclear Information System (INIS)

    Linde, A.D.

    1984-01-01

    According to the inflationary universe scenario the universe in the very early stages of its evolution was exponentially expanding in the unstable vacuum-like state. At the end of the exponential expansion the energy of the unstable vacuum transforms into the energy of hot dense matter. Recently it was realised that the exponential expansion of the universe naturally occurs in a wide class of realistic theories of elementary particles. The inflationary universe scenario makes it possible to obtain a simple solution to many longstanding cosmological problems and leads to a crucial modification of the standard point of view of the large-scale structure of the universe. (author)

  16. Harming others : universal subjectivism and the expanding moral circle

    NARCIS (Netherlands)

    Berg, Floris van den

    2011-01-01

    Harming Others expounds what the author calls universal subjectivism, which is a cosmopolitan theory of political philosophy that deals with global justice, non-human animals and future generations. Although its main focus is political philosophy, the theory has wide applications to contemporary

  17. Three years of digital photogrammetry at CERN

    International Nuclear Information System (INIS)

    Gayde, J.Ch.; Lasseur, Ch.

    1999-01-01

    The LHC (Large Hadron Collider) is the new particle accelerator project at CERN (European Laboratory for Particle Physics) in Geneva. It will be a 27 km long accelerator made of superconducting magnets. Four big physics detectors: ALICE, ATLAS, CMS, LHC-B, will be installed at four points around it. With this project, new survey requirements appear together with new spatial and time scale constraints. In order to respond to the demand, the CERN Positioning Metrology Group decided to expand its tool box by buying digital photogrammetric equipment three years ago. Basically this equipment consist of Kodak DCS460 cameras and of the Rollei-CDW (Close-range Digital Workstation) software. This system has been used quite extensively since its purchase. The next chapters illustrate the reasons for the choice of the digital photogrammetry tool at CERN and the evolution of its use. Some adapted tooling is also described below. (authors)

  18. Digital learning programs - competition for the classical microscope?

    Science.gov (United States)

    Schmidt, Peter

    2013-01-01

    The development of digital media has been impressive in recent years which is also among the reason for their increasing use in academic teaching. This is especially true for teaching Anatomy and Histology in the first two years in medical and dental curricula. Modern digital technologies allow for efficient, affordable and easily accessible distribution of histological images in high quality. Microscopy depends almost exclusively on such images. Since 20 years numerous digital teaching systems have been developed for this purpose. Respective developments have changed the ways students acquire knowledge and prepare for exams. Teaching staff should adapt lectures, seminars and labs accordingly. As a first step, a collection of high resolution digital microscopic slides was made available for students at the Friedrich-Schiller-University in Jena. The aim of the present study was to evaluate the importance of conventional light microscopy and related technologies in current and future medical and dental education aswell. A survey was done among 172 medical and dental students at the Friedrich-Schiller-University Jena. 51% of students use now frequently new digital media for learning histology in contrast to 5% in the year 2000 [1]. Digital media including Internet, CD- based learning combined with social networks successfully compete with classical light microscopy.

  19. Digital Imaging and Communications in Medicine Whole Slide Imaging Connectathon at Digital Pathology Association Pathology Visions 2017.

    Science.gov (United States)

    Clunie, David; Hosseinzadeh, Dan; Wintell, Mikael; De Mena, David; Lajara, Nieves; Garcia-Rojo, Marcial; Bueno, Gloria; Saligrama, Kiran; Stearrett, Aaron; Toomey, David; Abels, Esther; Apeldoorn, Frank Van; Langevin, Stephane; Nichols, Sean; Schmid, Joachim; Horchner, Uwe; Beckwith, Bruce; Parwani, Anil; Pantanowitz, Liron

    2018-01-01

    As digital pathology systems for clinical diagnostic work applications become mainstream, interoperability between these systems from different vendors becomes critical. For the first time, multiple digital pathology vendors have publicly revealed the use of the digital imaging and communications in medicine (DICOM) standard file format and network protocol to communicate between separate whole slide acquisition, storage, and viewing components. Note the use of DICOM for clinical diagnostic applications is still to be validated in the United States. The successful demonstration shows that the DICOM standard is fundamentally sound, though many lessons were learned. These lessons will be incorporated as incremental improvements in the standard, provide more detailed profiles to constrain variation for specific use cases, and offer educational material for implementers. Future Connectathon events will expand the scope to include more devices and vendors, as well as more ambitious use cases including laboratory information system integration and annotation for image analysis, as well as more geographic diversity. Users should request DICOM features in all purchases and contracts. It is anticipated that the growth of DICOM-compliant manufacturers will likely also ease DICOM for pathology becoming a recognized standard and as such the regulatory pathway for digital pathology products.

  20. Global health education: a pilot in trans-disciplinary, digital instruction.

    Science.gov (United States)

    Wipfli, Heather; Press, David J; Kuhn, Virginia

    2013-05-02

    The development of new global health academic programs provides unique opportunities to create innovative educational approaches within and across universities. Recent evidence suggests that digital media technologies may provide feasible and cost-effective alternatives to traditional classroom instruction; yet, many emerging global health academic programs lag behind in the utilization of modern technologies. We created an inter-departmental University of Southern California (USC) collaboration to develop and implement a course focused on digital media and global health. Course curriculum was based on core tenants of modern education: multi-disciplinary, technologically advanced, learner-centered, and professional application of knowledge. Student and university evaluations were reviewed to qualitatively assess course satisfaction and educational outcomes. 'New Media for Global Health' ran for 18 weeks in the Spring 2012 semester with N=41 students (56.1% global health and 43.9% digital studies students). The course resulted in a number of high quality global health-related digital media products available at http://iml420.wordpress.com/. Challenges confronted at USC included administrative challenges related to co-teaching and frustration from students conditioned to a rigid system of teacher-led learning within a specific discipline. Quantitative and qualitative course evaluations reflected positive feedback for the course instructors and mixed reviews for the organization of the course. The development of innovative educational programs in global health requires on-going experimentation and information sharing across departments and universities. Digital media technologies may have implications for future efforts to improve global health education.

  1. Time, space, and disorder in the expanding proteome universe.

    Science.gov (United States)

    Minde, David-Paul; Dunker, A Keith; Lilley, Kathryn S

    2017-04-01

    Proteins are highly dynamic entities. Their myriad functions require specific structures, but proteins' dynamic nature ranges all the way from the local mobility of their amino acid constituents to mobility within and well beyond single cells. A truly comprehensive view of the dynamic structural proteome includes: (i) alternative sequences, (ii) alternative conformations, (iii) alternative interactions with a range of biomolecules, (iv) cellular localizations, (v) alternative behaviors in different cell types. While these aspects have traditionally been explored one protein at a time, we highlight recently emerging global approaches that accelerate comprehensive insights into these facets of the dynamic nature of protein structure. Computational tools that integrate and expand on multiple orthogonal data types promise to enable the transition from a disjointed list of static snapshots to a structurally explicit understanding of the dynamics of cellular mechanisms. © 2017 The Authors. Proteomics Published by Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  2. Runaway universe

    Energy Technology Data Exchange (ETDEWEB)

    Davies, P

    1978-01-01

    The subject is covered in chapters entitled: the emerging universe (general introduction, history of astronomical and cosmological research, origins, the expanding universe, stars, galaxies, electromagnetic radiation); primeval fire (the big bang model, origin of the elements, properties of the elements and of sub-atomic particles); order out of chaos (galactic evolution, star formation, nuclear fusion, the solar system, origin of life on Earth); a star called Sol (properties of the sun and of other stars); life in the universe; the catastrophe principle (the rise and fall of cosmic order); stardoom (star evolution, neutron stars); black holes and superholes (gravitational collapse); technology and survival; the dying universe (second law of thermodynamics); worlds without end (cosmological models).

  3. Aligning Digital Video Technology with Game Pedagogy in Physical Education

    Science.gov (United States)

    Koekoek, Jeroen; van der Mars, Hans; van der Kamp, John; Walinga, Wytse; van Hilvoorde, Ivo

    2018-01-01

    The rapid development of digital technology has expanded the prospects and promises for its application in physical education programs. Physical educators are becoming increasingly interested in technology but often remain inadequately equipped to effectively integrate these technological resources in their daily practice, and/or lack the…

  4. Scaled Data from Digital Ionograms

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — All the data contributed come from 1957 through 1990. They have been digitized, reformatted, converted to universal time (the software also can display the data in...

  5. A model for a PC-based, universal-format, multimedia digitization system: moving beyond the scanner.

    Science.gov (United States)

    McEachen, James C; Cusack, Thomas J; McEachen, John C

    2003-08-01

    Digitizing images for use in case presentations based on hardcopy films, slides, photographs, negatives, books, and videos can present a challenging task. Scanners and digital cameras have become standard tools of the trade. Unfortunately, use of these devices to digitize multiple images in many different media formats can be a time-consuming and in some cases unachievable process. The authors' goal was to create a PC-based solution for digitizing multiple media formats in a timely fashion while maintaining adequate image presentation quality. The authors' PC-based solution makes use of off-the-shelf hardware applications to include a digital document camera (DDC), VHS video player, and video-editing kit. With the assistance of five staff radiologists, the authors examined the quality of multiple image types digitized with this equipment. The authors also quantified the speed of digitization of various types of media using the DDC and video-editing kit. With regard to image quality, the five staff radiologists rated the digitized angiography, CT, and MR images as adequate to excellent for use in teaching files and case presentations. With regard to digitized plain films, the average rating was adequate. As for performance, the authors recognized a 68% improvement in the time required to digitize hardcopy films using the DDC instead of a professional quality scanner. The PC-based solution provides a means for digitizing multiple images from many different types of media in a timely fashion while maintaining adequate image presentation quality.

  6. The expanding universe of thiolated gold nanoclusters and beyond.

    Science.gov (United States)

    Jiang, De-en

    2013-08-21

    Thiolated gold nanoclusters form a universe of their own. Researchers in this field are constantly pushing the boundary of this universe by identifying new compositions and in a few "lucky" cases, solving their structures. Such solved structures, even if there are only few, provide important hints for predicting the many identified compositions that are yet to be crystallized or structure determined. Structure prediction is the most pressing issue for a computational chemist in this field. The success of the density functional theory method in gauging the energetic ordering of isomers for thiolated gold clusters has been truly remarkable, but to predict the most stable structure for a given composition remains a great challenge. In this feature article from a computational chemist's point of view, the author shows how one understands and predicts structures for thiolated gold nanoclusters based on his old and new results. To further entertain the reader, the author also offers several "imaginative" structures, claims, and challenges for this field.

  7. The movable digital planetary from the Cruzeiro do Sul University as a distributing agent of astronomy

    Science.gov (United States)

    Voelzke, Marcos Rincon

    2012-10-01

    The Movable Digital Planetary from the Cruzeiro do Sul University has been working in order to publicize and to popularize Astronomy, in particular among students and teachers of Primary (EF) and Medium (EM) Education in municipal and state schools of the City of São Paulo, but also for the general public at large. The aim of this paper is to show and publicize the activities already undertaken by this planetary. In 2010, several presentations were recorded, such as: for the School Cruzeiro do Sul, in São Miguel Paulista, serving 161 children in the EF; Eighth Symposium on Education, Cruzeiro do Sul University, 75 students; NGO Educational Project Capuano, Anália Franco, 30 adults: Fair Student Guide in Shopping Center Norte, 455 people; NGO Association for Charitable Paulista, Burgo Paulista, 70 children; Workshop of Advanced Computing and Informatics, Cruzeiro do Sul University, 37 students; Day of Social Responsibility, Social Work in Don Bosco, Itaquera, 133 people! . In 2011 the presentations took place during the XIII Regional Meeting of Astronomy Education at Cruzeiro do Sul University, serving 112 teachers; College Cruzeiro do Sul, São Miguel Paulista, 356 children of the EF; College Brasilia from São Paulo, Anália Franco, 102 children in the EF and for the Scout Group Caramuru, São Paulo, 104 children. The applied methodology in all presentations consisted of the exhibition of two videos about Astronomy with a subsequent discussion about the presented issues. Previous surveys have shown a great interest in the majority of participants in wanting to learn more about the subject, which clearly explains the importance of education in non-formal places for the teaching of Astronomy

  8. Update on new technologies in digital mammography

    Directory of Open Access Journals (Sweden)

    Patterson SK

    2014-08-01

    Full Text Available Stephanie K Patterson, Marilyn A Roubidoux Division of Breast Imaging, Department of Radiology, University of Michigan Health System, Ann Arbor, MI, USA Abstract: Despite controversy regarding mammography's efficacy, it continues to be the most commonly used breast cancer-screening modality. With the development of digital mammography, some improved benefit has been shown in women with dense breast tissue. However, the density of breast tissue continues to limit the sensitivity of conventional mammography. We discuss the development of some derivative digital technologies, primarily digital breast tomosynthesis, and their strengths, weaknesses, and potential patient impact. Keywords: screening mammography, breast cancer, contrast media, digital breast tomosynthesis

  9. A New Cosmological Model: Black Hole Universe

    Directory of Open Access Journals (Sweden)

    Zhang T. X.

    2009-07-01

    Full Text Available A new cosmological model called black hole universe is proposed. According to this model, the universe originated from a hot star-like black hole with several solar masses, and gradually grew up through a supermassive black hole with billion solar masses to the present state with hundred billion-trillion solar masses by accreting ambient mate- rials and merging with other black holes. The entire space is structured with infinite layers hierarchically. The innermost three layers are the universe that we are living, the outside called mother universe, and the inside star-like and supermassive black holes called child universes. The outermost layer is infinite in radius and limits to zero for both the mass density and absolute temperature. The relationships among all layers or universes can be connected by the universe family tree. Mathematically, the entire space can be represented as a set of all universes. A black hole universe is a subset of the en- tire space or a subspace. The child universes are null sets or empty spaces. All layers or universes are governed by the same physics - the Einstein general theory of relativity with the Robertson-walker metric of spacetime - and tend to expand outward physically. The evolution of the space structure is iterative. When one universe expands out, a new similar universe grows up from its inside. The entire life of a universe begins from the birth as a hot star-like or supermassive black hole, passes through the growth and cools down, and expands to the death with infinite large and zero mass density and absolute temperature. The black hole universe model is consistent with the Mach principle, the observations of the universe, and the Einstein general theory of relativity. Its various aspects can be understood with the well-developed physics without any difficulty. The dark energy is not required for the universe to accelerate its expansion. The inflation is not necessary because the black hole universe

  10. Digital Storytelling: A Method for Engaging Students and Increasing Cultural Competency

    Science.gov (United States)

    Grant, Natalie S.; Bolin, Brien L.

    2016-01-01

    Digital storytelling is explored as a method of engaging students in the development of media literacy and cultural competency. This paper describes the perceptions and experiences of 96 undergraduate students at a large Midwestern university, after completing a digital storytelling project in a semester-long diversity course. Digital storytelling…

  11. Tissue expander infections in children: look beyond the expander pocket.

    Science.gov (United States)

    Mason, A C; Davison, S P; Manders, E K

    1999-11-01

    Infection of the expander pocket is the most common complication encountered with soft-tissue expansion. It is usually due to direct inoculation with skin flora either at the time of expander insertion or from extrusion of the device. The authors report two cases of infection of tissue expanders in which the children had concomitant infected sites distant from the prosthesis. Etiological bacteria of common pediatric infections like otitis media and pharyngitis were cultured from the infected expander pocket, raising suspicion that translocation of the organism to the expander had occurred. Aggressive antibiotic treatment, removal of the prosthesis, and flap advancement is advocated.

  12. User Requirements Analysis For Digital Library Application Using Quality Function Deployment.

    Science.gov (United States)

    Wulandari, Lily; Sularto, Lana; Yusnitasari, Tristyanti; Ikasari, Diana

    2017-03-01

    This study attemp to build Smart Digital Library to be used by the wider community wherever they are. The system is built in the form of Smart Digital Library portal which uses semantic similarity method (Semantic Similarity) to search journals, articles or books by title or author name. This method is also used to determine the recommended books to be read by visitors of Smart Digital Library based on testimony from a previous reader automatically. Steps being taken in the development of Smart Digital Library system is the analysis phase, design phase, testing and implementation phase. At this stage of the analysis using WebQual for the preparation of the instruments to be distributed to the respondents and the data obtained from the respondents will be processed using Quality Function Deployment. In the analysis phase has the purpose of identifying consumer needs and technical requirements. The analysis was performed to a digital library on the web digital library Gunadarma University, Bogor Institute of Agriculture, University of Indonesia, etc. The questionnaire was distributed to 200 respondents. The research methodology begins with the collection of user requirements and analyse it using QFD. Application design is funded by the government through a program of Featured Universities Research by the Directorate General of Higher Education (DIKTI). Conclusions from this research are identified which include the Consumer Requirements of digital library application. The elements of the consumers requirements consists of 13 elements and 25 elements of Engineering Characteristics digital library requirements. Therefore the design of digital library applications that will be built, is designed according to the findings by eliminating features that are not needed by restaurant based on QFD House of Quality.

  13. MARIAN: Flexible Interoperability for Federated Digital Libraries

    OpenAIRE

    Goncalves, Marcos A.; France, Robert K.; Fox, Edward A.; Hilf, Eberhard R.; Zimmermann, Kerstin; Severiens, Thomas

    2001-01-01

    Federated digital libraries are composed of distributed autonomous (heterogeneous) information services but provide users with a transparent, integrated view of collected information respecting different information sources' autonomy. In this paper we discuss a federated system for the Networked Digital Library of Theses and Dissertations (NDLTD), an international consortium of universities, libraries, and other supporting institutions focused on electronic theses and dissertations (ETDs). Th...

  14. Inhibiting and driving forces for the digitalization of security systems: security officers’ view on the issue

    OpenAIRE

    Lahtinen, Markus

    2007-01-01

    This memo reports on factors that drive and inhibit the digitalization of security systems. The reported factors are as follows: Technology-push factors • Need to lower costs on the end-user side, i.e. replacing labour with technology • Perceived convenience and ease-of-use of digital systems • Digital products can be connected to the current enterprise network; enabling an expanding set of security features • Firms holding the IP-capability (IP=Internet Protocol) and not h...

  15. Expanding Gerontology Enrollments: Successful Results of an Innovative Outreach Program

    Science.gov (United States)

    Reynolds, Sandra L.; Haley, William E.; Hyer, Kathryn

    2007-01-01

    As state budget allocations for higher education decrease, "specialty" programs such as gerontology must continually demonstrate their productivity. State and private universities increasingly rely on student credit hours (SCH) or tuition generated, which is making it difficult for many gerontology programs to expand. The School of Aging Studies…

  16. Effective cosmological constant within the expanding axion universe

    Energy Technology Data Exchange (ETDEWEB)

    Pierpoint, M.P., E-mail: M.Pierpoint@lboro.ac.uk; Kusmartsev, F.V., E-mail: F.Kusmartsev@lboro.ac.uk

    2014-09-12

    We show that the value of an effective cosmological constant, Λ{sub eff}, is influenced by the dimensionality of the space. Results were obtained in the framework of the axion model describing expansion of the inhomogeneous universe. Λ{sub eff} determines the tension of the space (i.e. elasticity), and is relaxed when extra dimensions are accessible. We demonstrate that the effective value of the cosmological constant may be tuned to be consistent with experimental observation. Inhomogeneities considered are representative of temperature fluctuations observed within the cosmic microwave background radiation.

  17. Digital Clusters: How the Net is Marking Us

    Directory of Open Access Journals (Sweden)

    Luciano Giustini

    2017-12-01

    Full Text Available The work moves from the analysis of data from digital illiteracies as well as cognitive biases, deepening the specific criticalities of the phenomenon of the conversational decay, made pervasive by the diffusion of social networks - touching the topics of false news, fanaticism and online hate speech. In this context, even due to the algorithms’ filtering action, the user, being protagonist of the network and its contents, risks to be confined in large online structures, closed in echo chambers and finding only converging and polarized ideas. Deepening the theme of personal and collective narration, and how this is augmented and expanded in social media, the work explores a new digital aggregation object, called “Digital cluster”. These aggregations overcome and widen the phenomenon of “digital bubbles” described by Eli Pariser in 2011, and outline a digital context in which different subjects select contents to reinforce the choices and the common narratives. In these aggregations, there are also other elements, from the topology of the network to the presence of other distortions, which bring the phenomenon towards a wider scale magnitude, which is examined in rate and implications.

  18. Digital Product Acquisition In The Context Of Piracy

    DEFF Research Database (Denmark)

    Veitch, Rob; Constantiou, Ioanna

    2011-01-01

    Ten years after the fall of Napster, digital piracy remains an issue for e-commerce firms. While scholars treat digital piracy as a behaviour that needs to be prevented or punished, the user’s decision about how to acquire a digital product involves more than the piracy option, yet the decision b...... is conducted for film and music using data collected students in at two Danish universities. The paper concludes with an outline for future research....

  19. A Spectrum of Interoperability: The Site for Science Prototype for the NSDL; Re-Inventing the Wheel? Standards, Interoperability and Digital Cultural Content; Preservation Risk Management for Web Resources: Virtual Remote Control in Cornell's Project Prism; Safekeeping: A Cooperative Approach to Building a Digital Preservation Resource; Object Persistence and Availability in Digital Libraries; Illinois Digital Cultural Heritage Community-Collaborative Interactions among Libraries, Museums and Elementary Schools.

    Science.gov (United States)

    Arms, William Y.; Hillmann, Diane; Lagoze, Carl; Krafft, Dean; Marisa, Richard; Saylor, John; Terizzi, Carol; Van de Sompel, Herbert; Gill, Tony; Miller, Paul; Kenney, Anne R.; McGovern, Nancy Y.; Botticelli, Peter; Entlich, Richard; Payette, Sandra; Berthon, Hilary; Thomas, Susan; Webb, Colin; Nelson, Michael L.; Allen, B. Danette; Bennett, Nuala A.; Sandore, Beth; Pianfetti, Evangeline S.

    2002-01-01

    Discusses digital libraries, including interoperability, metadata, and international standards; Web resource preservation efforts at Cornell University; digital preservation at the National Library of Australia; object persistence and availability; collaboration among libraries, museums and elementary schools; Asian digital libraries; and a Web…

  20. Geometry of the Universe

    International Nuclear Information System (INIS)

    Gurevich, L.Eh.; Gliner, Eh.B.

    1978-01-01

    Problems of investigating the Universe space-time geometry are described on a popular level. Immediate space-time geometries, corresponding to three cosmologic models are considered. Space-time geometry of a closed model is the spherical Riemann geonetry, of an open model - is the Lobachevskij geometry; and of a plane model - is the Euclidean geometry. The Universe real geometry in the contemporary epoch of development is based on the data testifying to the fact that the Universe is infinitely expanding

  1. IHH and FGF8 coregulate elongation of digit primordia.

    Science.gov (United States)

    Zhou, Jian; Meng, Junwei; Guo, Shengzhen; Gao, Bo; Ma, Gang; Zhu, Xuming; Hu, Jianxin; Xiao, Yue; Lin, Chuwen; Wang, Hongsheng; Ding, Lusheng; Feng, Guoyin; Guo, Xizhi; He, Lin

    2007-11-23

    In the developing limb bud, digit pattern arises from anterior-posterior (A-P) positional information which is provided by the concentration gradient of SHH. However, the mechanisms of translating early asymmetry into morphological form are still unclear. Here, we examined the ability of IHH and FGF8 signaling to regulate digital chondrogenesis, by implanting protein-loaded beads in the interdigital space singly and in combination. We found that IHH protein induced an elongated digit and that FGF8 protein blocked the terminal phalange formation. Molecular marker analysis showed that IHH expanded Sox9 expression in mesenchymal cells possibly through up-regulated FGF8 expression. Application of both IHH and FGF8 protein induced a large terminal phalange. These results suggest that both enhanced IHH and FGF8 signaling are required for the development of additional cartilage element in limbs. IHH and FGF8 maybe play different roles and act synergistically to promote chondrogenesis during digit primordia elongation.

  2. How Digital Image Processing Became Really Easy

    Science.gov (United States)

    Cannon, Michael

    1988-02-01

    In the early and mid-1970s, digital image processing was the subject of intense university and corporate research. The research lay along two lines: (1) developing mathematical techniques for improving the appearance of or analyzing the contents of images represented in digital form, and (2) creating cost-effective hardware to carry out these techniques. The research has been very effective, as evidenced by the continued decline of image processing as a research topic, and the rapid increase of commercial companies to market digital image processing software and hardware.

  3. Introduction: digital games as a context for cognitive development, learning, and developmental research.

    Science.gov (United States)

    Blumberg, Fran C; Fisch, Shalom M

    2013-01-01

    The authors present reasons why developmental psychologists should care about children's and adolescents' digital game play. These reasons may be identified as: a) digital game play is an integral aspect of children's and adolescents' lives; b) digital game play contributes to learning and cognitive development; and c) developmental research has the potential to contribute to effective educational game design. The authors expand on these reasons with the goal of introducing or reintroducing to developmental psychologists a rich and very relevant context in which to examine children's and adolescents' applied cognitive development. Copyright © 2013 Wiley Periodicals, Inc., A Wiley Company.

  4. The Sloan Digital Sky Survey: Status and prospects

    Energy Technology Data Exchange (ETDEWEB)

    Loveday, J.; SDSS Collaboration

    1996-05-01

    The Sloan Digital Sky Survey (SDSS) is a project to definitively map {pi} steradians of the local Universe. An array of CCD detectors used in drift-scan mode will digitally image the sky in five passbands to a limiting magnitude of r{prime} {approximately} 23. Selected from the imaging survey, 10{sup 6} galaxies and 10{sup 5} quasars will be observed spectroscopically. I describe the current status of the survey, which is due to begin observations early in 1997, and its prospects for constraining models for dark matter in the Universe. 8 refs., 7 figs.

  5. The fluidities of digital learning environments and resources

    DEFF Research Database (Denmark)

    Hansbøl, Mikala

    2012-01-01

    The research project “Educational cultures and serious games on a global market place” (2009-2011) dealt with the challenge of the digital learning environment and hence it’s educational development space always existing outside the present space and hence scope of activities. With a reference...... and establishments of the virtual universe called Mingoville.com, the research shows a need to include in researchers’ conceptualizations of digital learning environments and resources, their shifting materialities and platformations and hence emerging (often unpredictable) agencies and educational development...... spaces. Keywords: Fluidity, digital learning environment, digital learning resource, educational development space...

  6. Digital Spectrometers for Interplanetary Science Missions

    Science.gov (United States)

    Jarnot, Robert F.; Padmanabhan, Sharmila; Raffanti, Richard; Richards, Brian; Stek, Paul; Werthimer, Dan; Nikolic, Borivoje

    2010-01-01

    A fully digital polyphase spectrometer recently developed by the University of California Berkeley Wireless Research Center in conjunction with the Jet Propulsion Laboratory provides a low mass, power, and cost implementation of a spectrum channelizer for submillimeter spectrometers for future missions to the Inner and Outer Solar System. The digital polyphase filter bank spectrometer (PFB) offers broad bandwidth with high spectral resolution, minimal channel-to-channel overlap, and high out-of-band rejection.

  7. Expanding the universe of categorical syllogisms: a challenge for reasoning researchers.

    Science.gov (United States)

    Roberts, Maxwell J

    2005-11-01

    Syllogistic reasoning, in which people identify conclusions from quantified premise pairs, remains a benchmark task whose patterns of data must be accounted for by general theories of deductive reasoning. However, psychologists have confined themselves to administering only the 64 premise pairs historically identified by Aristotle. By utilizing all combinations of negations, the present article identifies an expanded set of 576 premise pairs and gives the valid conclusions that they support. Many of these have interesting properties, and the identification of predictions and their verification will be an important next step for all proponents of such theories.

  8. Global health education: a pilot in trans-disciplinary, digital instruction

    Science.gov (United States)

    Wipfli, Heather; Press, David J.; Kuhn, Virginia

    2013-01-01

    Background The development of new global health academic programs provides unique opportunities to create innovative educational approaches within and across universities. Recent evidence suggests that digital media technologies may provide feasible and cost-effective alternatives to traditional classroom instruction; yet, many emerging global health academic programs lag behind in the utilization of modern technologies. Objective We created an inter-departmental University of Southern California (USC) collaboration to develop and implement a course focused on digital media and global health. Design Course curriculum was based on core tenants of modern education: multi-disciplinary, technologically advanced, learner-centered, and professional application of knowledge. Student and university evaluations were reviewed to qualitatively assess course satisfaction and educational outcomes. Results ‘New Media for Global Health’ ran for 18 weeks in the Spring 2012 semester with N=41 students (56.1% global health and 43.9% digital studies students). The course resulted in a number of high quality global health-related digital media products available at http://iml420.wordpress.com/. Challenges confronted at USC included administrative challenges related to co-teaching and frustration from students conditioned to a rigid system of teacher-led learning within a specific discipline. Quantitative and qualitative course evaluations reflected positive feedback for the course instructors and mixed reviews for the organization of the course. Conclusion The development of innovative educational programs in global health requires on-going experimentation and information sharing across departments and universities. Digital media technologies may have implications for future efforts to improve global health education. PMID:23643297

  9. Global health education: a pilot in trans-disciplinary, digital instruction

    Directory of Open Access Journals (Sweden)

    Heather Wipfli

    2013-05-01

    Full Text Available Background: The development of new global health academic programs provides unique opportunities to create innovative educational approaches within and across universities. Recent evidence suggests that digital media technologies may provide feasible and cost-effective alternatives to traditional classroom instruction; yet, many emerging global health academic programs lag behind in the utilization of modern technologies. Objective: We created an inter-departmental University of Southern California (USC collaboration to develop and implement a course focused on digital media and global health. Design: Course curriculum was based on core tenants of modern education: multi-disciplinary, technologically advanced, learner-centered, and professional application of knowledge. Student and university evaluations were reviewed to qualitatively assess course satisfaction and educational outcomes. Results: ‘New Media for Global Health’ ran for 18 weeks in the Spring 2012 semester with N=41 students (56.1% global health and 43.9% digital studies students. The course resulted in a number of high quality global health-related digital media products available at http://iml420.wordpress.com/. Challenges confronted at USC included administrative challenges related to co-teaching and frustration from students conditioned to a rigid system of teacher-led learning within a specific discipline. Quantitative and qualitative course evaluations reflected positive feedback for the course instructors and mixed reviews for the organization of the course. Conclusion: The development of innovative educational programs in global health requires on-going experimentation and information sharing across departments and universities. Digital media technologies may have implications for future efforts to improve global health education.

  10. Dark Matter Freeze-in Production in Fast-Expanding Universes

    Science.gov (United States)

    D'Eramo, Francesco; Fernandez, Nicolas; Profumo, Stefano

    2018-02-01

    If the dark matter is produced in the early universe prior to Big Bang nucleosynthesis, a modified cosmological history can drastically affect the abundance of relic dark matter particles. Here, we assume that an additional species to radiation dominates at early times, causing the expansion rate at a given temperature to be larger than in the standard radiation-dominated case. We demonstrate that, if this is the case, dark matter production via freeze-in (a scenario when dark matter interacts very weakly, and is dumped in the early universe out of equilibrium by decay or scattering processes involving particles in the thermal bath) is dramatically suppressed. We illustrate and quantitatively and analytically study this phenomenon for three different paradigmatic classes of freeze-in scenarios. For the frozen-in dark matter abundance to be as large as observations, couplings between the dark matter and visible-sector particles must be enhanced by several orders of magnitude. This sheds some optimistic prospects for the otherwise dire experimental and observational outlook of detecting dark matter produced by freeze-in.

  11. The correlation function for density perturbations in an expanding universe. IV - The evolution of the correlation function. [galaxy distribution

    Science.gov (United States)

    Mcclelland, J.; Silk, J.

    1979-01-01

    The evolution of the two-point correlation function for the large-scale distribution of galaxies in an expanding universe is studied on the assumption that the perturbation densities lie in a Gaussian distribution centered on any given mass scale. The perturbations are evolved according to the Friedmann equation, and the correlation function for the resulting distribution of perturbations at the present epoch is calculated. It is found that: (1) the computed correlation function gives a satisfactory fit to the observed function in cosmological models with a density parameter (Omega) of approximately unity, provided that a certain free parameter is suitably adjusted; (2) the power-law slope in the nonlinear regime reflects the initial fluctuation spectrum, provided that the density profile of individual perturbations declines more rapidly than the -2.4 power of distance; and (3) both positive and negative contributions to the correlation function are predicted for cosmological models with Omega less than unity.

  12. E-library Implementation in Library University of Riau

    Science.gov (United States)

    Yuhelmi; Rismayeti

    2017-12-01

    This research aims to see how the e-book implementation in Library University of Riau and the obstacle in its implementation. In the Globalization era, digital libraries should be developed or else it will decrease the readers’ interest, with the recent advanced technology, digital libraries are one of the learning tools that can be used to finding an information through the internet access, hence digital libraries or commonly known as E-Library is really helping the students and academic community in finding information. The methods that used in this research is Observation, Interview, and Literature Study. The respondents in this research are the staff who involved in the process of digitization in Library University of Riau. The result of this research shows that implementation of e-library in Library University of Riau is already filled the user needs for now, although there is obstacle faced just like technical problems for example the internet connection speed and the technical problem to convert the format from Microsoft Word .doc to Adobe.pdf

  13. How can the digital library contribute to employability?

    Directory of Open Access Journals (Sweden)

    Karen Harbo

    2016-12-01

    Full Text Available The DEFF project, E-learning, Information literacy and Library services, supports the education policy ambition of enhancing links between education and employment. The project consortium includes libraries from all Danish universities, university colleges and one business academy. Timeframe for the project is 2014-16. The project understands employability as: In close cooperation with study programmes libraries will strengthen students’ ability to perform independently and critically in a professional context by being able to identify, collect, evaluate, organize and present information via digital platforms. A partnership is made between the digital library (partner libraries involved and the virtual learning environment (educational institutions, based on the above definition of employability. This is done within the framework of Learning Management Systems (LMS and Massive Open Online Courses (MOOCs. The libraries and academic programmes will collaborate to create e-learning objects based on the relevant digital library systems and information resources. Departments from three Danish universities will contribute by strengthening the project participants’ skills in e-didactics and the development of e-learning objects (SDUUP, University of Southern Denmark, developing a range of flexible concepts for the integration of the virtual library into learning environments (IVA, Copenhagen University and evaluating the project’s activities (E-Learning Lab, Aalborg University. Sustainable results include the training of library staff to work together with academic programmes via the virtual learning environments, the development of flexible concepts for integrating the virtual library with study environments and knowledge on how inputs, created by the project for each study programme, should function.

  14. What Learners "Know" through Digital Media Production: Learning by Design

    Science.gov (United States)

    Mills, Kathy A.

    2010-01-01

    The power to influence others in ever expanding social networks in the new knowledge economy is tied to capabilities with digital media production that require increased technological knowledge. This article draws on research in primary classrooms to examine the repertoires of cross-disciplinary knowledge that literacy learners need to produce…

  15. Apprendere con il digital storytelling

    Directory of Open Access Journals (Sweden)

    Corrado Petrucco

    2009-01-01

    Full Text Available Discussion deli 'narrative storytelling approach in terms of support that this teaching strategy can' deliver on the cognitive and emotional. The authors report a 'laboratory experience of Digital Storytelling made in a university course of Education.

  16. Progress and challenges associated with digitizing and serving up Hawaii's geothermal data

    Science.gov (United States)

    Thomas, D. M.; Lautze, N. C.; Abdullah, M.

    2012-12-01

    This presentation will report on the status of our effort to digitize and serve up Hawaii's geothermal information, an undertaking that commenced in 2011 and will continue through at least 2013. This work is part of national project that is funded by the Department of Energy and managed by the Arizona State Geology Survey (AZGS). The data submitted to AZGS is being entered into the National Geothermal Data System (see http://www.stategeothermaldata.org/overview). We are also planning to host the information locally. Main facets of this project are to: - digitize and generate metadata for non-published geothermal documents relevant to the State of Hawaii - digitize ~100 years of paper records relevant to well permitting and water resources development and serve up information on the ~4500 water wells in the state - digitize, organize, and serve up information on research and geothermal exploratory drilling conducted from the 1980s to the present. - work with AZGS and OneGeology to contribute a geologic map for Hawaii that integrates geologic and geothermal resource data. By December 2012, we anticipate that the majority of the digitization will be complete, the geologic map will be approved, and that over 1000 documents will be hosted online through the University of Hawaii's library system (in the "Geothermal Collection" within the "Scholar Space" repository, see http://scholarspace.manoa.hawaii.edu/handle/10125/21320). Developing a 'user-friendly' web interface for the water well and drilling data will be a main task in the coming year. Challenges we have faced and anticipate include: 1) ensuring that no personally identifiable information (e.g. SSN, private telephone numbers, bank or credit account) is contained in the geothermal documents and well files; 2) Homeland Security regulations regarding release of information on critical infrastructure related to municipal water supply systems; 3) maintenance of the well database as future well data are developed with

  17. Expanding Access to NCAR's Digital Assets: Towards a Unified Scientific Data Management System

    Science.gov (United States)

    Stott, D.

    2016-12-01

    In 2014 the National Center for Atmospheric Research (NCAR) Directorate created the Data Stewardship Engineering Team (DSET) to plan and implement the strategic vision of an integrated front door for data discovery and access across the organization, including all laboratories, the library, and UCAR Community Programs. The DSET is focused on improving the quality of users' experiences in finding and using NCAR's digital assets. This effort also supports new policies included in federal mandates, NSF requirements, and journal publication rules. An initial survey with 97 respondents identified 68 persons responsible for more than 3 petabytes of data. An inventory, using the Data Asset Framework produced by the UK Digital Curation Centre as a starting point, identified asset types that included files and metadata, publications, images, and software (visualization, analysis, model codes). User story sessions with representatives from each lab identified and ranked desired features for a unified Scientific Data Management System (SDMS). A process beginning with an organization-wide assessment of metadata by the HDF Group and followed by meetings with labs to identify key documentation concepts, culminated in the development of an NCAR metadata dialect that leverages the DataCite and ISO 19115 standards. The tasks ahead are to build out an SDMS and populate it with rich standardized metadata. Software packages have been prototyped and currently are being tested and reviewed by DSET members. Key challenges for the DSET include technical and non-technical issues. First, the status quo with regard to how assets are managed varies widely across the organization. There are differences in file format standards, technologies, and discipline-specific vocabularies. Metadata diversity is another real challenge. The types of metadata, the standards used, and the capacity to create new metadata varies across the organization. Significant effort is required to develop tools to create

  18. : Digital Humanities and the Place of Pedagogy

    OpenAIRE

    Hirsch, BD

    2012-01-01

    It is fitting that this collection of essays on “digital humanities” pedagogy should have its roots in discussions that followed the 2009 Digital Humanities Summer Institute at the University of Victoria, British Columbia, where I was then a postdoctoral fellow. In the course of his plenary lecture, “How to Win Friends,” Donald Bruce noted how little focus there was on teaching in the extant critical literature on the digital humanities. To test this observation, after the lecture I turned to...

  19. Gravitational instability in a multicomponent expanding medium

    International Nuclear Information System (INIS)

    Solov'eva, L.V.; Nurgaliev, I.S.

    1985-01-01

    In the Newtonian approximation we consider the gravitational instability of a two- or N-component medium in an expanding universe. The system of density-perturbation equations is solved in the short- and long-wave limits. For small values of the wave vector k, a result obtained for the stationary case continues to hold true: at most there can exist only one unstable mode. If k is kept fixed, the introduction of a perturbation component delta/sub i/ will speed the growth of fluctuations delta/sub j/, provided the adiabatic indices γ/sub i/>γ/sub j/. In the large-k limit, ordinary acoustic waves result. Other components will begin to manifest themselves in the first-order terms when the oscillation amplitude is expanded in powers of k -1 : provided γ/sub j/>γ/sub i/> or =4/3, the ith-component amplitude will decay more slowly than otherwise

  20. Double universe and the arrow of time

    Energy Technology Data Exchange (ETDEWEB)

    Alfinito, Eleonora [Dipartimento di Ingegneria dell' Innovazione, Universitta di Lecce, 73100 Lecce and CNISM-Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia. Universita di Lecce (Italy); Vitiello, Giuseppe [Dipartimento di Fisica, Universita di Salerno, and INFN Gruppo Collegato di Salerno, 84100 Salerno (Italy)

    2007-05-15

    The canonical quantum field theory formalism for the expanding geometry universe leads to the 'Double Universe' scenario envisaged by quantum loop gravity. Thermal properties of inflating universe and the classicality of the time-evolution trajectories in the space of the representations of the canonical commutation relations are also discussed.

  1. Tempos de convergência: o perfil digital do jovem universitário da UFAC

    OpenAIRE

    Dreves, Aleta Tereza [UNESP

    2015-01-01

    The Digial technologies are increasingly presente in today's society due to globalization. Digital inclusion and the experience in virtual worlds are part of the current situation of the development of networks. To understand the juvenile characteristics inserted in the digital context of young people residing in the North, we intend, in this research, verify that the university students, aged 17-29 years of the Federal University of Acre - UFAC are using digital technologies combined with di...

  2. Digital Reference: What the Past Has Taught Us and What the Future Will Hold

    Directory of Open Access Journals (Sweden)

    Mehdi Mohammadi

    2007-10-01

    Full Text Available By the end of the nineteenth century, the role of the librarian had expanded to include reference service, and it has been part of the profession since then. New technologies change the way we search for information and what we expect from reference service. With the introduction of the computer and the Internet, libraries expanded the role of reference beyond the use of the mail, telephone, or the fax machine. Today, librarians not only help patrons at the reference desk but also in cyberspace. This new type of service, called digital or virtual reference, is quite new, but has quickly become popular because of demands by patrons to access information anytime, anywhere. This paper discusses issues related to the use of digital/virtual reference in academic libraries in the U.S.

  3. [Cardiovascular effects produced by prophylactic digitalization during introduction of anaesthesia (author's transl)].

    Science.gov (United States)

    Köppen, R; Köhne, K; Busse, J; Hosselmann, I; Klaschik, E; Simons, F

    1978-10-01

    The narrow field of non-controversial indications concerning the application of digitalis glycosides is pointed out. Problems of routine digitalization of older patients not suffering from cardiac insuffiency are discussed with special regard to preparing them for operations. Up to now, from the viewpoint of anaesthesiologists no benefits of prophylactic digitalization have been found. In a retrospective computerized study, clinical hemodynamic parameters during introduction of anaesthesia have been investigated by means of anaesthetic data recorded during three years. Nondigitalized patients older than fifty years showed satisfactory cardiac functions, whereas prophylactically digitalized patients--compared with the control group--have been treated with plasma expanders earlier and at a double rate. Furthermore, higher heart frequencies and greater tendency to arrythmias were observed. Consequently, prophylactic digitalization cannot be recommended in general.

  4. An introduction to digital computing

    CERN Document Server

    George, F H

    2014-01-01

    An Introduction to Digital Computing provides information pertinent to the fundamental aspects of digital computing. This book represents a major step towards the universal availability of programmed material.Organized into four chapters, this book begins with an overview of the fundamental workings of the computer, including the way it handles simple arithmetic problems. This text then provides a brief survey of the basic features of a typical computer that is divided into three sections, namely, the input and output system, the memory system for data storage, and a processing system. Other c

  5. A University Library Creates a Digital Repository for Documenting and Disseminating Community Engagement

    Science.gov (United States)

    Miller, William A.; Billings, Marilyn

    2012-01-01

    Digital repositories are new tools for documenting the accumulated scholarly work produced at academic institutions and disseminating that material broadly via the internet. Digital repositories support all file types and can be adapted to meet the custom design specifications of individual institutions. A section for community engagement…

  6. DIGITAL STORYTELLING, EDUCAÇÃO SUPERIOR E LITERACIA DIGITAL

    Directory of Open Access Journals (Sweden)

    Josias Ricardo Hack

    2013-04-01

    Full Text Available O texto revisa e dialoga com autores de artigos e livros em Língua Inglesa e Língua Portuguesa sobre fundamentos técnicos da produção audiovisual, como o Digital Storytelling, a ser utilizada na educação superior e produzida pelos próprios interlocutores do processo de aprendizagem. O intuito é refletir sobre algumas características necessárias para se desenvolver uma experiência contextualizada com curtas histórias audiovisuais pessoais na aprendizagem de adultos. A metodologia de investigação é pautada em pesquisa bibliográfica nas bases de dados da Nottingham Trent University (Inglaterra e da Universidade Federal de Santa Catarina (Brasil. Os resultados do estudo apontam que certas habilidades, como a capacidade de construir uma narrativa e editar imagem, vídeo e som são requeridas dos envolvidos em educação superior em razão da inserção de múltiplas tecnologias digitais no cotidiano. Assim, a experiência prática de produção audiovisual educativa pode trazer a possibilidade de literacia digital pela realização de peças audiovisuais no processo de aprendizagem colaborativa de adultos. Palavras-chave: Histórias digitais. Digital Storytelling. Educação superior. Literacia digital. Aprendizagem de adultos.

  7. Developing a Digital Assessment in Senior Secondary Physical Education

    Science.gov (United States)

    Penney, Dawn; Jones, Andy; Newhouse, Paul; Cambell, Alistair

    2012-01-01

    Background: The Digital Forms of Assessment project is a three-year Australian Research Council Linkage research project being conducted by Edith Cowan University's Centre for Schooling and Learning Technologies (CSaLT) in partnership with the Curriculum Council of Western Australia. The project is investigating the potential for a digital format…

  8. Carnegie Mellon University bioimaging day 2014: Challenges and opportunities in digital pathology

    Directory of Open Access Journals (Sweden)

    Gustavo K Rohde

    2014-01-01

    Full Text Available Recent advances in digital imaging is impacting the practice of pathology. One of the key enabling technologies that is leading the way towards this transformation is the use of whole slide imaging (WSI which allows glass slides to be converted into large image files that can be shared, stored, and analyzed rapidly. Many applications around this novel technology have evolved in the last decade including education, research and clinical applications. This publication highlights a collection of abstracts, each corresponding to a talk given at Carnegie Mellon University′s (CMU Bioimaging Day 2014 co-sponsored by the Biomedical Engineering and Lane Center for Computational Biology Departments at CMU. Topics related specifically to digital pathology are presented in this collection of abstracts. These include topics related to digital workflow implementation, imaging and artifacts, storage demands, and automated image analysis algorithms.

  9. From Real Challenges to Virtual Reality: Realizing Your Collection through Digital Partnership

    Science.gov (United States)

    Johnson, Jennifer; Mandity, Edward

    2010-01-01

    In fall 2008, a collaborative partnership was formed between the libraries of two Indiana universities--Marian College's (now Marian University) Mother Theresa Hackelmeier Memorial Library, and the University Library at Indiana University-Purdue University Indianapolis (IUPUI). The authors discuss the digital nature of this collaboration, which…

  10. Oscillating Bianchi IX universe in Horava-Lifshitz gravity

    International Nuclear Information System (INIS)

    Misonoh, Yosuke; Maeda, Kei-ichi; Kobayashi, Tsutomu

    2011-01-01

    We study a vacuum Bianchi IX universe in the context of Horava-Lifshitz gravity. In particular, we focus on the classical dynamics of the universe and analyze how anisotropy changes the history of the universe. For small anisotropy, we find an oscillating universe as well as a bounce universe just as the case of the Friedmann-Lemaitre-Robertson-Walker spacetime. However, if the initial anisotropy is large, we find the universe which ends up with a big crunch after oscillations if a cosmological constant Λ is zero or negative. For Λ>0, we find a variety of histories of the universe, that is a de Sitter expanding universe after oscillations in addition to the oscillating solution and the previous big crunch solution. This fate of the universe shows sensitive dependence of initial conditions, which is one of the typical properties of a chaotic system. If the initial anisotropy is near the upper bound, we find the universe starting from a big bang and ending up with a big crunch for Λ≤0, and a de Sitter expanding universe starting from a big bang for Λ>0.

  11. User Decisions Among Digital Piracy and Legal Alternatives for Film and Music

    DEFF Research Database (Denmark)

    Veitch, Robert; Constantiou, Ioanna

    2012-01-01

    Technologies enabling digital piracy have expanded the variety of modes available to users when deciding how to access film and music. We examine user decisions in context, investigating which factors influence the decision to use traditional or new legal options over piracy. Our study contributes...

  12. Functional diversification of Argonautes in nematodes: an expanding universe.

    Science.gov (United States)

    Buck, Amy H; Blaxter, Mark

    2013-08-01

    In the last decade, many diverse RNAi (RNA interference) pathways have been discovered that mediate gene silencing at epigenetic, transcriptional and post-transcriptional levels. The diversity of RNAi pathways is inherently linked to the evolution of Ago (Argonaute) proteins, the central protein component of RISCs (RNA-induced silencing complexes). An increasing number of diverse Agos have been identified in different species. The functions of most of these proteins are not yet known, but they are generally assumed to play roles in development, genome stability and/or protection against viruses. Recent research in the nematode Caenorhabditis elegans has expanded the breadth of RNAi functions to include transgenerational epigenetic memory and, possibly, environmental sensing. These functions are inherently linked to the production of secondary siRNAs (small interfering RNAs) that bind to members of a clade of WAGOs (worm-specific Agos). In the present article, we review briefly what is known about the evolution and function of Ago proteins in eukaryotes, including the expansion of WAGOs in nematodes. We postulate that the rapid evolution of WAGOs enables the exceptional functional plasticity of nematodes, including their capacity for parasitism.

  13. Digital publics and participatory education

    Directory of Open Access Journals (Sweden)

    Brian J. McNely

    2010-10-01

    Full Text Available This article—a collaborative exploration between instructors, students, and members of the broader, digital classroom community—explores how the strategic incorporation of sociotechnical networks and digital technologies facilitates literate practices that extend the classroom in productive ways. The article builds toward coauthors’ reflective practices (Schön, 1983, or “participatory perspectives”, had during an undergraduate English Studies course at a mid-sized, public, American university. Specifically, participants argue that these literate practices afforded not just information sharing, but the opening up of a traditional classroom to include broader digital publics and collaborative knowledge work (Spinuzzi, 2006. Toward this end, we ground literate practice in scholarship that attends to public writing in online spaces, and theoretically frame our argument using Jenkins et al.’s (2006 principles of participatory education. We then detail the specific curricular approach deliberately designed to create digitally connected publics and end with generalizable significance of coauthors’ participatory perspectives.

  14. Hospital information systems: experience at the fully digitized Seoul National University Bundang Hospital.

    Science.gov (United States)

    Yoo, Sooyoung; Hwang, Hee; Jheon, Sanghoon

    2016-08-01

    The different levels of health information technology (IT) adoption and its integration into hospital workflow can affect the maximization of the benefits of using of health IT. We aimed at sharing our experiences and the journey to the successful adoption of health IT over 13 years at a tertiary university hospital in South Korea. The integrated system of comprehensive applications for direct care, support care, and smart care has been implemented with the latest IT and a rich user information platform, achieving the fully digitized hospital. The users experience design methodology, barcode and radio-frequency identification (RFID) technologies, smartphone and mobile technologies, and data analytics were integrated into hospital workflow. Applications for user-centered electronic medical record (EMR) and clinical decision support (CDS), closed loop medication administration (CLMA), mobile EMR and dashboard system for care coordination, clinical data warehouse (CDW) system, and patient engagement solutions were designed and developed to improve quality of care, work efficiency, and patient safety. We believe that comprehensive electronic health record systems and patient-centered smart hospital applications will go a long way in ensuring seamless patient care and experience.

  15. Colloquium: Digital Technologies--Help or Hindrance for the Humanities?

    Science.gov (United States)

    Barker, Elton; Bissell, Chris; Hardwick, Lorna; Jones, Allan; Ridge, Mia; Wolffe, John

    2012-01-01

    This article offers reflections arising from a recent colloquium at the Open University on the implications of the development of digital humanities for research in arts disciplines, and also for their interactions with computing and technology. Particular issues explored include the ways in which the digital turn in humanities research is also a…

  16. Out-of-Print Digital Scanning.

    Science.gov (United States)

    Kellerman, L. Suzanne

    2002-01-01

    Describes the in-house operational procedures developed at the Penn State University libraries to produce facsimiles of hard-to-locate, out-of-print titles using digital scanning technologies. Highlights include identification and selection, costs, copyright issues, interlibrary loan, materials preparation, and future trends. (Author/LRW)

  17. The State of the Digital Humanities: A Report and a Critique

    Science.gov (United States)

    Liu, Alan

    2012-01-01

    The scholarly field of the digital humanities has recently expanded and integrated its fundamental concepts, historical coverage, relationship to social experience, scale of projects, and range of interpretive approaches. All this brings the overall field (including the related area of new media studies) to a tipping point where it has the…

  18. Digital methods for the history of psychology: Introduction and resources.

    Science.gov (United States)

    Fox Lee, Shayna

    2016-02-01

    At the York University Digital History of Psychology Laboratory, we have been working on projects that explore what digital methodologies have to offer historical research in our field. This piece provides perspective on the history and theory of digital history, as well as introductory resources for those who are curious about incorporating these methods into their own work. (PsycINFO Database Record (c) 2016 APA, all rights reserved).

  19. Digital Social Science Lab

    DEFF Research Database (Denmark)

    Svendsen, Michael; Lauersen, Christian Ulrich

    2015-01-01

    At the Faculty Library of Social Sciences (part of Copenhagen University Library) we are currently working intensely towards the establishment of a Digital Social Science Lab (DSSL). The purpose of the lab is to connect research, education and learning processes with the use of digital tools...... at the Faculty of Social Sciences. DSSL will host and facilitate an 80 m2 large mobile and intelligent study- and learning environment with a focus on academic events, teaching and collaboration. Besides the physical settings DSSL has two primary functions: 1. To implement relevant social scientific software...... and hardware at the disposal for students and staff at The Faculty of Social Sciences along with instruction and teaching in the different types of software, e.g. Stata, Nvivo, Atlas.ti, R Studio, Zotero and GIS-software. 2. To facilitate academic events focusing on use of digital tools and analytic software...

  20. On the clustering of particles in an expanding Universe

    International Nuclear Information System (INIS)

    Efstathiou, G.; Eastwood, J.W.

    1981-01-01

    The clustering of particles is investigated in Friedmann models of the Universe using 1000- and 20 000-body numerical simulations. The results of these computations are analysed in terms of the two- and three-point correlation functions, the mean relative peculiar velocity between particle pairs and the mean square peculiar velocity dispersion between pairs. In the case of Einstein-de Sitter models it is found that on scales corresponding to the transition region the results are in rough agreement with simple analytic treatments based on the homogeneous spherical cluster models for the collapse of protoclusters. The results are in conflict with the kinetic theory calculations of Davis and Peebles who studied the problem in the case of an Einstein-de Sitter Universe and found good agreement with observational data. These authors suggest that clusters develop substantial non-radial motions whilst they are still small density fluctuations, so that when a cluster fragments out of the general Hubble expansion, it is already virialized. This 'previrialization' effect does not appear to occur in the numerical models described here. The effects of particle discreteness and two-body relaxation, which are particularly important in the N-body models but neglected in the approach of Davis and Peebles are also examined. (author)

  1. Joining Forces: The Case of Alliant International University

    Science.gov (United States)

    Leslie, Heather

    2013-01-01

    Mergers and acquisitions are a prevalent force in higher education as more colleges and universities are joining forces to expand resources, enhance missions, or prevent closures. This study examines the merger of Alliant University (formerly California School of Professional Psychology) with United States International University to create what…

  2. Deployment of Ahmadu Bello University Zaria, Nigeria Institutional ...

    African Journals Online (AJOL)

    Deployment of Ahmadu Bello University Zaria, Nigeria Institutional Digital Repository. ... that repositories are very important to universities in helping them showcase, manage and capture their intellectual assets as a part of their information service strategy and contribution to universal access to knowledge and information.

  3. AUCC-IDRC Partnership Grant 2013-2016: Canadian University ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    AUCC-IDRC Partnership Grant 2013-2016: Canadian University Student Mobility in North-South Partnerships ... This project will identify promising practices in Canadian universities' student ... Using digital tech to improve life for refugees.

  4. Expandable stents.

    Science.gov (United States)

    Nesbitt, J C; Carrasco, H

    1996-05-01

    Expandable metallic stents are effective in selected patients with malignant or benign airway stenoses. When used for malignant lesions, the primary purpose of the stent is to improve the quality of life; stents are usually chosen for palliation of symptoms in recognition of the low likelihood of success for other therapy. For patients with benign stenoses, the stents provide a permanent source of structural support to alleviate the narrowed segment. The advantages of the expandable metallic stents are as follows: (1) they can be inserted through an endotracheal tube or under local anesthesia with relative simplicity under fluoroscopic guidance; (2) they do not impair the drainage of sputum because ciliary movement is not interrupted; (3) over a period of a few weeks, the meshwork is gradually covered with mucosa as the stent becomes incorporated into the airway wall; (4) ventilation usually is not impaired if the metallic mesh stent covers another nonstenosed bronchus, because the interstices of the stent are nonobstructive; and (5) they are dynamic and continue to expand over time, particularly if concurrent treatment achieves an effect on the lesion that caused stenosis. Disadvantages of the expandable stent include (1) they often are only temporarily effective for tracheobronchial stenosis due to intraluminal tumor or granulation tissue, both of which can grow between the wires; (2) they are considered permanent stents because removal is difficult; and (3) they can be poorly positioned during placement or can become displaced by progressive migration after placement, and they cannot be repositioned. A relative contraindication to insertion is an inflammatory process or infection that can predispose to granulation formation, particularly at the points of maximal contact pressure of the stent to the airway mucosa. In the presence of inflammation, it may be better to use a silicone prosthesis until the inflammatory process subsides and fibrosis occurs. Granulation

  5. Atoms against the universe

    International Nuclear Information System (INIS)

    Senovilla, J.; Raul Vera, M.M.

    1999-01-01

    In Woody Allen's masterpiece Annie Hall the main character is worried about the expansion of the universe. Indeed, during a childhood visit to his psychiatrist, his mother admonishes him: ''You're here in Brooklyn! Brooklyn is not expanding!''. But is that really true? Relativists have attacked this naive question many times and have arrived at different answers. New light has now been thrown on the subject by William Bonnor from Queen Mary and Westfield College in London by considering the influence of the expanding universe on the size of the hydrogen atom (Class. Quantum Grav. 1999 16 1313). According to Bonner's calculations we can conclude that the cosmic expansion does not affect human-scale objects like laboratories and our bodies. In this article the authors explain the reasoning behind this research and its thought provoking consequences. (UK)

  6. Miniature JPL Universal Instrument Bus

    Data.gov (United States)

    National Aeronautics and Space Administration — Develop a Universal Digital Processor Bus architecture using state of the art commercial packaging technologies. This work will transition commercial advanced- yet...

  7. Empowering the creativity of children through the use of digital video technology in workshops

    OpenAIRE

    Bhimani, Janak; 中村, 伊知哉

    2011-01-01

    Nevermore has technology been more pervasive in people's daily lives. Children, by virtue of their age, are the earliest early-adopters of new technology. Digital video technology, especially with developments in the last decade, is now everywhere. However, there is a lack of education and training on how to use digital video technology in order to expand the creative possibilities of children and their imagination. The research in this thesis attempts to present some solutions on how to chal...

  8. Superconductor Digital Electronics: -- Current Status, Future Prospects

    Science.gov (United States)

    Mukhanov, Oleg

    2011-03-01

    Two major applications of superconductor electronics: communications and supercomputing will be presented. These areas hold a significant promise of a large impact on electronics state-of-the-art for the defense and commercial markets stemming from the fundamental advantages of superconductivity: simultaneous high speed and low power, lossless interconnect, natural quantization, and high sensitivity. The availability of relatively small cryocoolers lowered the foremost market barrier for cryogenically-cooled superconductor electronic systems. These fundamental advantages enabled a novel Digital-RF architecture - a disruptive technological approach changing wireless communications, radar, and surveillance system architectures dramatically. Practical results were achieved for Digital-RF systems in which wide-band, multi-band radio frequency signals are directly digitized and digital domain is expanded throughout the entire system. Digital-RF systems combine digital and mixed signal integrated circuits based on Rapid Single Flux Quantum (RSFQ) technology, superconductor analog filter circuits, and semiconductor post-processing circuits. The demonstrated cryocooled Digital-RF systems are the world's first and fastest directly digitizing receivers operating with live satellite signals, enabling multi-net data links, and performing signal acquisition from HF to L-band with 30 GHz clock frequencies. In supercomputing, superconductivity leads to the highest energy efficiencies per operation. Superconductor technology based on manipulation and ballistic transfer of magnetic flux quanta provides a superior low-power alternative to CMOS and other charge-transfer based device technologies. The fundamental energy consumption in SFQ circuits defined by flux quanta energy 2 x 10-19 J. Recently, a novel energy-efficient zero-static-power SFQ technology, eSFQ/ERSFQ was invented, which retains all advantages of standard RSFQ circuits: high-speed, dc power, internal memory. The

  9. Integrating Digital Images into the Art and Art History Curriculum.

    Science.gov (United States)

    Pitt, Sharon P.; Updike, Christina B.; Guthrie, Miriam E.

    2002-01-01

    Describes an Internet-based image database system connected to a flexible, in-class teaching and learning tool (the Madison Digital Image Database) developed at James Madison University to bring digital images to the arts and humanities classroom. Discusses content, copyright issues, ensuring system effectiveness, instructional impact, sharing the…

  10. Smart Objects, Dumb Archives: A User-Centric, Layered Digital Library Framework

    Science.gov (United States)

    Maly, Kurt; Nelson, Michael L.; Zubair, Mohammad

    1999-01-01

    Currently, there exist a large number of superb digital libraries, all of which are, unfortunately, vertically integrated and all presenting a monolithic interface to their users. Ideally, a user would want to locate resources from a variety of digital libraries dealing only with one interface. A number of approaches exist to this interoperability issue exist including: defining a universal protocol for all libraries to adhere to; or developing mechanisms to translate between protocols. The approach we illustrate in this paper is to push down the level of universal protocols to one for digital object communication and for communication for simple archives. This approach creates the opportunity for digital library service providers to create digital libraries tailored to the needs of user communities drawing from available archives and individual publishers who adhere to this standard. We have created a reference implementation based on the hyper text transfer protocol (http) with the protocols being derived from the Dienst protocol. We have created a special class of digital objects called buckets and a number of archives based on a NASA collection and NSF funded projects. Starting from NCSTRL we have developed a set of digital library services called NCSTRL+ and have created digital libraries for researchers, educators and students that can each draw on all the archives and individually created buckets.

  11. Digitally Controlled Converter with Dynamic Change of Control Law and Power Throughput

    DEFF Research Database (Denmark)

    Nesgaard, Carsten; Andersen, Michael Andreas E.; Nielsen, Nils

    2003-01-01

    the substitution of analog controllers with their digital counterparts are considered. The outline of the paper is divided into two segments – the first being an experimental analysis of the timing behavior by means of code optimization – the second being an examination of the dynamics of incorporating two control......With the continuous development of faster and cheaper microprocessors the field of applications for digital control is constantly expanding. Based on this trend the paper at hand describes the analysis and implementation of multiple control laws within the same controller. Also, implemented within...

  12. A customized digital monitoring and display system for nonpower reactors

    International Nuclear Information System (INIS)

    Ficaro, E.P.; Wehe, D.K.

    1989-01-01

    A digital data acquisition system for monitoring plant variables has been designed and implemented at the University of Michigan's Ford Nuclear Reactor (FNR), a 2-MW open-pool research reactor. The digital data provided by this system will be useful for: improved operator training, real-time experimental calculations, noise analysis, closed-loop control, and expert system applications. This paper describes the analog-to-digital (A/D) transitions and the associated applications and benefits experienced

  13. Designing for Dialogue and Digitality in Higher and Continuing Education

    DEFF Research Database (Denmark)

    Sorensen, Elsebeth Korsgaard; Kjærgaard, Thomas

    2016-01-01

    for studying these design aspects is constituted by learning designs from, both a University context and a University College context. The findings and discussion resulting from the analysis suggest that a meta-communicative learning-to-learn (L2L) approach to dialogue in the pedagogic aspects of the learning...... design may be fruitful in highlighting and promoting the establishment and maintenance of a collaborative digital dialogue that is conducive to deep learning in digital CoPs unfolding in VLEs. Consequently, we suggest development of hybrid designs that synthesise the dialogical advantages of online......This study investigates and contrasts three scenarios of further education; presence lessons and two types of blended learning. It addresses the conceptual challenge of creating learning designs for online learning communities of practice (COPs) with a focus on 'collaborative digital dialogue...

  14. The expansion rate and size of the universe

    CERN Multimedia

    Freedman, Wendy L

    1998-01-01

    The age, evolution and fate of the universe depend on just how fast it is expanding. By measuring the size of the universe using a variety of new techniques, astronomers have recently improved estimates of the expansion rate

  15. Expanding Science Teacher Preparation: the Role of External Funding

    Science.gov (United States)

    Lindberg, John M.; Vokos, S.; Seeley, L.; Close, E.

    2006-12-01

    The Department of Physics and the School of Education at Seattle Pacific University are in the early stages of expanding the scope and reach of our science teacher preparation. We will describe how we are putting the puzzle together and our results to date. * Supported in part by NSF grant #ESI-0455796, NSF grant # DUE-0630460, NSF grant DUE-0310583, The Boeing Corporation, PhysTec and the SPU Science Initiative.

  16. Beyond the Scanned Image: A Needs Assessment of Scholarly Users of Digital Collections

    Science.gov (United States)

    Green, Harriett E.; Courtney, Angela

    2015-01-01

    This paper presents an analysis of how humanities scholars use digital collections in their research and the ways in which digital collections could be enhanced for scholarly use. The authors surveyed and interviewed humanities faculty from twelve research universities about their research practices with digital collections and present analysis of…

  17. Virtual microscopy beyond the pyramids, applications of WSI in Cairo University for E-education & telepathology.

    Science.gov (United States)

    Ayad, Essam; Yagi, Yukako

    2012-01-01

    Telepathology, the practice of pathology at a long distance, has advanced continuously since 1986. The progress of telepathology passed through four stages: Static, Dynamic, Hybrid & Whole Slide Imaging. A pilot project between the Italian Hospital in Cairo & the Civico Hospital in Palermo was completed successfully, applying the static & dynamic techniques of telepathology. This project began in 2003 and continued till now. In 2004, centers in Venice, London and Pittsburgh participated actively in our project. Over eight years we consulted on many problematic pathological cases with specialized pathological centers in Italy, U.K. & U.S.A. In addition to the highly specialized scientific value, we saved a lot of time and money. We concluded from our experience that telepathology is a very useful and applicable tool for additional consulting on difficult pathological cases especially for emerging countries. In view of this success we have already established our Digital Telepathology Unit in Cairo University, using the WSI technique in teaching which was greatly successful and encouraged us to build a huge digital pathology library which will expand our telepathology & E-learning programs to cover staff and students in Egypt and Eastern Mediterranean.

  18. The Multi-Universe Cosmos. The Origin and Fate of our Universe

    Science.gov (United States)

    Velan, Karel

    18 billion yers ago our Universe, one of many in the Cosmos, emerged from a hot, dense fireball of matter and energy created in the 4-dimensional cosmic space-time from virtual particles receiving their rest mass from a powerful primordial radiation field, the missing link to any viable theory of creation. The cloud of elementary particles and radiation collapsed by gravity into a fireball until its trappped thermal radiation caused a titanic explosion that initiated the expansion and evolution of ours universe. As the universe expanded and cooled it spawned galaxies, stars, planets and life. Proven laws of physics, observationsl data and mathematical computations support the new cosmological model which proposes a large number of universes in the cosmos in varying stages of evolution

  19. The Power of Montessori's Positive Psychology in an Expanding Universe.

    Science.gov (United States)

    Haines, Annette

    1999-01-01

    Relates Montessori theory of development with the concept of connection to the universe and natural world, noting Montessori education's role in nurturing reestablished connection with the natural world. Describes events leading to a fulfilled life as part of psychological normalization, noting the importance of identifying positive tendencies of…

  20. Unemployment, Entrepreneurial Education and Mega Universities: Challenges to Expanding Access in Education in Nigeria University

    Science.gov (United States)

    Undie, John Atewhoble; Okafor, Victor

    2014-01-01

    In fundamental economics, individuals acquired education for two broad reasons, as an investment and as consumption. The investment function of education has continued to create tension for job search leading to cases of unemployment. Entrepreneurship education and establishment of mega universities have been identified as panaceas. This paper…

  1. Digital ethnicity: discussion of a concept and implications for education

    Directory of Open Access Journals (Sweden)

    Nan B. Adams

    2011-09-01

    Full Text Available Interaction with the rapidly expanding digital technologies for education, work, and play has drastically changed the processes and practices of world populations. As societies evolve in response to these new communication and calculation tools, the need arises to understand the sometimes unique but increasingly common change in cultures. The Digital Ethnicity Scale (DES, utilizing Longstreet’s (1978, Aspects of Ethnicity (New York: Teachers College Press model of the Aspects of Ethnicity, was developed to describe the emergence of new cultural patterns of behavior that result from the influence of human interaction with digital communication technologies (Adams, DeVaney, and Longstreet (2010 Comput. Hum. Behav. 26(6: 1822–1830. Longstreet’s definition of ethnicity focuses on cultural development during the earliest stages of human development, prior to the onset of children’s abstract thinking. The ultimate goal for the development of the DES is to describe those aspects of digital ethnicity and collect these descriptions along with demographic data to achieve profiles of various digital ethnicities. A discussion of the guiding concept and overview of the development of the DES seeks to present a description of these digital ethnic profiles that may provide insight into the educational needs of rapidly changing societal groupings with hopes of providing guidance for educational practice.

  2. Impacting Academic Achievement with Student Learners Teaching Digital Storytelling to Others: The ATTTCSE Digital Video Project

    Science.gov (United States)

    Figg, Candace; McCartney, Robin

    2010-01-01

    University researchers, teacher candidates, language and technology instructors, student learners, and families from diverse backgrounds partnered in an invitational teaching/learning experience--middle school student learners teaching their VIPs (very important persons) how to create stories and construct digital movies with reference to their…

  3. Educating for Digital Futures: What the Learning Strategies of Digital Media Professionals Can Teach Higher Education

    Science.gov (United States)

    Bridgstock, Ruth

    2016-01-01

    This article explores how universities might engage more effectively with the imperative to develop students' twenty-first century skills for the information society, by examining learning challenges and professional learning strategies of successful digital media professionals. The findings of qualitative interviews with professionals from…

  4. Internet and Africa: from the gap to digital hope. Networks and communication freedom / Internet y África: de la brecha a la esperanza digital. Redes, libertades y comunicación

    Directory of Open Access Journals (Sweden)

    Antonio García Jiménez

    2013-11-01

    Full Text Available With a critical and comparative perspective, the article outlines the digital universe reality in Africa, taking into account regional differences. Descriptively, we are interested in issues such as Internet access situation, policies and existing regulatory infrastructure, the digital economy, the impact of new media, e-government initiatives and digital citizen participation, together with some aspects of the cultural colonization that may occur as a result of the universalization of a clearly westernized Internet.Con una mirada crítica y comparativa se esboza la realidad del universo digital en África, teniendo en cuenta las diferencias regionales existentes. De modo descriptivo, nos interesamos por cuestiones como la situación del acceso a Internet, las políticas de infraestructuras y regulatorias existentes, la economía digital, el impacto de los nuevos medios, las iniciativas de gobierno electrónico y participación ciudadana digital, y algunos aspectos de la colonización cultural que se puede producir a cuentas de una red claramente occidentalizada.

  5. A survey of contemporary enterprise storage technologies from a digital forensics perspective

    Directory of Open Access Journals (Sweden)

    Gregory H. Carlton

    2011-09-01

    Full Text Available As the proliferation of digital computational systems continue to expand, increasingly complex technologies emerge, including those regarding large, enterprise-wide, information storage and retrieval systems. Within this study, we examine four contemporary enterprise storage technologies. Our examination of these technologies is presented with an overview of the technological features of each offering and then followed with a discussion of the impact of these technologies on digital forensics methods, particularly regarding forensic data acquisition. We offer a general opinion concerning a recommended data acquisition method when faced with the task of obtaining a forensic image of data contained within these technologies, we discuss limitations of our study, and lastly, we suggest areas in which additional research would benefit the field of digital forensics.

  6. The Impact of Digital Mobile Devices in Higher Education

    Science.gov (United States)

    Sevillano-García, M.ª Luisa; Vázquez-Cano, Esteban

    2015-01-01

    This research examined the acceptance, incidence, and use of digital mobile devices (tablets and smartphones) among university students in the European Higher Education Area (EHEA). The research was contextualized in a sample of 419 students from three Spanish public universities. Through a quantitative methodology, we identified the factors and…

  7. CERN-UNESCO School on Digital Libraries

    CERN Multimedia

    2016-01-01

    The CERN-UNESCO School on Digital libraries 2016 was held in Kumasi, Ghana, from 28th November to 2nd December 2016. The school was organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO) and the European Organization for Nuclear Research (CERN) and was hosted by Kwame Nkrumah University of Science and Technology. The purpose of the school was to deepen the participants’ understanding of digital libraries, expose new trends in scientific publishing and emphasize a set of principles related to open access, both for data and publications.

  8. Digital systems from logic gates to processors

    CERN Document Server

    Deschamps, Jean-Pierre; Terés, Lluís

    2017-01-01

    This textbook for a one-semester course in Digital Systems Design describes the basic methods used to develop “traditional” Digital Systems, based on the use of logic gates and flip flops, as well as more advanced techniques that enable the design of very large circuits, based on Hardware Description Languages and Synthesis tools. It was originally designed to accompany a MOOC (Massive Open Online Course) created at the Autonomous University of Barcelona (UAB), currently available on the Coursera platform. Readers will learn what a digital system is and how it can be developed, preparing them for steps toward other technical disciplines, such as Computer Architecture, Robotics, Bionics, Avionics and others. In particular, students will learn to design digital systems of medium complexity, describe digital systems using high level hardware description languages, and understand the operation of computers at their most basic level. All concepts introduced are reinforced by plentiful illustrations, examples, ...

  9. Academic Medical Centers as digital health catalysts.

    Science.gov (United States)

    DePasse, Jacqueline W; Chen, Connie E; Sawyer, Aenor; Jethwani, Kamal; Sim, Ida

    2014-09-01

    Emerging digital technologies offer enormous potential to improve quality, reduce cost, and increase patient-centeredness in healthcare. Academic Medical Centers (AMCs) play a key role in advancing medical care through cutting-edge medical research, yet traditional models for invention, validation and commercialization at AMCs have been designed around biomedical initiatives, and are less well suited for new digital health technologies. Recently, two large bi-coastal Academic Medical Centers, the University of California, San Francisco (UCSF) through the Center for Digital Health Innovation (CDHI) and Partners Healthcare through the Center for Connected Health (CCH) have launched centers focused on digital health innovation. These centers show great promise but are also subject to significant financial, organizational, and visionary challenges. We explore these AMC initiatives, which share the following characteristics: a focus on academic research methodology; integration of digital technology in educational programming; evolving models to support "clinician innovators"; strategic academic-industry collaboration and emergence of novel revenue models. Copyright © 2014 Elsevier Inc. All rights reserved.

  10. Digital teaching file. Concept, implementation, and experiences in a university setting

    International Nuclear Information System (INIS)

    Trumm, C.; Wirth, S.; Treitl, M.; Lucke, A.; Kuettner, B.; Pander, E.; Clevert, D.-A.; Glaser, C.; Reiser, M.; Dugas, M.

    2005-01-01

    Film-based teaching files require a substantial investment in human, logistic, and financial resources. The combination of computer and network technology facilitates the workflow integration of distributing radiologic teaching cases within an institution (intranet) or via the World Wide Web (Internet). A digital teaching file (DTF) should include the following basic functions: image import from different sources and of different formats, editing of imported images, uniform case classification, quality control (peer review), a controlled access of different user groups (in-house and external), and an efficient retrieval strategy. The portable network graphics image format (PNG) is especially suitable for DTFs because of several features: pixel support, 2D-interlacing, gamma correction, and lossless compression. The American College of Radiology (ACR) ''Index for Radiological Diagnoses'' is hierarchically organized and thus an ideal classification system for a DTF. Computer-based training (CBT) in radiology is described in numerous publications, from supplementing traditional learning methods to certified education via the Internet. Attractiveness of a CBT application can be increased by integration of graphical and interactive elements but makes workflow integration of daily case input more difficult. Our DTF was built with established Internet instruments and integrated into a heterogeneous PACS/RIS environment. It facilitates a quick transfer (DICOM S end) of selected images at the time of interpretation to the DTF and access to the DTF application at any time anywhere within the university hospital intranet employing a standard web browser. A DTF is a small but important building block in an institutional strategy of knowledge management. (orig.) [de

  11. Cosmological D-instantons and cyclic universes

    International Nuclear Information System (INIS)

    Bergshoeff, E A; Collinucci, A; Roest, D; Russo, J G; Townsend, P K

    2005-01-01

    For models of gravity coupled to hyperbolic sigma models, such as the metric-scalar sector of IIB supergravity, we show how smooth trajectories in the 'augmented target space' connect FLRW cosmologies to non-extremal D-instantons through a cosmological singularity. In particular, we find closed cyclic universes that undergo an endless sequence of big-bang to big-crunch cycles separated by instanton 'phases'. We also find 'big-bounce' universes in which a collapsing closed universe bounces off its cosmological singularity to become an open expanding universe

  12. Gravity and count probabilities in an expanding universe

    Science.gov (United States)

    Bouchet, Francois R.; Hernquist, Lars

    1992-01-01

    The time evolution of nonlinear clustering on large scales in cold dark matter, hot dark matter, and white noise models of the universe is investigated using N-body simulations performed with a tree code. Count probabilities in cubic cells are determined as functions of the cell size and the clustering state (redshift), and comparisons are made with various theoretical models. We isolate the features that appear to be the result of gravitational instability, those that depend on the initial conditions, and those that are likely a consequence of numerical limitations. More specifically, we study the development of skewness, kurtosis, and the fifth moment in relation to variance, the dependence of the void probability on time as well as on sparseness of sampling, and the overall shape of the count probability distribution. Implications of our results for theoretical and observational studies are discussed.

  13. Glacier Research Digital Science Communication Evolution 1996-2014

    Science.gov (United States)

    Pelto, M. S.

    2014-12-01

    This talk will focus on the changes in communicating science in the last 20 years from the perspective of the same research project. Essentially the rapid innovation in online communication requires the scientist learning and utilizing a new platform of communication each year. To maintain relevant visibility and ongoing research activities requires finding synergy between the two. I will discuss how digital communication has inspired my research efforts. This talk will also examine overall visitation and media impact metrics over this period. From developing a highly visible glacier research web page in 1996, to writing more than 400 blog posts since 2008, and in 2014 utilizing a videographer and illustration artist in the field, this is the story of one scientist's digital communication-media evolution. The three main observations are that: 1) Overall visitation has not expanded as rapidly in the last decade. 2) Contact and cooperation with colleagues has expanded quite rapidly since 2008. 3) Media impact peaked in 2005, but is nearing that peak again. The key factors in visibility and media impact for a "small market" research institution/project has been providing timely and detailed content to collaborative sites, such as RealClimate, BAMS State of the Climate, Climate Denial Crock of the Week, and Skeptical Science that can then be repurposed by the media. A review of the visitor metrics to the digital glacier sites I have maintained from 1996-2014 indicate visibility of each platform has a similar growth curve, transitioning to a plateau, but overall visitation does not increase in kind with the increase in number of platforms. Media metrics is more event driven and does not follow the visitor metric pattern.

  14. Non-canonical transcription initiation: the expanding universe of transcription initiating substrates.

    Science.gov (United States)

    Barvík, Ivan; Rejman, Dominik; Panova, Natalya; Šanderová, Hana; Krásný, Libor

    2017-03-01

    RNA polymerase (RNAP) is the central enzyme of transcription of the genetic information from DNA into RNA. RNAP recognizes four main substrates: ATP, CTP, GTP and UTP. Experimental evidence from the past several years suggests that, besides these four NTPs, other molecules can be used to initiate transcription: (i) ribooligonucleotides (nanoRNAs) and (ii) coenzymes such as NAD+, NADH, dephospho-CoA and FAD. The presence of these molecules at the 5΄ ends of RNAs affects the properties of the RNA. Here, we discuss the expanding portfolio of molecules that can initiate transcription, their mechanism of incorporation, effects on RNA and cellular processes, and we present an outlook toward other possible initiation substrates. © FEMS 2016. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  15. Contact in an expanding universe: an instructive exercise in dynamic geometry

    International Nuclear Information System (INIS)

    Zimmerman, Seth

    2010-01-01

    The particular problem solved in this paper is that of calculating the time required to overtake a distant object receding under cosmic expansion, and the speed at which that object is passed. This is a rarely investigated problem leading to some interesting apparent paradoxes. We employ the problem to promote a deeper understanding of the dynamic geometry behind the expansion of space in three eras, especially for physics undergraduates. We do not utilize the standard cosmological formulae, but deliberately take a simpler approach, comprehensible to any student comfortable with differentials. This should offer an intuitive preparation for later courses in general relativity. The paper can be read straight through, or offered to a class in segments as problems to investigate. The overall intention is to leave students with a more tangible grasp of expanding space.

  16. Contact in an expanding universe: an instructive exercise in dynamic geometry

    Science.gov (United States)

    Zimmerman, Seth

    2010-11-01

    The particular problem solved in this paper is that of calculating the time required to overtake a distant object receding under cosmic expansion, and the speed at which that object is passed. This is a rarely investigated problem leading to some interesting apparent paradoxes. We employ the problem to promote a deeper understanding of the dynamic geometry behind the expansion of space in three eras, especially for physics undergraduates. We do not utilize the standard cosmological formulae, but deliberately take a simpler approach, comprehensible to any student comfortable with differentials. This should offer an intuitive preparation for later courses in general relativity. The paper can be read straight through, or offered to a class in segments as problems to investigate. The overall intention is to leave students with a more tangible grasp of expanding space.

  17. Strengthening and expanding the capacity of health worker education in Zambia.

    Science.gov (United States)

    Michelo, Charles; Zulu, Joseph Mumba; Simuyemba, Moses; Andrews, Benjamin; Katubulushi, Max; Chi, Benjamin; Njelesani, Evariste; Vwalika, Bellington; Bowa, Kasonde; Maimbolwa, Margaret; Chipeta, James; Goma, Fastone; Nzala, Selestine; Banda, Sekelani; Mudenda, John; Ahmed, Yusuf; Hachambwa, Lotti; Wilson, Craig; Vermund, Sten; Mulla, Yakub

    2017-01-01

    Zambia is facing a chronic shortage of health care workers. The paper aimed at understanding how the Medical Education Partnership Initiative (MEPI) program facilitated strengthening and expanding of the national capacity and quality of medical education as well as processes for retaining faculty in Zambia. Data generated through documentary review, key informant interviews and observations were analyzed using a thematic approach. The MEPI program triggered the development of new postgraduate programs thereby increasing student enrollment. This was achieved by leveraging of existing and new partnerships with other universities and differentiating the old Master in Public Health into specialized curriculum. Furthermore, the MEPI program improved the capacity and quality of training by facilitating installation and integration of new technology such as the eGranary digital library, E-learning methods and clinical skills laboratory into the Schools. This technology enabled easy access to relevant data or information, quicker turn around of experiments and enhanced data recording, display and analysis features for experiments. The program also facilitated transforming of the academic environment into a more conducive work place through strengthening the Staff Development program and support towards research activities. These activities stimulated work motivation and interest in research by faculty. Meanwhile, these processes were inhibited by the inability to upload all courses on to Moodle as well as inadequate operating procedures and feedback mechanisms for the Moodle. Expansion and improvement in training processes for health care workers requires targeted investment within medical institutions and strengthening local and international partnerships.

  18. Modelling the implications of moving towards universal coverage in Tanzania.

    Science.gov (United States)

    Borghi, Josephine; Mtei, Gemini; Ally, Mariam

    2012-03-01

    A model was developed to assess the impact of possible moves towards universal coverage in Tanzania over a 15-year time frame. Three scenarios were considered: maintaining the current situation ('the status quo'); expanded health insurance coverage (the estimated maximum achievable coverage in the absence of premium subsidies, coverage restricted to those who can pay); universal coverage to all (government revenues used to pay the premiums for the poor). The model estimated the costs of delivering public health services and all health services to the population as a proportion of Gross Domestic Product (GDP), and forecast revenue from user fees and insurance premiums. Under the status quo, financial protection is provided to 10% of the population through health insurance schemes, with the remaining population benefiting from subsidized user charges in public facilities. Seventy-six per cent of the population would benefit from financial protection through health insurance under the expanded coverage scenario, and 100% of the population would receive such protection through a mix of insurance cover and government funding under the universal coverage scenario. The expanded and universal coverage scenarios have a significant effect on utilization levels, especially for public outpatient care. Universal coverage would require an initial doubling in the proportion of GDP going to the public health system. Government health expenditure would increase to 18% of total government expenditure. The results are sensitive to the cost of health system strengthening, the level of real GDP growth, provider reimbursement rates and administrative costs. Promoting greater cross-subsidization between insurance schemes would provide sufficient resources to finance universal coverage. Alternately, greater tax funding for health could be generated through an increase in the rate of Value-Added Tax (VAT) or expanding the income tax base. The feasibility and sustainability of efforts to

  19. The Virtual Naval Hospital: the digital library as knowledge management tool for nomadic patrons.

    Science.gov (United States)

    D'Alessandro, Michael P; D'Alessandro, Donna M; Bakalar, Richard S; Ashley, Denis E; Hendrix, Mary J C

    2005-01-01

    To meet the information needs of isolated primary care providers and their patients in the US Navy, a digital health sciences library, the Virtual Naval Hospital, was created through a unique partnership between academia and government. The creation of the digital library was heavily influenced by the principles of user-centered design and made allowances for the nomadic nature of the digital library's patrons and the heterogeneous access they have to Internet bandwidth. The result is a digital library that has been in operation since 1997, continues to expand in size, is heavily used, and is highly regarded by its patrons. The digital library is dedicated to delivering the right information at the right time to the right person so the right decision can be made, and therefore the Virtual Naval Hospital functions as a knowledge-management system for the US Navy Bureau of Medicine and Surgery.

  20. Video - Personal Competence Manager (Digital Cinema pilot)

    NARCIS (Netherlands)

    Santos, Patricia

    2008-01-01

    Video demonstrating the PCM (version year 2007) in the context of the Digital Cinema pilot. Elaborated for a eLearning Seminar within the International Master on Communication and Education (Autonomous University of Barcelona, academic year 2008)

  1. Comparison of visibility for four self-expanding nitinol bare stents in vitro

    International Nuclear Information System (INIS)

    Wiesinger, Benjamin; Stutz, Alexander; Schmehl, Joerg; Groezinger, Gerd; Claussen, Claus Detlef; Wiskirchen, Jakub

    2012-01-01

    Background Sufficient radiopacity of stents is a prerequisite for safe interventions and minimization of the radiation dose for the patient and the interventionist. Modern nitinol stents are considered less radiopaque compared to formerly used stents. Purpose To evaluate the objective detection rate (ODR) and the subjective radiopacity score (SRS) of four self-expanding nitinol stents with their markers on a phantom human pelvis. Material and Methods We evaluated the ODR (as a percentage of correctly identified stents) and the SRS (on a scale from 0 = not visible to 4 = excellent visibility) for four self-expanding nitinol stents (SinusSuperflex, SMART, Luminexx, Zilver) with 8 mm diameter and 40 mm length. Stents were placed on a phantom human pelvis and images of the stents were taken in four different positions (right and left lumbosacral joint and near the right and left limbus acetabuli) using the following modes: spotfilm, pulsed fluoroscopy (4, 7.5, 15, and 30 pulses/min) and at three different digital magnification modes. Dose area products (DAPs) were assessed. Results ODR and SRS, respectively, were significantly increased for the SMART stent compared to all other tested stents (P < 0.05): SMART 93.53% and 2.43, SinusSuperflex 90.81% and 2.21, Luminexx 90.39% and 2.20, and Zilver 89.28% and 2.21. ODR was significantly reduced in position 3 where the bone overlap was more pronounced for all stents (detection rates 77.14-79.56%). An increase in magnification significantly improved the ODR and SRS for all stents (70.33-99.25% and 1.07-3.28, respectively, P < 0.05). Increased pulsing frequency did not improve the ODR of the various stents but did increase the DAP. Conclusion The SMART stent had the best overall performance. In the presence of bone overlap, all self-expanding nitinol stents had poor results. Increased pulsing frequency did not improve ODR or SRS but did increase the DAP. Use of digital magnification modes had no effect on DAP increasing ODR

  2. Implementation of Upright Digital Breast Tomosynthesis-guided Stereotactic Biopsy.

    Science.gov (United States)

    Omofoye, Toma S; Martaindale, Sarah; Teichgraeber, Davis C; Parikh, Jay R

    2017-11-01

    With growing adoption of digital breast tomosynthesis, an increasing number of imaging abnormalities are being identified only by tomosynthesis. Upright digital breast tomosynthesis-guided stereotactic biopsy is a proven method for sampling these abnormalities as well as abnormalities traditionally evaluated using conventional stereotactic biopsy. In this article, we describe the technique of upright digital breast tomosynthesis-guided stereotactic biopsy and outline a systematic operational approach to implementation of this technique in clinical radiology practices. Copyright © 2017 The Association of University Radiologists. Published by Elsevier Inc. All rights reserved.

  3. Authoring of digital games via card games

    DEFF Research Database (Denmark)

    Valente, Andrea; Marchetti, Emanuela

    2014-01-01

    Literature and previous studies show that creative play is easy to emerge when children interact with tangible, low-tech toys and games than with digital games. This paradoxical situation is linked to the long-standing problem of end-users (or players) authoring of digital contents and systems. We...... are to show how card games can represent digital games, how playful play can emerge in card games and digital games, and to begin defining a new way to express game behavior without the use of universal programming languages....... propose a new scenario in which trading card games help making sense and re-design computer games, to support players express themselves aesthetically and in a highly creative way. Our aim is to look for a middle ground between players becoming programmers and simply editing levels. The main contributions...

  4. Black holes in the Universe: Generalized Lemaitre-Tolman-Bondi solutions

    International Nuclear Information System (INIS)

    Gao Changjun; Chen Xuelei; Shen Yougen; Faraoni, Valerio

    2011-01-01

    We present new exact solutions which presumably describe black holes in the background of a spatially flat, pressureless dark-matter- or dark matter plus dark energy (DM+DE)- or quintom-dominated Universe. These solutions generalize Lemaitre-Tolman-Bondi metrics. For a dark-matter- or (DM+DE)-dominated universe, the area of the black hole apparent horizon (AH) decreases with the expansion of the Universe while that of the cosmic AH increases. However, for a quintom-dominated universe, the black hole AH first shrinks and then expands, while the cosmic AH first expands and then shrinks. A (DM+DE)-dominated universe containing a black hole will evolve to the Schwarzschild-de Sitter solution with both AHs approaching constant size. In a quintom-dominated universe, the black hole and cosmic AHs will coincide at a certain time, after which the singularity becomes naked, violating cosmic censorship.

  5. Measurement Invariance of the Digital Natives Assessment Scale across Gender in a Sample of Turkish University Students

    Science.gov (United States)

    Ursavas, Ömer Faruk; Kabakçi Yurdakul, Isil; Türk, Mesut; Mcilroy, David

    2016-01-01

    With reference to the digital natives' debate, there is a gap on digital natives' characteristics. To fill this gap, the Digital Natives Assessment Scale was developed to measure students' assessment of the degree to which they perceived themselves to possess the attributes of digital natives. The scale was developed within the Turkish language…

  6. Nearly scale-invariant spectrum of adiabatic fluctuations may be from a very slowly expanding phase of the Universe

    International Nuclear Information System (INIS)

    Piao Yunsong; Zhou, E.

    2003-01-01

    In this paper we construct an expanding phase with phantom matter, in which the scale factor expands very slowly but the Hubble parameter increases gradually, and assume that this expanding phase could be matched to our late observational cosmology by the proper mechanism. We obtain the nearly scale-invariant spectrum of adiabatic fluctuations in this scenario; different from the simplest inflation and usual ekpyrotic or cyclic scenario, the tilt of the nearly scale-invariant spectrum in this scenario is blue. Although there exists an uncertainty surrounding the way in which the perturbations propagate through the transition in our scenario, which is dependent on the details of possible 'bounce' physics, compared with inflation and the ekpyrotic or cyclic scenario, our work may provide another feasible cosmological scenario generating the nearly scale-invariant perturbation spectrum

  7. Being Human Today: A Digital Storytelling Pedagogy for Transcontinental Border Crossing

    Science.gov (United States)

    Stewart, Kristian; Gachago, Daniela

    2016-01-01

    This article reports the findings of a collaborative digital storytelling project titled "Being Human Today," a multimodal curricular initiative that was implemented simultaneously in both a South African and an American university classroom in 2015. By facilitating dialogue and the sharing of digital stories by means of a closed…

  8. Digital Co-production in Archaeology. An editorial

    Directory of Open Access Journals (Sweden)

    Chiara Bonacchi

    2017-12-01

    Full Text Available This special issue focuses on digitally-enabled co-production in archaeology, by bringing together papers that were presented at the session Communication as Collaboration: Digital Methods, Experiences and Values, organised at the 21st Annual Meeting of the European Association of Archaeologists (University of Glasgow, 2015. The session was part of the Communicating Archaeology thematic cluster, which was partly inspired by the first published volume dedicated specifically to the topic of digital public engagement in archaeology (Bonacchi 2012. In that session and in this collection, we have been exploring communication as the collaborative construction of materials and interpretations rather than the dissemination of content at given stages of the archaeological research process (Bonacchi and Moshenska 2015.

  9. Rotation of Galaxies within Gravity of the Universe

    Directory of Open Access Journals (Sweden)

    Arto Annila

    2016-05-01

    Full Text Available Rotation of galaxies is examined by the general principle of least action. This law of nature describes a system in its surroundings, here specifically a galaxy in the surrounding Universe. According to this holistic theory the gravitational potential due to all matter in the expanding Universe relates to the universal curvature which, in turn, manifests itself as the universal acceleration. Then the orbital velocities from the central bulge to distant perimeters are understood to balance both the galactic and universal acceleration. Since the galactic acceleration decreases with distance from the galaxy’s center to its luminous edge, the orbital velocities of ever more distant stars and gas clouds tend toward a value that tallies the universal acceleration. This tiny term has been acknowledged earlier by including it as a parameter in the modified gravitational law, but here the tiny acceleration is understood to result from the gravitational potential that spans across the expanding Universe. This resolution of the galaxy rotation problem is compared with observations and contrasted with models of dark matter. Also, other astronomical observations that have been interpreted as evidence for dark matter are discussed in light of the least-action principle.

  10. How can the digital library contribute to employability?

    DEFF Research Database (Denmark)

    Harbo, Karen; Jensen, Thomas Skov

    2016-01-01

    platforms. A partnership is made between the digital library (partner libraries involved) and the virtual learning environment (educational institutions), based on the above definition of employability. This is done within the framework of Learning Management Systems (LMS) and Massive Open Online Courses......The DEFF project, E-learning, Information literacy and Library services, supports the education policy ambition of enhancing links between education and employment. The project consortium includes libraries from all Danish universities, university colleges and one business academy. Timeframe...... for the project is 2014-16. The project understands employability as: In close cooperation with study programmes libraries will strengthen students’ ability to perform independently and critically in a professional context by being able to identify, collect, evaluate, organize and present information via digital...

  11. How can the digital library contribute to employability?

    DEFF Research Database (Denmark)

    Harbo, Karen; Jensen, Thomas Skov

    2016-01-01

    The DEFF project, E-learning, Information literacy and Library services, supports the education policy ambition of enhancing links between education and employment. The project consortium includes libraries from all Danish universities, university colleges and one business academy. Timeframe...... for the project is 2014-16. The project understands employability as: In close cooperation with study programmes libraries will strengthen students’ ability to perform independently and critically in a professional context by being able to identify, collect, evaluate, organize and present information via digital...... platforms. A partnership is made between the digital library (partner libraries involved) and the virtual learning environment (educational institutions), based on the above definition of employability. This is done within the framework of Learning Management Systems (LMS) and Massive Open Online Courses...

  12. Total filmless digital radiology service

    International Nuclear Information System (INIS)

    Mun, S.K.; Goeringer, F.; Benson, H.; Horii, S.C.

    1989-01-01

    The completion of a comprehensive picture archiving and communication system (PACS) at Georgetown University Hospital has allowed us to identify a number of technical, administrative, personnel, and operational issues that will affect a total digital radiology service. With a hospital-wide digital imaging network system, computer simulation of communications and storage options, and economic modeling, we have developed a feasibility study and implementation strategy for the smooth transition to a nearly filmless radiology service over the next several years. This paper describes the technical and operational requirements for various database operations, workstations (used in diagnosis, review, and education), and communications. Site and installation planning, personnel training, and transition operations are discussed

  13. Expanding the Traditional Physiology Class with Asynchronous Online Discussions and Collaborative Projects

    Science.gov (United States)

    Taradi, Suncana Kukolja; Taradi, Milan

    2004-01-01

    Discussion and writing are very powerful ways to support learning. This article describes the use of a free, synchronous online forum to expand student-teacher discussions beyond the time/place constraints of the physical physiology classroom. The main participants were medical students enrolled in physiology class at the University of Zagreb…

  14. Engagement and the Twenty-First Century University.

    Science.gov (United States)

    McGrath, C. Peter

    1999-01-01

    Argues for redefining the mission of the 21st-century university in order to focus on one overriding objective serving the public. Effective, expanding engagement with communities provides expertise and service to communities in ways in which universities are co-equal partners with other organizations and interests; it also provides rich…

  15. Fermilab | Science | Questions for the Universe | The Birth of the Universe

    Science.gov (United States)

    theory of cosmic inflation has offered a compelling explanation of the start of the big bang. According their nature at the start of the big bang. Does string theory smooth the initial singularity? Which inflation. After the big bang, the universe expanded and cooled to reach its present state. Along the way

  16. Partnering for Discoverability: Knitting Archival Finding Aids to Digitized Material Using a Low Tech Digital Content Linking Process

    Directory of Open Access Journals (Sweden)

    Liz Woolcott

    2016-10-01

    Full Text Available As libraries continue to ramp up digitization efforts for unique archival and special collections material, the segregation of archival finding aids from their digitized counterparts presents an accumulating discoverability problem for both patrons and library staff. For Utah State University (USU Libraries, it became evident that a system was necessary to connect both new and legacy finding aids with their digitized content to improve use and discoverability. Following a cross-departmental workflow analysis involving the Special Collections, Cataloging and Metadata, and Digital Initiatives departments, a process was created for semi-automating the batch linking of item and folder level entries in EAD finding aids to the corresponding digitized material in CONTENTdm. In addition to the obvious benefit of linking content, this cross-departmental process also allowed for the implementation of persistent identifiers and the enhancement of finding aids using the more robust metadata that accompanies digitized material. This article will provide a detailed overview of the process, as well as describe how the three departments at USU have worked together to identify key stakeholders, develop the procedures, and address future developments.

  17. Black Hole Universe Model and Dark Energy

    Science.gov (United States)

    Zhang, Tianxi

    2011-01-01

    Considering black hole as spacetime and slightly modifying the big bang theory, the author has recently developed a new cosmological model called black hole universe, which is consistent with Mach principle and Einsteinian general relativity and self consistently explains various observations of the universe without difficulties. According to this model, the universe originated from a hot star-like black hole and gradually grew through a supermassive black hole to the present universe by accreting ambient material and merging with other black holes. The entire space is infinitely and hierarchically layered and evolves iteratively. The innermost three layers are the universe that we lives, the outside space called mother universe, and the inside star-like and supermassive black holes called child universes. The outermost layer has an infinite radius and zero limits for both the mass density and absolute temperature. All layers or universes are governed by the same physics, the Einstein general relativity with the Robertson-Walker metric of spacetime, and tend to expand outward physically. When one universe expands out, a new similar universe grows up from its inside black holes. The origin, structure, evolution, expansion, and cosmic microwave background radiation of black hole universe have been presented in the recent sequence of American Astronomical Society (AAS) meetings and published in peer-review journals. This study will show how this new model explains the acceleration of the universe and why dark energy is not required. We will also compare the black hole universe model with the big bang cosmology.

  18. Cases on Digital Game-Based Learning: Methods, Models, and Strategies

    Science.gov (United States)

    Baek, Youngkyun; Whitton, Nicola

    2013-01-01

    In K-12 classrooms, as well as on the college and university level, the incorporation of digital games has played a vital role in the educational system. While introducing teachers to new fields, these digital games have been designed and implemented for the classroom and have shown positive results at a variety of educational levels. Cases on…

  19. The spectrum of density perturbations in an expanding universe

    Science.gov (United States)

    Silk, J.

    1974-01-01

    The basic dynamic equations that govern the evolution of perturbations in a Friedmann-Lemaitre universe are derived. General solutions describing the evolution of adiabatic perturbations in the density of matter are obtained, and the choice of the appropriate initial conditions is examined. The various perturbation modes are compared, and the effects of decoupling on the perturbation spectrum are studied. The scheme used to follow the evolution of density perturbations through decoupling is based on an extension of the Eddington approximation to the radiative transfer equation, and is strictly valid in both optically thick and thin limits.

  20. International Entry Modes for Digital Product Providers

    DEFF Research Database (Denmark)

    Rask, Morten

    Often internationalization of the firm refers to the process of increasing involvement in international operations. In relation to e-business many authors have argued that e-business will change the internationalization processes. E-business is about digitalization of processes, products and actors...... (Fredsted, 2003). The case study gives insight into one of the few international marketplaces. Scanmarket has expanded to the English, German, American and Swedish markets. Essentially the case raises the question: "To what extent does the Internet supersede firms' need for local, physical presence?"...

  1. Stop Calling It "Digital Humanities"

    Science.gov (United States)

    Pannapacker, William

    2013-01-01

    A persistent criticism of the digital-humanities movement is that it is elitist and exclusive because it requires the resources of a major university (faculty, infrastructure, money), and is thus more suited to campuses with a research focus. Academics and administrators at small liberal-arts colleges may read about DH and, however exciting it…

  2. Expanding subjectivities

    DEFF Research Database (Denmark)

    Lundgaard Andersen, Linda; Soldz, Stephen

    2012-01-01

    A major theme in recent psychoanalytic thinking concerns the use of therapist subjectivity, especially “countertransference,” in understanding patients. This thinking converges with and expands developments in qualitative research regarding the use of researcher subjectivity as a tool......-Saxon and continental traditions, this special issue provides examples of the use of researcher subjectivity, informed by psychoanalytic thinking, in expanding research understanding....

  3. GuidosToolbox: universal digital image object analysis

    Science.gov (United States)

    Peter Vogt; Kurt Riitters

    2017-01-01

    The increased availability of mapped environmental data calls for better tools to analyze the spatial characteristics and information contained in those maps. Publicly available, userfriendly and universal tools are needed to foster the interdisciplinary development and application of methodologies for the extraction of image object information properties contained in...

  4. Expanding the universe of universal coverage: the population health argument for increasing coverage for immigrants.

    Science.gov (United States)

    Nandi, Arijit; Loue, Sana; Galea, Sandro

    2009-12-01

    As the US recession deepens, furthering the debate about healthcare reform is now even more important than ever. Few plans aimed at facilitating universal coverage make any mention of increasing access for uninsured non-citizens living in the US, many of whom are legally restricted from certain types of coverage. We conducted a critical review of the public health literature concerning the health status and access to health services among immigrant populations in the US. Using examples from infectious and chronic disease epidemiology, we argue that access to health services is at the intersection of the health of uninsured immigrants and the general population and that extending access to healthcare to all residents of the US, including undocumented immigrants, is beneficial from a population health perspective. Furthermore, from a health economics perspective, increasing access to care for immigrant populations may actually reduce net costs by increasing primary prevention and reducing the emphasis on emergency care for preventable conditions. It is unlikely that proposals for universal coverage will accomplish their objectives of improving population health and reducing social disparities in health if they do not address the substantial proportion of uninsured non-citizens living in the US.

  5. Utilising digital technology for dialogue and evaluation

    DEFF Research Database (Denmark)

    Kjærgaard, Thomas

    2016-01-01

    This article investigates how digital technology can enhance evaluation and eflection through dialogue in a theory lesson in the context of university college teaching. The pedagogical designs in the article vary from synchronous classroom evaluation on smartphones, to online discussion fora...

  6. Digital assessments – challenges, choices and pitfalls

    DEFF Research Database (Denmark)

    Simonsen, Eivind Ortind

    assessments at the faculty of Health, Aarhus University. Today (2015) we have digitalized approximately 70 % of our assessments, including MCQ (multiple choice) and OSCE (objective structured clinical examination), with 7-800 students assessed each semester. We have developed our own systems...

  7. Utilising digital technology for dialogue and evaluation

    DEFF Research Database (Denmark)

    Kjærgaard, Thomas

    2016-01-01

    This article investigates how digital technology can enhance evaluation and reflection through dialogue in a theory lesson in the context of university college teaching. The pedagogical designs in the article vary from synchronous classroom evaluation on smartphones, to online discussion fora...

  8. Older Adults’ Coping with the Digital Everyday Life

    Directory of Open Access Journals (Sweden)

    Wenche M. Rønning

    2017-10-01

    Full Text Available This study was motivated by a concern for how older adults adjust to their digital everyday life. Theories of motivation and self-efficacy are applied in order to understand how older adults master and adjust to the rapid development into a paper-free, online world. A sample of eighteen older adults (62-90 years were interviewed about the reasons and motivations underlying their ICT usage, and how this affects their perception of mastering their everyday life. A semi-structured interview guide was developed for this purpose. The data were analyzed using an inductive coding procedure involving descriptive and interpretive phases based on the theoretical assumptions about motivation and mastery. Three overarching categories were evident in the data material; Challenges, Connectedness and Expanding. The first category describes new challenges mastering everyday life activities, and how this brings about feelings of pressure, barriers, and fear. The other two categories give a more positive picture of how older adults perceive the new developments. Internet and social media is perceived as positive because it enables them to stay connected to family, old and new friends. It also enables them to cultivate and expand leisure and hobby activities in new ways. Based on the findings we underscore the necessity of devising strategies that will prevent older people from being marginalized in relation to the digital everyday life.

  9. Cosmic strings in an expanding spacetime

    International Nuclear Information System (INIS)

    Stein-Schabes, J.A.; Burd, A.B.

    1987-04-01

    We investigate the stability of a static, infinitely long and straight vacuum string solution under inhomogeneous axisymmetric time-dependent perturbations. We find it to be perturbatively stable. We further extend our work by finding a string solutions in an expanding Universe. The back reaction of the string on the gravitational field has been ignored. The background is assumed to be a Friedman-Robertson-Walker (FRW) cosmology. By numerically integrating the field equations in a radiation and matter dominated models, we discover oscillatory solutions. The possible damping of these oscillations is discussed. For late times the solution becomes identical to the static one studied in the first part of the paper. 19 refs., 8 figs

  10. Instructional Podcasting with Undergraduate Digital Natives

    Science.gov (United States)

    Thomas, Kevin M.; Willis, Dottie

    2013-01-01

    This paper analyzes the use of instructional podcasts with students in introductory computer application classes at a small, independent, private university. Participants were all undergraduates in the school of education. In an effort to model effective use of instructional technology for preservice teachers and to "meet digital native…

  11. Digital library and the Slovenian academic environment

    Directory of Open Access Journals (Sweden)

    Martina Kerec

    2001-01-01

    Full Text Available Digital library is a term for a library of the present and of the future challenging the traditional libraries. Authors are interested mostly in the digital space of Slovene academic instutions. In the research, the digital collections of most of the University of Ljubljana faculties are examined. A questionnaire was used to obtain information about the users' (students' needs and their acquaintance with the concept of the digital library. Two things were expected: the research was aimed at finding the positive effect of digital libraries on studies, and the questionnaire as an incentive in the library profession for further research. The questionnaire was made in the end of 1999 at the Faculty of Arts in Ljubljana (FF. It included 275 students of FF. The results showed that the students of librarianship had a better understanding of the term digital library than the students of other courses. A personal computer is used frequently and with pleasure by most questioned students. The term digital library is known to 71,1% of the students of librarianship, and only to 43,8% of others. Most of the students chose the correct definition of the digital library (the digital library is a collection of disparate systems and resources, accessible on the net, but that was, by the authors' opinion, mostly a lucky guess. According to the findings of the research, the authors believe that future development will improve and accelerate a wider use of digital libraries, in Slovenia as well.

  12. Editors and Journal Startup in the Digital Era

    Directory of Open Access Journals (Sweden)

    Andrew Kirby

    2015-10-01

    Full Text Available More has changed in journal publishing in the past twenty years than the previous four centuries. Digital technologies have transformed the submission, review, production and distribution of scholarly materials, with the result that there has been exponential growth in the number of papers published in an expanding roster of journals—some are mainstream, some highly specialized, some are produced by publishers who have existed since printing began and others are produced by small groups with niche interests. [...

  13. Bridging Natural and Digital Domains: Attitudes, Confidence, and Interest in Using Technology to Learn Outdoors

    Science.gov (United States)

    Hougham, R. Justin; Nutter, Marc; Graham, Caitlin

    2018-01-01

    Background: The current study, Project EARPOD (Engaging At-Risk Populations Outdoors, Digitally), addressed two questions: First, does the use of technology in environmental education detract from students' experiences outdoors? Second, can these technological interventions be expanded to provide access to students and schools across the…

  14. Redesigning Civic Education for the Digital Age: Participatory Politics and the Pursuit of Democratic Engagement

    Science.gov (United States)

    Kahne, Joseph; Hodgin, Erica; Eidman-Aadahl, Elyse

    2016-01-01

    The digital revolution has enabled important changes in political life. Opportunities to engage in "participatory politics" have expanded significantly. Participatory politics differ from institutional politics in that they are peer-based, interactive, and not guided by deference to traditional elites and institutions. These changes…

  15. General Impact Of A Single Market - Albania Goes Digital

    Directory of Open Access Journals (Sweden)

    Nikollaq Pano

    2015-08-01

    Full Text Available Although Brexit did trigger some discussion about the European Single Market future The Commission strategy for an area without internal frontiers in which the free movement of goods persons services and capital is ensured remains the same and increasingly attracts the attention and interest of policy makers and researchers. The digital single market a recent concept developed in the context of the European Union goes beyond the Cloud computing IoT and Big Data that are present-day words frequently mentioned in country strategies. The aim of coming together into a single market is to maximise the benefits of technology while simultaneously preserving values we hold timeless. Expanding this concept and considering the configuration of a digital market in Albania is the underpinning of this paper. Goods and services provided on-line will grant a better access and improved service to the benefit of customers under conditions of fair competition and a high level of consumer and personal data protection. A single platform necessarily digital can incorporate the banking industrial education investment markets and contribute to their unification. This first step of placing the idea should be followed by considering components like digital infrastructure development digitally educated people collaborative economy and others. There is a vision for the country development with no timeline yet above and beyond the brainstorming approach.

  16. Digital Collections, Digital Libraries & the Digitization of Cultural Heritage Information.

    Science.gov (United States)

    Lynch, Clifford

    2002-01-01

    Discusses digital collections and digital libraries. Topics include broadband availability; digital rights protection; content, both non-profit and commercial; digitization of cultural content; sustainability; metadata harvesting protocol; infrastructure; authorship; linking multiple resources; data mining; digitization of reference works;…

  17. H. Sapiens Digital: From Digital Immigrants and Digital Natives to Digital Wisdom

    Science.gov (United States)

    Prensky, Marc

    2009-01-01

    As we move further into the 21st century, the digital native/digital immigrant paradigm created by Marc Prensky in 2001 is becoming less relevant. In this article, Prensky suggests that we should focus instead on the development of what he calls "digital wisdom." Arguing that digital technology can make us not just smarter but truly wiser, Prensky…

  18. Telementoring Physics: University-Community After-school Collaborations and the Mediation of the Formal/Informal Divide

    Science.gov (United States)

    Lecusay, Robert A.

    For several decades improvement of science education has been a major concern of policy makers concerned that the U.S. is a "nation at risk" owing to the dearth of students pursing careers in science. Recent policy proposals have argued that provision of broadband digital connectivity to organizations in the informal sector would increase the reach of the formal, academic sector to raise the overall level of science literacy in the country. This dissertation reports on a longitudinal study of a physics telementoring activity jointly run by a university-community collaborative at a community learning center. The activity implemented a digital infrastructure that exceeds the technical and social-institutional arrangements promoted by policy makers. In addition to broadband internet access (for tele-conferencing between students at the community center and physicists at a university), supplemented by digital software designed to promote physics education, the activity included the presence of a collaborating researcher/tutor at the community learning center to coordinate and document the instructional activities. The current research revealed a fundamental contradiction between the logic, goals, and practices of the physics instructors, and the corresponding logic, goals, and practices of the participants at the community learning center. This contradiction revolves around a contrast between the physicists' formal, logocentric ways of understanding expressed in the ability to explain the scientific rules underlying physical phenomena and the informal, pragmatic orientation of the youth and adults at the learning center. The observations in this dissertation should remind techno-enthusiasts, especially in the arena of public education policy, that there are no turnkey solutions in "distance" science education. Technically "connecting" people is not equivalent to creating conditions that expand opportunities to learn and a functioning socio-technical system that

  19. The Expanding Universe of Astronomy on Tap

    Science.gov (United States)

    Livermore, Rachael C.; Morris, Brett; Narayan, Gautham; Morrison, Sarah J.; Schneider, Evan; Bozek, Brandon; Rice, Emily L.; Hummels, Cameron B.; Garofali, Kristen; Martinez, Raquel; Li, Yuan; Green, Joel D.; LaMassa, Stephanie M.; Silvia, Devin W.; Schwamb, Megan E.; Arcavi, Iair; Silverman, Jeffrey M.

    2017-01-01

    Astronomy on Tap (AoT) is a constellation of free public outreach presentations held in bars. AoT events aim to engage audiences who might not choose to attend public lectures in a university setting by creating an informal atmosphere and combining scientific talks with music, games, and prizes. The events have a flexible format, typically consisting of between one and three astronomy-related presentations, sometimes with additional games and trivia, and some locations also produce merchandise. The flexible structure means that the format can be adapted to the resources available in the location and the time commitment the local organizers are willing to make. Some events are broadcast online through live streaming, with some others being posted to YouTube. In conjunction with an active social media presence, this ensures engagement beyond those able to attend events in person. Astronomy on Tap events have now been held in 20 cities around the world and are typically organised by postdocs and graduate students, with some involvement from faculty and outreach or education staff. Holding these events under the global AoT constellation facilitates knowledge transfer, sharing of resources, and networking opportunities for scientists interested in outreach/communication. The events have been highly successful, with some locations regularly attracting more than 200 people per month. In this poster we describe the goals and characteristics of AoT events, the different adaptations by various locations, the resources we have developed, and provide information for those interested in starting a new event in their location.

  20. Simple cortical and thalamic neuron models for digital arithmetic circuit implementation

    Directory of Open Access Journals (Sweden)

    Takuya eNanami

    2016-05-01

    Full Text Available Trade-off between reproducibility of neuronal activities and computational efficiency is one ofcrucial subjects in computational neuroscience and neuromorphic engineering. A wide variety ofneuronal models have been studied from different viewpoints. The digital spiking silicon neuron(DSSN model is a qualitative model that focuses on efficient implementation by digital arithmeticcircuits. We expanded the DSSN model and found appropriate parameter sets with which itreproduces the dynamical behaviors of the ionic-conductance models of four classes of corticaland thalamic neurons. We first developed a 4-variable model by reducing the number of variablesin the ionic-conductance models and elucidated its mathematical structures using bifurcationanalysis. Then, expanded DSSN models were constructed that reproduce these mathematicalstructures and capture the characteristic behavior of each neuron class. We confirmed thatstatistics of the neuronal spike sequences are similar in the DSSN and the ionic-conductancemodels. Computational cost of the DSSN model is larger than that of the recent sophisticatedIntegrate-and-Fire-based models, but smaller than the ionic-conductance models. This modelis intended to provide another meeting point for above trade-off that satisfies the demand forlarge-scale neuronal network simulation with closer-to-biology models.

  1. ‘Share your experience’. Digital storytelling in English for tourism

    Directory of Open Access Journals (Sweden)

    María Alcantud-Díaz

    2014-03-01

    Full Text Available The main purpose of this article is to describe the experience achieved when implementing practical classes of English for Tourism so as to bridge the gap between the professional world of the tourism industry and what students learn at university. In this article we will first introduce the concept of “digital storytelling” (Lambert, 2006; Gregori-Signes, 2008a, 2008b & 2010; Alcantud-Díaz, 2008 & 2011 and briefly describe some of the projects that have already been developed at the University of Valencia as well as the use of digital stories in the promotion of touristy products. We will then argue that digital storytelling can be considered a productive type of activity which fits the demand of the Common European Framework of Reference for Languages (CEFR with regard to implementing the use of Information and Communication Technologies (ICTs within the curriculum. Additionally, it helps to improve traditional skills development, mainly speaking and writing along with researching, collaborative tasks and working with computers. Thirdly, we will depict and discuss authentic examples of digital stories produced by undergraduate students registered in the course “Communication in English Language in Tourism I”.

  2. Digital Collections, Digital Libraries and the Digitization of Cultural Heritage Information.

    Science.gov (United States)

    Lynch, Clifford

    2002-01-01

    Discusses the development of digital collections and digital libraries. Topics include digitization of cultural heritage information; broadband issues; lack of compelling content; training issues; types of materials being digitized; sustainability; digital preservation; infrastructure; digital images; data mining; and future possibilities for…

  3. The Universe of Fluctuations The Architecture of Spacetime and the Universe

    CERN Document Server

    Sidharth, B G

    2005-01-01

    The Universe of Fluctuations: The Architecture of Spacetime and the Universe is a path-breaking work which proposes solutions to the impasse and crisis facing fundamental physics and cosmology. It describes a cosmological model based on fuzzy spacetime that has correctly predicted a dark-energy-driven acceleration of our expanding universe - with a small cosmological constant - at a time when the popular belief was quite the contrary. It describes how the Universe is made up of an underpinning of Planck oscillators in a Quantum Vacuum. This leads to, amongst other things, a characterization of gravitation as being distributional over the entire Universe, thereby providing an answer to a puzzle brought to light by Weinberg years ago and since overlooked. There is also a simple formula for the mass spectrum of all known elementary particles, based on QCD dynamics. Many other interesting ramifications and experimental tests for the future are also discussed. This apart, there is a brief survey of some of the exi...

  4. Between universalism and regionalism: universal systematics from imperial Japan.

    Science.gov (United States)

    Lee, Jung

    2015-12-01

    Historiographic discussions of the universality and regionality of science have to date focused on European cases for making regional science universal. This paper presents a new perspective by moving beyond European origins and illuminating a non-European scientist's engagement with the universality and regionality of science. It will examine the case of the Japanese botanist Nakai Takenoshin (1882-1952), an internationally recognized authority on Korean flora based at Tokyo Imperial University. Serving on the International Committee on Botanical Nomenclature in 1926, Nakai endorsed and acted upon European claims of universal science, whilst simultaneously unsettling them with his regionally shaped systematics. Eventually he came to promote his own systematics, built regionally on Korean flora, as the new universal. By analysing his shifting claims in relation to those of other European and non-European botanists, this paper makes two arguments. First, universalism and regionalism were not contradictory foundations of scientific practice but useful tools used by this non-European botanist in maintaining his scientific authority as a representative Japanese systematist. Second, his claims to universality and regionalism were both imperially charged. An imperially monopolized study of Korean plants left a regional imprint on Nakai's systematics. In order to maintain his scientific authority beyond its region of origin he had to assert either the expanding regionalism of 'East Asia' or universalism.

  5. The Effect of Digital Publishing on Technical Services in University Libraries

    Science.gov (United States)

    Hunter, Ben

    2013-01-01

    The past decade has brought enormous changes in scholarly communication, leading many libraries to undertake large-scale digital publishing initiatives. However, no study has investigated how technical services departments are changing to support these new services. Using change management as a theoretical framework, the investigator uses content…

  6. Innovation in Communication into a Digital World

    OpenAIRE

    Viorica Jelev

    2016-01-01

    The article investigate the role of communication in the digital age, between consumers and business and seeks to render highlighting changes within the Romanian society in the last 26 years, with the effects occurred in people's behavior, but also the changes of university education at the discipline I teach, Merchandising and International Marketing, with impact on the delivery of new information to the students of the Faculty of Economic Sciences, within Spiru Haret University. Finally, I ...

  7. Digital positron lifetime spectroscopy: present status and outlook

    International Nuclear Information System (INIS)

    Becvar, F.

    2007-01-01

    This contribution summarizes achievements in instrumentation for positron lifetime measurements with emphasis on digital spectrometric systems. A significant part of the data presented are based on a long-term exploitation of a conventional positron lifetime spectrometer developed at Charles University in early 90s, on bench-mark testing measurements with this spectrometer working temporarily in conjunction with a pair of 8-bit, 4 GS/s digitizers and on analogous measurements with a recently assembled digital positron lifetime spectrometer. In addition, results from testing experiments with microchannel plate photomultipliers are briefly reported. Further development of positron lifetime technique is discussed. (copyright 2007 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

  8. Canadian digitization: radical beginning and pragmatic follow-on

    Science.gov (United States)

    Grant, Terrill K.

    2000-08-01

    The Canadian Army, like most Western armies, spent a lot of time soul-searching about the application of technology to its Command and Control processes during the height of the Cold War in the 70's and 80's. In the late 1980's, these efforts were formalized in a program called the Tactical Command, Control and Communications System (TCCCS). As envisioned, the project would replace in one revolutionary Big Bang all of the tactical communications employed in the Canadian field forces. It would also add significant capabilities such as a long range satellite communications system, a universal tactical e-mail system, and a command and control system for the commander and his staff from division to unit HQ. In 1989, the project was scaled back due to budgetary constraints by removing the divisional trunk communications system and the command and control system. At this point a contract was let to Computing Devices Canada for the core communications functionality. During the next 6 years, the Canadian Army expanded on this digitization effort by amending the contract to add in a trunk system and a situational awareness system. As well, in 1996, Computing Devices received a contract to develop and integrate a C2 system with the communications system thereby restoring the final two Cs of TCCCS. This paper discusses the architecture and implementation of the TCCCS as the revolutionary enabler of the Canadian Army's digitization effort for the early 2000 era. The choice of a hybrid approach of using commercial standards supplemented by appropriate NATO communications standards allowed for an easy addition of the trunk system. As well, conformance to the emerging NATO Communications architecture for Land Tactical Communications in the Post 2000 era will enhance interoperability with Canada's allies. The paper also discusses the pragmatic approach taken by the Canadian Army in inserting C2 functionally into TCCCS, and presents the ultimate architecture and functionality. This

  9. An Emergent Micro-Services Approach to Digital Curation Infrastructure

    OpenAIRE

    Abrams, Stephen; Kunze, John; Loy, David

    2010-01-01

    In order better to meet the needs of its diverse University of California (UC) constituencies, the California Digital Library UC Curation Center is re-envisioning its approach to digital curation infrastructure by devolving function into a set of granular, independent, but interoperable micro-services. Since each of these services is small and self-contained, they are more easily developed, deployed, maintained, and enhanced; at the same time, complex curation function can emerge from the str...

  10. EDUCATING THE PEOPLE AS A DIGITAL PHOTOGRAPHER AND CAMERA OPERATOR VIA OPEN EDUCATION SYSTEM STUDIES FROM TURKEY: Anadolu University Open Education Faculty Case

    Directory of Open Access Journals (Sweden)

    Huseyin ERYILMAZ

    2010-04-01

    Full Text Available Today, Photography and visual arts are very important in our modern life. Especially for the mass communication, the visual images and visual arts have very big importance. In modern societies, people must have knowledge about the visual things, such as photographs, cartoons, drawings, typography, etc. Briefly, the people need education on visual literacy.In today’s world, most of the people in the world have a digital camera for photography or video image. But it is not possible to give people, visual literacy education in classic school system. But the camera users need a teaching medium for using their cameras effectively. So they are trying to use internet opportunities, some internet websites and pages as an information source. But as the well known problem, not all the websites give the correct learning or know-how on internet. There are a lot of mistakes and false information. Because of the reasons given above, Anadolu University Open Education Faculty is starting a new education system to educate people as a digital photographer and camera person in 2009. This program has very importance as a case study. The language of photography and digital technology is in English. Of course, not all the camera users understand English language. So, owing to this program, most of the camera users and especially people who is working as an operator in studios will learn a lot of things on photography, digital technology and camera systems. On the other hand, these people will learn about composition, visual image's history etc. Because of these reasons, this program is very important especially for developing countries. This paper will try to discuss this subject.

  11. Expanding Thurston maps

    CERN Document Server

    Bonk, Mario

    2017-01-01

    This monograph is devoted to the study of the dynamics of expanding Thurston maps under iteration. A Thurston map is a branched covering map on a two-dimensional topological sphere such that each critical point of the map has a finite orbit under iteration. It is called expanding if, roughly speaking, preimages of a fine open cover of the underlying sphere under iterates of the map become finer and finer as the order of the iterate increases. Every expanding Thurston map gives rise to a fractal space, called its visual sphere. Many dynamical properties of the map are encoded in the geometry of this visual sphere. For example, an expanding Thurston map is topologically conjugate to a rational map if and only if its visual sphere is quasisymmetrically equivalent to the Riemann sphere. This relation between dynamics and fractal geometry is the main focus for the investigations in this work.

  12. Uji Ketergunaan Layanan Antarmuka Magister Management Digital Library (MM-Digilib Perpustakaan Magister Manajemen Fakultas Ekonomi Universitas Indonesia

    Directory of Open Access Journals (Sweden)

    Sri Sugianti

    2016-01-01

    Full Text Available A digital library is an advancement of a conventional library. Wider role of a digital library lies in its ability to give support for service via virtual/electronic/digital network. Through its revolutionary presence, a digital library needs a testfor development. One of the tests that can be used is usqge test of interface service of magister management Digital Library (MM-Digilib at Magister Management of Faculty of Economics, University of Indonesia. Based on theformula of Slovin and Nomogram Henry King, there are 8I valid samples out of 651 of master students accessing digital theses at Magister Management Library, Faculty of Economics, University of Indonesia. Out of indicators of usage test - efficiency, effictiveness, ease ofuse and ease ofinteraction of MM-Digilib is in general relatively good. Yet it needs to improve thefunction of Advanced Search in order to assist and shorten time in searching.

  13. Computer Aided Teaching of Digital Signal Processing.

    Science.gov (United States)

    Castro, Ian P.

    1990-01-01

    Describes a microcomputer-based software package developed at the University of Surrey for teaching digital signal processing to undergraduate science and engineering students. Menu-driven software capabilities are explained, including demonstration of qualitative concepts and experimentation with quantitative data, and examples are given of…

  14. PHARUS : PHased ARray Universal SAR

    NARCIS (Netherlands)

    Paquay, M.H.A.; Vermeulen, B.C.B.; Koomen, P.J.; Hoogeboom, P.; Snoeij, P.; Pouwels, H.

    1996-01-01

    In the Netherlands, a polarimetric C-band aircraft SAR (Synthetic Aperture Radar) has been developed. The project is called PHARUS, an acronm for PHased ARray Universal SAR. This instrument serves remote sensing applications. The antenna system contains 48 active modules (expandable to 96). A module

  15. Intentional Vocabulary Learning Using Digital Flashcards

    Science.gov (United States)

    Hung, Hsiu-Ting

    2015-01-01

    As an attempt to follow through on the claims made by proponents of intentional vocabulary learning, the present study set out to examine whether and how digital flashcards can be incorporated into a university course to promote the vocabulary learning of English language learners. The overall research findings underscore the value of learning…

  16. "On Course" for Supporting Expanded Participation and Improving Scientific Reasoning in Undergraduate Thesis Writing

    Science.gov (United States)

    Dowd, Jason E.; Roy, Christopher P.; Thompson, Robert J., Jr.; Reynolds, Julie A.

    2015-01-01

    The Department of Chemistry at Duke University has endeavored to expand participation in undergraduate honors thesis research while maintaining the quality of the learning experience. Accomplishing this goal has been constrained by limited departmental resources (including faculty time) and increased diversity in students' preparation to engage in…

  17. Light speed and the expansion of the universe

    Energy Technology Data Exchange (ETDEWEB)

    Nagao, Shigeto, E-mail: snagao@lilac.plala.or.jp [Business Development and Licensing, Nippon Boehringer Ingelheim Co., Ltd (Japan)

    2011-07-08

    Based on the formerly proposed model of the time and universe, a time-course of the light speed along with the expansion of the universe is discussed. Formulas of light propagated distance of a supernova are derived, whose graphs showed an excellent consistency to the observed supernovae data. This outcome verifies that the universe has been expanding at a constant speed by our observed time as the model predicts.

  18. University Knowledge Production and Innovation: Getting a Grip

    Science.gov (United States)

    van Rooij, Arjan

    2014-01-01

    Today universities are increasingly seen as motors of innovation: they not only need to provide trained manpower and publications to society, but also new products, new processes and new services that create firms, jobs, and economic growth. This function of universities is controversial, and a huge and still expanding literature has tried to…

  19. Correlation function for density perturbations in an expanding universe. I. Linear theory

    International Nuclear Information System (INIS)

    McClelland, J.; Silk, J.

    1977-01-01

    We derive analytic solutions for the evolution of linearized adiabatic spherically symmetric density perturbations and the two-point correlation function in two regimes of the early universe: the radiation-dominated regime prior to decoupling, and the matter-dominated regime after decoupling. The solutions are for an Einstein--de Sitter universe, and include pressure effects. In the radiation era, we find that individual spherically symmetric adiabatic density perturbations smaller than the Jeans length flow outward like water waves instead of oscillating as infinite plane waves. It seems likely that the only primordial structures on scales smaller than the maximum Jeans length which could survive are very regular waves such as infinite plane waves. However, structure does build up in the correlation function over distances comparable with the maximum Jeans length in the radiation regime, and could lead to the eventual formation of galaxy superclusters. This scale (approx.10 17 Ω -2 M/sub sun)/therefore provides a natural dimension for large-scale structure arising out of the early universe. A general technique is described for constructing solutions for the evolution of the two-point correlation function, and applied to study white noise and power-law initial conditions for primordial inhomogeneities

  20. Reflexões sobre o patrimônio digital a partir da experiência do projeto Arquigrafia │ Digital heritage: reflections on the Arquigrafia project

    Directory of Open Access Journals (Sweden)

    Artur Simões Rozestraten

    2015-05-01

    ABSTRACT This paper  proposes a critical reflection on documental and technological challenges regarding conservation, digitization, cataloguing and web dissemination of images in the experience of the Arquigrafia multidisciplinary project (www.arquigrafia.org.br. Arquigrafia is a collaborative web image sharing environment open to photographic institutional archives and users' private collections. The need to organize and share this information set, as well as the specificities of descriptive and thematic representation for effective retrieval of this digital heritage are also presented. Besides the issues issues related to the financing of digitization projects of collections and the preservation of documents and digital files, this article discuss the need to establish a public policy that incorporates the latest standards and the most appropriate methodology for the treatment, organization and retrieval information concerning the digital heritage that has been produced by Brazilian public institutions such as university libraries, archives and museums. Keywords: Image; Digital Heritage; Collaborative Environment; Web.

  1. Chronopolis Digital Preservation Network

    Directory of Open Access Journals (Sweden)

    David Minor

    2010-07-01

    Full Text Available The Chronopolis Digital Preservation Initiative, one of the Library of Congress’ latest efforts to collect and preserve at-risk digital information, has completed its first year of service as a multi-member partnership to meet the archival needs of a wide range of domains.Chronopolis is a digital preservation data grid framework developed by the San Diego Supercomputer Center (SDSC at UC San Diego, the UC San Diego Libraries (UCSDL, and their partners at the National Center for Atmospheric Research (NCAR in Colorado and the University of Maryland's Institute for Advanced Computer Studies (UMIACS.Chronopolis addresses a critical problem by providing a comprehensive model for the cyberinfrastructure of collection management, in which preserved intellectual capital is easily accessible, and research results, education material, and new knowledge can be incorporated smoothly over the long term. Integrating digital library, data grid, and persistent archive technologies, Chronopolis has created trusted environments that span academic institutions and research projects, with the goal of long-term digital preservation.A key goal of the Chronopolis project is to provide cross-domain collection sharing for long-term preservation. Using existing high-speed educational and research networks and mass-scale storage infrastructure investments, the partnership is leveraging the data storage capabilities at SDSC, NCAR, and UMIACS to provide a preservation data grid that emphasizes heterogeneous and highly redundant data storage systems.In this paper we will explore the major themes within Chronopolis, including:a The philosophy and theory behind a nationally federated data grid for preservation. b The core tools and technologies used in Chronopolis. c The metadata schema that is being developed within Chronopolis for all of the data elements. d Lessons learned from the first year of the project.e Next steps in digital preservation using Chronopolis: how we

  2. Long-term implications of observing an expanding cosmological civilization

    Science.gov (United States)

    Olson, S. Jay

    2018-01-01

    Suppose that advanced civilizations, separated by a cosmological distance and time, wish to maximize their access to cosmic resources by rapidly expanding into the universe. How does the presence of one limit the expansionistic ambitions of another, and what sort of boundary forms between their expanding domains? We describe a general scenario for any expansion speed, separation distance and time. We then specialize to a question of particular interest: What are the future prospects for a young and ambitious civilization if they can observe the presence of another at a cosmological distance? We treat cases involving the observation of one or two expanding domains. In the single-observation case, we find that almost any plausible detection will limit one's future cosmic expansion to some extent. Also, practical technological limits to expansion speed (well below the speed of light) play an interesting role. If a domain is visible at the time one embarks on cosmic expansion, higher practical limits to expansion speed are beneficial only up to a certain point. Beyond this point, a higher speed limit means that gains in the ability to expand are more than offset by the first-mover advantage of the observed domain. In the case of two visible domains, it is possible to be `trapped' by them if the practical speed limit is high enough and their angular separation in the sky is large enough, i.e. one's expansion in any direction will terminate at a boundary with the two visible civilizations. Detection at an extreme cosmological distance has surprisingly little mitigating effect on our conclusions.

  3. Canadian community pharmacists' use of digital health technologies in practice.

    Science.gov (United States)

    Leung, Valerie; Tharmalingam, Sukirtha; Cooper, Janet; Charlebois, Maureen

    2016-01-01

    In 2010, a pan-Canadian study on the current state and benefits of provincial drug information systems (DIS) found that substantial benefits were being realized and that pharmacists perceived DIS to be a valuable tool in the evolving models of pharmacy practice. To understand changes in digital health and the impact on practice since that time, a survey of community pharmacists in Canada was conducted. In 2014, Canada Health Infoway (Infoway) and the Canadian Pharmacists Association (CPhA) invited community pharmacists to participate in a Web-based survey to understand their use and perceived benefits of digital health in practice. The survey was open from April 15 to May 12, 2014. Of the 447 survey responses, almost all used some form of digital health in practice. Those with access to DIS and provincial laboratory information systems (LIS) reported increased productivity and better quality of care. Those without access to these systems would overwhelmingly like access. There have been significant advances in digital health and community pharmacy practice over the past several years. In addition to digital health benefits in the areas of productivity and quality of care, pharmacists are also experiencing substantial benefits in areas related to recently expanded scope of practice activities such as ordering lab tests. Community pharmacists frequently use digital health in practice and recognize the benefits of these technologies. Digital health is, and will continue to be, a key enabler for practice transformation and improved quality of care. Can Pharm J (Ott) 2016;149:xx-xx.

  4. Digital Humanities and networked digital media

    DEFF Research Database (Denmark)

    Finnemann, Niels Ole

    2014-01-01

    This article discusses digital humanities and the growing diversity of digital media, digital materials and digital methods. The first section describes the humanities computing tradition formed around the interpretation of computation as a rule-based process connected to a concept of digital...... materials centred on the digitisation of non-digital, finite works, corpora and oeuvres. The second section discusses “the big tent” of contemporary digital humanities. It is argued that there can be no unifying interpretation of digital humanities above the level of studying digital materials with the help...... of software-supported methods. This is so, in part, because of the complexity of the world and, in part, because digital media remain open to the projection of new epistemologies onto the functional architecture of these media. The third section discusses the heterogeneous character of digital materials...

  5. Application of a digital data acquisition system for time of flight Positron annihilation-induced Auger Electron Spectroscopy

    Science.gov (United States)

    Gladen, R. W.; Chirayath, V. A.; McDonald, A. D.; Fairchild, A. J.; Chrysler, M. D.; Imam, S. K.; Koymen, A. R.; Weiss, A. H.

    We describe herein a digital data acquisition system for a time-of-flight Positron annihilation-induced Auger Electron Spectrometer. This data acquisition system consists of a high-speed digitizer collecting signals induced by Auger electrons and annihilation gammas in a multi-channel plate electron detector and a BaF2 gamma detector, respectively. The time intervals between these two signals is used to determine the times of flight of the Auger electrons, which are analyzed by algorithms based on traditional nuclear electronics methods. Ultimately, this digital data acquisition system will be expanded to incorporate the first coincidence measurements of Auger electron and annihilation gamma energies.

  6. Digitalization influence on shopping centers strategic management

    Directory of Open Access Journals (Sweden)

    Ioniţă Irene Mihaela

    2017-07-01

    Full Text Available Shopping centers are an important aspect of the extremely dynamic life of the 21st century consumer. Nowadays, worldwide, shopping centers represent significant multimillion euro investments, remarking themselves with bold architectures and structures and an individual brand image. Retail markets are currently under transformation by a confluence of new retailing technologies, dramatic shifts in the demographic profile and preferences of more affluent and educated shoppers. Part of the market share in modern retail moved to new forms of selling, which weakened the offer of some traditional retailers, while also creating opportunities for retailers to move and integrate their offerings with new digital tools (via electronic commerce, social commerce and mobile commerce. Meeting customer needs and increasing sales are the primary drivers behind retailers use of information systems and technology (IS/IT. New developments in IS/IT offer new opportunities and challenges for organizations and society. The current paper proposes to analyze the way digital media and information technology (computers and mobile devices influences the virtual and physical shopping experiences, and shopping centers management consequently. The need for communication & sales channels integration, the impact of new information technologies (IT’s, the growing role of social / digital media, the balance between personalization and privacy – all represent challenges retail industry needs to currently adapt to face digitalization. E-commerce is transforming both consumer behavior and retailing business models, by greatly expanding shopping convenience, selection and affordability.

  7. Digital marketing in retail : what are the benefits a Swiss premium department store could reap when adapting to the changing environment of digitization? A maturity model

    OpenAIRE

    Schöni, Pascal

    2017-01-01

    The force of digitization has empowered customers with an omni-present access to a worldwide bazar of products and information. This shift has compelled traditional retailers to expand their channels and touchpoints to wherever the customer wishes to be served. The new scattered landscape of touchpoints and the rapid development of increasingly sophisticated technology have confronted marketers with new challenges and opportunities alike. Meanwhile, Swiss premium department sto...

  8. Digital mapping techniques '06 - Workshop proceedings

    Science.gov (United States)

    Soller, David R.

    2007-01-01

    The Digital Mapping Techniques `06 (DMT`06) workshop was attended by more than 110 technical experts from 51 agencies, universities, and private companies, including representatives from 27 state geological surveys (see Appendix A of these Proceedings). This workshop was similar in nature to the previous nine meetings, which were held in Lawrence, Kansas (Soller, 1997), Champaign, Illinois (Soller, 1998), Madison, Wisconsin (Soller, 1999), Lexington, Kentucky (Soller, 2000), Tuscaloosa, Alabama (Soller, 2001), Salt Lake City, Utah (Soller, 2002), Millersville, Pennsylvania (Soller, 2003), Portland, Oregon (Soller, 2004), and Baton Rouge, Louisiana (Soller, 2005). This year?s meeting was hosted by the Ohio Geological Survey, from June 11-14, 2006, on the Ohio State University campus in Columbus, Ohio. As in the previous meetings, the objective was to foster informal discussion and exchange of technical information. It is with great pleasure that I note that the objective was successfully met, as attendees continued to share and exchange knowledge and information, and renew friendships and collegial work begun at past DMT workshops.Each DMT workshop has been coordinated by the Association of American State Geologists (AASG) and U.S. Geological Survey (USGS) Data Capture Working Group, the latter of which was formed in August 1996 to support the AASG and the USGS in their effort to build a National Geologic Map Database (see Soller, this volume, and http://ngmdb.usgs.gov/info/standards/datacapt/). The Working Group was formed because increased production efficiencies, standardization, and quality of digital map products were needed for the database - and for the State and Federal geological surveys - to provide more high-quality digital maps to the public.At the 2006 meeting, oral and poster presentations and special discussion sessions emphasized: 1) methods for creating and publishing map products (here, "publishing" includes Web-based release); 2) field data

  9. Improving the Quality of and Access to Federally Funded, Digital Out of School Time Tutoring

    Science.gov (United States)

    Burch, Patricia; Heinrich, Carolyn; Good, Annalee

    2013-01-01

    Because digital tutoring is rapidly expanding, more rigorous, independent evaluations of their effectiveness is critical to inform federal, state, and local policy decisions that influence their role and application of technology in educating underserved students. The in-depth observations and vignettes in this paper illustrate the challenges in…

  10. Open digital badges in Open edX

    OpenAIRE

    Hickey, Daniel T.; Barba, Lorena A.; Lemoie, Kerri; Amigot, Michael; Ewens, Damian

    2014-01-01

    Slides for the presentation at the Open edX Conference, Cambridge, MA 2014.   This talk presented the first public update of our collaboration to implement open digital badges in Dr. Barba's new MOOC, "Practical Numerical Methods with Python." It's a collaboration between Indiana University's Center for Research on Learning and Technology (led by Prof. Daniel T. Hickey);  Prof. Lorena Barba and her team at George Washington University, with her partners at IBL Studios Education, and...

  11. ROTC Seeks to Expand on Campuses, and Colleges Cope with a Conflict

    Science.gov (United States)

    Wiedeman, Reeves

    2008-01-01

    With its forces stretched thin by the wars in Iraq and Afghanistan, the Army is looking to significantly expand the number of Reserve Officers' Training Corps programs on college campuses for the first time since the fall of the Berlin Wall in 1989, which led the Army to close more than 80 programs. At the University of Maryland-Baltimore County…

  12. Single-shot speckle reduction in numerical reconstruction of digitally recorded holograms: comment.

    Science.gov (United States)

    Maycock, Jonathan; Hennelly, Bryan; McDonald, John

    2015-09-01

    We comment on a recent Letter by Hincapie et al. [Opt. Lett.40, 1623 (2015)], in which the authors proposed a method to reduce the speckle noise in digital holograms. This method was previously published by us in Maycock ["Improving reconstructions of digital holograms," Ph.D. thesis (National University of Ireland, 2012)] and Maycock and Hennelly [Improving Reconstructions of Digital Holograms: Speckle Reduction and Occlusions in Digital Holography (Lambert Academic, 2014)]. We also wish to highlight an important limitation of the method resulting from the superposition of different perspectives of the object/scene, which was not addressed in their Letter.

  13. Digital reporting by small private companies in the UK

    OpenAIRE

    Alkhatib, Esraa

    2016-01-01

    This thesis was submitted for the award of Doctor of Philosophy and was awarded by Brunel University London. Abstract This thesis investigates the factors that affect the take-up of statutory digital reporting of statutory accounts and returns to the tax authority (HM Revenue and Customs) and voluntary digital reporting to the company registry (Companies House) by small private companies in the UK. In doing so, it identifies the costs and benefits of this innovation from the perspective...

  14. Digital Voting Systems and Communication in Classroom Lectures

    DEFF Research Database (Denmark)

    Mathiasen, Helle

    2015-01-01

    Studies on the use of digital voting systems in large group teaching situations have often focused on the ”non-anonymity” and control and testing functions that the technology provides. There has also been some interest in how students might use their votes tactically to gain “credits”. By focusing...... on an empirical study of students’ experiences with digital voting systems in lectures at two Danish universities, this study considers the premises and the contexts surrounding this technology. It will also aim to show that for both instructors and students, digital voting systems are a much broader resource...... than simply a device for facilitating ”non-anonymity”, test, control and allocation of credits. The case studies showed, for instance, that digital voting systems can be conducive to a more open approach in which the systems are used as communication tools and teaching resources in situations where...

  15. Examining Digital Literacy Competences and Learning Habits of Open and Distance Learners

    Science.gov (United States)

    Ozdamar-Keskin, Nilgun; Ozata, Fatma Zeynep; Banar, Kerim; Royle, Karl

    2015-01-01

    The purpose of the study is to examine digital literacy competences and learning habits of learners enrolled in the open and distance education system of Anadolu University in Turkey. Data were gathered from 20.172 open and distance learners through a survey which included four parts: demographic information, abilities to use digital technologies,…

  16. Comparison of self-expandable and balloon-expanding stents for hybrid ductal stenting in hypoplastic left heart complex.

    Science.gov (United States)

    Goreczny, Sebastian; Qureshi, Shakeel A; Rosenthal, Eric; Krasemann, Thomas; Nassar, Mohamed S; Anderson, David R; Morgan, Gareth J

    2017-07-01

    We aimed to compare the procedural and mid-term performance of a specifically designed self-expanding stent with balloon-expandable stents in patients undergoing hybrid palliation for hypoplastic left heart syndrome and its variants. The lack of specifically designed stents has led to off-label use of coronary, biliary, or peripheral stents in the neonatal ductus arteriosus. Recently, a self-expanding stent, specifically designed for use in hypoplastic left heart syndrome, has become available. We carried out a retrospective cohort comparison of 69 neonates who underwent hybrid ductal stenting with balloon-expandable and self-expanding stents from December, 2005 to July, 2014. In total, 43 balloon-expandable stents were implanted in 41 neonates and more recently 47 self-expanding stents in 28 neonates. In the balloon-expandable stents group, stent-related complications occurred in nine patients (22%), compared with one patient in the self-expanding stent group (4%). During follow-up, percutaneous re-intervention related to the ductal stent was performed in five patients (17%) in the balloon-expandable stent group and seven patients (28%) in self-expanding stents group. Hybrid ductal stenting with self-expanding stents produced favourable results when compared with the results obtained with balloon-expandable stents. Immediate additional interventions and follow-up re-interventions were similar in both groups with complications more common in those with balloon-expandable stents.

  17. Ion trap simulations of quantum fields in an expanding universe.

    Science.gov (United States)

    Alsing, Paul M; Dowling, Jonathan P; Milburn, G J

    2005-06-10

    We propose an experiment in which the phonon excitation of ion(s) in a trap, with a trap frequency exponentially modulated at rate kappa, exhibits a thermal spectrum with an "Unruh" temperature given by k(B)T=Planck kappa. We discuss the similarities of this experiment to the response of detectors in a de Sitter universe and the usual Unruh effect for uniformly accelerated detectors. We demonstrate a new Unruh effect for detectors that respond to antinormally ordered moments using the ion's first blue sideband transition.

  18. Information services and digital literacy in search of the boundaries of knowing

    CERN Document Server

    Huvila, Isto

    2012-01-01

    Despite new technologies, people do not always find information with ease. Do people still need help in finding the information they need, and if so, why? What can be made easier with new tools and techniques? Information Services and Digital Literacy is about the role of information services and digital literacies in the age of the social web. This title provides an alternative perspective for understanding information services and digital literacy, and argues that a central problem in the age of the social web and the culture of participation is that we do not know the premises of how we know, and how ways of interacting with information affect our actions and their outcomes. Information seeking is always a question of crossing and expanding boundaries between our earlier experiences and the unknown. We may not yet be well enough acquainted with the landscape of digital information to understand how we know, where the boundaries to our knowledge lie, how to cross them, and what consequences our actions may ...

  19. Barriers to Blended Digital Distance Vocational Learning for Non-Traditional Students

    Science.gov (United States)

    Safford, Kimberly; Stinton, Julia

    2016-01-01

    This research identifies and examines the challenges of blending digital distance and vocational learning for non-traditional and low-socio-economic status students who are new to university education. A survey of students in vocational primary education and early years qualifications in a distance university is illuminated by interviews with…

  20. Instrument for Real-Time Digital Nucleic Acid Amplification on Custom Microfluidic Devices.

    Directory of Open Access Journals (Sweden)

    David A Selck

    Full Text Available Nucleic acid amplification tests that are coupled with a digital readout enable the absolute quantification of single molecules, even at ultralow concentrations. Digital methods are robust, versatile and compatible with many amplification chemistries including isothermal amplification, making them particularly invaluable to assays that require sensitive detection, such as the quantification of viral load in occult infections or detection of sparse amounts of DNA from forensic samples. A number of microfluidic platforms are being developed for carrying out digital amplification. However, the mechanistic investigation and optimization of digital assays has been limited by the lack of real-time kinetic information about which factors affect the digital efficiency and analytical sensitivity of a reaction. Commercially available instruments that are capable of tracking digital reactions in real-time are restricted to only a small number of device types and sample-preparation strategies. Thus, most researchers who wish to develop, study, or optimize digital assays rely on the rate of the amplification reaction when performed in a bulk experiment, which is now recognized as an unreliable predictor of digital efficiency. To expand our ability to study how digital reactions proceed in real-time and enable us to optimize both the digital efficiency and analytical sensitivity of digital assays, we built a custom large-format digital real-time amplification instrument that can accommodate a wide variety of devices, amplification chemistries and sample-handling conditions. Herein, we validate this instrument, we provide detailed schematics that will enable others to build their own custom instruments, and we include a complete custom software suite to collect and analyze the data retrieved from the instrument. We believe assay optimizations enabled by this instrument will improve the current limits of nucleic acid detection and quantification, improving our