WorldWideScience

Sample records for surrey tw20 0ex

  1. Characterizing TW Hydra

    Science.gov (United States)

    Sokal, Kimberly R.; Deen, Casey P.; Mace, Gregory N.; Lee, Jae-Joon; Oh, Heeyoung; Kim, Hwihyun; Kidder, Benjamin T.; Jaffe, Daniel T.

    2018-02-01

    At 60 pc, TW Hydra (TW Hya) is the closest example of a star with a gas-rich protoplanetary disk, though TW Hya may be relatively old (3–15 Myr). As such, TW Hya is especially appealing for testing our understanding of the interplay between stellar and disk evolution. We present a high-resolution near-infrared spectrum of TW Hya obtained with the Immersion GRating INfrared Spectrometer (IGRINS) to re-evaluate the stellar parameters of TW Hya. We compare these data to synthetic spectra of magnetic stars produced by MoogStokes, and use sensitive spectral line profiles to probe the effective temperature, surface gravity, and magnetic field. A model with {T}{eff}=3800 K, {log} g=4.2, and B=3.0 kG best fits the near-infrared spectrum of TW Hya. These results correspond to a spectral type of M0.5 and an age of 8 Myr, which is well past the median life of gaseous disks.

  2. DISCOVERY OF A DISK GAP CANDIDATE AT 20 AU IN TW HYDRAE

    Energy Technology Data Exchange (ETDEWEB)

    Akiyama, E.; Kusakabe, N.; Kandori, R. [National Astronomical Observatory of Japan, 2-21-1, Osawa, Mitaka, Tokyo 181-8588 (Japan); Muto, T. [Division of Liberal Arts, Kogakuin University, 1-24-2, Nishi-Shinjuku, Shinjuku-ku, Tokyo 163-8677 (Japan); Kataoka, A.; Kuzuhara, M. [Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1, Oklahoma, Ookayama, Meguro-ko, Tokyo 152-8551 (Japan); Hashimoto, J.; Wisniewski, J. [Department of Physics and Astronomy, The University of Oklahoma, 440 W. Brooks Street, Norman, OK 73019 (United States); Tsukagoshi, T. [College of Science, Ibaraki University, 2-1-1, Bunkyo, Mito, Ibaraki 310-8512 (Japan); Kwon, J. [Department of Astronomy, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Kudo, T.; Currie, T. [Subaru Telescope, National Astronomical Observatory of Japan, 650, North A' ohoku Place, Hilo, HI 96720 (United States); Grady, C. A. [Eureka Scientific, 2452 Delmer, Suite 100, Oakland, CA 96002 (United States); Takami, M. [Institute of Astronomy and Astrophysics, Academia Sinica, P.O. Box 23-141, Taipei 10617, Taiwan (China); Janson, M. [Department of Astronomy, Stockholm University, AlbaNova University Center, Stockholm, SE-106 91 (Sweden); Henning, T.; Carson, J. C. [Max Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg (Germany); Sitko, M. L. [Space Science Institute, 4750 Walnut Street, Suite 205, Boulder, CO 80301 (United States); Mayama, S. [The Center for the Promotion of Integrated Sciences, The Graduate University for Advance Studies, Shonan International Village, Hayama-cho, Miura-gun, Kanagawa 240-0115 (Japan); Thalmann, C., E-mail: eiji.akiyama@nao.ac.jp [Institute for Astronomy, ETH Zurich, Wolfgang-Pauli-Strasse 27, CH-8093 Zurich (Switzerland); and others

    2015-04-01

    We present a new Subaru/HiCIAO high-contrast H-band polarized intensity (PI) image of a nearby transitional disk associated with TW Hydrae. The scattered light from the disk was detected from 0.″ 2 to 1.″ 5 (11–81 AU) and the PI image shows a clear axisymmetric depression in PI at ∼0.″ 4 (∼20 AU) from the central star, similar to the ∼80 AU gap previously reported from Hubble Space Telescope images. The azimuthal PI profile also shows that the disk beyond 0.″ 2 is almost axisymmetric. We discuss two possible scenarios explaining the origin of the PI depression: (1) a gap structure may exist at ∼20 AU from the central star because of a shallow slope seen in the PI profile, and (2) grain growth may be occurring in the inner region of the disk. Multi-band observations at near-infrared and millimeter/submillimeter wavelengths play a complementary role in investigating dust opacity and may help reveal the origin of the gap more precisely.

  3. 100 TW CPA Nd: Glass laser for fast ignition research

    International Nuclear Information System (INIS)

    Fujita, H.; Daido, H.; Jitsuno, T.

    2001-01-01

    A 100 TW chirped pulse amplification (CPA) Nd:glass laser has been developed to investigate the fast ignition concept. The ultrashort-pulse (60 TW, 42 J, 0.7 ps) was focused on plane targets, plane targets with preformed plasma, and high density compressed plasmas produced by the GEKKO-XII (12 beam, 20 kJ) laser. Focus intensity of >10 19 W/cm 2 has been achieved. (author)

  4. PubMed-EX: a web browser extension to enhance PubMed search with text mining features.

    Science.gov (United States)

    Tsai, Richard Tzong-Han; Dai, Hong-Jie; Lai, Po-Ting; Huang, Chi-Hsin

    2009-11-15

    PubMed-EX is a browser extension that marks up PubMed search results with additional text-mining information. PubMed-EX's page mark-up, which includes section categorization and gene/disease and relation mark-up, can help researchers to quickly focus on key terms and provide additional information on them. All text processing is performed server-side, freeing up user resources. PubMed-EX is freely available at http://bws.iis.sinica.edu.tw/PubMed-EX and http://iisr.cse.yzu.edu.tw:8000/PubMed-EX/.

  5. Surrey Ion Beam Centre: the EPSRC MRF for ion beam applications - 01002

    International Nuclear Information System (INIS)

    Webb, R.P.

    2016-01-01

    The SIBC (Surrey Ion Beam Centre) is an element of the Virtual Ion Beam Centre that coordinates 3 U.K. experimental facilities: SIBC (University of Surrey) for implantation and ion beam applications, Miami and MEIS facility (University of Huddersfield) and gamma ray and neutron irradiation emulation facility (University of Manchester). The SIBC works actively with industry, developing bespoke processes and services, particularly for the photonics industry and provides ion beam facilities to about 20 companies across the world. It operates a stringent quality control program and is one of the few ion beam laboratories in the world to operate under ISO 9001 certification. The equipment of SIBC is presented and some applications of ion beam analysis concerning the identification of gunshot residues, the determination of the origin of a painting, the analysis of proteins are described. Different techniques such as PIXE (Particle Induced X-ray Emission), RBS (Rutherford Backscattering Spectroscopy), NRA (Nuclear Reaction Analysis), SIMS (Secondary Ion Mass Spectrometry) are also explained in the slides of the presentation that have been added at the end of the paper

  6. PBFA Z: A 60-TW/5-MJ Z-pinch driver

    International Nuclear Information System (INIS)

    Spielman, R.B.; Deeney, C.; Chandler, G.A.; Douglas, M.R.; Fehl, D.L.; Matzen, M.K.; McDaniel, D.H.; Nash, T.J.; Porter, J.L.; Sanford, T.W.; Seamen, J.F.; Stygar, W.A.; Struve, K.W.; Breeze, S.P.; McGurn, J.S.; Torres, J.A.; Zagar, D.M.; Gilliland, T.L.; Jobe, D.O.; McKenney, J.L.; Mock, R.C.; Vargas, M.; Wagoner, T.; Peterson, D.L.

    1997-01-01

    PBFA Z, a new 60-TW/5-MJ electrical accelerator located at Sandia National Laboratories, is now the world's most powerful z-pinch driver. PBFA Z stores 11.4 MJ in its 36 Marx generators, couples 5 MJ into a 60-TW/105-ns FWHM pulse to the 120-mΩ water transmission lines, and delivers 3.0 MJ and 50 TW of electrical energy to the z-pinch load. Depending on load parameters, we attain peak load currents of 16-20 MA with a current rise time of ∼105ns with wire-array z-pinch loads. We have extended the x-ray performance of tungsten wire-array z pinches from earlier Saturn experiments. Using a 2-cm-radius, 2-cm-long tungsten wire array with 240, 7.5-μm diameter wires (4.1-mg mass), we achieved an x-ray power of 210 TW and an x-ray energy of 1.9 MJ. Preliminary spectral measurements suggest a mostly optically-thick, Planckian-like radiator below 1000 eV. Data indicate ∼100kJ of x rays radiated above 1000 eV. An intense z-pinch x-ray source with an overall coupling efficiency greater than 15% has been demonstrated. copyright 1997 American Institute of Physics

  7. The 0.5 micrometer-2.2 micrometer Scattered Light Spectrum of the Disk Around TW Hya

    Science.gov (United States)

    Debes, John H.; Jang-Condell, Hannah; Weinberger, Alycia J.; Roberg, Aki; Schneider, Glenn

    2012-01-01

    We present a 0.5-2.2micron scattered light spectrum of the circumstellar disk around TW Hya from a combination of spatially resolved HST STIS spectroscopy and NICMOS coronagraphic images of the disk. \\Ve investigate the morphology at the disk at distances> 40 AU over this wide range of wavelengths. We measure the surface brightness, azimuthal symmetry, and spectral character of the disk as a function of radius. We find that the scattering efficiency of the dust is largely neutral to blue over the observed wavelengths. We find a good fit to the data over a wide range of distances from the star if we use a model disk with a partial gap of 30% depth at 80 AU and with steep disk truncation exterior to 100 AU. If the gap is caused by a planetary companion in the process of accreting disk gas, it must be less than 20 Solar mass.

  8. Laser fusion experiments at 2 TW

    International Nuclear Information System (INIS)

    Storm, E.K.; Ahlstrom, H.G.; Boyle, M.J.

    1976-01-01

    The Lawrence Livermore Laboratory Solid State Laser System, Argus, has successfully performed laser implosion experiments at power levels exceeding 2 TW. D-T filled glass microspheres have been imploded to yield thermonuclear reaction products in excess of 5 x 10 8 per event. Neutron and α time-of-flight measurements indicate that D-T ion temperatures of approximately 5 to 6 keV and a density confinement time product (n tau) of approximately 1 x 10 12 were obtained in these experiments. Typically two 40J, 40 psec pulses of 1.06 μm light were focused on targets using 20 cm aperture f/l lenses, producing intensities at the target in excess of 10 16 W/cm 2 . An extensive array of diagnostics routinely monitored the laser performance and the laser target interaction process. Measurements of absorption and asymmetry in both the scattered light distribution and the ion blow off is evidence for non-classical absorption mechanisms and density scale heights of the order of 2 μm or less. The symmetry of the thermonuclear burn region is investigated by monitoring the α-particle flux in several directions, and an experiment to image the thermonuclear burn region is in process. These experiments significantly extend our data base and our understanding of laser induced thermonuclear implosions and the basic laser plasma interaction physics from the 0.4 to 0.7 TW level of previous experiments

  9. Laser fusion experiments at 2 TW

    International Nuclear Information System (INIS)

    Storm, E.K.; Ahlstrom, H.G.; Boyle, M.J.

    1976-01-01

    The Lawrence Livermore Laboratory Solid State Laser System, Arqus, has successfully performed laser implosion experiments at power levels exceeding 2 TW. D-T filled glass microspheres have been imploded to yield thermonuclear reaction products in excess of 5 x 10 8 per event. Neutron and α time-of-flight measurements indicate that D-T ion temperatures of approximately 5-6 keV and a density confinement time product (n tau) of approximately 1 x 10 12 were obtained in these experiments. Typically two 40J, 40 psec pulses of 1.06 μm light were focused on targets using 20 cm aperture f/1 lenses, producing intensities at the target in excess of 10 16 W/cm 2 . An extensive array of diagnostics routinely monitored the laser performance and the laser target interaction process. Measurements of absorption and asymmetry in both the scattered light distribution and the ion blow off is evidence for non-classical absorption mechanisms and density scale heights of the order of 2 μm or less. The symmetry of the thermonuclear burn region is investigated by monitoring the α-particle flux in several directions, and an experiment to image the thermonuclear burn region is in process. These experiments significantly extend our data base and our understanding of laser induced thermonuclear implosions and the basic laser plasma interaction physics from the 0.4 to 0.7 TW level of previous experiments

  10. PBFA Z: A 55 TW/4.5 MJ electrical generator

    International Nuclear Information System (INIS)

    Spielman, R.B.; Stygar, W.A.; Struve, K.W.; Seamen, J.F.

    1997-01-01

    PBFA Z is a new 55 TW/4.5 MJ short pulse electrical driver located at Sandia National Laboratories. The authors use PBFA Z to magnetically-implode plasma shells. These configurations are historically known as z pinches. The pulsed power design of PBFA Z is based on conventional single-pulse Marx generator, water-line pulse-forming technology used on the earlier Saturn and PBFA II accelerators. PBFA Z stores 11.4 MJ in a 55-TW/105-ns pulse to the output water transmission lines, and delivers up to 3.0 MJ and 40 TW of electrical energy to the z-pinch load. Depending on the initial load inductance and the implosion time, they attain peak currents of 16--20 MA with a rise time of 105 ns. Current is fed to the z-pinch load through self magnetically-insulated transmission lines (MITLs). Peak electric fields in the MITLs exceed 2 MV/cm. The current from the four independent conical disk MITLs is combined together in a double post-hole vacuum convolute with an efficiency greater than 95%. The measured system performance of the water transmission lines, the vacuum insulator stack, the MITLs, and the double post-hole vacuum convolute differed from preshot predictions by ∼ 5%. Using a 2-cm radius and a 2-cm length tungsten wire array with 240, 7.5-microm diameter wires (4.1-mg mass) as the z-pinch load, they achieved x-ray powers of 200 TW and x-ray energies of 1.85 MJ as measured by x-ray diodes and resistive bolometry

  11. Biomass heating at East Surrey Hospital: technical evaluation

    Energy Technology Data Exchange (ETDEWEB)

    Landen, R; Rippengal, R

    2000-07-01

    This report provides the results of a detailed evaluation of the proposed biomass heating installation at East Surrey Hospital. It is intended to allow the Trust to make a decision on whether to proceed further with the scheme and, if so, on what basis. Specific areas assessed and reported on include: existing services provision for heating and cooling; technical aspects of the proposed biomass scheme; commercial aspects of the proposed biomass scheme. (author)

  12. North West Surrey's locality hubs - delivering integrated care

    OpenAIRE

    Compton, Lisa; Wilkinson, Peter; Lawn, Liz

    2017-01-01

    Introduction: North West Surrey CCG (NWSCCG) is establishing Locality Hubs – physical buildings offering a fully integrated GP-led, multi-disciplinary ‘one-stop-shop’ services in the community for a defined cohort of frail elderly patients with multiple core morbidities. Hubs will ultimately deliver proactive and reactive care, available 24 hours a day, 365 days a year.The key drivers are;Ageing population, people living longer & more people living with chronic conditionsCost & demand...

  13. Silicon photonics at the University of Surrey

    Science.gov (United States)

    Reed, G. T.; Mashanovich, G.; Gardes, F. Y.; Gwilliam, R. M.; Wright, N. M.; Thomson, D. J.; Timotijevic, B. D.; Litvinenko, K. L.; Headley, W. R.; Smith, A. J.; Knights, A. P.; Jessop, P. E.; Tarr, N. G.; Deane, J. H. B.

    2009-05-01

    Silicon Photonics is a field that has seen rapid growth and dramatic changes in the past 5 years. According to the MIT Communications Technology Roadmap [1], which aims to establish a common architecture platform across market sectors with a potential $20B in annual revenue, silicon photonics is among the top ten emerging technologies. This has in part been a consequence of the recent involvement of large semiconductor companies around the world, particularly in the USA. Significant investment in the technology has also followed in Japan, Korea, and in the European Union. Low cost is a key driver, so it is imperative to pursue technologies that are mass-producible. Therefore, Silicon Photonics continues to progress at a rapid rate. This paper will describe some of the work of the Silicon Photonics Group at the University of Surrey in the UK. The work is concerned with the sequential development of a series of components for silicon photonic optical circuits, and some of the components are discussed here. In particular the paper will present work on optical waveguides, optical filters, modulators, and lifetime modification of carriers generated by two photon absorption, to improve the performance of Raman amplifiers in silicon.

  14. Hohlraum energetics scaling to 520 TW on the National Ignition Facilitya)

    Science.gov (United States)

    Kline, J. L.; Callahan, D. A.; Glenzer, S. H.; Meezan, N. B.; Moody, J. D.; Hinkel, D. E.; Jones, O. S.; MacKinnon, A. J.; Bennedetti, R.; Berger, R. L.; Bradley, D.; Dewald, E. L.; Bass, I.; Bennett, C.; Bowers, M.; Brunton, G.; Bude, J.; Burkhart, S.; Condor, A.; Di Nicola, J. M.; Di Nicola, P.; Dixit, S. N.; Doeppner, T.; Dzenitis, E. G.; Erbert, G.; Folta, J.; Grim, G.; Glenn, S.; Hamza, A.; Haan, S. W.; Heebner, J.; Henesian, M.; Hermann, M.; Hicks, D. G.; Hsing, W. W.; Izumi, N.; Jancaitis, K.; Jones, O. S.; Kalantar, D.; Khan, S. F.; Kirkwood, R.; Kyrala, G. A.; LaFortune, K.; Landen, O. L.; Lagin, L.; Larson, D.; Pape, S. Le; Ma, T.; MacPhee, A. G.; Michel, P. A.; Miller, P.; Montincelli, M.; Moore, A. S.; Nikroo, A.; Nostrand, M.; Olson, R. E.; Pak, A.; Park, H. S.; Patel, J. P.; Pelz, L.; Ralph, J.; Regan, S. P.; Robey, H. F.; Rosen, M. D.; Ross, J. S.; Schneider, M. B.; Shaw, M.; Smalyuk, V. A.; Strozzi, D. J.; Suratwala, T.; Suter, L. J.; Tommasini, R.; Town, R. P. J.; Van Wonterghem, B.; Wegner, P.; Widmann, K.; Widmayer, C.; Wilkens, H.; Williams, E. A.; Edwards, M. J.; Remington, B. A.; MacGowan, B. J.; Kilkenny, J. D.; Lindl, J. D.; Atherton, L. J.; Batha, S. H.; Moses, E.

    2013-05-01

    Indirect drive experiments have now been carried out with laser powers and energies up to 520 TW and 1.9 MJ. These experiments show that the energy coupling to the target is nearly constant at 84% ± 3% over a wide range of laser parameters from 350 to 520 TW and 1.2 to 1.9 MJ. Experiments at 520 TW with depleted uranium hohlraums achieve radiation temperatures of ˜330 ± 4 eV, enough to drive capsules 20 μm thicker than the ignition point design to velocities near the ignition goal of 370 km/s. A series of three symcap implosion experiments with nearly identical target, laser, and diagnostics configurations show the symmetry and drive are reproducible at the level of ±8.5% absolute and ±2% relative, respectively.

  15. Middle English Preposition Twēn(E

    Directory of Open Access Journals (Sweden)

    Ciszek-Kiliszewska Ewa

    2014-12-01

    Full Text Available The present paper focuses on the Middle English preposition twēn(e ‘between, among, in between’. The aim of the study is to review the acknowledged etymology of twēn(e as well as to provide its semantics, dialect distribution, complete textual distribution (record of texts employing twēn(e, and absolute token frequency. Moreover, all texts including the preposition twēn(e are subject to an analysis of the whole variety of prepositions meaning ‘between’ and their token frequency in order to establish the proportions of the use of twēn(e and other discussed prepositions, especially the better established preposition betwēn(e in texts employing twēn(e. The study is based on such extensive electronic databases as the Middle English Dictionary online, the Oxford English Dictionary online and the Corpus of Middle English Prose and Verse as well as on a number of complete Middle English texts. The study of the corpus demonstrates the presence of twēn(e and other prepositions meaning ‘between’ also in texts not listed by the Middle English Dictionary online or the Oxford English Dictionary online under appropriate entries, and thus helps to provide a more complete record of texts and authors utilizing twēn(e and the extent of use of twēn(e as compared to other prepositions meaning ‘between’. Moreover, the study demonstrates that also the other discussed prepositions are often not recorded in particular texts by the MED online or the OED online. In more general terms, the paper points out the need for the use of complete texts for the study of historical prepositions.

  16. Amplification and focusing of a picosecond chirped pulse to 20TW and 5x1017W/cm2

    International Nuclear Information System (INIS)

    Sauteret, C.; Husson, D.; Rouyer, C.; Seznec, S.; Gary, S.

    1991-01-01

    Pulses of 20 TW power have been generated at 1064 nm using the Chirped Pulse Amplification technique coupled to a 90 mm output aperture powerful Nd:silicate glass amplification line. This system delivers 60 J in a chirped pulse of 600 ps duration with a capacity of maintaining 3.5 nm output bandwidth. These chirped pulses have been compressed to 1.2 ps with an energy of 24J using large holographic diffraction gratings. After presenting the results we discuss the expected applications in atomic and plasma physics

  17. Overexpression and RNA interference of TwDXR regulate the accumulation of terpenoid active ingredients in Tripterygium wilfordii.

    Science.gov (United States)

    Zhang, Yifeng; Zhao, Yujun; Wang, Jiadian; Hu, Tianyuan; Tong, Yuru; Zhou, Jiawei; Song, Yadi; Gao, Wei; Huang, Luqi

    2018-02-01

    To examine the putative regulatory role of TwDXR in terpenoid biosynthesis and terpenoid biosynthetic pathway-related gene expression, through overexpression and RNA interference with TwDXR. We obtained 1410 and 454 bp TwDXR-specific fragments to construct overexpression and RNAi vectors. qRT-PCR was used to detect the expression of TwDXR and terpenoid biosynthesis pathway-related genes. The overexpression of TwDXR led to a 285% upregulation and the TwDXR RNAi led to a reduction to 26% of the control (empty vector-transformed cells) levels. However, pathway-related genes displayed different trends. When TwDXR was overexpressed, TwDXS expression decreased by 31% but increased to 198% when TwDXR expression was inhibited. The accumulation of terpenoids was also assayed. In the overexpression group, differences were not significant whereas the contents of triptolide and celastrol in the TwDXR RNAi samples were diminished by 27.3 and 24.0%, respectively. The feedback regulation of gene transcription and the accumulation of terpenoids in terpenoid biosynthesis in Tripterygium wilfordii were verified by TwDXR overexpression and RNAi experiments.

  18. Web 2.0, Library 2.0, and Librarian 2.0:Preparing for the 2.0 World

    Science.gov (United States)

    Abram, S.

    2007-10-01

    There is a global conversation going on right now about the next generation of the web. It's happening under the name of Web 2.0. It's the McLuhanesque hot web where true human interaction takes precedence over merely `cool' information delivery and e-mail. It's about putting information into the real context of our users' lives, research, work and play. Concurrently, a group of information professionals are having a conversation about the vision for what Library 2.0 will look like in this Web 2.0 ecosystem. Some are even going so far as to talk about Web 3.0! Web 2.0 is coming fast and it's BIG! What are the skills and competencies that Librarian 2.0 will need? Come and hear an overview of Web 2.0 and a draft vision for Library 2.0 and an opinion about what adaptations we'll need to make to thrive in this future scenario. Let's talk about the Librarian 2.0 in our users' future!

  19. Characterization of aluminum x-pinch plasmas driven by the 0.5 TW Lion accelerator

    International Nuclear Information System (INIS)

    Qi, N.; Hammer, D.A.; Kalantantar, D.H.; Noonan, W.A.; Rondeau, G.; Workman, J.B.; Richardson, M.C.

    1989-01-01

    The x-pinch, obtained by crossing two fine wires at one or more points as the load for the 0.5 TW Lion accelerator, has been used as a bright x-ray source. High density and temperature hot spots are observed at the crossing point(s). From these hot spots, an intense, spatially confined burst of x-rays is emitted which can serve as a pump for resonant photo-pumping lasers. The authors present experimental results concerning the radiation emission using Al x-pinches. The optimum mass loading for different ionization stages of Al ions and the total x-ray energy yields are examined. The density and temperature of the plasma and the size of the hot spots are measures. Based upon the results of these experiments, the authors evaluate resonant photopumping schemes such as those involving Be-like ions, using the Al x-pinch emission as the pump source

  20. Description of durancin TW-49M, a novel enterocin B-homologous bacteriocin in carrot-isolated Enterococcus durans QU 49.

    Science.gov (United States)

    Hu, C-B; Zendo, T; Nakayama, J; Sonomoto, K

    2008-09-01

    To characterize the novel bacteriocin produced by Enterococcus durans. Enterococcus durans QU 49 was isolated from carrot and expressed bactericidal activity over 20-43 degrees C. Bacteriocins were purified to homogeneity using the three-step purification method, one of which, termed durancin TW-49M, was an enterocin B-homologous peptide with most identical residues occurring in the N-terminus. Durancin TW-49M was more tolerant in acidic than in alkali. DNA sequencing analysis revealed durancin TW-49M was translated as a prepeptide of the double-glycine type. Durancin TW-49M and enterocin B expressed similar antimicrobial spectra, in which no significant variation due to the diversity in their C-termini was observed. Durancin TW-49M, a novel nonpediocin-like class II bacteriocin, was characterized to the amino acid and genetic levels. The diverse C-terminal parts of durancin TW-49M and enterocin B were hardly to be suggested as the place determining the target cell specificity. This is the first and comprehensive study of a novel bacteriocin produced by Ent. durans. The high homology at the N-terminal halves between durancin TW-49M and enterocin B makes them suitable to study the structure-function relationship of bacteriocins and their immunity proteins.

  1. Transistor properties of exfoliated single crystals of 2 H -Mo (Se1-xT ex ) 2(0 ≤x ≤1 )

    Science.gov (United States)

    Uesugi, Eri; Miao, Xiao; Ota, Hiromi; Goto, Hidenori; Kubozono, Yoshihiro

    2017-06-01

    Field-effect transistors (FETs) were fabricated using exfoliated single crystals of Mo (Se1-xT ex) 2 with an x range of 0 to 1, and the transistor properties fully investigated at 295 K in four-terminal measurement mode. The chemical composition and crystal structure of exfoliated single crystals were identified by energy-dispersive x-ray spectroscopy (EDX), single-crystal x-ray diffraction, and Raman scattering, suggesting the 2 H - structure in all Mo (Se1-xT ex) 2 . The lattice constants of a and c increase monotonically with increasing x , indicating the substitution of Se by Te. When x 0.4 . In contrast, the polarity of a thick single-crystal Mo (Se1-xT ex) 2 FET did not change despite an increase in x . The change of polarity in a thin single-crystal FET was well explained by the variation of electronic structure. The absence of such change in the thick single-crystal FET can be reasonably interpreted based on the large bulk conduction due to naturally accumulated electrons. The μ value in the thin single-crystal FET showed a parabolic variation, with a minimum μ at around x =0.4 , which probably originates from the disorder of the single crystal caused by the partial replacement of Se by Te, i.e., a disorder that may be due to ionic size difference of Se and Te.

  2. PBFA Z: A 50 TW/5 MJ Electrical Generator

    Science.gov (United States)

    Spielman, R. B.

    1997-05-01

    PBFA Z is a new 50 TW/5 MJ short electrical driver located at Sandia National Laboratories. We use PBFA Z to magnetically-implode solid or plasma shells. These configurations are historically known as z pinches. The pulsed power design of PBFA Z(R. B. Spielman, et al., Proc. of the Ninth IEEE Pulsed Power Conf., Albuquerque, NM 1995) is based on conventional single-pulse Marx generator, water-line pulse-forming technology used on the earlier Saturn (D. D. Bloomquist, et al., Proc. of the Sixth IEEE Pulsed Power Conf., Arlington, VA edited by P. J. Turchi and B. H. Bernstein (IEEE, New York, 1987), p. 310) and PBFA II(B. N. Turman, et al., Proc. of the Fifth IEEE Pulsed Power Conf., Arlington, VA 1985, pp. 155) accelerators. PBFA Z stores 11.4 MJ in its 36 Marx generators, couples 5 MJ in a 50 TW/100 ns pulse to the output water transmission lines, and delivers 3.4 MJ and 40 TW of electrical energy to the z-pinch load. Depending on the initial load inductance and the implosion time, we attain a peak current of 16-20 MA with a rise time of 105 ns. Current is fed to the z-pinch load through self magnetically-insulated transmission lines (MITLs). Peak electric fields in the MITLs exceed 2 MV /cm. The current from the four independent conical disk MITLs is combined together in a double post-hole vacuum convolute with an efficiency greater than 95%. The measured system performance of the water transmission lines, the vacuum insulator stack, the MITLs, and the double post-hole vacuum convolute differed from preshot predictions by ~ 5%. Using a 2-cm radius and a 2-cm length tungsten wire array with 240, 7.5-=B5m diameter wires (4.1-mg mass) as the z-pinch load, we achieved x-ray powers of 160 TW and x-ray energies of 1.85 MJ as measured by x-ray diodes and resistive bolometry.

  3. Multicultural Arts Education in the Post-Secondary Context?: Creating Installation and Performance Art in Surrey, Canada

    Science.gov (United States)

    Colby, Sasha

    2011-01-01

    In 2007, Simon Fraser University's satellite campus in Surrey, British Columbia, received an Official Languages Dissemination Grant from the Social Sciences and Humanities Research Council of Canada to examine the role of official bilingualism in the multilingual context through installation and performance art. This essay considers the processes…

  4. Patterning and gastrulation defects caused by the tw18 lethal are due to loss of Ppp2r1a

    Directory of Open Access Journals (Sweden)

    Lisette Lange

    2017-06-01

    Full Text Available The mouse t haplotype, a variant 20 cM genomic region on Chromosome 17, harbors 16 embryonic control genes identified by recessive lethal mutations isolated from wild mouse populations. Due to technical constraints so far only one of these, the tw5 lethal, has been cloned and molecularly characterized. Here we report the molecular isolation of the tw18 lethal. Embryos carrying the tw18 lethal die from major gastrulation defects commencing with primitive streak formation at E6.5. We have used transcriptome and marker gene analyses to describe the molecular etiology of the tw18 phenotype. We show that both WNT and Nodal signal transduction are impaired in the mutant epiblast, causing embryonic patterning defects and failure of primitive streak and mesoderm formation. By using a candidate gene approach, gene knockout by homologous recombination and genetic rescue, we have identified the gene causing the tw18 phenotype as Ppp2r1a, encoding the PP2A scaffolding subunit PR65alpha. Our work highlights the importance of phosphatase 2A in embryonic patterning, primitive streak formation, gastrulation, and mesoderm formation downstream of WNT and Nodal signaling.

  5. Mapping of the Pim-1 oncogene in mouse t-haplotypes and its use to define the relative map positions of the tcl loci t0(t6) and tw12 and the marker tf (tufted).

    Science.gov (United States)

    Ark, B; Gummere, G; Bennett, D; Artzt, K

    1991-06-01

    Pim-1 is an oncogene activated in mouse T-cell lymphomas induced by Moloney and AKR mink cell focus (MCF) viruses. Pim-1 was previously mapped to chromosome 17 by somatic cell hybrids, and subsequently to the region between the hemoglobin alpha-chain pseudogene 4 (Hba-4ps) and the alpha-crystalline gene (Crya-1) by Southern blot analysis of DNA obtained from panels of recombinant inbred strains. We have now mapped Pim-1 more accurately in t-haplotypes by analysis of recombinant t-chromosomes. The recombinants were derived from Tts6tf/t12 parents backcrossed to + tf/ + tf, and scored for recombination between the loci of T and tf. For simplicity all t-complex lethal genes properly named tcl-tx are shortened to tx. The Pim-1 gene was localized 0.6 cM proximal to the tw12 lethal gene, thus placing the Pim-1 gene 5.2 cM distal to the H-2 region in t-haplotypes. Once mapped, the Pim-1 gene was used as a marker for further genetic analysis of t-haplotypes. tw12 is so close to tf that even with a large number of recombinants it was not possible to determine whether it is proximal or distal to tf. Southern blot analysis of DNA from T-tf recombinants with a separation of tw12 and tf indicated that tw12 is proximal to tf. The mapping of two allelic t-lethals, t0 and t6 with respect to tw12 and tf has also been a problem.(ABSTRACT TRUNCATED AT 250 WORDS)

  6. On the formation of TW Crv optical radiation

    Science.gov (United States)

    Shimansky, V. V.; Mitrofanova, A. A.; Borisov, N. V.; Fabrika, S. N.; Galeev, A. I.

    2016-10-01

    We present the analysis of the optical radiation of the young pre-cataclysmic variable TW Crv. Spectroscopic and photometric observations were obtained at the SAO RAS 6-m BTA telescope and at the Russian-Turkish RTT-150 telescope. The light curves of the system posses nearly sinusoidal shapes with the amplitudes of Δ m > 0.m7, what is typical for young pre-cataclysmic variables with sdO-subdwarfs and orbit inclinations of less than 45◦. The optical spectrum contains dominant radiation of the hot subdwarf with the HI and He II absorption lines and strong emission lines, which are formed in the atmosphere of the secondary owing to the reflection effects. Radial velocities of the cool star were measured by analyzing the λλ 4630-4650 Å Bowen blend, which for the first time allowed to determine the component masses. A numerical simulation of the light curves and spectra of TW Crv, obtaining a complete set of systems fundamental parameters was carried out. The hot star parameters prompt its belonging to the sdOsubdwarf class at the stage of transition to the cooling white dwarf sequence. The absence of its observable planetary nebula is caused by a long-lasting evolution of the system after the common envelope state. The secondary component has a luminosity excess, which is typical for other young sdO-subdwarf precataclysmic variables. Its position on the " age-luminosity excess" diagram points at the accuracy of the obtained set of TW Crv fundamental parameters and at the similarity of its evolutionary and physical conditions with that of other BE UMa-type objects.

  7. A new grafting technique for tympanoplasty: tympanoplasty with a boomerang-shaped chondroperichondrial graft (TwBSCPG).

    Science.gov (United States)

    Dündar, Rıza; Soy, Fatih Kemal; Kulduk, Erkan; Muluk, Nuray Bayar; Cingi, Cemal

    2014-10-01

    The aim of this study was to introduce a new grafting technique in tympanoplasty that involves use of a boomerang-shaped chondroperichondrial graft (BSCPG). The anatomical and functional results were evaluated. A new tympanoplasty with boomerang-shaped chondroperichondrial graft (TwBSCPG) technique was used in 99 chronic otitis media patients with central or marginal perforation of the tympanic membrane and a normal middle ear mucosa. All 99 patients received chondroperichondrial cartilage grafts with a boomerang-shaped cartilage island left at the anterior and inferior parts. Postoperative follow-ups were conducted at months 1, 6, and 12. Preoperative and postoperative audiological examinations were performed and air-bone gaps were calculated according to the pure-tone averages (PTAs) of the patients. In the preoperative period, most (83.8%) air-bone gaps were ≥ 16 dB; after operating using the TwBSCPG technique, the air-bone gaps decreased to 0-10 dB in most patients (77.8%). In the TwBSCPG patients, the mean preoperative air-bone gap was 22.02 ± 6.74 dB SPL. Postoperatively, the mean postoperative air-bone gap was 8.70 ± 5.74 dB SPL. The TwBSCPG technique therefore decreased the postoperative air-bone gap compared to that preoperatively (p = 0.000, z = -8.645). At the 1-month follow-up, there were six graft perforations and one graft retraction. At the 6-month follow-up, there were nine graft perforations and three graft retractions. At 12 months, there were seven graft perforations and four graft retractions. During the first year after the boomerang tympanoplasty surgery, graft lateralization was not detected in any patient. Retractions were grade 1 according to the Sade classification and were localized to the postero-superior quadrant of the tympanic membrane. The TwBSCPG technique has benefits with respect to postoperative anatomical and audiological results. It prevents perforation of the tympanic membrane at the anterior quadrant and avoids graft

  8. TW-01, a piperazinedione-derived compound, inhibits Ras-mediated cell proliferation and angioplasty-induced vascular restenosis

    Energy Technology Data Exchange (ETDEWEB)

    Lin, Chao-Feng [The Ph.D. Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan (China); Department of Medicine, MacKay Medical College, New Taipei City, Taiwan (China); Division of Cardiology, Department of Internal Medicine, MacKay Memorial Hospital, Taipei, Taiwan (China); Division of Cardiology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan (China); Huang, Han-Li [The Ph.D. Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan (China); Peng, Chieh-Yu [Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 404, Taiwan (China); School of Pharmacy, College of Pharmacy, China Medical University, Taichung 404, Taiwan (China); Lee, Yu-Ching [The Center of Translational Medicine, Taipei Medical University, Taipei, Taiwan (China); Ph.D. Program for Biotechnology in Medicine, Taipei Medical University, Taipei, Taiwan (China); Wang, Hui-Po [College of Pharmacy, Taipei Medical University, Taipei 11031, Taiwan (China); Teng, Che-Ming [College of Pharmacy, Taipei Medical University, Taipei 11031, Taiwan (China); Pharmacological Institute, College of Medicine, National Taiwan University, Taipei 100, Taiwan (China); Pan, Shiow-Lin, E-mail: slpan@tmu.edu.tw [The Ph.D. Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan (China); Department of Pharmacology, College of Medicine, Taipei Medical University, Taipei 10031, Taiwan (China)

    2016-08-15

    Purpose: Vascular smooth muscle cell (VSMC) proliferation plays a critical role in the pathogenesis of atherosclerosis and restenosis. This study investigated piperazinedione derived compound TW-01-mediated inhibitory effects on VSMC proliferation and intimal hyperplasia. Methods: Cell proliferation was determined using [{sup 3}H]-thymidine incorporation and MTT assay; cell cycle distribution was measured using flow cytometry; proteins and mRNA expression were determined using western blotting and RT-PCR analyses; DNA binding activity of nuclear factor-κB (NF-κB), as measured using enzyme-linked immunosorbent assays (ELISA); in vivo effects of TW-01 were determined using balloon angioplasty in the rat. Results: TW-01 significantly inhibited cell proliferation. At the concentrations used, no cytotoxic effects were observed. Three predominant signaling pathways were inhibited by TW-01: (a) extracellular signal-regulated kinase (ERK)1/2 mitogen-activated protein kinase (MAPK) activation and its downstream effectors of c-fos, c-jun, and c-myc; (b) DNA binding activity of nuclear factor-κB (NF-κB); and, (c) Akt/protein kinase B (PKB) and cell cycle progression. Furthermore, TW-01 also inhibited Ras activation, a shared upstream event of each of these signaling cascades. In vascular injury studies, oral administration of TW-01 significantly suppressed intimal hyperplasia induced by balloon angioplasty. Conclusion: The present study suggests that TW-01 might be a potential candidate for atherosclerosis treatment. - Highlights: • TW-01significantly inhibits vascular smooth muscle cell proliferation. • TW-01 inhibits ERK, Akt and Ras pathway and DNA binding activity of NF-κB. • TW-01 significantly suppresses intimal hyperplasia induced by balloon angioplasty. • TW-01 might be a potential candidate for atherosclerosis treatment.

  9. TW-01, a piperazinedione-derived compound, inhibits Ras-mediated cell proliferation and angioplasty-induced vascular restenosis

    International Nuclear Information System (INIS)

    Lin, Chao-Feng; Huang, Han-Li; Peng, Chieh-Yu; Lee, Yu-Ching; Wang, Hui-Po; Teng, Che-Ming; Pan, Shiow-Lin

    2016-01-01

    Purpose: Vascular smooth muscle cell (VSMC) proliferation plays a critical role in the pathogenesis of atherosclerosis and restenosis. This study investigated piperazinedione derived compound TW-01-mediated inhibitory effects on VSMC proliferation and intimal hyperplasia. Methods: Cell proliferation was determined using [ 3 H]-thymidine incorporation and MTT assay; cell cycle distribution was measured using flow cytometry; proteins and mRNA expression were determined using western blotting and RT-PCR analyses; DNA binding activity of nuclear factor-κB (NF-κB), as measured using enzyme-linked immunosorbent assays (ELISA); in vivo effects of TW-01 were determined using balloon angioplasty in the rat. Results: TW-01 significantly inhibited cell proliferation. At the concentrations used, no cytotoxic effects were observed. Three predominant signaling pathways were inhibited by TW-01: (a) extracellular signal-regulated kinase (ERK)1/2 mitogen-activated protein kinase (MAPK) activation and its downstream effectors of c-fos, c-jun, and c-myc; (b) DNA binding activity of nuclear factor-κB (NF-κB); and, (c) Akt/protein kinase B (PKB) and cell cycle progression. Furthermore, TW-01 also inhibited Ras activation, a shared upstream event of each of these signaling cascades. In vascular injury studies, oral administration of TW-01 significantly suppressed intimal hyperplasia induced by balloon angioplasty. Conclusion: The present study suggests that TW-01 might be a potential candidate for atherosclerosis treatment. - Highlights: • TW-01significantly inhibits vascular smooth muscle cell proliferation. • TW-01 inhibits ERK, Akt and Ras pathway and DNA binding activity of NF-κB. • TW-01 significantly suppresses intimal hyperplasia induced by balloon angioplasty. • TW-01 might be a potential candidate for atherosclerosis treatment.

  10. Teaching Web 2.0 technologies using Web 2.0 technologies.

    Science.gov (United States)

    Rethlefsen, Melissa L; Piorun, Mary; Prince, J Dale

    2009-10-01

    The research evaluated participant satisfaction with the content and format of the "Web 2.0 101: Introduction to Second Generation Web Tools" course and measured the impact of the course on participants' self-evaluated knowledge of Web 2.0 tools. The "Web 2.0 101" online course was based loosely on the Learning 2.0 model. Content was provided through a course blog and covered a wide range of Web 2.0 tools. All Medical Library Association members were invited to participate. Participants were asked to complete a post-course survey. Respondents who completed the entire course or who completed part of the course self-evaluated their knowledge of nine social software tools and concepts prior to and after the course using a Likert scale. Additional qualitative information about course strengths and weaknesses was also gathered. Respondents' self-ratings showed a significant change in perceived knowledge for each tool, using a matched pair Wilcoxon signed rank analysis (P<0.0001 for each tool/concept). Overall satisfaction with the course appeared high. Hands-on exercises were the most frequently identified strength of the course; the length and time-consuming nature of the course were considered weaknesses by some. Learning 2.0-style courses, though demanding time and self-motivation from participants, can increase knowledge of Web 2.0 tools.

  11. Laser fusion experiments at 2 TW. [Argus system; implosion of D-T filled glass microspheres

    Energy Technology Data Exchange (ETDEWEB)

    Storm, E.K.; Ahlstrom, H.G.; Boyle, M.J.

    1976-10-01

    The Lawrence Livermore Laboratory Solid State Laser System, Arqus, has successfully performed laser implosion experiments at power levels exceeding 2 TW. D-T filled glass microspheres have been imploded to yield thermonuclear reaction products in excess of 5 x 10/sup 8/ per event. Neutron and ..cap alpha.. time-of-flight measurements indicate that D-T ion temperatures of approximately 5-6 keV and a density confinement time product (n tau) of approximately 1 x 10/sup 12/ were obtained in these experiments. Typically two 40J, 40 psec pulses of 1.06 ..mu..m light were focused on targets using 20 cm aperture f/1 lenses, producing intensities at the target in excess of 10/sup 16/ W/cm/sup 2/. An extensive array of diagnostics routinely monitored the laser performance and the laser target interaction process. Measurements of absorption and asymmetry in both the scattered light distribution and the ion blow off is evidence for non-classical absorption mechanisms and density scale heights of the order of 2 ..mu..m or less. The symmetry of the thermonuclear burn region is investigated by monitoring the ..cap alpha..-particle flux in several directions, and an experiment to image the thermonuclear burn region is in process. These experiments significantly extend our data base and our understanding of laser induced thermonuclear implosions and the basic laser plasma interaction physics from the 0.4 to 0.7 TW level of previous experiments.

  12. Turkey BILSAT-1: a Case Study for the Surrey Know-How Transfer and Training Program

    Science.gov (United States)

    Ghafoor, Nadeem; Murat Leloglu, Ugur; Sweeting, Martin, , Sir

    2002-01-01

    Surrey has established itself over the past 18 years as a world leader in providing hands-on spacecraft engineering training through its Small Satellite Engineering Know-How Transfer and Training (`KHTT') programme. This 18- month course runs alongside the construction of a microsatellite executed through SSTL, and strikes a balance between classroom-based teaching and total immersion within professional engineering teams. Hands-on training is provided covering the entire satellite engineering process, from mission and subsystem design, through module manufacture, assembly and integration, to qualification and flight model environmental tests, launch and commissioning. SSTL's experience in providing the KHTT programme has resulted in a well-defined course structure that yet retains the ability to accommodate individual customer requirements. The programme also takes full advantage of SSTL's intrinsic link with the Surrey Space Centre (`SSC') at the University of Surrey, offering a range of MSc and PhD research programmes pursuing common research interests of both SSTL and the customer, and in many cases complementing the development of either the customer's satellite or their future plans for an evolved space capability. Throughout 2002, three KHTT programmes have run in parallel at SSTL. A team of 11 engineers from the Centre Nationale des Techniques Spatiales in Algeria have now reached completion of their programme with Alsat-1, the first enhanced microsatellite of the Disaster Monitoring Constellation (`DMC'). In December 2001, 15 engineers from the Federal Ministry of Science and Technology in Nigeria arrived at SSTL and are now midway through their programme with Nigeriasat-1, the second enhanced microsatellite of the DMC. Thirdly, arriving slightly earlier in August 2001, a team from Tubitak-Bilten in Turkey commenced their KHTT programme with BILSAT-1, a high-capability enhanced microsatellite also contributing to the DMC, and are due to continue through

  13. MeInfoText 2.0: gene methylation and cancer relation extraction from biomedical literature

    Directory of Open Access Journals (Sweden)

    Fang Yu-Ching

    2011-12-01

    Full Text Available Abstract Background DNA methylation is regarded as a potential biomarker in the diagnosis and treatment of cancer. The relations between aberrant gene methylation and cancer development have been identified by a number of recent scientific studies. In a previous work, we used co-occurrences to mine those associations and compiled the MeInfoText 1.0 database. To reduce the amount of manual curation and improve the accuracy of relation extraction, we have now developed MeInfoText 2.0, which uses a machine learning-based approach to extract gene methylation-cancer relations. Description Two maximum entropy models are trained to predict if aberrant gene methylation is related to any type of cancer mentioned in the literature. After evaluation based on 10-fold cross-validation, the average precision/recall rates of the two models are 94.7/90.1 and 91.8/90% respectively. MeInfoText 2.0 provides the gene methylation profiles of different types of human cancer. The extracted relations with maximum probability, evidence sentences, and specific gene information are also retrievable. The database is available at http://bws.iis.sinica.edu.tw:8081/MeInfoText2/. Conclusion The previous version, MeInfoText, was developed by using association rules, whereas MeInfoText 2.0 is based on a new framework that combines machine learning, dictionary lookup and pattern matching for epigenetics information extraction. The results of experiments show that MeInfoText 2.0 outperforms existing tools in many respects. To the best of our knowledge, this is the first study that uses a hybrid approach to extract gene methylation-cancer relations. It is also the first attempt to develop a gene methylation and cancer relation corpus.

  14. X-RAY DETERMINATION OF THE VARIABLE RATE OF MASS ACCRETION ONTO TW HYDRAE

    Energy Technology Data Exchange (ETDEWEB)

    Brickhouse, N. S.; Cranmer, S. R.; Dupree, A. K.; Guenther, H. M.; Wolk, S. J. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Luna, G. J. M. [Current address: Instituto de Astronomia y Fisica del Espacio (IAFE), Buenos Aires (Argentina)

    2012-12-01

    Diagnostics of electron temperature (T{sub e} ), electron density (n{sub e} ), and hydrogen column density (N{sub H}) from the Chandra High Energy Transmission Grating spectrum of He-like Ne IX in TW Hydrae (TW Hya), in conjunction with a classical accretion model, allow us to infer the accretion rate onto the star directly from measurements of the accreting material. The new method introduces the use of the absorption of Ne IX lines as a measure of the column density of the intervening, accreting material. On average, the derived mass accretion rate for TW Hya is 1.5 Multiplication-Sign 10{sup -9} M{sub Sun} yr{sup -1}, for a stellar magnetic field strength of 600 G and a filling factor of 3.5%. Three individual Chandra exposures show statistically significant differences in the Ne IX line ratios, indicating changes in N{sub H}, T{sub e} , and n{sub e} by factors of 0.28, 1.6, and 1.3, respectively. In exposures separated by 2.7 days, the observations reported here suggest a five-fold reduction in the accretion rate. This powerful new technique promises to substantially improve our understanding of the accretion process in young stars.

  15. A 10-year review of the dose history of radiation workers in the University of Surrey

    International Nuclear Information System (INIS)

    Parami, V.K.

    1991-09-01

    This thesis presents data on internally and externally received doses for radiation workers whose records are kept at the Safety Office of the University of Surrey for the period 1981-1990. The distribution of doses by range is presented and analysed. The patterns of the collective equivalent dose (CED) and the average individual equivalent dose (IED) over the 10-year period are presented. The annual CED is very low, so that even the total for the 10-year period is less than 1 man-Sv. Likewise, the annual average IED is extremely low, well below the average annual dose to the U.K. population from overall sources of ionising radiation. Some relevant aspects of the 1990 ICRP Recommendations are examined and the impact of these to the 'practices' and sources of ionising radiation in the University is given consideration. The results of the 10-year review provide more evidence of over designation of radiation workers in the University. A recommendation is made to reduce the number of workers who are routinely monitored and justification and options are presented. This study is viewed as a useful database which could be of particular importance in the procedure of optimisation of radiation protection in the University of Surrey and U.K. establishments for higher education as a whole. (author)

  16. Kemi 2.0

    DEFF Research Database (Denmark)

    Johannesson, Anne Boie

    2014-01-01

    temaer, hvor eleverne laver deres eget didaktiske design indenfor rammerne af lærerens didaktiske design. Fokus i gruppearbejdet er udarbejdelse af web 2.0-produkter og meningsforhandling. Lærerens rolle er at hjælpe når der er behov for det, fremfor at lave almindelig tavleundervisning. Kemi 2.0 ligger......I dette projekt undersøges det hvordan kemi C på stx kan gøres it-baseret og almendannende. Løsningen er elevaktiverende og temabaseret undervisning samt fokus på kompetencer, fremfor kun på kvalifikationer. Det didaktiske design af kemi 2.0 er baseret på socialkonstruktivismen og inspireret af...... Dewey, Kolb, Illeris, Wenger og Luhmann. De unge karakteriseres med udgangspunkt i forskellige generationsbeskrivelser, og principper for didaktik 2.0, der imødekommer de unges forventninger og måder at lære på, skitseres. Principperne i kemi 2.0 er længerevarende gruppearbejde indenfor vedkommende...

  17. Fra web 2.0 til læringsspil 2.0

    DEFF Research Database (Denmark)

    Duus Henriksen, Thomas

    2010-01-01

    Artiklen sætter fokus på, hvordan man kan omsætte web 2.0-teknologien til læringsspil for derigennem at skabe en brugerbaseret, deltagerdreven tilgang til at arbejde med læringsspil. Artiklen beretter om, hvordan organisationsudviklingsspillet 6Styles omsættes, først til en skoleudviklingssammenh......Artiklen sætter fokus på, hvordan man kan omsætte web 2.0-teknologien til læringsspil for derigennem at skabe en brugerbaseret, deltagerdreven tilgang til at arbejde med læringsspil. Artiklen beretter om, hvordan organisationsudviklingsspillet 6Styles omsættes, først til en...... skoleudviklingssammenhæng og dernæst til et såkaldt 2.0-læringsspil, hvor deltagerne skaber læringsspillets indhold, mens de spiller spillet. Erfaringer fra brug af læringsspillet peger på, at 1) 2.0 læringsspil tager markant mere tid at anvende, 2) deltagerne udvikler en produktiv forståelse for den underliggende teori...

  18. Health 2.0 and Medicine 2.0: Tensions and Controversies in the Field

    OpenAIRE

    Hughes, Benjamin; Joshi, Indra; Wareham, Jonathan

    2008-01-01

    Background The term Web 2.0 became popular following the O?Reilly Media Web 2.0 conference in 2004; however, there are difficulties in its application to health and medicine. Principally, the?definition published by O?Reilly is criticized for being too amorphous, where other authors claim that Web 2.0 does not really exist. Despite this skepticism, the online community using Web 2.0 tools for health continues to grow, and the term Medicine 2.0 has entered popular nomenclature. Objective This ...

  19. Using Web 2.0 Technologies for Collaborative Learning in Distance Education—Case Studies from an  Australian University

    Directory of Open Access Journals (Sweden)

    David Lloyd

    2012-03-01

    Full Text Available This paper explores the use of Web 2.0 technologies for collaborative learning in a higher education context. A review of the literature exploring the strengths and weaknesses of Web 2.0 technology is presented, and a conceptual model of a Web 2.0 community of inquiry is introduced. Two Australian case studies are described, with an ex-poste evaluation of the use of Web 2.0 tools. Conclusions are drawn as to the potential for the use of Web 2.0 tools for collaborative e-learning in higher education. In particular, design and integration of Web 2.0 tools should be closely related to curriculum intent and pedagogical requirements, care must be taken to provide clear guidance on both expected student activity and learning expectations, and there is a clear need to develop, support and encourage strong interaction both between teachers and students, and amongst the students themselves.

  20. Toxic Substances Control Act Test Submissions 2.0 (TSCATS 2.0)

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Toxic Substances Control Act Test Submissions 2.0 (TSCATS 2.0) tracks the submissions of health and safety data submitted to the EPA either as required or...

  1. Volumetric Two-photon Imaging of Neurons Using Stereoscopy (vTwINS)

    Science.gov (United States)

    Song, Alexander; Charles, Adam S.; Koay, Sue Ann; Gauthier, Jeff L.; Thiberge, Stephan Y.; Pillow, Jonathan W.; Tank, David W.

    2017-01-01

    Two-photon laser scanning microscopy of calcium dynamics using fluorescent indicators is a widely used imaging method for large scale recording of neural activity in vivo. Here we introduce volumetric Two-photon Imaging of Neurons using Stereoscopy (vTwINS), a volumetric calcium imaging method that employs an elongated, V-shaped point spread function to image a 3D brain volume. Single neurons project to spatially displaced “image pairs” in the resulting 2D image, and the separation distance between images is proportional to depth in the volume. To demix the fluorescence time series of individual neurons, we introduce a novel orthogonal matching pursuit algorithm that also infers source locations within the 3D volume. We illustrate vTwINS by imaging neural population activity in mouse primary visual cortex and hippocampus. Our results demonstrate that vTwINS provides an effective method for volumetric two-photon calcium imaging that increases the number of neurons recorded while maintaining a high frame-rate. PMID:28319111

  2. From Web 2.0 to Learning Games 2.0

    DEFF Research Database (Denmark)

    Duus Henriksen, Thomas

    2011-01-01

    Learning games often fail in taking into account the extensive knowledge adult learners often have on the subject taught. This paper reports from a reconfiguration of a current learning game on leadership styles called LEADER, which on basis of ideas from web 2.0, is reconfigured to include...... the current and practical understandings brought by its participants. By inviting the participants into a semi-design process, the participants are asked to construct the game-content they would otherwise be playing. Results indicate that apart from being more time-consuming, LEADER 2.0 offers an effective...

  3. Gamma-radiation Mutagenesis in Genetically Unstable Barley Mutants. Pt. 1. Chlorophyll Mutations in Allelic tw Mutants and Their Revertants

    International Nuclear Information System (INIS)

    Vaitkuniene, V.

    1995-01-01

    Genotypical environment is an essential factor determining the mutability of mutants of the same type. Decreased chlorophyll mutant frequency was a common characteristic of all tested tw type (tw, tw 1 , tw 2 ) mutants induced in barley c. 'Auksiniai II'. The mutability of all the tested revertants was close to that of the initial c. 'Auksiniai II'. (author). 9 refs., 2 tabs

  4. Revised photometric elements of the eclipsing binary TW Dra

    International Nuclear Information System (INIS)

    Giuricin, G.; Mardirossian, F.; Predolin, F.

    1980-01-01

    The photoelectric light curves of TW Dra obtained by Baglow (1952) and by Waltser (1978) have been re-analysed by means of Wood's (1972) model in order to obtain accurate photometric elements. Significantly different elements have resulted from the two sets of observations, but more confidence can be given to the elements deduced from Walter's (1978) data. Radii and luminosities have been computed with the aid of Popper's (1978) new values for masses. TW Dra is confirmed to be a typical sd-system, having a distrinctly oversized and overluminous secondary. Interestingly, the primary appears to be slightly more luminous than expected for a Main-Sequences star, in agreement with theoretical predictions for present primaries of mass-exchange binaries systems. (orig.)

  5. Strong tW Scattering at the LHC

    CERN Document Server

    Dror, Jeff Asaf; Salvioni, Ennio; Serra, Javi

    2016-01-01

    Deviations of the top electroweak couplings from their Standard Model values imply that certain amplitudes for the scattering of third generation fermions and longitudinally polarized vector bosons or Higgses diverge quadratically with momenta. This high-energy growth is a genuine signal of models where the top quark is strongly coupled to the sector responsible for electroweak symmetry breaking. We propose to profit from the high energies accessible at the LHC to enhance the sensitivity to non-standard top-$Z$ couplings, which are currently very weakly constrained. To demonstrate the effectiveness of the approach, we perform a detailed analysis of $tW \\to tW$ scattering, which can be probed at the LHC via $pp\\to t\\bar{t}Wj$. By recasting a CMS analysis at 8 TeV, we derive the strongest direct bounds to date on the $Ztt$ couplings. We also design a dedicated search at 13 TeV that exploits the distinctive features of the $t\\bar{t}Wj$ signal. Finally, we present other scattering processes in the same class that...

  6. Delta 2.0

    DEFF Research Database (Denmark)

    Skott, Jeppe; Skott, Charlotte Krog; Jess, Kristine

    DELTA 2.0 er en ny og helt opdateret udgave af Delta, der i ti år været brugt i matematiklærernes grund-, efter- og videreuddannelse. DELTA 2.0 er seriens almene fagdidaktik. Der er også fagdidaktiske overvejelser i de øvrige bøger i serien, men de er knyttet til specifikt matematisk indhold. DELTA...... 2.0 behandler mere generelle matematikdidaktiske problemstillinger såsom læringsteoretiske overvejelser i forbindelse med matematik, centrale aspekter af det at undervise i matematik og digitale teknologier som værktøj til at støtte elevers faglige læring af matematik....

  7. Hydrophysical Evaluation of Wells TW-B, TW-7, UE-6d, U-2gg PSE 3A, U-10L 1, and UE-6e in Yucca Flat

    Energy Technology Data Exchange (ETDEWEB)

    Pohlmann, Karl [Desert Research Inst. (DRI), Las Vegas, NV (United States); Healey, John [Desert Research Inst. (DRI), Las Vegas, NV (United States); Lyles, Bred [Desert Research Inst. (DRI), Reno, NV (United States); Cooper, Clay [Desert Research Inst. (DRI), Reno, NV (United States); Hershey, Ronald L. [Desert Research Inst. (DRI), Reno, NV (United States)

    2017-05-01

    This study evaluated six wells in Yucca Flat in support of the Underground Test Area (UGTA) Activity conducted by the U.S. Department of Energy (DOE) at the Nevada National Security Site (NNSS). Accessibility and groundwater sampling conditions were assessed and if conditions permitted, samples were collected for tritium analysis. Four of the wells, TW-B, UE-6d, UE-6e, and TW-7 were sampled in support of UGTA responses to recommendations made by the Yucca Flat/Climax Mine External Peer Review Committee (Navarro, 2016). In addition to its role in support of these responses, TW-7 was included because it is listed in the NNSS Integrated Groundwater Sampling Plan (DOE, 2014) as a required sampling location, although it had not been sampled since 1994. U-2gg PSE 3A and U-10L 1 were evaluated to determine whether deteriorating well conditions can be addressed so that these wells can be used as additional sampling points in Yucca Flat.

  8. Comparison of SW and TW non-synchronous accelerating cavities as used in electron beam storage rings

    International Nuclear Information System (INIS)

    Zolfaghari, A.; Demos, P.T.; Flanz, J.B.; Jacobs, K.

    1991-01-01

    The authors relate the parameters of detuned standing wave (SW) and non-synchronous beam travelling wave (TW) accelerating cavities of equivalent equilibrium performance when used to compensate for radiation and parasitic energy losses by electrons circulating in a high energy electron storage ring. The relationship is expressed in terms of the coupling parameter β and cavity tuning angle ψ of the TW accelerator's equivalent SW system. A given TW cavity corresponds to a standing wave system possessing specific settings of β and ψ. This is shown for the constant impedance TW waveguide, for which β and ψ can be expressed as explicit functions of TW cavity length 1, attenuation factor I, RF electric field phase velocity V p , and shunt impedance r. Coupling parameter β depends additionally on SW cavity shunt impedance R. The basis they have used for formulating the equivalence of the two systems follows Travelling Wave Cavity Non-Synchronous Beam Loading theory developed by G.A. Loew and Standing Wave Circuit Analysis theory as described by P.B. Wilson

  9. Effects of lunar phase on sleep in men and women in Surrey.

    Science.gov (United States)

    Della Monica, Ciro; Atzori, Giuseppe; Dijk, Derk-Jan

    2015-12-01

    Recently, evidence has emerged that the phases of the moon may modulate subjective sleep quality and polysomnographically assessed sleep structure in humans. We aimed to explore further the putative effects of circa-lunar periodicity (~29.5 days) on subjective and objective parameters of human sleep in a retrospective analysis. The baseline sleep recordings of 205 (91 males and 114 females; mean age = 47.47 years, standard deviation =19.01; range: 20-84 years) healthy and carefully screened participants who participated in two clinical trials in the Surrey Clinical Research Centre were included in the analyses. Sleep was recorded in windowless sleep laboratories. For each study night, we calculated the distance, in days, to the date of the closest full moon phase and based on this distance, classified sleep records in three lunar classes. Univariate analysis of variance with factors lunar class, age and sex was applied to each of 21 sleep parameters. No significant main effect for the factor lunar class was observed for any of the objective sleep parameters and subjective sleep quality but some significant interactions were observed. The interaction between lunar class and sex was significant for total sleep time, Stage 4 sleep and rapid eye movement (REM) sleep. Separate analyses for men and women indicated that in women total sleep time, Stage 4 sleep and REM sleep were reduced when sleep occurred close to full moon, whereas in men REM duration increased around full moon. These data provide limited evidence for an effect of lunar phase on human sleep. © 2015 European Sleep Research Society.

  10. Web 2.0 and health 2.0: are you in?

    Science.gov (United States)

    Felkey, Bill G

    2008-01-01

    With over 6 billion web pages, over $100 billion in online sales every year in the U.S. alone and the average growth rate of online purchasing exceeding 26% over the last 5 years, the Internet is a powerful business tool. Today's shopper sees your actual pharmacy location and your Internet presence as one and the same. One study showed that 82% of the consumers surveyed who had a single frustrating experience online with a retailer would not return to the site for future dealings. A bad experience online made 28% of those surveyed unlikely to return to the retail location of the business, and over 55% said a bad online experience would have a negative impact on their overall opinion of the retailer. Web 2.0 refers to the social networking applications of the internet, Health 2.0 to its special health applications. Taking your Internet presence to the 2.0 level must be balanced with all of the other demands you are facing-but be aware that it's happening all around you.

  11. Deep Imaging Search for Planets Forming in the TW Hya Protoplanetary Disk with the Keck/NIRC2 Vortex Coronagraph

    Science.gov (United States)

    Ruane, G.; Mawet, D.; Kastner, J.; Meshkat, T.; Bottom, M.; Femenía Castellá, B.; Absil, O.; Gomez Gonzalez, C.; Huby, E.; Zhu, Z.; Jenson-Clem, R.; Choquet, É.; Serabyn, E.

    2017-08-01

    Distinct gap features in the nearest protoplanetary disk, TW Hya (distance of 59.5 ± 0.9 pc), may be signposts of ongoing planet formation. We performed long-exposure thermal infrared coronagraphic imaging observations to search for accreting planets, especially within dust gaps previously detected in scattered light and submillimeter-wave thermal emission. Three nights of observations with the Keck/NIRC2 vortex coronagraph in L‧ (3.4-4.1 μm) did not reveal any statistically significant point sources. We thereby set strict upper limits on the masses of non-accreting planets. In the four most prominent disk gaps at 24, 41, 47, and 88 au, we obtain upper mass limits of 1.6-2.3, 1.1-1.6, 1.1-1.5, and 1.0-1.2 Jupiter masses (M J), assuming an age range of 7-10 Myr for TW Hya. These limits correspond to the contrast at 95% completeness (true positive fraction of 0.95) with a 1% chance of a false positive within 1″ of the star. We also approximate an upper limit on the product of the planet mass and planetary accretion rate of {M}{{p}}\\dot{M}≲ {10}-8 {M}{{J}}2 {{yr}}-1 implying that any putative ˜0.1 M J planet, which could be responsible for opening the 24 au gap, is presently accreting at rates insufficient to build up a Jupiter mass within TW Hya’s pre-main-sequence lifetime.

  12. Web 2.0 i undervisningen

    DEFF Research Database (Denmark)

    Liburd, Janne J.; Christensen, Inger-Marie F.

    2011-01-01

    Temahæfte om web 2.0, der formidler viden om og inspiration til at arbejde med web 2.0 teknologier i videregående uddannelser. Hæftet introducerer sociale medier og web 2.0, og der redegøres for teoretisk funderede læreprocesser med web 2.0, og hvorledes disse kan indtænkes i undervisningsforløb....... Hæftet præsenterer endvidere en metode til design af læringsaktiviteter med web 2.0, og giver en række eksempler på konkrete forløb....

  13. Augmented Reality 2.0

    Science.gov (United States)

    Schmalstieg, Dieter; Langlotz, Tobias; Billinghurst, Mark

    Augmented Reality (AR) was first demonstrated in the 1960s, but only recently have technologies emerged that can be used to easily deploy AR applications to many users. Camera-equipped cell phones with significant processing power and graphics abilities provide an inexpensive and versatile platform for AR applications, while the social networking technology of Web 2.0 provides a large-scale infrastructure for collaboratively producing and distributing geo-referenced AR content. This combination of widely used mobile hardware and Web 2.0 software allows the development of a new type of AR platform that can be used on a global scale. In this paper we describe the Augmented Reality 2.0 concept and present existing work on mobile AR and web technologies that could be used to create AR 2.0 applications.

  14. Photoionization models for the wind from TW Vir

    Science.gov (United States)

    Kallman, T.

    1985-01-01

    Line profiles are examined for the resonance doublets of the ions C IV, Si IV, and N V in the spectrum of the dwarf nova TW Virginis as observed by Cordova and Mason (1982). Line strengths depend on the abundances of the scattering ions and hence on the physical characteristics in the stellar wind. Results of the study show that the observed UV line ratios from TW Vir cannot be produced by photoionization by either an unattenuated single bremsstrahlung or by a single blackbody spectrum. Satisfactory values of the abundance ratios can be produced by bremsstrahlung spectra extending into the X-ray region which have low-energy cutoffs near the N IV threshold energy at 77 eV and have fluxes corresponding to an ionization parameter xi-sub-br of about 10. A finding that the flux in the soft X-ray bremsstrahlung component must exceed the EUV blackbody flux by at least an order of magnitude has implications for theories of the continuum emission from cataclysmic variables.

  15. MeV single-ion beam irradiation of mammalian cells using the Surrey vertical nanobeam, compared with broad proton beam and X-ray irradiations

    Energy Technology Data Exchange (ETDEWEB)

    Prakrajang, K. [Plasma and Beam Physics Research Facility, Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200 (Thailand); Faculty of Science, Maejo University, Chiang Mai 50290 (Thailand); Jeynes, J.C.G.; Merchant, M.J.; Kirkby, K.; Kirkby, N. [Surrey Ion Beam Center, Faculty of Engineering and Physical Science, University of Surrey, Guildford Surrey, GU2 7XH (United Kingdom); Thopan, P. [Plasma and Beam Physics Research Facility, Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200 (Thailand); Yu, L.D., E-mail: yuld@fnrf.science.cmu.ac.th [Plasma and Beam Physics Research Facility, Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200 (Thailand); Thailand Center of Excellence in Physics, Commission on Higher Education, 328 Si Ayutthaya Road, Bangkok 10400 (Thailand)

    2013-07-15

    Highlights: •Recently completed nanobeam at the Surrey Ion Beam Centre was used. •3.8-MeV single and broad proton beams irradiated Chinese hamster cells. •Cell survival curves were measured and compared with 300-kV X-ray irradiation. •Single ion irradiation had a lower survival part at ultra-low dose. •It implies hypersensitivity, bystander effect and cell cycle phase of cell death. -- Abstract: As a part of a systematic study on mechanisms involved in physical cancer therapies, this work investigated response of mammalian cells to ultra-low-dose ion beam irradiation. The ion beam irradiation was performed using the recently completed nanobeam facility at the Surrey Ion Beam Centre. A scanning focused vertical ion nano-beam was applied to irradiate Chinese hamster V79 cells. The V79 cells were irradiated in two different beam modes, namely, focused single ion beam and defocused scanning broad ion beam of 3.8-MeV protons. The single ion beam was capable of irradiating a single cell with a precisely controlled number of the ions to extremely low doses. After irradiation and cell incubation, the number of surviving colonies as a function of the number of the irradiating ions was measured for the cell survival fraction curve. A lower survival for the single ion beam irradiation than that of the broad beam case implied the hypersensitivity and bystander effect. The ion-beam-induced cell survival curves were compared with that from 300-kV X-ray irradiation. Theoretical studies indicated that the cell death in single ion irradiation mainly occurred in the cell cycle phases of cell division and intervals between the cell division and the DNA replication. The success in the experiment demonstrated the Surrey vertical nanobeam successfully completed.

  16. Metronomic Small Molecule Inhibitor of Bcl-2 (TW-37) Is Antiangiogenic and Potentiates the Antitumor Effect of Ionizing Radiation

    International Nuclear Information System (INIS)

    Zeitlin, Benjamin D.; Spalding, Aaron C.; Campos, Marcia S.; Ashimori, Naoki; Dong Zhihong; Wang Shaomeng; Lawrence, Theodore S.; Noer, Jacques E.

    2010-01-01

    Purpose: To investigate the effect of a metronomic (low-dose, high-frequency) small-molecule inhibitor of Bcl-2 (TW-37) in combination with radiotherapy on microvascular endothelial cells in vitro and in tumor angiogenesis in vivo. Methods and Materials: Primary human dermal microvascular endothelial cells were exposed to ionizing radiation and/or TW-37 and colony formation, as well as capillary sprouting in three-dimensional collagen matrices, was evaluated. Xenografts vascularized with human blood vessels were engineered by cotransplantation of human squamous cell carcinoma cells (OSCC3) and human dermal microvascular endothelial cells seeded in highly porous biodegradable scaffolds into the subcutaneous space of immunodeficient mice. Mice were treated with metronomic TW-37 and/or radiation, and tumor growth was evaluated. Results: Low-dose TW-37 sensitized primary endothelial cells to radiation-induced inhibition of colony formation. Low-dose TW-37 or radiation partially inhibited endothelial cell sprout formation, and in combination, these therapies abrogated new sprouting. Combination of metronomic TW-37 and low-dose radiation inhibited tumor growth and resulted in significant increase in time to failure compared with controls, whereas single agents did not. Notably, histopathologic analysis revealed that tumors treated with TW-37 (with or without radiation) are more differentiated and showed more cohesive invasive fronts, which is consistent with less aggressive phenotype. Conclusions: These results demonstrate that metronomic TW-37 potentiates the antitumor effects of radiotherapy and suggest that patients with head and neck cancer might benefit from the combination of small molecule inhibitor of Bcl-2 and radiation therapy.

  17. Mivoq Evalita 2016 PosTwITA tagger

    OpenAIRE

    Paci, Giulio

    2017-01-01

    The POS tagger developed by Mivoq to tag tweets according to PosTwITA task guidelines as defined at Evalita 2016 is presented. The system obtained third position with 92.7% of accuracy. Si presenta il POS tagger sviluppato da Mivoq per etichettare i tweet secondo le linee guida del task PosT-wITA, cos come definite per Evalita 2016. Il sistema ha ottenuto la terza posizione con un accuratezza del 92.7%.

  18. CRPropa 2.0

    Directory of Open Access Journals (Sweden)

    Nierstenhoefer Nils

    2013-06-01

    Full Text Available Recently CRPropa 2.0 has been released as a public software package to simulate the extragalactic propagation of ultra-high energy nuclei. It includes deflections by extragalactic magnetic fields and all relevant interactions with ambient photon backgrounds. Furthermore it provides the possibility to track secondary γ-rays and neutrinos produced in the different reactions. This allows for the investigation of their connection with the primary nuclei, the so called multi-messenger approach. In this paper CRPropa 2.0 is introduced, its different components are discussed and two example applications are presented.

  19. SOAP 2.0: Spot Oscillation And Planet 2.0

    Science.gov (United States)

    Dumusque, Xavier; Boisse, I.; Santos, N. C.

    2015-04-01

    SOAP (Spot Oscillation And Planet) 2.0 simulates the effects of dark spots and bright plages on the surface of a rotating star, computing their expected radial velocity and photometric signatures. It includes the convective blueshift and its inhibition in active regions.

  20. From web 2.0 to learning games 2.0

    DEFF Research Database (Denmark)

    Duus Henriksen, Thomas

    2011-01-01

    Learning games often fail in taking into account the extensive knowledge adult learners often have on the subject taught. This paper reports from a reconfiguration of a current learning game on leadership styles called LEADER, which on basis of ideas from web 2.0, is reconfigured to include...

  1. Overview of the independent ASTEC V2.0 validation by SARNET partners

    International Nuclear Information System (INIS)

    Chatelard, Patrick; Arndt, Siegfried; Atanasova, Boryana; Bandini, Giacomino; Bleyer, Alexandre; Brähler, Thimo; Buck, Michael; Kljenak, Ivo; Kujal, Bohumir

    2014-01-01

    Significant efforts are put into the assessment of the severe accident integral code ASTEC, jointly developed since several years by IRSN and GRS, either through comparison with results of the most important international experiments or through benchmarks with other severe accident simulation codes on plant applications. These efforts are done in first priority by the code developers’ organisations, IRSN and GRS, and also by numerous partners, in particular in the frame of the SARNET European network. The first version of the new series ASTEC V2 had been released in July 2009 to SARNET partners. Two subsequent V2.0 code revisions, including several modelling improvements, have been then released to the same partners, respectively in 2010 and 2011. This paper summarises first the approach of ASTEC validation vs. experiments, along with a description of the validation matrix, and presents then a few examples of applications of the ASTEC V2.0-rev1 version carried out in 2011 by the SARNET users. These calculation examples are selected in a way to cover diverse aspects of severe accident phenomenology, i.e. to cover both in-vessel and ex-vessel processes, in order to provide a good picture of the current ASTEC V2 capabilities. Finally, the main lessons drawn from this joint validation task are summarised, along with an evaluation of the current physical modelling relevance and thus an identification of the ASTEC V2.0 validity domain

  2. [Gastroenterology 2.0: useful resources for the gastroenterologist available on the Web 2.0].

    Science.gov (United States)

    Curioso, Walter H; Proaño, Alvaro; Ruiz, Eloy F

    2011-01-01

    The term Web 2.0 refers to the use of Internet applications which enable the users to share, participate and collaborate together on information. The objective of this study is to check different applications that use Web 2.0, which could help the gastroenterologist in his daily practice. The applications that will be checked include: blogs, microblogging, RSS, podcasts, wikis and social networks. "Gastroenterology 2.0" represents the applications, services, and tools based on Web 2.0, which are of easy use and easily accessible - to consumers, patients, gastroenterologists and other health professionals, as well as researchers. Although several studies have shown the benefits these technologies have on the medical practice, it is necessary to conduct further studies to demonstrate the use of these applications on improving health.

  3. The University of Surrey database of elemental composition of human hair

    International Nuclear Information System (INIS)

    Altaf, W.J.; Akanle, O.A.; Admans, L.L.; Beasley, D.; Butler, C.; Spyrou, N.M.

    2004-01-01

    The elemental composition of human hair obtained from different studies at Surrey University over a period of 25 years has been recorded and forms part of a database, for biological and environmental samples, which is being developed. Instrumental neutron activation analysis (IAA), using reactor neutrons, was the principal method employed and from which reported data are presented. Elemental concentrations of Br, Ca, Ce, Cl, Co, Cr, Cs, F, Fe, Hf, K, Mg, Mn, Na, Rb, Sb, Sc, Se, V and Zn were obtained and recorded in the database. Chronological variations in two sets of subjects separated by a period of time of 16 years are also given. Variations in the concentration values of some elements related to the state of health and disease were reported for hair samples collected from subjects suffering from manic depression, senile dementia and breast cancer. Concentration values of some elements with relation to the nationality of subjects from Bulgaria, England, Kenya, Nigeria and Wales are presented and compared. This study is part of on-going research in the analysis of biomedical and bioenvironmental materials. The database is still in its infancy. (author)

  4. 2.5 TW, two-cycle IR laser pulses via frequency domain optical parametric amplification.

    Science.gov (United States)

    Gruson, V; Ernotte, G; Lassonde, P; Laramée, A; Bionta, M R; Chaker, M; Di Mauro, L; Corkum, P B; Ibrahim, H; Schmidt, B E; Legaré, F

    2017-10-30

    Broadband optical parametric amplification in the IR region has reached a new milestone through the use of a non-collinear Frequency domain Optical Parametric Amplification system. We report a laser source delivering 11.6 fs pulses with 30 mJ of energy at a central wavelength of 1.8 μm at 10 Hz repetition rate corresponding to a peak power of 2.5 TW. The peak power scaling is accompanied by a pulse shortening of about 20% upon amplification due to the spectral reshaping with higher gain in the spectral wings. This source paves the way for high flux soft X-ray pulses and IR-driven laser wakefield acceleration.

  5. E-Learning 3.0 = E-Learning 2.0 + Web 3.0?

    Science.gov (United States)

    Hussain, Fehmida

    2012-01-01

    Web 3.0, termed as the semantic web or the web of data is the transformed version of Web 2.0 with technologies and functionalities such as intelligent collaborative filtering, cloud computing, big data, linked data, openness, interoperability and smart mobility. If Web 2.0 is about social networking and mass collaboration between the creator and…

  6. SITEX 2.0: Projections of protein functional sites on eukaryotic genes. Extension with orthologous genes.

    Science.gov (United States)

    Medvedeva, Irina V; Demenkov, Pavel S; Ivanisenko, Vladimir A

    2017-04-01

    Functional sites define the diversity of protein functions and are the central object of research of the structural and functional organization of proteins. The mechanisms underlying protein functional sites emergence and their variability during evolution are distinguished by duplication, shuffling, insertion and deletion of the exons in genes. The study of the correlation between a site structure and exon structure serves as the basis for the in-depth understanding of sites organization. In this regard, the development of programming resources that allow the realization of the mutual projection of exon structure of genes and primary and tertiary structures of encoded proteins is still the actual problem. Previously, we developed the SitEx system that provides information about protein and gene sequences with mapped exon borders and protein functional sites amino acid positions. The database included information on proteins with known 3D structure. However, data with respect to orthologs was not available. Therefore, we added the projection of sites positions to the exon structures of orthologs in SitEx 2.0. We implemented a search through database using site conservation variability and site discontinuity through exon structure. Inclusion of the information on orthologs allowed to expand the possibilities of SitEx usage for solving problems regarding the analysis of the structural and functional organization of proteins. Database URL: http://www-bionet.sscc.ru/sitex/ .

  7. District of Surrey automated energy mangement project report

    Energy Technology Data Exchange (ETDEWEB)

    1984-01-01

    In November 1981, the Municipality of Surrey was given a contract; under the Canada/British Columbia conservation and renewable energy demonstration agreement, to install a computerized building energy management system (BMS) at a central location with which to monitor and control the energy use in separate and different civic facilities via telephone lines (wireless links would have been feasible). The demonstration had three objectives: to establish the feasibility of centralized control via telephone lines, to collect energy performance data and thus, to determine the effectiveness of a BMS, and to reduce the energy costs to the municipal government. A Johnson Control JC/85/10 energy management computer was connected to seven separate buildings via telephone lines. The buildings represent 5 building types: 2 libraries, 3 swimming pools, 1 municipal office buildiing, 1 court house, and 1 low enforcement building. It took almost 6 months for the BMS to be fully installed in the facilities and an additional 6 months to fix it. An independent consultant was hired to evaluate the performance of the system in each building and thus, to determine its cost-effectiveness. Two periods of energy use were compared in the evaluation: May 1981 to April 1982 was the base year and September 1982 to August 1983 the demonstration year. The BMS was installed for a total cpital cost af about $123,000 and produced a first year energy cost savings of $38,600, yielding an average simple payback of 3.2 years. It was concluded that the demonstration was successful, and it is recommended that the federal governmnent provide further support to BMS demonstrations. 8 tabs.

  8. MENERAPKAN KONSEP PERPUSTAKAAN 2.0

    Directory of Open Access Journals (Sweden)

    Blasius Sudarsono

    2012-07-01

    Full Text Available The Library 2.0 terminology was coined in 2005 by Michael E Casey in his blog entitled Library Crunch. This article discusses the implementation of Library 2.0 concept, as a continuation of the previous article by the same author which had introduced the concept. Basically, Library 2.0 is an application of Web 2.0 for library purposes. It based on two fundament¬als that are: the strength of participation and the sophisticated of information technology. For library, theses forces based on three basic transformations i.e.: from book centered to human centered, from users oriented to users centered, and from information management to knowledge management. To discuss the implementation of the concept, the author did not start from the scratch, but looking other libraries that already had undertaken the effort. Examples are taken from USA, Australia, and China. Finally, the author discusses the possibility of Indonesian Librarians to implement the Library 2.0 concept. In addition the author also gives some suggestions.

  9. Die Bibliothek 2.0 ist tot – es lebe der Bibliothekar 2.0

    Directory of Open Access Journals (Sweden)

    David Tréfás

    2013-03-01

    Full Text Available Schweizer Bibliotheken bekunden Mühe mit ihren Auftritten im Internet. Insbesondere ihre Facebook-Seiten werden nur ungenügend genutzt. Dieser Artikel stellt die These in den Raum, wonach der Misserfolg der Bibliotheken vor allem darauf beruht, dass sie die Handlungsweisen ihrer Nutzer nicht der Umgebung des Web 2.0 anpassen. Erst wenn sich Bibliotheken als gleichberechtigte Mitglieder einer Community sehen, kann beispielsweise die Nutzung von Facebook wirklich gelingen.Swiss libraries have difficulties with their web presence. Especially their facebook pages are not being used sufficiently. This article suggests that the libraries’ failure is due to false expectations of user behaviour in a web 2.0 environment. Only if libraries regard themselves as equal members of a web community, can their web 2.0 presence and especially facebook presence unfold fully.

  10. Gry w podmiot. Szkic o (wczesnej twórczości Mladena Stilinovicia

    Directory of Open Access Journals (Sweden)

    Magdalena Bogusławska

    2016-10-01

    Full Text Available Games of a subject: A sketch of the (early works of Mladen Stilinović The article concerns the conceptualization of the subject in the works of the contemporary Croatian visual artist Mladen Stilinović. The object of analysis are most of all works (collages, texts from the 1970s and early 1980s, when the artist formulated the basis for his creative philosophy and at the same time determined the directions of their research. His system of reference were the socialist state order and the traditionalist, academic system of artistic practice, which he criticized from the perspectives of Diogenes, philosophical Cynicism and constructive anarchism. Until this day, the attitude of resistance is the main creative principle for Stilinović’s art. He sets strong, conscious and autonomous creator’s “I” against symbolic violence of different systems (political, ideological, educational, etc.. This “I” is not so much the material and object of expression as a space of play based on concpetualism and self-irony.   Gry w podmiot. Szkic o (wczesnej twórczości Mladena Stilinovicia Artykuł dotyczy konceptualizacji podmiotu w twórczości współczesnego chorwackiego artysty wizualnego – Mladena Stilinovicia. Przedmiotem analizy są przede wszystkim prace (kolaże, teksty z lat 70. i początku 80. XX wieku, kiedy to artysta formułował podstawy filozofii twórczej i określał kierunki swych poszukiwań. Układem odniesienia były dla niego wówczas socjalistyczny porządek państwa i tradycjonalistyczny, akademicki system praktyki artystycz­nej, które poddawał konsekwentnej krytyce z pozycji rozumnego, diogenesowskiego cynizmu i konstruktywnego anarchizmu. Do dziś postawa oporu jest dla Stilinovicia podstawową zasadą twórczą. Przemocy symbolicznej wszelkich systemów (politycznych, ideologicznych, edukacyjnych itp. przeciwstawia mocne, świadome i niezależne „ja” twórcy. Jest tu ono nie tyle tworzywem i przedmiotem ekspresji

  11. Potential aquaculture probiont Lactococcus lactis TW34 produces nisin Z and inhibits the fish pathogen Lactococcus garvieae.

    Science.gov (United States)

    Sequeiros, Cynthia; Garcés, Marisa E; Vallejo, Marisol; Marguet, Emilio R; Olivera, Nelda L

    2015-04-01

    Bacteriocin-producing Lactococcus lactis TW34 was isolated from marine fish. TW34 bacteriocin inhibited the growth of the fish pathogen Lactococcus garvieae at 5 AU/ml (minimum inhibitory concentration), whereas the minimum bactericidal concentration was 10 AU/ml. Addition of TW34 bacteriocin to L. garvieae cultures resulted in a decrease of six orders of magnitude of viable cells counts demonstrating a bactericidal mode of action. The direct detection of the bacteriocin activity by Tricine-SDS-PAGE showed an active peptide with a molecular mass ca. 4.5 kDa. The analysis by MALDI-TOF-MS detected a strong signal at m/z 2,351.2 that corresponded to the nisin leader peptide mass without the initiating methionine, whose sequence STKDFNLDLVSVSKKDSGASPR was confirmed by MS/MS. Sequence analysis of nisin structural gene confirmed that L. lactis TW34 was a nisin Z producer. This nisin Z-producing strain with probiotic properties might be considered as an alternative in the prevention of lactococcosis, a global disease in aquaculture systems.

  12. Archives of the Dance (22): Pioneer Women – early British modern dancers (the National Resource Centre for Dance, University of Surrey).

    OpenAIRE

    Carter, Alexandra

    2010-01-01

    Pioneer Women was an AHRC-funded project based on archives held at the National Resource Centre for Dance, University of Surrey. Two of the largest collections, those on Madge Atkinson and Natural Movement, and Ruby Ginner’s Revived (later Classical) Greek Dance, are categorized and interrogated for not only what they reveal of the work of these two dance artists, but also for how they resonate with dominant cultural trends in the arts. The research privileges a much under-explored or theoriz...

  13. Anesthesia 2.0: internet-based information resources and Web 2.0 applications in anesthesia education.

    Science.gov (United States)

    Chu, Larry F; Young, Chelsea; Zamora, Abby; Kurup, Viji; Macario, Alex

    2010-04-01

    Informatics is a broad field encompassing artificial intelligence, cognitive science, computer science, information science, and social science. The goal of this review is to illustrate how Web 2.0 information technologies could be used to improve anesthesia education. Educators in all specialties of medicine are increasingly studying Web 2.0 technologies to maximize postgraduate medical education of housestaff. These technologies include microblogging, blogs, really simple syndication (RSS) feeds, podcasts, wikis, and social bookmarking and networking. 'Anesthesia 2.0' reflects our expectation that these technologies will foster innovation and interactivity in anesthesia-related web resources which embraces the principles of openness, sharing, and interconnectedness that represent the Web 2.0 movement. Although several recent studies have shown benefits of implementing these systems into medical education, much more investigation is needed. Although direct practice and observation in the operating room are essential, Web 2.0 technologies hold great promise to innovate anesthesia education and clinical practice such that the resident learner need not be in a classroom for a didactic talk, or even in the operating room to see how an arterial line is properly placed. Thoughtful research to maximize implementation of these technologies should be a priority for development by academic anesthesiology departments. Web 2.0 and advanced informatics resources will be part of physician lifelong learning and clinical practice.

  14. RASCAL Version 2.0 workbook

    International Nuclear Information System (INIS)

    Athey, G.F.; McKenna, T.J.

    1993-05-01

    The Radiological Assessment System for Consequence Analysis, Version 2.0 (RASCAL 2.0) has been developed for use by the NRC personnel who respond to radiological emergencies. This workbook is intended to complement the RASCAL 2.0 User's Guide (NUREG/CR-5247, Vol. 1). The workbook contains exercises designed to familiarize the user with the computer based tools of RASCAL through hands-on problem solving. The workbook is composed of four major sections. The first part is a RASCAL familiarization exercise to acquaint the user with the operation of the forms, menus, on-line help, and documentation. The latter three parts contain exercises in using the three tools of RASCAL Version 2.0: DECAY, FM-DOSE, and ST-DOSE. Each section of exercises is followed by discussion on how the tools could be used to solve the problem

  15. RF Design of the TW Buncher for the CLIC Drive Beam Injector (2nd report)

    CERN Document Server

    Shaker, Hamed

    2016-01-01

    CLIC is based on the two beams concept that one beam (drive beam) produces the required RF power to accelerate another beam (main beam). The drive beam is produced and accelerated up to 50MeV inside the CLIC drive beam injector. The drive beam injector main components are a thermionic electron gun, three sub-harmonic bunchers, a pre-buncher, a TW buncher, 13 accelerating structures and one magnetic chicane. This document is the second report of the RF structure design of the TW buncher. This design is based on the beam dynamic design done by Shahin Sanaye Hajari due to requirements mentioned in CLIC CDR. A disk-loaded tapered structure is chosen for the TW buncher. The axial electric field increases strongly based on the beam dynamic requirements. This second report includes the study of HOM effects, retuning the cells, study of dimensional tolerances and the heat dissipation on the surface.

  16. Using Web 2.0 for health promotion and social marketing efforts: lessons learned from Web 2.0 experts.

    Science.gov (United States)

    Dooley, Jennifer Allyson; Jones, Sandra C; Iverson, Don

    2014-01-01

    Web 2.0 experts working in social marketing participated in qualitative in-depth interviews. The research aimed to document the current state of Web 2.0 practice. Perceived strengths (such as the viral nature of Web 2.0) and weaknesses (such as the time consuming effort it took to learn new Web 2.0 platforms) existed when using Web 2.0 platforms for campaigns. Lessons learned were identified--namely, suggestions for engaging in specific types of content creation strategies (such as plain language and transparent communication practices). Findings present originality and value to practitioners working in social marketing who want to effectively use Web 2.0.

  17. Portal Web 2.0

    OpenAIRE

    Barba Hidalgo, José Manuel

    2008-01-01

    El tema que es tracta en aquest projecte gira al voltant del concepte Web 2.0. Després d’una introducció on es comenten les principals característiques que defineixen el conjunt d’aplicacions agrupades al voltant d’aquesta filosofia, s’analitzen diferents entorns de desenvolupament d’aplicacions Web, amb l’objectiu de crear un portal que segueixi els principis Web 2.0. El resultat de l’estudi presenta a Ruby on Rails com un ferm candidat, això fa que es procedeixi a estudiar aq...

  18. H eat transfer betw een tw o surfaces usually in- creases w h en th e ...

    Indian Academy of Sciences (India)

    Srimath

    H eat transfer betw een tw o surfaces usually in- creases w h en th e tem p eratu re d i® eren ce b etw een the tw o surfaces increases. H ere w e highlight an unusual situation in radiation heat transfer w herein the heat transfer decreases w hen the tem perature di®erence increases. In tro d u ctio n. In 1701,N ew ton ...

  19. 2.0'erne - den sociale uddannelsespraksis

    DEFF Research Database (Denmark)

    Buhl, Mie

    2010-01-01

    .0, Didaktik 2.0 og e-Læring på web 2.0 viser alle hen til en pågående proces, hvor det handler om at finde frem til pædagogikker og didaktikker, der kan matche teknologiens potentialer. Web 2.0 er ikke alene det, der udspiller sig ved at aktivere et interface. Interfacet er omgivet af digitale artefakter, der...

  20. Place Attachment in a Sustainable Neighbourhood: Comparison of Two Cases in Surrey, B.C

    Directory of Open Access Journals (Sweden)

    Karim W.F. Youssef

    2015-10-01

    Full Text Available Scholars have voiced the emphasis of studies in sustainability on environmental sustainability over social sustainability. One of the dimensions of social sustainability is neighbourhood cohesion among residents of a neighbourhood. This paper compares the social sustainability of two neighbourhoods in Vancouver metropolitan area particularly in the city of Surrey, B.C. with respect to the sense of neighbourhood cohesion among their residents. Buckner’s (1988 instrument for measuring neighbourhood cohesion index is used with the addition of a few questions to probe for a new conception of space that may link the degree of accessibility and permeability of a neighbourhood (or degree of gated-ness with the level of neighbourhood cohesion. Results of qualitative and quantitative analysis show that the neighbourhood having an enclosure model had a higher level of neighbourhood cohesion than the neighbourhood with an encounter model on both the affective and interactive dimensions of neighbourhood cohesion.

  1. Long pulse microsphere experiments at 3 TW

    International Nuclear Information System (INIS)

    Boyle, M.J.; Attwood, D.T.; Brooks, K.M.

    1977-01-01

    Previous 1.06 μm laser implosion experiments have explored the parameter space associated with microsphere targets of typically less than 100 psec. Exploding pusher experiments have now been performed using long pulses (100 to 200 psec FWHM), and large diameter (100 to 150 μm) targets on the 3 TW Argus laser facility. Absorption, transport, implosion and neutron and α yield characteristics are discussed and compared with earlier short pulse results. The observed neutron yields are discussed in light of the temporal mismatch between the absorption and implosion time scales imposed by the large diameter, long pulse conditions

  2. Emerging Technologies: Web 2.0.

    Science.gov (United States)

    Holt, Claire

    2011-03-01

    Web 2.0 has brought a change to how we communicate and disseminate information with the use of Twitter, Facebook, YouTube, instant messaging and blogging. This technology is beginning to be used in the health field for public awareness campaigns, emergency health alerts, medical education and remote healthcare services. Australian Health Information Managers will be called upon to reconcile their organisations' policies and procedures regarding the use of Web 2.0 technologies within the existing legal framework of privacy, confidentiality and consent. This article explores various applications of Web 2.0, their benefits and some of their potential legal and ethical implications when implemented in Australia.

  3. Enterocin TW21, a novel bacteriocin from dochi-isolated Enterococcus faecium D081821.

    Science.gov (United States)

    Chang, S-Y; Chen, Y-S; Pan, S-F; Lee, Y-S; Chang, C-H; Chang, C-H; Yu, B; Wu, H-C

    2013-09-01

    Purification and characterization of a novel bacteriocin produced by strain Enterococcus faecium D081821. Enterococcus faecium D081821, isolated from the traditional Taiwanese fermented food dochi (fermented black beans), was previously found to produce a bacteriocin against Listeria monocytogenes and some Gram-positive bacteria. This bacteriocin, termed enterocin TW21, was purified from culture supernatant by ammonium sulfate precipitation, Sep-Pak C18 cartridge, ion-exchange and gel filtration chromatography. Mass spectrometry analysis showed the mass of the peptide to be approximately 5300·6 Da. The N-terminal amino acid sequencing yielded a partial sequence NH2 -ATYYGNGVYxNTQK by Edman degradation, and it contains the consensus class IIa bacteriocin motif YGNGV in the N-terminal region. The open reading frame (ORF) encoding the bacteriocin was identified from the draft genome sequence of Enterococcus faecium D081821, and sequence analysis of this peptide indicated that enterocin TW21 is a novel bacteriocin. Enterococcus faecium D081821 produced a bacteriocin named enterocin TW21, the molecular weight and amino acid sequence both revealed it to be a novel bacteriocin. A new member of class IIa bacteriocin was identified. This bacteriocin shows great inhibitory ability against L. monocytogenes and could be applied as a natural food preservative. © 2013 The Society for Applied Microbiology.

  4. Using Web 2.0 to Collaborate

    Science.gov (United States)

    Buechler, Scott

    2010-01-01

    Web 2.0 is not only for kids anymore, businesses are using it, too. Businesses are adopting Web 2.0 technology for a variety of purposes. In this article, the author discusses how he incorporates Web 2.0 into his business communications course. He describes a project that has both individual and collaborative elements and requires extensive…

  5. Teaching PBL with Web 2.0

    DEFF Research Database (Denmark)

    Dohn, Nina Bonderup; Buus, Lillian

    2013-01-01

    Web 2.0-mediated learning activities are associated with a number of potentials for learning. Among these potentials are pedagogical advantages connected with bottom-up user-generation of content; opportunities for organizing flexible learning; and possibilities of supporting the development...... of competences necessary for participating in contemporary society. In this article we report on a study of three cases where web 2.0 activities have been introduced into PBL settings. Our focus is the unexpected challenges teachers may face due to inherent tensions between the practice logic of the educational...... system and that of web 2.0-practices. The study documents the development of viable ways of making use of web 2.0-mediated activities in support of a PBL approach and thus provides existence proof that web 2.0 activities may contribute constructively and productively to learning within a PBL perspective...

  6. A Typology for Web 2.0

    DEFF Research Database (Denmark)

    Dalsgaard, Christian; Sorensen, Elsebeth Korsgaard

    2008-01-01

    of a learning environment: 1) organizing communicative processes and 2) organizing resources. Organizing communicative processes is supported by Web 2.0’s ability to provide a range of communicative tools that can be organized flexibly by students. Web 2.0 provides opportunities for communities and groups...... to organize their own communicative processes. Further, Web 2.0 supports organization of resources by empowering students to create, construct, manage and share content themselves. However, the main potential lies within collaborative creation and sharing in networks. Potentially, networking tools......Web 2.0 is a term used to describe recent developments on the World Wide Web. The term is often used to describe the increased use of the web for user-generated content, collaboration, and social networking. However, Web 2.0 is a weakly defined concept, and it is unclear exactly what kind...

  7. Public health and Web 2.0.

    Science.gov (United States)

    Hardey, Michael

    2008-07-01

    This article examines the nature and role of Web 2.0 resources and their impact on health information made available though the Internet. The transition of the Web from version one to Web 2.0 is described and the main features of the new Web examined. Two characteristic Web 2.0 resources are explored and the implications for the public and practitioners examined. First, what are known as 'user reviews' or 'user testimonials', which allow people to comment on the health services delivered to them, are described. Second, new mapping applications that take advantage of the interactive potential of Web 2.0 and provide tools to visualize complex data are examined. Following a discussion of the potential of Web 2.0, it is concluded that it offers considerable opportunities for disseminating health information and creating new sources of data, as well as generating new questions and dilemmas.

  8. A Typology for Web 2.0

    DEFF Research Database (Denmark)

    Dalsgaard, Christian; Sorensen, Elsebeth Korsgaard

    2008-01-01

    Web 2.0 is a term used to describe recent developments on the World Wide Web. The term is often used to describe the increased use of the web for user-generated content, collaboration, and social networking. However, Web 2.0 is a weakly defined concept, and it is unclear exactly what kind...... of technologies it covers. The objective of the paper is to develop a typology that can be used to categorize Web 2.0 technologies. Further, the paper will discuss which of these technologies are unique to Web 2.0. Often, Web 2.0 is described by way of different kinds of software; for instance, blogs, wikis......, podcasts, RSS, and social networking sites. The problem with this type of description is that it fails to distinguish between different types or categories of technologies. As an alternative, the typology developed in the paper distinguishes between technologies on basis of, how - and in which contexts...

  9. Web 2.0 and Critical Information Literacy

    Science.gov (United States)

    Dunaway, Michelle

    2011-01-01

    The impact of Web 2.0 upon culture, education, and knowledge is obfuscated by the pervasiveness of Web 2.0 applications and technologies. Web 2.0 is commonly conceptualized in terms of the tools that it makes possible, such as Facebook, Twitter, and Wikipedia. In the context of information literacy instruction, Web 2.0 is frequently conceptualized…

  10. Web 2.0: A Strategy Guide

    CERN Document Server

    Shuen, Amy

    2008-01-01

    Web 2.0 makes headlines, but how does it make money? This concise guide explains what's different about Web 2.0 and how those differences can improve the bottom line. Whether you're an executive, a small business owner, or an entrepreneur, Web 2.0: A Strategy Guide illustrates through real life examples how various businesses are creating new opportunities on today's Web. This book is about strategy rather than the technology itself.

  11. Marketing 2.0

    Science.gov (United States)

    Germain, Carol Anne

    2008-01-01

    There is no doubt that today's student is much more savvy with using computers than the students of years gone by. This tech generation eagerly embraces the Internet, online searching, and the newer Web 2.0 technologies. This latter platform provides users with the ability to interact in a large virtual world, share/take (upload/download)…

  12. 2016-2017 Travel Expense Report for Monte Solberg, Ex-Governor

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

    Beata Bialic

    Purpose: Board meetings. Date(s):. 2016-06-20 to 2016-06-22. Destination(s):. Ottawa. Airfare: $1,209.63. Other. Transportation: $158.36. Accommodation: $590.10. Meals and. Incidentals: $38.42. Other: $0.00. Total: $1,996.51. Comments: 2016-2017 Travel Expense Report for. Monte Solberg, Ex-Governor.

  13. Re-Designing Open Data 2.0

    Directory of Open Access Journals (Sweden)

    Alon Peled

    2013-12-01

    Full Text Available Since 2009, eighty-one countries subscribed to President Obama’s Open Government program including its dominant Open Data (OD component. Do Open Data 2.0 plans address the problems detected during the first generation of this program (2010-2012? If not, how can these plans be improved? The article is a review of the main lines of criticism of the original OD program based on lessons learned worldwide. OD1.0 suffered from bad design, flawed execution, and adverse consequences. Open Data 2.0 plans fail to address the critical flaws of the first Open Data program. The analysis of OD1.0 reveals two primary lessons for converting OD2.0 into a more focused and effective openness program: OD2.0 architects must consider agencies’ data release strategies, and avoid creating a transparency “policy bubble”. Numerous countries followed the path of the original American Open Data program; therefore, the future of this program will have an impact on bureaucracies worldwide.

  14. A SIGNIFICANTLY LOW CO ABUNDANCE TOWARD THE TW Hya PROTOPLANETARY DISK: A PATH TO ACTIVE CARBON CHEMISTRY?

    International Nuclear Information System (INIS)

    Favre, Cécile; Cleeves, L. Ilsedore; Bergin, Edwin A.; Qi, Chunhua; Blake, Geoffrey A.

    2013-01-01

    In this Letter we report the CO abundance relative to H 2 derived toward the circumstellar disk of the T-Tauri star TW Hya from the HD (1 – 0) and C 18 O (2 – 1) emission lines. The HD (1 – 0) line was observed by the Herschel Space Observatory Photodetector Array Camera and Spectrometer whereas C 18 O (2 – 1) observations were carried out with the Submillimeter Array at a spatial resolution of 2.''8 × 1.''9 (corresponding to ∼151 × 103 AU). In the disk's warm molecular layer (T > 20 K) we measure a disk-averaged gas-phase CO abundance relative to H 2 of χ(CO) = (0.1-3) × 10 –5 , substantially lower than the canonical value of χ(CO) = 10 –4 . We infer that the best explanation of this low χ(CO) is the chemical destruction of CO followed by rapid formation of carbon chains, or perhaps CO 2 , that can subsequently freeze-out, resulting in the bulk mass of carbon locked up in ice grain mantles and oxygen in water. As a consequence of this likely time-dependent carbon sink mechanism, CO may be an unreliable tracer of H 2 gas mass

  15. E-Learning 2.0: Learning Redefined

    OpenAIRE

    Kumar, Rupesh

    2009-01-01

    The conventional e-learning approach emphasizes a learning system more than a learning environment. While traditional e-learning systems continue to be significant, there is a new set of services emerging, embracing the philosophy of Web 2.0. Known as e-learning 2.0, it aims to create a personalized learning environment. E-learning 2.0 combines the use of discrete but complementary tools and web services to support the creation of ad-hoc learning communities. This paper discusses the influenc...

  16. Latitude SSTmax = 0 SSTmax = 10 SSTmax = 20

    Indian Academy of Sciences (India)

    . −10. −5. 0. 5. 10. V (m/s). −30. −20. −10. 0. 10. 20. 30. −10. −5. 0. 5. 10. Latitude. V (m/s). V Non−linear model. Non−linear advection term. Pressure gradient term. SSTmax = 0. SSTmax = 10. SSTmax = 20.

  17. NSDI 2.0: siamo pronti?

    OpenAIRE

    Renzo Carlucci

    2010-01-01

    NSDI 2.0: are we ready?“Powering our National Economy, Renewing our Infrastructure, Protecting our Environment” is the concept behind the design of the american NSDI 2.0: this will lead to the start of a second generation of Spatial Data Infrastructures that will bring economical benefits to all the traditional infrastructures such as distribution, communication, utilities and and energy networks. The article provides an analysis on the italian context as well.

  18. Ciencia 2.0

    OpenAIRE

    Lafuente, Antonio

    2006-01-01

    El fraude en ciencia viene siendo un motivo de creciente preocupación entre los editores y políticos de la ciencia. Y, entre las muchas alternativas que se proponen, se hace necesario explorar las nuevas posibilidades que ofrecen las llamadas tecnologías de la web 2.0 y las prácticas utilizadas en el movimiento open source.

  19. The 2.0 Attitude: Politics beyond Blogs

    Directory of Open Access Journals (Sweden)

    Roc Fages Ramió

    2008-09-01

    Full Text Available

    La Actitud 2.0 es el elemento clave para aprovechar las posibilidades que el trabajo y la relación en red proporciona a empresas, organizaciones y administraciones. Si una persona es 2.0 quiere decir que utiliza las herramientas de la Web 2.0 para generar red y obtener beneficios personales o profesionales, individuales y colectivos, a partir de compartir conocimiento.

    Este artículo empieza definiendo la Web 2.0 para demostrar que sin una actitud hacia este fenómeno el concepto no puede llegar a ningún sitio. A partir de esta conceptualización, el documento desarrolla la aplicación de la Actitud 2.0 a nivel de la política. Aquello que se conoce como Política 2.0, dice el texto, está aplicándose más desde el punto de vista de la ciudadanía que de los mismos políticos. Por lo tanto, la Política 2.0 crea una nueva forma de hacer política por parte de los ciudadanos. Eso quiere decir que éstos intentan generar una red de la que los políticos muchas veces no forman parte, incluso aunque se hayan integrado en el ámbito 2.0. El problema, pues, es que muchos políticos supuestamente 2.0 sólo utilizan las herramientas -blogs, Facebook, YouTube, Twitter...- sin entrar a fondo en las capacidades de la red. Porque, de hecho, la Política 2.0 les permitiría poder conocer, compartir y escuchar más directamente las necesidades y los intereses de la misma ciudadanía.

    Llegados a este punto, y después de repasar algunas iniciativas interesantes de Política 2.0, el artículo acaba destacando la importancia de la nueva generación de nativos digitales, de personas que han nacido con el fenómeno 2.0 integrado, la generación de la Nintendo. Este grupo de jóvenes son los que tienen que marcar las tendencias que en un futuro muy inmediato serán realidades: trabajo y relación en red elevados al máximo exponente. Por lo tanto, les tiene que quedar claro a los políticos que, hoy por hoy, la Política 2.0 se

  20. An investigation into the move towards electronic journals: a case study of NHS libraries in Kent, Surrey and Sussex.

    Science.gov (United States)

    England, Rebecca

    2013-09-01

    Electronic journals are so embedded into practice in academic libraries that it is easy to forget that this is not the case everywhere. In NHS libraries, for example, the staff face a particular set of issues. This article is based on Rebecca England's dissertation on this topic, completed as part of the MSc Econ course in Information and Library studies at Aberystwyth University. Rebecca is E-resources Librarian at the Maidstone and Tunbridge Wells NHS Trust. She investigated the momentum towards electronic journals in NHS libraries in the Kent, Surrey and Sussex region and the potential for a regional purchasing consortium. © 2013 The author. Health Information and Libraries Journal © 2013 Health Libraries Group.

  1. Er Web 2.0 klar til mainstream?

    DEFF Research Database (Denmark)

    Ivang, Reimer

    2009-01-01

    BLOG: Spørgsmålene der relateres til Web 2.0 er mange. Men en af de mest signifikante er om netop din virksomhed skal anvende Web 2.0 teknologier? Hvad kan I få ud af det?......BLOG: Spørgsmålene der relateres til Web 2.0 er mange. Men en af de mest signifikante er om netop din virksomhed skal anvende Web 2.0 teknologier? Hvad kan I få ud af det?...

  2. Trust, Voice, and Library 2.0

    Science.gov (United States)

    Watkins, Candice

    2009-01-01

    Web 2.0 is a constant and growing theme in the library field. This article describes a social networking site based on a Web 2.0 infused course management system (CMS) developed by Clatsop Community College in Astoria, Oregon.

  3. Web 2.0: Where does Europe stand?

    OpenAIRE

    LINDMARK Sven

    2009-01-01

    This report provides a techno-economic analysis of Web 2.0 and an assessment of Europe's position in Web 2.0 applications. Firstly, it introduces the phenomenon of Web 2.0 and its main characteristics: technologies, applications, and user roles. It then provides an overview of its adoption, value chain and business models, before moving to an analysis of its drivers, industrial impact and disruptive potential. Finally, the report assesses the position of the European Web 2.0 applications indu...

  4. Ecodesign Directive version 2.0

    DEFF Research Database (Denmark)

    This present report reports on the main findings of the project Ecodesign Directive version 2.0 - from Energy Efficiency to Resource Efficiency. The project is financed by the Danish Environmental Protection Agency and ran from December 2012 to June 2014.......This present report reports on the main findings of the project Ecodesign Directive version 2.0 - from Energy Efficiency to Resource Efficiency. The project is financed by the Danish Environmental Protection Agency and ran from December 2012 to June 2014....

  5. Oh! Web 2.0, Virtual Reference Service 2.0, Tools and Techniques (I): A Basic Approach

    Science.gov (United States)

    Arya, Harsh Bardhan; Mishra, J. K.

    2011-01-01

    This study targets librarians and information professionals who use Web 2.0 tools and applications with a view to providing snapshots on how Web 2.0 technologies are used. It also aims to identify values and impact that such tools have exerted on libraries and their services, as well as to detect various issues associated with the implementation…

  6. Got Web 2.0? A Review of Web 2.0 Tools for the Information Systems Curriculum

    Science.gov (United States)

    Sendall, Patricia; Ceccucci, Wendy; Peslak, Alan R.

    2010-01-01

    This paper discusses the importance of incorporating Web 2.0 technologies across the Information Systems (IS) curriculum. The Web 2.0 paradigm is not new; although the term itself was coined in 2004 by Dale Dougherty of O'Reilly Media, Inc., (Anderson, 2007) the concept of a collaborative workspace was the original vision of Tim Berners-Lee, the…

  7. Using web 2.0 for health information

    CERN Document Server

    Younger, Paula

    2011-01-01

    Since it was first formally described in 2004, what is known as Web 2.0 has affected every library and information sector. Web 2.0 has tremendous potential to transform health information delivery. This book offers a cohesive overview of how Web 2.0 is changing health and medical information work.

  8. Oh! Web 2.0, Virtual Reference Service 2.0, Tools & Techniques (II)

    Science.gov (United States)

    Arya, Harsh Bardhan; Mishra, J. K.

    2012-01-01

    The paper describes the theory and definition of the practice of librarianship, specifically addressing how Web 2.0 technologies (tools) such as synchronous messaging, collaborative reference service and streaming media, blogs, wikis, social networks, social bookmarking tools, tagging, RSS feeds, and mashups might intimate changes and how…

  9. Turbulence in the TW Hya Disk

    Science.gov (United States)

    Flaherty, Kevin M.; Hughes, A. Meredith; Teague, Richard; Simon, Jacob B.; Andrews, Sean M.; Wilner, David J.

    2018-04-01

    Turbulence is a fundamental parameter in models of grain growth during the early stages of planet formation. As such, observational constraints on its magnitude are crucial. Here we self-consistently analyze ALMA CO(2–1), SMA CO(3–2), and SMA CO(6–5) observations of the disk around TW Hya and find an upper limit on the turbulent broadening of equilibrium in the presence of a vertical temperature gradient and/or the confinement of CO to a thin molecular layer above the midplane, although further work is needed to quantify the influence of these prescriptions. Assumptions about hydrostatic equilibrium and the CO distribution are physically motivated, and may have a small influence on measuring the kinematics of the gas, but they become important when constraining small effects such as the strength of the turbulence within a protoplanetary disk.

  10. Medizinstudium 2.0 dank Web 2.0?! – Risiken und Chancen am Beispiel des Leipziger Medizinstudiums [Study of medicine 2.0 due to Web 2.0?! - Risks and opportunities for the curriculum in Leipzig

    Directory of Open Access Journals (Sweden)

    Heinke, Wolfgang

    2013-02-01

    Full Text Available [english] Web 2.0 is changing the study of medicine by opening up totally new ways of learning and teaching in an ongoing process. Global social networking services like Facebook, YouTube, Flickr, Google Drive and Xing already play an important part in communication both among students and between students and teaching staff. Moreover, local portals (such as the platform [] established in 2003 have also caught on and in some cases eclipsed the use of the well-known location-independent social media. The many possibilities and rapid changes brought about by social networks need to be publicized within medical faculties. Therefore, an E-learning and New Media Working Group was set up at the Faculty of Medicine of Universität Leipzig in order to harness the opportunities of Web 2.0, analyse the resulting processes of change in the study of medicine, and curb the risks of the Internet. With Web 2.0 and the social web already influencing the study of medicine, the opportunities of the Internet now need to be utilized to improve the teaching of medicine.[german] Das Web 2.0 ändert das Medizinstudium, weil es Studierenden und Lehrenden völlig neue Möglichkeiten im Lern- und Lehrverhalten und im Umgang miteinander bietet. Der Änderungsprozess hat bereits eingesetzt und wird sich in den kommenden Jahren weiter fortsetzen. Überregionale soziale Medien wie Facebook, YouTube, StudiVZ, Google Drive oder Xing sind heute fest integrierter Bestandteil in der Kommunikation zwischen den Studierenden und in der Kommunikation zwischen Studierenden und Lehrenden. Darüber hinaus haben aber auch lokale Portale, wie die seit 2003 etablierte Plattform [], mittlerweile einen festen Stellenwert im Medizinstudium erlangt, der zum Teil über den der bekannten überregionalen sozialen Netze hinausgeht. Die vielen Möglichkeiten und raschen Veränderungen durch soziale Netzwerke sollten innerhalb der Medizinischen Fakultäten bekannt gemacht werden. Aus diesem Grund

  11. RadCat 2.0 User Guide.

    Energy Technology Data Exchange (ETDEWEB)

    Osborn, Douglas.; Weiner, Ruth F.; Mills, George Scott; Hamp, Steve C.; O' Donnell, Brandon, M.; Orcutt, David J.; Heames, Terence J.; Hinojosa, Daniel

    2005-01-01

    This document provides a detailed discussion and a guide for the use of the RadCat 2.0 Graphical User Interface input file generator for the RADTRAN 5.5 code. The differences between RadCat 2.0 and RadCat 1.0 can be attributed to the differences between RADTRAN 5 and RADTRAN 5.5 as well as clarification for some of the input parameters. 3

  12. Manipulation by multiple filamentation of subpicosecond TW KrF laser beam

    Science.gov (United States)

    Zvorykin, V. D.; Smetanin, I. V.; Ustinovskii, N. N.; Shutov, A. V.

    2018-05-01

    A self-focusing of TW-level subpicosecond UV KrF laser pulses in ambient air produces a few 100 randomly distributed filaments over 100-m propagation distance. A control of multiple filamentation process by a number of methods was demonstrated in the present work envisaging applications for a HV discharge guiding, remote excitation of an atmospheric air laser, MW radiation transfer by virtual plasma waveguide, as well as filamentation suppression to improve short pulse parameters in direct amplification scheme. Under the laser beam focusing, a multitude of filaments coalesced into a superfilament with highly increased intensity and plasma conductivity. A superradiant forward lasing was obtained in the superfilament around 1.07-µm wavelength of atmospheric nitrogen. A regular 2D array of a 100 superfilaments was configured over 20-m distance by Fresnel diffraction on periodic amplitude masks. Effective Kerr defocusing and a subsequent filaments suppression over 50-m distance was demonstrated in Xe due to 2-photon resonance of laser radiation with 6p state being accompanied by a narrow-angle coherent conical emission at 828-nm wavelength.

  13. EcoMark 2.0

    DEFF Research Database (Denmark)

    Guo, Chenjuan; Yang, Bin; Andersen, Ove

    2015-01-01

    Eco-routing is a simple yet effective approach to substantially reducing the environmental impact, e.g., fuel consumption and greenhouse gas (GHG) emissions, of vehicular transportation. Eco-routing relies on the ability to reliably quantify the environmental impact of vehicles as they travel...... in a spatial network. The procedure of quantifying such vehicular impact for road segments of a spatial network is called eco-weight assignment. EcoMark 2.0 proposes a general framework for eco-weight assignment to enable eco-routing. It studies the abilities of six instantaneous and five aggregated models......, and experiments for assessing the utility of the impact models in assigning eco-weights. The application of EcoMark 2.0 indicates that the instantaneous model EMIT and the aggregated model SIDRA-Running are suitable for assigning eco-weights under varying circumstances. In contrast, other instantaneous models...

  14. KINEMATICS OF THE CO GAS IN THE INNER REGIONS OF THE TW Hya DISK

    Energy Technology Data Exchange (ETDEWEB)

    Rosenfeld, Katherine A.; Qi Chunhua; Andrews, Sean M.; Wilner, David J. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Corder, Stuartt A. [National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903 (United States); Dullemond, C. P. [Institut fuer Theoretische Astrophysik, Universitaet Heidelberg, Albert-Ueberle-Str. 2, D-69120 Heidelberg (Germany); Lin Shinyi [Department of Physics, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093 (United States); Hughes, A. M. [Department of Astronomy, University of California at Berkeley, 601 Campbell Hall, Berkeley, CA 94720 (United States); D' Alessio, Paola [Centro de Radioastronomia y Astrofisica, Universidad Nacional Autonoma de Mexico, Apartado Postal 72-3 (Xangari), 58089 Morelia, Michoacan (Mexico); Ho, P. T. P. [Academia Sinica Institute of Astronomy and Astrophysics, P.O. Box 23-141, Taipei 106, Taiwan (China)

    2012-10-01

    We present a detailed analysis of the spatially and spectrally resolved {sup 12}CO J = 2-1 and J = 3-2 emission lines from the TW Hya circumstellar disk, based on science verification data from the Atacama Large Millimeter/submillimeter Array (ALMA). These lines exhibit substantial emission in their high-velocity wings (with projected velocities out to 2.1 km s{sup -1}, corresponding to intrinsic orbital velocities >20 km s{sup -1}) that trace molecular gas as close as 2 AU from the central star. However, we are not able to reproduce the intensity of these wings and the general spatio-kinematic pattern of the lines with simple models for the disk structure and kinematics. Using three-dimensional non-local thermodynamic equilibrium molecular excitation and radiative transfer calculations, we construct some alternative models that successfully account for these features by modifying either (1) the temperature structure of the inner disk (inside the dust-depleted disk cavity; r < 4 AU), (2) the intrinsic (Keplerian) disk velocity field, or (3) the distribution of disk inclination angles (a warp). The latter approach is particularly compelling because a representative warped disk model qualitatively reproduces the observed azimuthal modulation of optical light scattered off the disk surface. In any model scenario, the ALMA data clearly require a substantial molecular gas reservoir located inside the region where dust optical depths are known to be substantially diminished in the TW Hya disk, in agreement with previous studies based on infrared spectroscopy. The results from these updated model prescriptions are discussed in terms of their potential physical origins, which might include dynamical perturbations from a low-mass companion with an orbital separation of a few AU.

  15. Archaeology 2.0? Review of Archaeology 2.0: New Approaches to Communication and Collaboration [Web Book

    Directory of Open Access Journals (Sweden)

    Michael Shanks

    2012-10-01

    Full Text Available The Cotsen Institute in Los Angeles has launched a new publishing initiative in 'Digital Archaeology'. Its first book, Archaeology 2.0: New Approaches to Communication and Collaboration, edited by Eric C. Kansa, Sarah Whitcher Kansa and Ethan Watrall, makes a grand claim, if only in its title, that archaeology has undergone, or is about to undergo, changes that bring about a completely new version or kind of archaeology. The analogy is with the World Wide Web. Just as the IT world embraced radical changes of software design and web delivery nearly ten years ago and announced that this was Web version 2.0, so too archaeology is changed, the authors claim, and enough to warrant the designation version 2.0. We disagree and argue that the claim is not well supported. Moreover, we hold that the book misunderstands the implications of Web 2.0 and its aftermath. The well-meaning authors do make a valuable contribution to debates about uses of information technology in archaeology, and particularly data management. But their perspective is hopelessly narrow, looking back to the circumscribed concerns of professional field archaeologists with their data, its dissemination, use and survival. The authors focus mainly upon their own projects, expressing little interest in the scope of contemporary archaeology, digitally enabled as it all is, through heritage and everything to do with the representation of the material past in the present, an interest surely begged by the overt reference to the global changes associated with the notion of Web 2.0.

  16. Web 2.0 in e-Learning

    Directory of Open Access Journals (Sweden)

    M. Tariq Banday

    2013-10-01

    Full Text Available Web 2.0 tools have created fresh opportunities for governments, education, businesses and individuals to enhance efficiency and improve effectiveness while executing respective professional duties. The key features of these tools include online character and access through a web browser, supportive for open content licenses, open sharing and social interaction, and often free to use or support free features. These have created novel prospects for teachers to combine face-to-face teaching and online materials via social media such as discussion forums, blogs and wikis. The web 2.0 educational design is based on socio-cultural learning theories such as interaction, joint creation of content, critical thinking, learning by doing and collaboration. This paper makes an appraisal of ICT adoption in education, emergence of Web, improvements in Web and its effect on the e-Learning. It explains gradual integration of ICT into education through various stages. The paper presents the content and communication dimensions of e-learning for its classification. It discusses various opportunities created by Web 2.0 tools in education for effective teacher-learner, learner-learner and teacher-teacher communication, interaction and collaboration. It presents various cases and projects involving use of some Web 2.0 tools for enhancing learning. Furthermore, it lists some challenges for successful implementation of e-learning through Web 2.0 tools and discusses some possible solutions for its control.

  17. USES 2.0, The Uniform System for the Evaluation of Substances, version 2.0 ; supplement to EUSES

    OpenAIRE

    Linders JBHJ; Jager DT (eds.); CSR; ECO

    1997-01-01

    This interim report describes the updated risk assessment system for agricultural and non-agricultural pesticides. It will be integrated with the European Union System for the Evaluation of Substances, EUSES 1.0, into USES 2.0, the second version of the Uniform System for the Evaluation of Substances. The report is primarily made as preparation to the programming and testing of USES 2.0.

  18. Ex vivo tracheomalacia model with 3D-printed external tracheal splint.

    Science.gov (United States)

    Kaye, Rachel; Goldstein, Todd; Aronowitz, Danielle; Grande, Daniel A; Zeltsman, David; Smith, Lee P

    2017-04-01

    To design and evaluate an ex vivo model of tracheomalacia with and without a three-dimensional (3D)-printed external tracheal splint. Prospective, ex vivo animal trial. Three groups of ex vivo porcine tracheas were used: 1) control (unmanipulated trachea), 2) tracheomalacia (tracheal rings partially incised and crushed), and 3) splinted tracheomalacia (external custom tracheal splint fitted onto group 2 trachea). Each end of an ex vivo trachea was sealed with a custom-designed and 3D-printed cap; a transducer was placed through one end to measure the pressure inside the trachea. Although the negative pressure was applied to the tracheal lumen, the tracheal wall collapse was measured externally and internally using a bronchoscope. Each group had at least three recorded trials. Tracheal diameter was evaluated using ImageJ software (National Institutes of Health, Bethesda, MD) and was averaged between two raters. Average tracheal occlusion percentage was compared using Student t test. The average occlusion was 31% for group 1, 87.4% for group 2, and 20% for group 3. Significant differences were found between the control and tracheomalacia groups (P tracheomalacia and splinted tracheomalacia groups (P tracheomalacia groups (P = 0.13). Applied pressure was plotted against occlusion and regression line slope differed between the tracheomalacia (0.91) and control (0.12) or splinted tracheomalacia (0.39) groups. We demonstrate the potential for an ex vivo tracheomalacia model to reproduce airway collapse and show that this collapse can be treated successfully with a 3D-printed external splint. These results are promising and justify further studies. N/A. Laryngoscope, 127:950-955, 2017. © 2016 The American Laryngological, Rhinological and Otological Society, Inc.

  19. Didaktik 2.0

    DEFF Research Database (Denmark)

    Gynther, Karsten

    2010-01-01

    Læremiddel.dk – Nationalt Videncenter for Læremidler har netop afsluttet et 2-årigt udviklingsprojekt, ‘Læremiddelkultur og didaktik 2.0’. I samarbejde med lærere fra Køge, Kolding og Odense Kommune har projektet kortlagt lærere og elevers brug af gratis internetbaserede materialer med henblik på...... at udvikle og formidle viden om nye undervisnings- og arbejdsformer, der kan matche de udfordringer, som brugen af internettet gir skolen....

  20. Marketing 2.0: A new marketing strategy

    OpenAIRE

    Consoli, Domenico; Musso, Fabio

    2010-01-01

    The advent of Web 2.0 and its collaborative tools (forums, chat, blogs, wikis) simplified the interaction among various business subjects (company, customers, suppliers). A new model of Enterprise 2.0 communicates interactively with all stakeholders, cooperate with them, listen, create, share and capitalize knowledge. Web 2.0 enhances customer relationships and supports, fully, developments in the field of marketing: from advertisement to participation, from social networking to mobile comm...

  1. EJB 3.0 un EJB 2.0 salīdzinājums

    OpenAIRE

    Karnigins, Vadims

    2013-01-01

    Bakalaura darbā „EJB 3.0 un EJB 2.0 salīdzinājums” ir apskatītas atšķirības starp EJB 2.0 un EJB 3.0 tehnoloģijām - uzlabojumi tehnoloģijas trešajā versijā, salīdzinot ar otro, kā arī atšķirības programmēšanas pieejās, kas tiek diktētas ar EJB 3.0, salīdzinot ar EJB 2.0, un atšķirības starp 2. un 3. EJB tehnoloģijas versiju komponentēm. Darba praktiskajā daļā tiek apskatīta konkrētās Java EE lietotnes migrācija uz EJB 3.0 arhitektūru no EJB 2.0. Lietotne ir bankas karšu sistēmas sastāvdaļa...

  2. Using Web 2.0 applications to promote health-related physical activity: findings from the WALK 2.0 randomised controlled trial.

    Science.gov (United States)

    Kolt, Gregory S; Rosenkranz, Richard R; Vandelanotte, Corneel; Caperchione, Cristina M; Maeder, Anthony J; Tague, Rhys; Savage, Trevor N; Van, Itallie Anetta; Mummery, W Kerry; Oldmeadow, Christopher; Duncan, Mitch J

    2017-10-01

    Web 2.0 internet technology has great potential in promoting physical activity. This trial investigated the effectiveness of a Web 2.0-based intervention on physical activity behaviour, and the impact on website usage and engagement. 504 (328 women, 126 men) insufficiently active adult participants were randomly allocated to one of two web-based interventions or a paper-based Logbook group. The Web 1.0 group participated in the existing 10 000 Steps programme, while the Web 2.0 group participated in a Web 2.0-enabled physical activity intervention including user-to-user interaction through social networking capabilities. ActiGraph GT3X activity monitors were used to assess physical activity at four points across the intervention (0, 3, 12 and 18 months), and usage and engagement were assessed continuously through website usage statistics. Treatment groups differed significantly in trajectories of minutes/day of physical activity (p=0.0198), through a greater change at 3 months for Web 2.0 than Web 1.0 (7.3 min/day, 95% CI 2.4 to 12.3). In the Web 2.0 group, physical activity increased at 3 (mean change 6.8 min/day, 95% CI 3.9 to 9.6) and 12 months (3.8 min/day, 95% CI 0.5 to 7.0), but not 18 months. The Logbook group also increased physical activity at 3 (4.8 min/day, 95% CI 1.8 to 7.7) and 12 months (4.9 min/day, 95% CI 0.7 to 9.1), but not 18 months. The Web 1.0 group increased physical activity at 12 months only (4.9 min/day, 95% CI 0.5 to 9.3). The Web 2.0 group demonstrated higher levels of website engagement (p=0.3964). In comparison to a Web 1.0 intervention, a more interactive Web 2.0 intervention, as well as the paper-based Logbook intervention, improved physical activity in the short term, but that effect reduced over time, despite higher levels of engagement of the Web 2.0 group. ACTRN12611000157976. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to

  3. Smoking in Pregnancy and Parenthood: What Is the Role of Depression, Anxiety and Nicotine Addiction?

    Science.gov (United States)

    Bull, Leona; Burke, Ronan; Walsh, Siobhan; Whitehead, Emma

    2003-01-01

    Examined attitudes toward smoking, current smoking behavior, mental health difficulties, and nicotine addiction among 38 pregnant women, mothers of young children, and their partners in East Surrey, England. Found that 11 female respondents presented symptoms of depression, anxiety, or social dysfunction. Smokers did not differ from ex-smokers or…

  4. Web 2.0 (and Beyond)

    NARCIS (Netherlands)

    P.A. Arora (Payal)

    2015-01-01

    textabstractWeb 2.0 is a term coined to mark a new era of Internet usage driven by user interactivity and collaboration in generating content, moving away from the static information dissemination model associated with Web 1.0. It became common in early 2000 with the growth of social network sites,

  5. 22nd IAEA Fusion Energy Conference: summary of sessions EX/D, EX/S and EX/W

    International Nuclear Information System (INIS)

    Motojima, O.

    2009-01-01

    The sessions of experiments EX/D, EX/S and EX/W covering (D) Plasma-material interactions, Divertors, Limiters, SOL, (S) Stability, (W) Wave-plasma interactions, Current drive, Heating and Energetic particles are summarized in this paper. These general topics are divided into two categories, which are (1) ITER oriented and (2) ITER/DEMO oriented corresponding to the subject of each topic and considering the road map of fusion research. Topics in the ITER oriented category are strongly linked to the present direction of the fusion research for ITER, namely tokamak research, whereas issues in the ITER/DEMO oriented category are generally common issues for both tokamaks and helical devices.

  6. Gauging σ-model isometries in (2,0)-superspace

    International Nuclear Information System (INIS)

    Almeida, C.A.S.; Helayerl Neto, J.A.; Smith, A.W.

    1990-01-01

    Considering (2,0)-supersymmetric non-linear α-models defined over Kaehlerian coset manifolds, we discuss the gauging of the isotropy and isometry groups in (2,0)-superspace and present the action coupling these α-models to the (2,0)-Yang-Mills supermultiplets. (author)

  7. Thermal conductivity of (Np0.20Pu0.50Am0.25Cm0.05)O2−x solid solutions

    International Nuclear Information System (INIS)

    Nishi, Tsuyoshi; Takano, Masahide; Akabori, Mitsuo; Arai, Yasuo

    2013-01-01

    Highlights: • Thermal conductivity of (Np 0.20 Pu 0.50 Am 0.25 Cm 0.05 )O 2−x was evaluated. • Dependence of thermal conductivity on storage time was clarified. • Results were discussed with the lattice expansion model by self-irradiation. • After annealing at 1423 K in vacuum, thermal conductivity returned. -- Abstract: The authors prepared the sintered sample of (Np 0.20 Pu 0.50 Am 0.25 Cm 0.05 )O 2−x (2 − x = 1.98, 1.96) solid solution and evaluated the dependence of the thermal conductivity on storage time and temperature. The heat capacity of (Np 0.20 Pu 0.50 Am 0.25 Cm 0.05 )O 1.98 was measured between 324 and 1082 K by a drop calorimetry. The thermal diffusivity of (Np 0.20 Pu 0.50 Am 0.25 Cm 0.05 )O 1.98 was measured when the storage time became 48, 216, 720 and 1584 h and that of (Np 0.20 Pu 0.50 Am 0.25 Cm 0.05 )O 1.96 was measured when the storage time became 0,528 and 1386 h. In this study, the latter sample was annealed at 1423 K in vacuum with background pressure of less than 2.0 × 10 −4 Pa just after the measurement on the storage time, 1386 h. The thermal diffusivity of (Np 0.20 Pu 0.50 Am 0.25 Cm 0.05 )O 1.96 just after annealing returned to the values of the storage time, 0 h. This result reveals the thermal recovery behavior by annealing. The thermal conductivity of (Np 0.20 Pu 0.50 Am 0.25 Cm 0.05 )O 2−x was determined from the measured thermal diffusivity, heat capacity and bulk density. The thermal conductivity of (Np 0.20 Pu 0.50 Am 0.25 Cm 0.05 )O 2−x exponentially decreased with increasing storage time. This result suggested that the decrease of the thermal conductivity was attributed to the accumulation of lattice defects caused by self-irradiation

  8. Politische Bildung und das Web 2.0

    Directory of Open Access Journals (Sweden)

    Heike Schaumburg

    2011-08-01

    Full Text Available Aktuell erhält die Diskussion um die Rolle des Internet in der Politischen Bildung neuen Auftrieb durch die Entwicklung der sogenannten Web-2.0- Technologien, die im Vergleich zum Web 1.0 ein erheblich grösseres Potenzial zur Mitgestaltung politischer Inhalte und Prozesse und bzw. zur Partizipation bieten, aber auch neue Möglichkeiten der Kommunikation und Vernetzung eröffnen. In der vorliegenden Studie wird der Frage nachgegangen, inwieweit das Internet und speziell das Web 2.0 in der Lage sind, die in die Technik gesetzten Hoffnungen zu erfüllen. Dabei wird zunächst ausgelotet, welche Potenziale das Web 2.0 für die Politische Bildung mit Blick auf ihre didaktische Gestaltung bieten könnte. Im Anschluss daran wird auf der Basis einer Analyse des Internet-Angebots der traditionellen Anbieter Politischer Bildung (Bundes- und Landeszentralen für Politische Bildung, politische Stiftungen sowie von Internetportalen im Bereich Politische Bildung festgestellt, welche Verbreitung Web-2.0-Angebote gegenwärtig besitzen. Schliesslich wird auf der Grundlage einer Nutzerbefragung an knapp 300 Teilnehmern virtueller politischer Bildungsangebote einer politischen Stiftung der Frage nachgegangen, wie Web-2.0-Angebote in der Politischen Bildungsarbeit aus Nutzersicht beurteilt werden.

  9. Web 2.0 in Dutch Higher Education

    NARCIS (Netherlands)

    Westera, Wim

    2009-01-01

    Westera, W. (2008). Web 2.0 in Dutch Higher Education. In J. Armstrong & T. Franklin (Eds.), A Review of Current and Developing International Practice in the Use of Social Networking (Web 2.0) in Higher Education (pp. 61-71). Bristol: Clex.

  10. Web 2.0 and pharmacy education.

    Science.gov (United States)

    Cain, Jeff; Fox, Brent I

    2009-11-12

    New types of social Internet applications (often referred to as Web 2.0) are becoming increasingly popular within higher education environments. Although developed primarily for entertainment and social communication within the general population, applications such as blogs, social video sites, and virtual worlds are being adopted by higher education institutions. These newer applications differ from standard Web sites in that they involve the users in creating and distributing information, hence effectively changing how the Web is used for knowledge generation and dispersion. Although Web 2.0 applications offer exciting new ways to teach, they should not be the core of instructional planning, but rather selected only after learning objectives and instructional strategies have been identified. This paper provides an overview of prominent Web 2.0 applications, explains how they are being used within education environments, and elaborates on some of the potential opportunities and challenges that these applications present.

  11. Web 2.0 and Pharmacy Education

    Science.gov (United States)

    Fox, Brent I.

    2009-01-01

    New types of social Internet applications (often referred to as Web 2.0) are becoming increasingly popular within higher education environments. Although developed primarily for entertainment and social communication within the general population, applications such as blogs, social video sites, and virtual worlds are being adopted by higher education institutions. These newer applications differ from standard Web sites in that they involve the users in creating and distributing information, hence effectively changing how the Web is used for knowledge generation and dispersion. Although Web 2.0 applications offer exciting new ways to teach, they should not be the core of instructional planning, but rather selected only after learning objectives and instructional strategies have been identified. This paper provides an overview of prominent Web 2.0 applications, explains how they are being used within education environments, and elaborates on some of the potential opportunities and challenges that these applications present. PMID:19960079

  12. Usage Analysis of Web 2.0 and Library 2.0 Tools by Librarians in Kwara State Academic Libraries

    Science.gov (United States)

    Tella, Adeyinka; Soluoku, Taofeeqat

    2016-01-01

    This study analysed the usage of Web 2.0 and Library 2.0 tools by librarians in Kwara State academic libraries. A sample of 40 librarians was surveyed through total enumeration sampling technique from four different tertiary education institutions libraries in Kwara State, Nigeria. Questionnaire was used for the collection of data. The collected…

  13. Pathology in the era of Web 2.0.

    Science.gov (United States)

    Schreiber, William E; Giustini, Dean M

    2009-12-01

    In the past few years, the term Web 2.0 has become a descriptor for the increased functionality of Web sites, including those with medical content. Most physicians do not know what Web 2.0 means or how it can impact their work lives. This review provides some background on the evolution of Web 2.0 and describes how its features are being incorporated into medical Web sites. Some potential applications of Web 2.0 in pathology and laboratory medicine are discussed, as are the issues that must be considered when adopting this new technology.

  14. Learning UML 2.0

    CERN Document Server

    Miles, Russ

    2006-01-01

    Engaging and accessible, this book shows you how to use UML to craft and communicate your project's design. Russ Miles and Kim Hamilton have written a pragmatic introduction to UML based on hard-earned practice, not theory. Regardless of the software process or methodology you use, this book is the one source you need to get up and running with UML 2.0

  15. Integrating E-Learning 2.0 into Online Courses

    Science.gov (United States)

    Yuen, Steve Chi-Yin

    2014-01-01

    This paper provides an overview of e-learning 2.0 concepts and presents a case study that involves the design, development, and teaching of two online courses based on e-learning 2.0 concepts. The design and the construction of e-learning 2.0 courses, and their effects on the students' learning experience are examined. In addition, students'…

  16. OAuth 2.0 identity and access management patterns

    CERN Document Server

    Spasovski, Martin

    2013-01-01

    This is a practical and fast-paced guide that gives you all the information you need to start implementing secure OAuth 2.0 implementations in your web applications.OAuth 2.0 Identity and Access Management Patterns is intended for software developers, software architects, and enthusiasts working with the OAuth 2.0 framework.In order to learn and understand the OAuth 2.0 grant flow, it is assumed that you have some basic knowledge of HTTP communication. For the practical examples, basic knowledge of HTML templating, programming languages, and executing commands in the command line terminal is a

  17. The use of Web 2.0 technologies.

    Science.gov (United States)

    Kohtz, Cindy; Gowda, Connie; Stockert, Patricia; White, Jane; Kennel, Lynn

    2012-01-01

    Although many publications laud the potential benefits of using Web 2.0 technologies in nursing education, little has been published on the extent of their use. This descriptive study examined the personal and academic use of Web 2.0 technologies among nursing students enrolled in 3 different baccalaureate programs.

  18. Spøgelseshistorier 2.0

    DEFF Research Database (Denmark)

    Hansen, Kim Toft

    2012-01-01

    Jeg læser Arne Dahls miniroman Ghost House 2.0 som et eftertrykkeligt udråbstegn, der understreger den holdning til metafysik, som Arne Dahls bøger om A-gruppen signalerer. Den samlede krimiserie inddrager gennemgående en diskussion af metafysiske rammer, men viser samtidig en refleksiv distance...... inddrager den her alligevel, fordi den er en tyk streg under den holdning til metafysik, som Dahls krimiserie udviser....... dertil. Det er denne lokkelse såvel som distance, Dahl arbejder med i Ghost House 2.0. Ydermere bruger Arne Dahl i dette tilfælde metafiktionen som et kritisk element, hvilket skaber et særligt forhold mellem metafysik og metafiktion. Fortællingen handler i dette tilfælde dog ikke om A-gruppen. Jeg...

  19. Investigation of the structural, optical and dielectric properties of highly (1 0 0)-oriented (Pb{sub 0.60}Ca{sub 0.20}Sr{sub 0.20})TiO{sub 3} thin films on LaNiO{sub 3} bottom electrode

    Energy Technology Data Exchange (ETDEWEB)

    Pontes, D.S.L. [Laboratorio Interdisciplinar de Eletroquimica e Cerâmica, Department of Chemistry, Universidade Federal de São Carlos, Via Washington Luiz, Km 235, P.O. Box 676, 13565-905 São Carlos, São Paulo (Brazil); Pontes, F.M., E-mail: fenelon@fc.unesp.br [Department of Chemistry, Universidade Estadual Paulista, P.O. Box 473, 17033-360 Bauru, São Paulo (Brazil); Chiquito, A.J. [NanO LaB, Transporte Eletrônico em Nanoestruturas, Department of Physics, Universidade Federal de São Carlos, Via Washington Luiz, Km 235, P.O. Box 676, 13565-905 São Carlos, São Paulo (Brazil); Longo, E. [Laboratorio Interdisciplinar de Eletroquimica e Cerâmica, Department of Chemistry, Universidade Federal de São Carlos, Via Washington Luiz, Km 235, P.O. Box 676, 13565-905 São Carlos, São Paulo (Brazil); Institute of Chemistry, Universidade Estadual Paulista, Araraquara, São Paulo (Brazil)

    2014-07-01

    Highlights: • Highly (h 0 0) oriented LNO and PCST thin films were grown on LAO(1 0 0) substrate. • PCST/LNO/LAO structure shown classic ferroelectric–paraelectric phase transition. • PCST/LNO/LAO structure shows superior dielectric properties. • PCST/LAO films showed a direct allowed optical transition. - Abstract: Highly (1 0 0)-oriented Pb{sub 0.60}Ca{sub 0.20}Sr{sub 0.20}TiO{sub 3}/LNO/LAO structure was fabricated using a chemical deposition process via spin-coating technique. XRD revealed that both LNO and Pb{sub 0.60}Ca{sub 0.20}Sr{sub 0.20}TiO{sub 3} films grown on LAO(1 0 0) substrate and LNO/LAO(1 0 0) structure were crystallized to be highly (h 0 0)-oriented, respectively. AFM images revealed smooth surfaces, spherical-shaped grains and a crack-free surface with a roughness of about 3–7 nm. The tetragonal perovskite phase was confirmed by Raman spectroscopy for Pb{sub 0.60}Ca{sub 0.20}Sr{sub 0.20}TiO{sub 3}/LNO/LAO and Pb{sub 0.60}Ca{sub 0.20}Sr{sub 0.20}TiO{sub 3}/LAO structures. The optical transmittance of 340 nm thick Pb{sub 0.60}Ca{sub 0.20}Sr{sub 0.20}TiO{sub 3} films on a LAO(1 0 0) substrate exhibited an average transmittance above 80% in the wavelength range of 500–1000 nm and an optical band gap E{sub g} of 3.56 and 2.87 eV for the direct and indirect transition processes, respectively. The Au/Pb{sub 0.60}Ca{sub 0.20}Sr{sub 0.20}TiO{sub 3}/LNO/LAO structure has a hysteresis loop with remnant polarization, P{sub r}, of 12 μC/cm{sup 2}, and a coercive field, E{sub c}, of 46 kV/cm for an electric field at 370 kV/cm along with a dielectric constant over 1200.

  20. Predicting Complex Organic Molecule Emission from TW Hya

    Science.gov (United States)

    Vissapragada, Shreyas; Walsh, Catherine

    2017-01-01

    The Atacama Large Millimeter/submillimeter Array (ALMA) has significantly increased our ability to observe the rich chemical inventory of star and planet formation. ALMA has recently been used to detect CH3OH (methanol) and CH3CN (methyl cyanide) in protoplanetary disks; these molecules may be vital indicators of the complex organic ice reservoir in the comet-forming zone. We have constructed a physiochemical model of TW Hya, a well-studied protoplanetary disk, to explore the different formation mechanisms of complex ices. By running our model through a radiative transfer code and convolving with beam sizes appropriate for ALMA, we have obtained synthetic observations of methanol and methyl cyanide. Here, we compare and comment on these synthetic observations, and provide astrochemical justification for their spatial distributions.

  1. Infusing Classrooms with Web 2.0 Technologies

    Science.gov (United States)

    Velasco, Richard Carlos L.

    2018-01-01

    The evolution of digital technologies over the past couple of decades has contributed to a paradigm shift in education where the internet and web-based applications have become ubiquitous in primary and secondary classrooms (Glassman & Kang, 2011). With this shift came the digital phenomena known today as Web 2.0 technologies. Web 2.0

  2. Tetrandrine Induces Apoptosis in Human Nasopharyngeal Carcinoma NPC-TW 039 Cells by Endoplasmic Reticulum Stress and Ca2+/Calpain Pathways.

    Science.gov (United States)

    Liu, Kuo-Ching; Lin, Ya-Jing; Hsiao, Yung-Ting; Lin, Meng-Liang; Yang, Jiun-Long; Huang, Yi-Ping; Chu, Yung-Lin; Chung, Jing-Gung

    2017-11-01

    Tetrandrine is an alkaloid extracted from a traditional China medicine plant, and is considered part of food therapy as well. In addition, it has been widely reported to induce apoptotic cell death in many human cancer cells. However, the mechanism of Tetrandrine on human nasopharyngeal carcinoma cells (NPC) is still questioned. In our study, we examined whether Tetrandrine can induce apoptosis of NPC-TW 039 cells. We found that cell morphology was changed after treatment with different concentrations of Tetrandrine. Further, we indicated that the NPC-TW 039 cells viability decreased in a Tetrandrine dose-dependent manner. We also found that tetrandrine induced cell cycle arrest in G 0 /G 1 phase. Tetrandrine induced DNA condensation by DAPI staining as well. In addition, we found that Tetrandrine induced Ca 2+ release in the cytosol. At the same time, endoplasmic reticulum (ER) stress occurred. Then we used western blotting to examine the protein expression which is associated with mitochondria-mediated apoptotic pathways and caspase-dependent pathways. To further examine whether Ca 2+ was released or not with Tetrandrine induced-apoptosis, we used the chelator of Ca 2+ and showed that cell viability increased. At the same time, caspase-3 expression was decreased. Furthermore, confocal microscopy examination revealed that Tetrandrine induced expression of ER stress-related proteins GADD153 and GRP78. Our results indicate that Tetrandrine induces apoptosis through calcium-mediated ER stress and caspase pathway in NPC-TW 039 cells. In conclusion, Tetrandrine may could be used for treatment of human nasopharyngeal carcinoma in future. Copyright© 2017, International Institute of Anticancer Research (Dr. George J. Delinasios), All rights reserved.

  3. Web 2.0 in the Mathematics Classroom

    Science.gov (United States)

    McCoy, Leah P.

    2014-01-01

    A key characteristic of successful mathematics teachers is that they are able to provide varied activities that promote student learning and assessment. Web 2.0 applications can provide an assortment of tools to help produce creative activities. A Web 2.0 tool enables the student to enter data and create multimedia products using text, graphics,…

  4. Resident-performed Ex-PRESS shunt implantation versus trabeculectomy.

    Science.gov (United States)

    Seider, Michael I; Rofagha, Soraya; Lin, Shan C; Stamper, Robert L

    2012-09-01

    To compare outcomes between resident-performed trabeculectomy and Ex-PRESS shunt implantation. A consecutive cohort of 36 Ex-PRESS shunt implantations and 57 trabeculectomies (1 eye/patient) performed by resident surgeons in their third year of ophthalmic training at the University of California, San Francisco and at the San Francisco Veterans Administration Hospital, under the supervision of a single glaucoma fellowship-trained surgeon were included in this study. Eyes with PRESS shunt groups at all follow-up points. On average, the Ex-PRESS shunt group required significantly less ocular antihypertensive medication to control IOP at 3 months postoperative (P=0.01), but no difference was found at 6 months or 1 year (all, P≥0.28). A larger proportion of Ex-PRESS shunt patients had good IOP control without medication at 3 (P=0.057) and 6 months (P=0.076) postoperatively. No difference was found in the rates of sight-threatening complications between groups (all, P≥0.22). In the hands of ophthalmology residents in their third year of training, the trabeculectomy and Ex-PRESS shunt implantation procedures perform comparably in terms of postoperative IOP control, reduction in patient dependence on ocular antihypertensive medications, and risk of complication in our population.

  5. USES 2.0, The Uniform System for the Evaluation of Substances, version 2.0 ; supplement to EUSES

    NARCIS (Netherlands)

    Linders JBHJ; Jager DT (eds.); CSR; ECO

    1997-01-01

    Dit interimrapport beschrijft het risicobeoordelingssysteem voor landbouw- en niet-landbouwbestrijdingsmiddelen. Het zal worden geintegreerd met het European Union System for the Evaluation of Substances, EUSES 1.0, tot USES 2.0, de tweede versie van het Uniforme Beoordelingssysteem voor

  6. Design and Development Comparison of Rapid Cycle Amine 1.0, 2.0, and 3.0

    Science.gov (United States)

    Chullen, Cinda; Campbell, Colin; Papale, William; Murray, Sean; Wichowski, Robert; Conger, Bruce; McMillin, Summer

    2016-01-01

    The development of the Rapid Cycle Amine (RCA) swing-bed technology for carbon dioxide (CO2) removal has been in progress since favorable results were published in 1996. Shortly thereafter, a prototype was designed, developed, and tested successfully and delivered to Johnson Space Center in 1999. An improved prototype (RCA 1.0) was delivered to NASA in 2006 and sized for the extravehicular activity (EVA). The RCA swing-bed technology is a regenerative system which employs two alternating solid-amine sorbent beds to remove CO2 and water. The two-bed design employs a chemisorption process whereby the beds alternate between adsorption and desorption. This process provides for an efficient RCA operation that enables one bed to be in adsorb (uptake) mode, while the other is in the desorb (regeneration) mode. The RCA has progressed through several iterations of technology readiness levels. Test articles have now been designed, developed, and tested for the advanced space suit portable life support system (PLSS) including RCA 1.0, RCA 2.0, and RCA 3.0. The RCA 3.0 was the most recent RCA fabrication and was delivered to NASA-JSC in June 2015. The RCA 1.0 test article was designed with a pneumatically actuated linear motion spool valve. The RCA 2.0 and 3.0 test articles were designed with a valve assembly which allows for switching between uptake and regeneration modes while minimizing gas volume losses to the vacuum source. RCA 2.0 and 3.0 also include an embedded controller design to control RCA operation and provide the capability of interfacing with various sensors and other ventilation loop components. The RCA technology is low power, small, and has fulfilled all test requirements levied upon the technology during development testing thus far. This paper will provide an overview of the design and development of RCA 1.0, 2.0 and 3.0 including detail differences between the design specifications of each. Nomenclature.

  7. Towards adaptation in e-learning 2.0

    Science.gov (United States)

    Cristea, Alexandra I.; Ghali, Fawaz

    2011-04-01

    This paper presents several essential steps from an overall study on shaping new ways of learning and teaching, by using the synergetic merger of three different fields: Web 2.0, e-learning and adaptation (in particular, personalisation to the learner). These novel teaching and learning ways-the latter focus of this paper-are reflected in and finally adding to various versions of the My Online Teacher 2.0 adaptive system. In particular, this paper focuses on a study of how to more effectively use and combine the recommendation of peers and content adaptation to enhance the learning outcome in e-learning systems based on Web 2.0. In order to better isolate and examine the effects of peer recommendation and adaptive content presentation, we designed experiments inspecting collaboration between individuals based on recommendation of peers who have greater knowledge, and compare this to adaptive content recommendation, as well as to "simple" learning in a system with a minimum of Web 2.0 support. Overall, the results of adding peer recommendation and adaptive content presentation were encouraging, and are further discussed in detail in this paper.

  8. Sobre Comercio electrónico en la WEB 2.0 y 3.0

    OpenAIRE

    Francisco A. Fernández Nodarse

    2013-01-01

    El modelo Web 2.0 es un fenómeno emergente que viene a situar a este usuario en el centro de cualquier modelo de negocio. El comercio electrónico en la Web 2.0, la evolución del escaparate virtual a los prosumidores, la reputación corporativa en línea, los patrones de diseño, modelos de negocios, la WEB 2.0 y su evolución hacia la WEB 3.0 y algunas consideraciones sobre la seguridad informática son analizados en este estudio. El análisis de la seguridad informática abordó sus principios básic...

  9. Correlation and comparison of Risser sign versus bone age determination (TW3 between children with and without scoliosis in Korean population

    Directory of Open Access Journals (Sweden)

    Yang Jae-Hyuk

    2009-09-01

    Full Text Available Abstract Background Most studies comparing the Risser staging for skeletal maturity are representing the American or European standards which are not always applicable to Asian population who have relatively less height and body mass. There is no article available that compares the Risser sign and bone age correlation between patients with idiopathic scoliosis and patients without scoliosis. Materials and methods To analyze and compare the skeletal age with the Risser sign between scoliosis and non-scoliosis group, a cross-sectional study was done in 418 scoliosis (untreated, bracing or surgically and 256 non-scoliosis children of Korean origin. Relationship was found in both groups using Pearson correlation test. Results In scoliosis group, Pearson correlation exhibited significant correlation (p 2 = 0.791 for girls, 0.787 for boys and Risser sign and TW3 age (r2 = 0.718 for girls, 0.785 for boys. Non-scoliosis group also showed significant relationship (p 2 = 0.893 for girls, 0.879 for boys and Risser sign and TW3 age (r2 = 0.913 for girls, 0.895 for boys. Similarly, comparing Cobb angles of each patient according to their Risser staging, exhibited that if scoliosis remains untreated Cobb angle will increase with the increase in their Risser staging (r2 = 0.363 for girls, 0.443 for boys; p Conclusion Our results showed that chronological age is equally as reliable as skeletal age method to compare with Risser sign, and therefore, we do not mean to imply that only the Risser sign compared with skeletal age should be considered in the decision making in idiopathic as well as non-scoliosis patients of Korean ethnicity. Concomitant indicators such as menarchal period, secondary sex characteristics, and recent growth pattern will likely reinforce our data comparing Risser sign with skeletal age in decision making.

  10. The $(2,0)$ superconformal bootstrap

    CERN Document Server

    Beem, Christopher; Rastelli, Leonardo; van Rees, Balt C

    2016-01-01

    We develop the conformal bootstrap program for six-dimensional conformal field theories with $(2,0)$ supersymmetry, focusing on the universal four-point function of stress tensor multiplets. We review the solution of the superconformal Ward identities and describe the superconformal block decomposition of this correlator. We apply numerical bootstrap techniques to derive bounds on OPE coefficients and scaling dimensions from the constraints of crossing symmetry and unitarity. We also derive analytic results for the large spin spectrum using the lightcone expansion of the crossing equation. Our principal result is strong evidence that the $A_1$ theory realizes the minimal allowed central charge $(c=25)$ for any interacting $(2,0)$ theory. This implies that the full stress tensor four-point function of the $A_1$ theory is the unique unitary solution to the crossing symmetry equation at $c=25$. For this theory, we estimate the scaling dimensions of the lightest unprotected operators appearing in the stress tenso...

  11. Muutuste teel : raamatukogu 2.0 / Kate-Riin Kont

    Index Scriptorium Estoniae

    Kont, Kate-Riin, 1971-

    2007-01-01

    7.-10. maini 2007. a Helsingis ja Tallinnas toimunud raamatukogufoorumist "Muutuste teel: Library 2.0 (Making a difference - Moving towards Library 2.0), millel esines ettekandega suhteturundusest Tallinna Ülikooli infoteaduse osakonna dotsent Aira Lepik

  12. The PLATO 2.0 mission

    NARCIS (Netherlands)

    Rauer, H.; et al., [Unknown; Hekker, S.

    2014-01-01

    PLATO 2.0 has recently been selected for ESA’s M3 launch opportunity (2022/24). Providing accurate key planet parameters (radius, mass, density and age) in statistical numbers, it addresses fundamental questions such as: How do planetary systems form and evolve? Are there other systems with planets

  13. USES 2.0, The Uniform System for the Evaluation of Substances, version 2.0 ; supplement to EUSES

    NARCIS (Netherlands)

    Linders JBHJ; Jager DT; CSR; ECO

    1997-01-01

    This interim report describes the updated risk assessment system for agricultural and non-agricultural pesticides. It will be integrated with the European Union System for the Evaluation of Substances, EUSES 1.0, into USES 2.0, the second version of the Uniform System for the Evaluation of

  14. Happiness and the Family 2.0 Paradigm

    Science.gov (United States)

    Mocan, Rodica; Racorean, Stefana

    Does new media technology have the potential to make us happier? This paper explores the influence of new information communication technologies on family life satisfaction while analyzing some of the factors that determine changes in the way we live our lives in the information age. Family 2.0 is the new paradigm of family life and the emergence of Web 2.0 type of applications is at the very core of its existence.

  15. Deriving a Typology of Web 2.0 Learning Technologies

    Science.gov (United States)

    Bower, Matt

    2016-01-01

    This paper presents the methods and outcomes of a typological analysis of Web 2.0 technologies. A comprehensive review incorporating over 2000 links led to identification of over 200 Web 2.0 technologies that were suitable for learning and teaching purposes. The typological analysis involved development of relevant Web 2.0 dimensions, grouping…

  16. Biografia nieobecna. Wokół życia i twórczości Ireneusza Plater-Zyberka

    Directory of Open Access Journals (Sweden)

    Robert Zawisza

    2014-12-01

    Full Text Available An Absent Biography. About the life and work of Ireneusz Plater-Zyberk Ireneusz Plater-Zyberk (1896–1946, was a writer and a film producer, adventurer and gallant. His life is an incredible story of the disabled individual who succeeded in an amazing career. Plater-Zyberk was born in a wealthy landowning family who lived at the estate of Vabole in Latvia. He was born without hands and at that time, due to his disability, was classified as "margins of society." Thanks to perseverance and commitment of his mother, he graduated as an extern student from high school in Warsaw, Poland. His career  includes Life without Hands, memories,  and two novels. He was a co-author of first movie in Poland with stunt effects Dead Node (1927, which unfortunately wasn’t preserved. Also, he was recognized as a documentary creator as well as an initiator of film production regulations.   Biografia nieobecna. Wokół życia i twórczości Ireneusza Plater-Zyberka Ireneusz Plater-Zyberk (1896 lub 1897–1946 był literatem i twórcą filmowym, nieco awanturnikiem i bawidamkiem. Jego postać to niezwykły przykład niepełnosprawnego, który osiągnął w dwudziestoleciu międzywojennym znaczącą karierę. Ireneusz Plater-Zyberk pochodził z zamożnej rodziny ziemiańskiej, zamieszkałej w majątku Wabol na Łotwie. Urodził się bez rąk i w ówczesnej rzeczywistości miał pozostać na marginesie społeczeństwa. Dzięki wytrwałości matki udało mu się ukończyć jako ekstern gimnazjum w Warszawie. W swoim dorobku ma wspomnienia Życie bez rąk oraz dwie powieści. Ważną rolę odegrał Plater jako scenarzysta i reżyser, był m.in. współtwórcą pierwszego polskiego filmu z efektami kaskaderskimi „Martwy węzeł” (1927. Miał on również ogromne zasługi jako twórca filmów dokumentalnych i jednocześnie inspirator zmian w prawodawstwie dotyczącym produkcji filmowej. Tłem jego twórczości pisarskiej jest burzliwe i pełne przygód

  17. Microwave ablation: Results with double 915 MHz antennae in ex vivo bovine Livers

    International Nuclear Information System (INIS)

    Shi Wenyuan; Liang Ping; Zhu Qiang; Yu Xiaoling; Shao Qiujie; Lu Tong; Wang Yang; Dong Baowei

    2011-01-01

    Purpose: To investigate the settings for the optimal microwave ablation geometry with the simultaneous application of double 915 MHz antennae in ex vivo bovine livers, so as to provide the technical basis for treating large liver tumor in one ablation session. Materials and methods: MWAs were performed on ex vivo bovine livers by simultaneously application of double 915 MHz internally cooled-shaft antennae. Four power settings (50, 60, 70 and 80 W) were used during MWAs, while application time was fixed at 10 min. Three inter-antenna distances (2.0, 2.5 and 3.0 cm) were used. Diameters and shapes of the coagulation zones were observed on gross specimens. Results: (1) The coagulation shape was related to the inter-antenna distance, which was most spherical at an inter-antenna distance of 2.0 cm. A recess of the coagulation zone was observed at an inter-antenna distances of 2.5 and 3.0 cm. (2) The long-axis and short-axis coagulation diameter enlarged with increasing power output. However, there were no significant differences in the coagulation diameters between 70 and 80 W (P > 0.05). More desirable coagulation geometry could be obtained by simultaneous application of double antennae at 70 W for 10 min with an inter-antenna distance of 2.0 cm, the long-axis and short-axis coagulation diameter were 6.95 ± 0.32 cm and 5.30 ± 0.22 cm, respectively. Conclusion: Simultaneous application of double 915 MHz antennae can generate large coagulation zones with desirable shape which may be advantageous for treating large liver tumor in one ablation session.

  18. Ex post and ex ante willingness to pay (WTP) for the ICT Malaria Pf/Pv test kit in Myanmar.

    Science.gov (United States)

    Cho-Min-Naing; Lertmaharit, S; Kamol-Ratanakul, P; Saul, A J

    2000-03-01

    Willingness to pay (WTP) for the ICT Malaria Pf/Pv test kit was assessed by the contingent valuation method using a bidding game approach in two villages in Myanmar. Kankone (KK) village has a rural health center (RHC) and Yae-Aye-Sann (YAS) is serviced by community health worker (CHW). The objectives were to assess WTP for the ICT Malaria Pf/Pv test kit and to determine factors affecting the WTP. In both villages WTP was assessed in two different conditions, ex post and ex ante. The ex post WTP was assessed at an RHC in the KK village and at the residence of a CHW in the YAS village on patients immediately following diagnosis of malaria. The ex ante WTP was assessed by household interviews in both villages on people with a prior history of malaria. Ordinary least squares (OLS) multiple regression analysis was used to analyze factors affecting WTP. The WTP was higher in ex post conditions than ex ante in both villages. WTP was significantly positively associated with the average monthly income of the respondents and severity of illness in both ex post and ex ante conditions (p WTP (p < 0.05) in the ex post condition in the RHC survey in KK village.

  19. Untangling Web 2.0: Charting Web 2.0 Tools, the NCSS Guidelines for Effective Use of Technology, and Bloom's Taxonomy

    Science.gov (United States)

    Diacopoulos, Mark M.

    2015-01-01

    The potential for social studies to embrace instructional technology and Web 2.0 applications has become a growing trend in recent social studies research. As part of an ongoing process of collaborative enquiry between an instructional specialist and social studies teachers in a Professional Learning Community, a table of Web 2.0 applications was…

  20. WALK 2.0 - using Web 2.0 applications to promote health-related physical activity: a randomised controlled trial protocol.

    Science.gov (United States)

    Kolt, Gregory S; Rosenkranz, Richard R; Savage, Trevor N; Maeder, Anthony J; Vandelanotte, Corneel; Duncan, Mitch J; Caperchione, Cristina M; Tague, Rhys; Hooker, Cindy; Mummery, W Kerry

    2013-05-03

    Physical inactivity is one of the leading modifiable causes of death and disease in Australia. National surveys indicate less than half of the Australian adult population are sufficiently active to obtain health benefits. The Internet is a potentially important medium for successfully communicating health messages to the general population and enabling individual behaviour change. Internet-based interventions have proven efficacy; however, intervention studies describing website usage objectively have reported a strong decline in usage, and high attrition rate, over the course of the interventions. Web 2.0 applications give users control over web content generated and present innovative possibilities to improve user engagement. There is, however, a need to assess the effectiveness of these applications in the general population. The Walk 2.0 project is a 3-arm randomised controlled trial investigating the effects of "next generation" web-based applications on engagement, retention, and subsequent physical activity behaviour change. 504 individuals will be recruited from two sites in Australia, randomly allocated to one of two web-based interventions (Web 1.0 or Web 2.0) or a control group, and provided with a pedometer to monitor physical activity. The Web 1.0 intervention will provide participants with access to an existing physical activity website with limited interactivity. The Web 2.0 intervention will provide access to a website featuring Web 2.0 content, including social networking, blogs, and virtual walking groups. Control participants will receive a logbook to record their steps. All groups will receive similar educational material on setting goals and increasing physical activity. The primary outcomes are objectively measured physical activity and website engagement and retention. Other outcomes measured include quality of life, psychosocial correlates, and anthropometric measurements. Outcomes will be measured at baseline, 3, 12 and 18 months. The

  1. Archives in Web 2.0: new opportunities

    OpenAIRE

    Nogueira, Marta, 1977-

    2010-01-01

    Archives are using Web 2.0 applications in a context that allows for new types of interaction, new opportunities regarding institutional promotion, new ways of providing their services and making their heritage known to the community. Applications such as Facebook (online social network), Flickr (online image-sharing community) and YouTube (online video sharing community) are already used by cultural organisations that interact in the informal context of Web 2.0. In this article I aim to desc...

  2. Web 2.0 for social learning in higher education

    DEFF Research Database (Denmark)

    Nicolajsen, Hanne Westh

    2011-01-01

    The use of Web 2.0 in higher education provides for a number of different possibilities. In this paper we look into the use of Web 2.0 as a platform for social learning supplementing traditional teaching methods such as lectures and on place group work. The findings are astonishing revealing...... challenges such as the unknown genre of Web 2.0 for learning and changed behaviors with relevance for the identity creation and perception of others. The insight points to a number of issues of relevance when Web 2.0 is integrated in design for learning....

  3. LIBRARY 2.0 TIDAK TERASA ADA DI SEKITAR KITA

    Directory of Open Access Journals (Sweden)

    Rosa Widyawan

    2012-07-01

    Full Text Available This essay reveals application of Web 2.0 tools in some Indonesia university, academic, and special libraries. It is an explorative preliminary study, and this literature based article is a starting effort to conduct a more comprehensive research in this subject. Fifteen library web pages are examined to identify their application of Web 2.0 tools. It finds out that some of them use such tool, but they seem not really aware the advantages of Web 2.0 for their libraries. This essay suggest that the implementation of Web 2.0 tools should be supported by decission makers.

  4. Web 2.0 and Marketing Education: Explanations and Experiential Applications

    Science.gov (United States)

    Granitz, Neil; Koernig, Stephen K.

    2011-01-01

    Although both experiential learning and Web 2.0 tools focus on creativity, sharing, and collaboration, sparse research has been published integrating a Web 2.0 paradigm with experiential learning in marketing. In this article, Web 2.0 concepts are explained. Web 2.0 is then positioned as a philosophy that can advance experiential learning through…

  5. Verification and validation of DEPOSITION 2.0

    International Nuclear Information System (INIS)

    Eadie, W.J.

    1994-01-01

    The purpose of this document is to verify and validate the usage of the computer program, DEPOSITION 2.0 for use in assessing line loss in CAM and fixed head lines throughout certain Hanford Site facilities. The scope of use is limited to this function. DEPOSITION 2.0 is the second version of this code to be used on the Hanford Site, the program now incorporates additional user-friendly features beyond those which were available in an earlier version, DEPOSITION 1.03

  6. Becoming Teacher-Librarian 2.0

    Directory of Open Access Journals (Sweden)

    Anita Mary Brooks Kirkland

    2007-05-01

    Full Text Available This article discusses the place of Web 2.0 social software in the school library program. It examines the potential of this technology for enhancing teaching and learning, and the implications for students' information literacy. The article suggests ways for teacher-librarians to engage in professional learning to increase their knowledge of this evolving field.

  7. Sorbitol increases muscle glucose uptake ex vivo and inhibits intestinal glucose absorption ex vivo and in normal and type 2 diabetic rats.

    Science.gov (United States)

    Chukwuma, Chika Ifeanyi; Islam, Md Shahidul

    2017-04-01

    Previous studies have suggested that sorbitol, a known polyol sweetener, possesses glycemic control potentials. However, the effect of sorbitol on intestinal glucose absorption and muscle glucose uptake still remains elusive. The present study investigated the effects of sorbitol on intestinal glucose absorption and muscle glucose uptake as possible anti-hyperglycemic or glycemic control potentials using ex vivo and in vivo experimental models. Sorbitol (2.5% to 20%) inhibited glucose absorption in isolated rat jejuna (IC 50 = 14.6% ± 4.6%) and increased glucose uptake in isolated rat psoas muscle with (GU 50 = 3.5% ± 1.6%) or without insulin (GU 50 = 7.0% ± 0.5%) in a concentration-dependent manner. Furthermore, sorbitol significantly delayed gastric emptying, accelerated digesta transit, inhibited intestinal glucose absorption, and reduced blood glucose increase in both normoglycemic and type 2 diabetic rats after 1 h of coingestion with glucose. Data of this study suggest that sorbitol exhibited anti-hyperglycemic potentials, possibly via increasing muscle glucose uptake ex vivo and reducing intestinal glucose absorption in normal and type 2 diabetic rats. Hence, sorbitol may be further investigated as a possible anti-hyperglycemic sweetener.

  8. Bibliotecas universitarias 2.0. El caso de España University libraries 2.0. The case of Spain

    OpenAIRE

    José Luis Herrera Morillas; Ana Castillo Díaz

    2011-01-01

    En este artículo se recopilan los recursos de la Web 2.0 utilizados por las bibliotecas universitarias españolas y se analizan su finalidad y principales rasgos. Se combina la metodología de la visualización en línea y el análisis de contenido para estudiarla utilización que de dichos recursos hacen las 63 bibliotecas universitarias españolas. Entre las herramientas más empleadas destacan el acceso al OPAC 2.0, las redes sociales y los blogs. Por otra parte, entre los recursos menos empleados...

  9. Enabling Problem Based Learning through Web 2.0 Technologies

    DEFF Research Database (Denmark)

    Tambouris, Efthimios; Panopoulou, Eleni; Tarabanis, Konstantinos

    2012-01-01

    of modern educational systems. Established pedagogical strategies, such as Problem Based Learning (PBL), are being adapted for online use in conjunction with modern Web 2.0 technologies and tools. However, even though Web 2.0 and progressive social-networking technologies are automatically associated......Advances in Information and Communications Technology (ICT), particularly the so-called Web 2.0, are affecting all aspects of our life: how we communicate, how we shop, how we socialise, and how we learn. Facilitating learning through the use of ICT, also known as eLearning, is a vital part...... with ideals such as collaboration, sharing, and active learning, it is also possible to use them in a very conservative, teacher-centred way limiting thus their impact. In this paper, we present a PBL 2.0 framework, i.e., a framework combining PBL practices with Web 2.0 technologies. More specifically, we (a...

  10. T.W. Adorno e a psicologia social T.W. Adorno and social psychology

    Directory of Open Access Journals (Sweden)

    José Leon Crochík

    2008-08-01

    Full Text Available Neste ensaio, ressalta-se a importância da disciplina Psicologia Social na obra de T. W. Adorno e a concepção que formula acerca dessa disciplina. Esse autor defende que há uma nova forma de configuração dos indivíduos, expressada por atitudes e comportamentos individuais padronizados e por um ego frágil, facilmente cooptado por movimentos sociais totalitários. Tais indivíduos surgem em uma sociedade caracterizada por uma forma de dominação calcada na racionalidade administrativa e tecnológica. Para esse autor, a Psicologia Social deveria estudar esse objeto para que, com o esclarecimento produzido e difundido, os indivíduos possam resistir à adesão cega a movimentos sociais irracionais, tal como o fascismo, insistindo que a determinação desses movimentos não é individual, mas social.In this assay, the importance of Social Psychology discipline in the T.W. Adorno's work and the specific conception that he formulates about it are pointed out. He defends that there is a new way of individuals' configuration, expressed by standardized attitudes and their own behaviors, such as a fragile ego, which is easily co-opted by totalitarian social movements. Such individuals appear in a society characterized by a form of domination based on administrative and technological rationality. For that author, Social Psychology would have to study this issue so that, with the enlightenment achieved and diffused, the individuals are able to resist to the blind adhesion in irrational social movements, such as the fascism. Adorno empathized that the determination of these movements is not individual, but social.

  11. Government 2.0: key challenges to its realization

    NARCIS (Netherlands)

    Meijer, Albert Jacob; Koops, Bert-Jaap; Pieterson, Willem Jan; Overman, Sjors; ten Tije, Sanne

    2012-01-01

    Government 2.0 is often presented as a means to reinforce the relation between state and citizens in an information age. The promise of Government 2.0 is impressive but its potential has not or hardly been realized yet in practice. This paper uses insights from various disciplines to understand

  12. Web 2.0.: Conceptual foundations and Marketing Issues

    NARCIS (Netherlands)

    Constantinides, Efthymios; Fountain, Stefan J.

    2008-01-01

    This paper identifies the technological and commercial foundations of the new category of online applications commonly described as Web 2.0 or Social Media. It examines the relevance of Web 2.0 for Marketing Strategy and for Direct Marketing in particular. The issue is not a clear-cut one: while

  13. Heterogeneous computing with OpenCL 2.0

    CERN Document Server

    Kaeli, David R; Schaa, Dana; Zhang, Dong Ping

    2015-01-01

    Heterogeneous Computing with OpenCL 2.0 teaches OpenCL and parallel programming for complex systems that may include a variety of device architectures: multi-core CPUs, GPUs, and fully-integrated Accelerated Processing Units (APUs). This fully-revised edition includes the latest enhancements in OpenCL 2.0 including: Shared virtual memory to increase programming flexibility and reduce data transfers that consume resources Dynamic parallelism which reduces processor load and avoids bottlenecks Improved imaging support and integration with OpenGL  Designed to work on multiple platfor

  14. Noninvasive quantification of alveolar morphometry in elderly never- and ex-smokers

    Science.gov (United States)

    Paulin, Gregory A; Ouriadov, Alexei; Lessard, Eric; Sheikh, Khadija; McCormack, David G; Parraga, Grace

    2015-01-01

    Diffusion-weighted magnetic resonance imaging (MRI) provides a way to generate in vivo lung images with contrast sensitive to the molecular displacement of inhaled gas at subcellular length scales. Here, we aimed to evaluate hyperpolarized 3He MRI estimates of the alveolar dimensions in 38 healthy elderly never-smokers (73 ± 6 years, 15 males) and 21 elderly ex-smokers (70 ± 10 years, 14 males) with (n = 8, 77 ± 6 years) and without emphysema (n = 13, 65 ± 10 years). The ex-smoker and never-smoker subgroups were significantly different for FEV1/FVC (P = 0.0001) and DLCO (P = 0.009); while ex-smokers with emphysema reported significantly diminished FEV1/FVC (P = 0.02) and a trend toward lower DLCO (P = 0.05) than ex-smokers without emphysema. MRI apparent diffusion coefficients (ADC) and CT measurements of emphysema (relative area–CT density histogram, RA950) were significantly different (P = 0.001 and P = 0.007) for never-smoker and ex-smoker subgroups. In never-smokers, the MRI estimate of mean linear intercept (260 ± 27 μm) was significantly elevated as compared to the results previously reported in younger never-smokers (210 ± 30 μm), and trended smaller than in the age-matched ex-smokers (320 ± 72 μm, P = 0.06) evaluated here. Never-smokers also reported significantly smaller internal (220 ± 24 μm, P = 0.01) acinar radius but greater alveolar sheath thickness (120 ± 4 μm, P smokers. Never-smokers were also significantly different than ex-smokers without emphysema for alveolar sheath thickness but not ADC, while ex-smokers with emphysema reported significantly different ADC but not alveolar sheath thickness compared to ex-smokers without CT evidence of emphysema. Differences in alveolar measurements in never- and ex-smokers demonstrate the sensitivity of MRI measurements to the different effects of smoking and aging on acinar morphometry. PMID:26462748

  15. Aspectos de seguridad en Web 2.0 y redes sociales

    OpenAIRE

    Caballero Velasco, María Ángeles

    2011-01-01

    Este proyecto final de carrera de universidad va enfocado a la seguridad en la Web 2.0 y las redes sociales. El documento se divide en dos partes. La primera parte define la visión principal del mundo 2.0, cómo nació y que implicaciones tiene hoy en día en la sociedad. Se definen las características de la Web 2.0 y su historia. Se analizan las diferencias entre la Web 2.0 y la Web 1.0, llegando hasta la Web 3.0. Se clasifican los tipos de Web 2.0 por uso y por aplicación y se analizan todas l...

  16. Web 2.0 trænger ind i skolen

    DEFF Research Database (Denmark)

    Mehlsen, Camilla

    2010-01-01

    Det er ikke bare et stigende antal cyber kids, der presser på for at få web 2.0 ind i skolen. Flere uddannelsespolitiske tekster sætter nu fokus på, at elevernes it- og mediekompetencer skal være "i et web 2.0-perspektiv". Hvad skal der til, for at vi får en skole 2.0? Asterisk aflægger rapport fra...

  17. Students as Digital Citizens on Web 2.0

    Science.gov (United States)

    Nebel, Michelle; Jamison, Barbara; Bennett, Linda

    2009-01-01

    Internet tools associated with Web 2.0 such as wikis, blogs, and video podcasts are increasingly available in elementary classrooms. ("Web 2.0" is a vaguely defined, folk-tech term that means, roughly, the Internet and all software and devices, constantly improving, that strive to exploit it in creative and useful ways.) Today,…

  18. Semantic web technologies for enterprise 2.0

    CERN Document Server

    Passant, A

    2010-01-01

    In this book, we detail different theories, methods and implementations combining Web 2.0 paradigms and Semantic Web technologies in Enterprise environments. After introducing those terms, we present the current shortcomings of tools such as blogs and wikis as well as tagging practices in an Enterprise 2.0 context. We define the SemSLATES methodology and the global vision of a middleware architecture based on Semantic Web technologies and Linked Data principles (languages, models, tools and protocols) to solve these issues. Then, we detail the various ontologies that we build to achieve this g

  19. Strategy approach for eLearning 2.0 deployment in Universities

    Directory of Open Access Journals (Sweden)

    Oskar Casquero

    2010-12-01

    Full Text Available The institutionally powered Personal Learning Environment (iPLE constitutes our vision of how Web 2.0 technologies, people arrangement and data sharing could be applied for delivering open, flexible, distributed and learner-centred learning environments to university members. Based on the iPLE, this paper explores a strategy approach that universities could follow in order to deploy eLearning 2.0 tools and services. With that aim in mind, we review the patterns that Web 2.0 has successfully applied, and have been proved to encourage people to interact and to share information. Then, we present an eLearning 2.0 provisioning strategy based on iPLEs. Finally, we explain how this strategy can help translating Web 2.0 patterns to learning, and positioning universities as eLearning 2.0 providers.

  20. Ex situ Flora of China

    Directory of Open Access Journals (Sweden)

    Hongwen Huang

    2017-12-01

    Full Text Available The role of living collections-based research and discovery has been a prominent feature throughout the history of evolution and advance of botanical science: such research is the core and soul of the botanical gardens. Currently, there are c. 162 Chinese botanical gardens, harboring c. 20,000 species in China. As an example of initiatives to utilize the garden cultivated flora to address plant diversity conservation and germplasm discovery for sustainable agriculture and the bio-industries, the Ex situ Flora of China project aims to catalog and document this mega-diversity of plants that are cultivated in the Chinese botanical gardens. The concept of Ex situ Flora of China is a complete new formulation of species, based on garden cultivated individuals and populations, to obtain better morphological descriptions, provide multi-purpose applicability and a fundamental data service that will support national bio-strategies and bio-industries. It emphasises integrative information, accurately collected from living collections across different Chinese botanical gardens, on biology, phenology, cultivation requirements and uses of plant resources, which are normally not available from traditional Floras based on herbarium specimens. The ex situ flora should provide better information coverage for taxonomy, biological and introduction and collection data and color photos of stems, leaves, flowers, fruits and seed, as well as useful information of cultivation key points and main use of each plant. In general, the Ex situ Flora of China provides more useful information than the traditional Flora Reipublicae Popularis Sinicae. The project of Ex situ Flora of China is planned to be one of the most important initiatives of the plant diversity research platform for sustainable economic and social development in China.

  1. Study of medicine 2.0 due to Web 2.0?! - Risks and opportunities for the curriculum in Leipzig

    Science.gov (United States)

    Hempel, Gunther; Neef, Martin; Rotzoll, Daisy; Heinke, Wolfgang

    2013-01-01

    Web 2.0 is changing the study of medicine by opening up totally new ways of learning and teaching in an ongoing process. Global social networking services like Facebook, YouTube, Flickr, Google Drive and Xing already play an important part in communication both among students and between students and teaching staff. Moreover, local portals (such as the platform [http://www.leipzig-medizin.de] established in 2003) have also caught on and in some cases eclipsed the use of the well-known location-independent social media. The many possibilities and rapid changes brought about by social networks need to be publicized within medical faculties. Therefore, an E-learning and New Media Working Group was set up at the Faculty of Medicine of Universität Leipzig in order to harness the opportunities of Web 2.0, analyse the resulting processes of change in the study of medicine, and curb the risks of the Internet. With Web 2.0 and the social web already influencing the study of medicine, the opportunities of the Internet now need to be utilized to improve the teaching of medicine. PMID:23467440

  2. Study of medicine 2.0 due to Web 2.0?! -- risks and opportunities for the curriculum in Leipzig.

    Science.gov (United States)

    Hempel, Gunther; Neef, Martin; Rotzoll, Daisy; Heinke, Wolfgang

    2013-01-01

    Web 2.0 is changing the study of medicine by opening up totally new ways of learning and teaching in an ongoing process. Global social networking services like Facebook, YouTube, Flickr, Google Drive and Xing already play an important part in communication both among students and between students and teaching staff. Moreover, local portals (such as the platform [http://www.leipzig-medizin.de] established in 2003) have also caught on and in some cases eclipsed the use of the well-known location-independent social media. The many possibilities and rapid changes brought about by social networks need to be publicized within medical faculties. Therefore, an E-learning and New Media Working Group was set up at the Faculty of Medicine of Universität Leipzig in order to harness the opportunities of Web 2.0, analyse the resulting processes of change in the study of medicine, and curb the risks of the Internet. With Web 2.0 and the social web already influencing the study of medicine, the opportunities of the Internet now need to be utilized to improve the teaching of medicine.

  3. Nuevas perspectivas para la investigación en Internet: la Web 2.0 y la Empresa 2.0.

    Directory of Open Access Journals (Sweden)

    Romero Frías, Esteban

    2010-12-01

    Full Text Available Desde su creación en 1989, la World Wide Web (la Web ha revolucionado Internet, facilitando el acceso a información a muchos usuarios potenciales. Dos décadas más tarde, la Web forma parte de la vida diaria de muchas personas en todo el mundo, originando profundas transformaciones sociales que los investigadores en ciencias sociales batallan por comprender. Además, a lo largo de los últimos cinco años la Web ha sufrido importantes cambios debido al surgimiento y popularización de la llamada Web 2.0. Esto ha provocado una democratización en las herramientas de generación de información permitiendo que millones de personas se involucren en una conversación a escala global. Las tecnologías de la Web 2.0 y sus dinámicas de funcionamiento constituyen un área de gran futuro en la que profundizar en la investigación en ciencias sociales y, particularmente, en la investigación en el campo económico y de empresa. El concepto de Empresa 2.0 se deriva directamente de este nuevo contexto tecnológico.

  4. Using Web 2.0 to Teach Web 2.0: A Case Study in Aligning Teaching, Learning and Assessment with Professional Practice

    Science.gov (United States)

    Terrell, John; Richardson, Joan; Hamilton, Margaret

    2011-01-01

    Web 2.0 technologies have transformed the way people in information industries engage with their clients, collaborate on projects, promote their services and gather community knowledge. In this paper, we describe the impact of industry adoption of Web 2.0 technologies on an information management course. The students in this course are either…

  5. 78 FR 29117 - After Final Consideration Pilot Program 2.0

    Science.gov (United States)

    2013-05-17

    ...] After Final Consideration Pilot Program 2.0 AGENCY: United States Patent and Trademark Office, Commerce... Final Consideration Pilot Program (AFCP) to create the After Final Consideration Pilot Program 2.0 (AFCP....0 to consider the response. If the examiner's consideration of a proper AFCP 2.0 request and...

  6. Cross-cultural adaptation of the World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0) for Hebrew-speaking subjects with and without hand injury.

    Science.gov (United States)

    Marom, Batia S; Carel, Rafael S; Sharabi, Moshe; Ratzon, Navah Z

    2017-06-01

    The World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0) questionnaire is used internationally to assess function and disability. The instrument has been translated into several languages, but no Hebrew version exists. The objective of this study was to evaluate the use of the 12-item WHODAS 2.0 questionnaire among Hebrew speakers with and without hand injuries (HI). The translated questionnaire was conducted among 155 uninjured subjects (UI) and 77 male workers with HI. Internal consistency was assessed using Cronbach's alpha. Test-retest reliability was assessed in UI subjects and calculated using the intraclass correlation coefficient (ICC agreement ). Validity was evaluated by correlating the 12-item WHODAS 2.0 to the short-form of health survey (SF-12) in UI subjects and comparing the 12-item WHODAS 2.0 scores and the Quick Disability of Arm, Shoulder, and Hand (QDASH) Outcome Measure in the HI group. The Cronbach's alpha of the WHODAS 2.0 for the entire sample was α = 0.83. The ICC agreement for test-retest reliability was 0.88. A positive significant correlation was found between the 12-item WHODAS 2.0 and the QDASH (r s  = 0.53, p < .005). The results support the reliability and validity of this Hebrew translation of the 12-item WHODAS 2.0. IMPLICATIONS FOR REHABILITATION Measurement tools that assess activities and participation after HI are an essential part of the rehabilitation process. The 12-item WHODAS 2.0 is a useful tool, since it addresses a broader range of activity and participation domains compared to the DASH and enables better implementation of the ICF model. Since the WHODAS 2.0 does not target a specific disease (as oppose to the DASH), it can be used to compare disabilities caused by different diseases or traumas. The WHODAS 2.0 measures both the function and disability in general populations as well as clinical situations; therefore, the instrument is useful for assessing both health and disability.

  7. Digital Radiography for Determination of Primary Tooth Length: In Vivo and Ex Vivo Studies

    Directory of Open Access Journals (Sweden)

    Maria D. Basso

    2015-01-01

    Full Text Available Background. Methods for determining the root canal length of the primary tooth should yield accurate and reproducible results. In vitro studies show some limitations, which do not allow their findings to be directly transferred to a clinical situation. Aim. To compare the accuracy of radiographic tooth length obtained from in vivo digital radiograph with that obtained from ex vivo digital radiograph. Method. Direct digital radiographs of 20 upper primary incisors were performed in teeth (2/3 radicular resorption that were radiographed by an intraoral sensor, according to the long-cone technique. Teeth were extracted, measured, and mounted in a resin block, and then radiographic template was used to standardise the sensor-target distance (30 cm. The apparent tooth length (APTL was obtained from the computer screen by means of an electronic ruler accompanying the digital radiography software (CDR 2.0, whereas the actual tooth length (ACTL was obtained by means of a digital calliper following extraction. Data were compared to the ACTL by variance analysis and Pearson’s correlation test. Results. The values for APTL obtained from in vivo radiography were slightly underestimated, whereas those values obtained from ex vivo were slightly overestimated. No significance was observed (P≤0.48 between APTL and ACTL. Conclusion. The length of primary teeth estimated by in vivo and ex vivo comparisons using digital radiography was found to be similar to the actual tooth length.

  8. University Presentation to Potential Students Using Web 2.0 Environments

    Directory of Open Access Journals (Sweden)

    Andrius Eidimtas

    2013-02-01

    Full Text Available Choosing what to study for school graduates is a compound and multi-stage process (Chapman, 1981; Hossler et al., 1999; Brennan, 2001; Shankle, 2009. In the information retrieval stage, future students have to gather and assimilate actual information, form a list of possible higher education institutions. Nowadays modern internet technologies enable universities to create conditions for attractive and interactive information retrieval. Userfriendliness and accessibility of Web 2.0-based environments attract more young people to search for information in the web. Western universities have noticed a great potential of Web 2.0 in information dissemination back in 2007. Meanwhile, Lithuanian universities began using Web 2.0 to assemble virtual communities only in 2010 (Valinevičienė, 2010. Purpose—to disclose possibilities to present universities to school graduates in Web 2.0 environments. Design/methodology/approach—strategies of a case study by using methods of scientific literature analysis, observation and quantitative content analysis. Findings—referring to the information retrieval types and particularity of information retrieval by school graduates disclosed in the analysis of scientific literature, it has been identified that 76 per cent of Lithuanian universities apply at least one website created on the basis of Web 2.0 technology for their official presentation. The variety of Web 2.0 being used distributes only from 1 to 6 different tools, while in scientific literature more possibilities to apply Web 2.0 environments can be found. Research limitations/implications—the empiric part of the case study has been contextualized for Lithuania; however, the theoretic construct of possibilities to present universities in Web 2.0 environments can be used for the analysis presentation of foreign universities in Web 2.0 environments. Practical implications—the work can become the recommendation to develop possibilities for Lithuanian

  9. University Presentation to Potential Students Using Web 2.0 Environments

    Directory of Open Access Journals (Sweden)

    Andrius Eidimtas

    2012-12-01

    Full Text Available Choosing what to study for school graduates is a compound and multi-stage process (Chapman, 1981; Hossler et al., 1999; Brennan, 2001; Shankle, 2009. In the information retrieval stage, future students have to gather and assimilate actual information, form a list of possible higher education institutions. Nowadays modern internet technologies enable universities to create conditions for attractive and interactive information retrieval. Userfriendliness and accessibility of Web 2.0-based environments attract more young people to search for information in the web. Western universities have noticed a great potential of Web 2.0 in information dissemination back in 2007. Meanwhile, Lithuanian universities began using Web 2.0 to assemble virtual communities only in 2010 (Valinevičienė, 2010.Purpose—to disclose possibilities to present universities to school graduates in Web 2.0 environments.Design/methodology/approach—strategies of a case study by using methods of scientific literature analysis, observation and quantitative content analysis.Findings—referring to the information retrieval types and particularity of information retrieval by school graduates disclosed in the analysis of scientific literature, it has been identified that 76 per cent of Lithuanian universities apply at least one website created on the basis of Web 2.0 technology for their official presentation. The variety of Web 2.0 being used distributes only from 1 to 6 different tools, while in scientific literature more possibilities to apply Web 2.0 environments can be found.Research limitations/implications—the empiric part of the case study has been contextualized for Lithuania; however, the theoretic construct of possibilities to present universities in Web 2.0 environments can be used for the analysis presentation of foreign universities in Web 2.0 environments.Practical implications—the work can become the recommendation to develop possibilities for Lithuanian

  10. Irradiation of nuclear materials with laser-plasma filaments produced in air and deuterium by terrawatt (TW) laser pulses

    Science.gov (United States)

    Avotina, Liga; Lungu, Mihail; Dinca, Paul; Butoi, Bogdan; Cojocaru, Gabriel; Ungureanu, Razvan; Marcu, Aurelian; Luculescu, Catalin; Hapenciuc, Claudiu; Ganea, Paul C.; Petjukevics, Aleksandrs; Lungu, Cristian P.; Kizane, Gunta; Ticos, C. M.; Antohe, Stefan

    2018-01-01

    Be-C-W mixed materials with variable atomic ratios were exposed to high power (TW) laser induced filamentation plasma in air in normal conditions and in deuterium at a reduced pressure of 20 Torr. Morphological and structural investigations were performed on the irradiated zones for both ambient conditions. The presence of low-pressure deuterium increased the overall ablation rate for all samples. From the elemental concentration point of view, the increase of the carbon percentage has led to an increase in the ablation rate. An increase of the tungsten percentage had the opposite effect. From structural spectroscopic investigations using XPS, Raman and FT-IR of the irradiated and non-irradiated sample surfaces, we conclude that deuterium-induced enhancement of the ablation process could be explained by preferential amorphous carbon removal, possibly by forming deuterated hydrocarbons which further evaporated, weakening the layer structure.

  11. Portal WEB 2.0. utilizando Framework Struts

    OpenAIRE

    Palacín Mateo, Manuel

    2007-01-01

    El propósito de este proyecto es la implementación de un portal interactivo de contactos utilizando las tecnologías J2EE mediante Struts y siguiendo la tendencia Web 2.0. Previo a esta implementación se ha hecho una valoración del mercado actual de los portales de contactos y se han evaluado los servicios que ofrecen para posteriormente añadirlos a la demostración tecnológica. Tras esto se ha explicado lo que es la tendencia Web 2.0. Finalmente se han evaluado las diferentes opciones o tec...

  12. The mental health of UK ex-servicemen with a combat-related or a non-combat-related visual impairment: does the cause of visual impairment matter?

    Science.gov (United States)

    Stevelink, Sharon A M; Malcolm, Estelle M; Gill, Pashyca C; Fear, Nicola T

    2015-08-01

    Since the start of the conflicts in Iraq and Afghanistan, the numbers of young service personnel who have sustained a combat-related visual impairment have increased. This cross-sectional study examined the mental well-being of ex-servicemen (aged 22-55 years) with a visual impairment and determined if the mental health of those with a combat-related visual impairment differed from those whose visual impairment is not combat-related. Male ex-service personnel with a visual impairment completed a telephone interview assessing the presence of depressive symptomatology, probable anxiety disorder, post-traumatic stress disorder (PTSD) symptomatology and alcohol misuse. Data were analysed using descriptive statistics. 77 participants were included in the study, reflecting a response rate of 76.2%. Of those with complete data (n=74), 20 ex-servicemen had a combat-related visual impairment. Among ex-service personnel with a combat-related visual impairment, 10.0% (95% CI 0 to 23.2) screened positive for a probable depression, 25.0% (95% CI 6.0 to 44.0) for probable anxiety and 10.0% (95% CI 0 to 23.2) for probable PTSD. The prevalence of probable depression and probable PTSD differed among those with a non-combat-related visual impairment, namely 18.5% (95% CI 8.1 to 28.9) and 16.7% (95% CI 6.8 to 26.7), respectively. Probable anxiety was 18.5% (95% CI 8.1 to 28.9) among non-combat-related visually impaired ex-service personnel. 45.0% (95% CI 23.2 to 66.8) of combat-related visually impaired personnel reported hazardous drinking, compared with 20.4% (95% CI 9.7 to 31.2) of those with a non-combat-related visual impairment. Mental health problems were prevalent among visually impaired younger ex-servicemen. No statistically significant differences were found in the prevalence of mental health problems among ex-servicemen with a combat-related visual impairment compared with those with a non-combat-related visual impairment. Published by the BMJ Publishing Group Limited

  13. Guidelines for the undergraduate psychology major: Version 2.0.

    Science.gov (United States)

    2016-01-01

    The APA Guidelines for the Undergraduate Psychology Major: Version 2.0 (henceforth Guidelines 2.0; APA, 2013) represents a national effort to describe and develop high-quality undergraduate programs in psychology. The task force charged with the revision of the original guidelines for the undergraduate major examined the success of the document's implementation and made changes to reflect emerging best practices and to integrate psychology's work with benchmarking scholarship in higher education. Guidelines 2.0 abandoned the original distinction drawn between psychology-focused skills and psychology skills that enhance liberal arts development. Instead, Guidelines 2.0 describes five inclusive goals for the undergraduate psychology major and two developmental levels of student learning outcomes. Suggestions for assessment planning are provided for each of the five learning goals. (c) 2016 APA, all rights reserved).

  14. Validation of the Italian version of the Yale Food Addiction Scale 2.0 (I-YFAS 2.0) in a sample of undergraduate students.

    Science.gov (United States)

    Aloi, Matteo; Rania, Marianna; Rodríguez Muñoz, Rita Cristina; Jiménez Murcia, Susana; Fernández-Aranda, Fernando; De Fazio, Pasquale; Segura-Garcia, Cristina

    2017-09-01

    Food addiction (FA) refers to a condition characterized by addiction in relation to some high-fat and high-sugar carbohydrate that leads to clinically significant impairment or distress on several areas of functioning. The Yale Food Addiction Scale 2.0 (YFAS 2.0) has been recently updated to measure FA according to the DSM-5 criteria for substance-related and addictive disorders. This study aimed at validating the Italian version of YFAS 2.0. A sample of 574 Italian university students was involved in this research. Confirmatory Factor Analysis (CFA) and Kuder-Richardson's alpha for dichotomous data were run to evaluate scale structure and reliability. Correlations between YFAS 2.0 and eating psychopathology, binge eating, sleep, and mood symptoms were evaluated. Analogously to the original version, a single factor structure emerged at the CFA. The alpha coefficient was 0.87. Moreover, sound, from moderate to high, correlations were found with other measures. The Italian version of the YFAS 2.0 has demonstrated in a sample of university students to be a useful tool to investigate food addictions. Level of evidence Level V, descriptive study.

  15. The r-Java 2.0 code: nuclear physics

    Science.gov (United States)

    Kostka, M.; Koning, N.; Shand, Z.; Ouyed, R.; Jaikumar, P.

    2014-08-01

    Aims: We present r-Java 2.0, a nucleosynthesis code for open use that performs r-process calculations, along with a suite of other analysis tools. Methods: Equipped with a straightforward graphical user interface, r-Java 2.0 is capable of simulating nuclear statistical equilibrium (NSE), calculating r-process abundances for a wide range of input parameters and astrophysical environments, computing the mass fragmentation from neutron-induced fission and studying individual nucleosynthesis processes. Results: In this paper we discuss enhancements to this version of r-Java, especially the ability to solve the full reaction network. The sophisticated fission methodology incorporated in r-Java 2.0 that includes three fission channels (beta-delayed, neutron-induced, and spontaneous fission), along with computation of the mass fragmentation, is compared to the upper limit on mass fission approximation. The effects of including beta-delayed neutron emission on r-process yield is studied. The role of Coulomb interactions in NSE abundances is shown to be significant, supporting previous findings. A comparative analysis was undertaken during the development of r-Java 2.0 whereby we reproduced the results found in the literature from three other r-process codes. This code is capable of simulating the physical environment of the high-entropy wind around a proto-neutron star, the ejecta from a neutron star merger, or the relativistic ejecta from a quark nova. Likewise the users of r-Java 2.0 are given the freedom to define a custom environment. This software provides a platform for comparing proposed r-process sites.

  16. Herramientas colaborativas para la Gestión del Conocimiento en la Universidad 2.0 (Collaborative tools for Knowledge Management at the University 2.0

    Directory of Open Access Journals (Sweden)

    Laidy De Armas Jacomino

    2016-03-01

    Full Text Available Spanish abstract En el contexto empresarial se presentan a diario múltiples problemas que ya han sido resueltos por otras personas anteriormente. Además se buscan informaciones en el exterior cuando la empresa cuenta con expertos en la materia que pudieran contribuir con su conocimiento y aportar a su capital intelectual. Estas situaciones se evidencian de forma particular en las universidades ya que confluyen diversas ciencias y sectores. Para evitar esto se comienza a implementar la Filosofía 2.0, que evita que se pierda el conocimiento organizacional facilitando la colaboración para compartir información, contactos y recursos entre sus miembros. En el caso de las universidades se acuña el término Universidad 2.0 que está asociado en gran medida al uso de herramientas y conceptos colaborativos de la Web 2.0 en sus procesos formativos y empresariales. Estas herramientas se encuentran enfocadas principalmente en las personas y en brindarles la posibilidad de socializar lo que saben convirtiéndose en participantes activos en la construcción y divulgación de nuevo conocimiento. En el presente trabajo se abordan los términos Web 2.0, Empresa 2.0 y Universidad 2.0, así como la marcada relación entre ellos. Además se da a conocer la evolución de la universidad hacia el trabajo colaborativo a través de la Web. Se muestran también herramientas colaborativas que apoyan la Gestión del Conocimiento en la Universidad 2.0. Por último, se proponen un grupo de ideas para la implantación de la Gestión del Conocimiento a través de herramientas colaborativas de la Web en una universidad cubana. English abstract In business context recurrent problems appear. In addition, information outside the organization are searched when the company has experts in the field who could contribute their knowledge and intellectual capital. These situations are particularly evident in the universities which converge various sciences and sectors. To avoid

  17. Measurement of the t anti tZ and t anti tW production cross sections in multilepton final states using 3.2 fb{sup -1} of pp collisions at √(s) = 13 TeV with the ATLAS detector

    Energy Technology Data Exchange (ETDEWEB)

    Aaboud, M. [Univ. Mohamed Premier et LPTPM, Oujda (Morocco). Faculte des Sciences; Aad, G. [CPPM, Aix-Marseille Univ. et CNRS/IN2P3, Marseille (France); Abbott, B. [Oklahoma Univ., Norman, OK (United States). Homer L. Dodge Dept. of Physics and Astronomy; Collaboration: ATLAS Collaboration; and others

    2017-01-15

    A measurement of the t anti tZ and t anti tW production cross sections in final states with either two same-charge muons, or three or four leptons (electrons or muons) is presented. The analysis uses a data sample of proton-proton collisions at √(s) = 13 TeV recorded with the ATLAS detector at the Large Hadron Collider in 2015, corresponding to a total integrated luminosity of 3.2 fb{sup -1}. The inclusive cross sections are extracted using likelihood fits to signal and control regions, resulting in σ{sub t} {sub anti} {sub tZ} = 0.9 ± 0.3 pb and σ{sub t} {sub anti} {sub tW} = 1.5 ± 0.8 pb, in agreement with the Standard Model predictions. (orig.)

  18. Lehre 2.0 - Wie werden Social Media und Web 2.0 in die medizinische Ausbildung eingebunden? Ein systematischer Literaturüberblick [Education 2.0 - How has social media and Web 2.0 been integrated into medical education? A systematical literature review

    Directory of Open Access Journals (Sweden)

    Ückert, Frank

    2013-02-01

    Full Text Available [english] Objective: Present-day students have grown up with considerable knowledge concerning multi-media. The communication modes they use are faster, more spontaneous, and independent of place and time. These new web-based forms of information and communication are used by students, educators, and patients in various ways. Universities which have already used these tools report many positive effects on the learning behaviour of the students. In a systematic literature review, we summarized the manner in which the integration of Social Media and Web 2.0 into education has taken place. Method: A systematic literature search covering the last 5 years using MeSH terms was carried out via PubMed.Result: Among the 20 chosen publications, there was only one German publication. Most of the publications are from the US and Great Britain. The latest publications report on the concrete usage of the tools in education, including social networking, podcasts, blogs, wikis, YouTube, Twitter and Skype.Conclusion: The integration of Web 2.0 and Social Media is the modern form of self-determined learning. It stimulates reflection and actively integrates the students in the construction of their knowledge. With these new tools, the students acquire skills which they need in both their social and professional lives. [german] Zielsetzung: Die Studierenden sind mit einem hohen multimedialen Bezug aufgewachsen. Die von ihnen genutzten Kommunikationswege sind schneller, spontaner und unabhängig von Ort und Zeit geworden. Diese neuen webbasierten Informations- und Kommunikationswege werden von Studierenden, Lehrenden und Patienten in vielfältigen Weisen genutzt. Universitäten, die diese Tools in der Lehre einsetzten, berichten über viele positive Auswirkungen auf das Lernverhalten der Studierenden. In einer systematischen Literaturübersicht wird zusammengestellt, für welche Lehr- und Lernformen Social Media und Web 2.0 Tools in der derzeitigen medizinischen

  19. Ex-situ XPS-investigation of the interface between PE-CVD SiO{sub 2} and wet chemically etched MO-CVD epitaxial layers of In{sub 0.53}Ga{sub 0.47}As

    Energy Technology Data Exchange (ETDEWEB)

    Procop, M. [Bundesanstalt fuer Materialforschung und -pruefung, Berlin (Germany); Wandel, K. [Humboldt-Universitaet, Berlin (Germany). Inst. fuer Festkoerperphysik; Verucchi, R. [Modena Univ. (Italy). Ist. di Fisica

    1995-11-01

    The As rich SiO{sub 2}/In{sub 0.53}Ga{sub 0.47}As interface which is produced by wet chemical etching before SiO{sub 2} deposition to improve the electronic properties of the interface has been studied. SiO{sub 2}-layers of about 10 to 20 nm thickness have been deposited in a plasma enhanced chemical vapour deposition (PECVD) reactor and then thinned down to about 4 to 3 nm by 1.5 keV Ar ion beam bombardment at grazing incidence (85 ) in the XPS analysis chamber. The photoelectron spectra show that an additional broadening of the In and As lines due to a possible ion beam damage can be neglected in case of a qualitative interpretation of the interface spectra. Moreover, TRIM simulations of the collision cascade reveal low damage production in the SiO{sub 2}/In{sub 0.53}Ga{sub 0.47}As interface region. Therefore such ex-situ XPS experiments allow a supervision of the interface chemistry after the fabrication process and an optimisation of the technology with regard to the etching solution and deposition conditions. The conservation or removal of the elemental arsenic and the oxidation of the semiconductor due to the SiO{sub 2} deposition are well reflected in the photoelectron spectra. (orig.)

  20. Has Web 2.0 Revitalized Informal Learning? The Relationship between Web 2.0 and Informal Learning

    Science.gov (United States)

    Song, D.; Lee, J.

    2014-01-01

    Learning is becoming increasingly self-directed and often occurs away from schools and other formal educational settings. The development of a myriad of new technologies for learning has enabled people to learn anywhere and anytime. Web 2.0 technology allows researchers to shed a new light on the importance and prevalence of informal learning.…

  1. Preservice Teachers' Critical Thinking Dispositions and Web 2.0 Competencies

    Science.gov (United States)

    Sendag, Serkan; Erol, Osman; Sezgin, Sezan; Dulkadir, Nihal

    2015-01-01

    The aim of this study was to investigate the associations between preservice teachers' Web 2.0 competencies and their critical thinking disposition (CTD). The study employed an associational research design using California Critical Thinking Disposition-Inventory (CCTD-I) and a Web 2.0 competency questionnaire including items related to Web 2.0

  2. Validating WCAG versions 1.0 and 2.0 through usability testing with disabled users

    DEFF Research Database (Denmark)

    Rømen, Dagfinn; Svanæs, Dag

    2012-01-01

    ) and a control group (N = 6), it was found that only 27% of the identified website accessibility problems could have been identified through the use of WCAG 1.0. A similar analysis of conformance to WCAG 2.0 showed a marginal 5% improvement concerning identified website accessibility problems. Compensating...... accessibility evaluations and guidelines in many countries. WCAG version 2.0 was released in 2008. This paper reports on a study that empirically validated the usefulness of using WCAG as a heuristic for website accessibility. Through controlled usability tests of two websites with disabled users (N = 7...... for the low number of test subjects with confidence tests gave results that were still low (42% for WCAG 1.0 and 49% for WCAG 2.0, with 95% confidence). It is concluded from this that the application of WAI accessibility guidelines is not sufficient to guarantee website accessibility. It is recommended...

  3. Financing long-term care: ex ante, ex post or both?

    Science.gov (United States)

    Costa-Font, Joan; Courbage, Christophe; Swartz, Katherine

    2015-03-01

    This paper attempts to examine the heterogeneity in the public financing of long-term care (LTC) and the wide-ranging instruments in place to finance LTC services. We distinguish and classify the institutional responses to the need for LTC financing as ex ante (occurring prior to when the need arises, such as insurance) and ex post (occurring after the need arises, such as public sector and family financing). Then, we examine country-specific data to ascertain whether the two types of financing are complements or substitutes. Finally, we examine exploratory cross-national data on public expenditure determinants, specifically economic, demographic and social determinants. We show that although both ex ante and ex post mechanisms exist in all countries with advanced industrial economies and despite the fact that instruments are different across countries, ex ante and ex post instruments are largely substitutes for each other. Expenditure estimates to date indicate that the public financing of LTC is highly sensitive to a country's income, ageing of the population and the availability of informal caregiving. Copyright © 2015 John Wiley & Sons, Ltd.

  4. Association of Parathyroid Gland Biopsy Excision Technique With Ex Vivo Radiation Counts During Radioguided Parathyroid Surgery.

    Science.gov (United States)

    Hinson, Andrew M; Lawson, Bradley R; Franco, Aime T; Stack, Brendan C

    2017-06-01

    Parathyroid biopsy represents a means for normal and hyperfunctional glands to be distinguished intraoperatively. However, no data exist to guide surgeons regarding how much of a parathyroid gland must be biopsied to satisfy the 20% rule. To quantify the relative proportion of a hyperfunctional parathyroid gland that must be evaluated with the gamma probe to satisfy the 20% rule. A retrospective review of surgical data for 24 consecutive patients (16 women, 18 men; mean [SD] age, 66.6 [10] years; range, 51-83 years) who underwent surgery for primary hyperparathyroidism between May and October, 2015, in a tertieary academic medical center. Extirpated parathyroid glands were sectioned into parallel or pie-shaped biopsies and evaluated ex vivo with a gamma probe to determine what percentage of a hyperfunctional gland must be sampled to meet the Norman 20% rule. The hypothesis was formulated during data collection. In total, 253 ex vivo biopsy specimens were obtained from 33 surgically removed parathyroid glands. Parathyroid biopsies satisfied the 20% rule with an accuracy that depended on the relative proportion of the parent gland represented: half or more (96.6%; 95% CI, 91.7%-100.0%), a quarter to one-half (87.0%; 95% CI, 79.3%-94.7%), less than a quarter (63.6%; 95% CI, 54.5%-72.8%). When less than a quarter of the gland was removed, pie-shaped biopsies were more likely to satisfy the 20% rule compared with parallel biopsies of the same weight (78.4% vs 56.2%; absolute difference, 22.2%; 95% CI, 4.7%-39.7%). Unless half of a parathyroid gland is biopsied during radioguided parathyroidectomy, the 20% rule cannot reliably rule out the presence of a hyperfunctional parathyroid lesion. Pie-shaped biopsies originating from the center of the gland are associated with a lower rate of false-negative results compared with peripheral biopsies of similar size. Pie-shaped biopsies and biopsy of half or more of each nonexcised parathyroid gland for ex vivo counts may increase

  5. Exploring technology impacts of Healthcare 2.0 initiatives.

    Science.gov (United States)

    Randeree, Ebrahim

    2009-04-01

    As Internet access proliferates and technology becomes more accessible, the number of people online has been increasing. Web 2.0 and the social computing phenomena (such as Facebook, Friendster, Flickr, YouTube, Blogger, and MySpace) are creating a new reality on the Web: Users are changing from consumers of Web-available information and resources to generators of information and content. Moving beyond telehealth and Web sites, the push toward Personal Health Records has emerged as a new option for patients to take control of their medical data and to become active participants in the push toward widespread digitized healthcare. There is minimal research on the impact of Web 2.0 in healthcare. This paper reviews the changing patient-physician relationship in the Healthcare 2.0 environment, explores the technological challenges, and highlights areas for research.

  6. Electromagnetic tracking for CT-guided spine interventions: phantom, ex-vivo and in-vivo results

    International Nuclear Information System (INIS)

    Bruners, Philipp; Penzkofer, Tobias; Nagel, Markus; Elfring, Robert; Schmitz-Rode, Thomas; Gronloh, Nina; Guenther, Rolf W.; Mahnken, Andreas H.

    2009-01-01

    An electromagnetic-based tracking and navigation system was evaluated for interventional radiology. The electromagnetic tracking system (CAPPA IRAD EMT, CASinnovations, Erlangen, Germany) was used for real-time monitoring of punctures of the lumbar facet joints and intervertebral disks in a spine phantom, three pig cadavers and three anaesthesized pigs. Therefore, pre-interventional computed tomography (CT) datasets were transferred to the navigation system and puncture trajectories were planned. A coaxial needle was advanced along the trajectories while the position of the needle tip was monitored in real time. After puncture tracts were marked with pieces of wire another CT examination was performed and distances between wires and anatomical targets were measured. Performing punctures of the facet joints mean needle positioning errors were 0.4 ± 0.8 mm in the spine phantom, 2.8 ± 2.1 mm ex vivo and 3.0 ± 2.0 mm in vivo with mean length of the puncture tract of 54.0 ± 10.4 mm (phantom), 51.6 ± 12.6 mm (ex vivo) and 50.9 ± 17.6 mm (in vivo). At first attempt, intervertebral discs were successfully punctured in 15/15 in the phantom study, in 12/15 in the ex-vivo study and 14/15 in the in-vivo study, respectively. Immobilization of the patient and optimal positioning of the field generator are essential to achieve a high accuracy of needle placement in a clinical CT setting. (orig.)

  7. Zend framework 2.0 by example beginner's guide

    CERN Document Server

    Shasankar, Krishna

    2013-01-01

    Zend Framework 2.0 by Example: Beginner's Guide is a step-by-step guide that aims to empower you to build web applications packed with some really exciting features using Zend Framework 2.0.If you are a PHP Developer who is new to Zend Framework, but you want to get hands-on with the product quickly, this book is for you. Basic knowledge of object oriented programming with PHP is expected.

  8. Kidneys From α1,3-Galactosyltransferase Knockout/Human Heme Oxygenase-1/Human A20 Transgenic Pigs Are Protected From Rejection During Ex Vivo Perfusion With Human Blood.

    Science.gov (United States)

    Ahrens, Hellen E; Petersen, Björn; Ramackers, Wolf; Petkov, Stoyan; Herrmann, Doris; Hauschild-Quintern, Janet; Lucas-Hahn, Andrea; Hassel, Petra; Ziegler, Maren; Baars, Wiebke; Bergmann, Sabine; Schwinzer, Reinhard; Winkler, Michael; Niemann, Heiner

    2015-07-01

    Multiple modifications of the porcine genome are required to prevent rejection after pig-to-primate xenotransplantation. Here, we produced pigs with a knockout of the α1,3-galactosyltransferase gene (GGTA1-KO) combined with transgenic expression of the human anti-apoptotic/anti-inflammatory molecules heme oxygenase-1 and A20, and investigated their xenoprotective properties. The GGTA1-KO/human heme oxygenase-1 (hHO-1)/human A20 (hA20) transgenic pigs were produced in a stepwise approach using zinc finger nuclease vectors targeting the GGTA1 gene and a Sleeping Beauty vector coding for hA20. Two piglets were analyzed by quantitative reverse-transcription polymerase chain reaction, flow cytometry, and sequencing. The biological function of the genetic modifications was tested in a (51)Chromium release assay and by ex vivo kidney perfusions with human blood. Disruption of the GGTA1 gene by deletion of few basepairs was demonstrated in GGTA1-KO/hHO-1/hA20 transgenic pigs. The hHO-1 and hA20 mRNA expression was confirmed by quantitative reverse-transcription polymerase chain reaction. Ex vivo perfusion of 2 transgenic kidneys was feasible for the maximum experimental time of 240 minutes without symptoms of rejection. Results indicate that GGTA1-KO/hHO-1/hA20 transgenic pigs are a promising model to alleviate rejection and ischemia-reperfusion damage in porcine xenografts and could serve as a background for further genetic modifications toward the production of a donor pig that is clinically relevant for xenotransplantation.

  9. Information Literacy and Web 2.0: Is It Just Hype?

    Science.gov (United States)

    Godwin, Peter

    2009-01-01

    Purpose: The purpose of this paper is to demonstrate that Web 2.0 provides an exciting set of tools for librarians to help their students become more information-literate. Design/methodology/approach: Recently, information overload and Web 2.0 have led librarians to adopt practices labelled as Library 2.0. Information literacy can be the key to…

  10. Techno-economic and uncertainty analysis of in situ and ex situ fast pyrolysis for biofuel production

    Energy Technology Data Exchange (ETDEWEB)

    Li, Boyan; Ou, Longwen; Dang, Qi; Meyer, Pimphan A.; Jones, Susanne B.; Brown, Robert C.; Wright, Mark

    2015-11-01

    This study evaluates the techno-economic uncertainty in cost estimates for two emerging biorefinery technologies for biofuel production: in situ and ex situ catalytic pyrolysis. Stochastic simulations based on process and economic parameter distributions are applied to calculate biorefinery performance and production costs. The probability distributions for the minimum fuel-selling price (MFSP) indicate that in situ catalytic pyrolysis has an expected MFSP of $4.20 per gallon with a standard deviation of 1.15, while the ex situ catalytic pyrolysis has a similar MFSP with a smaller deviation ($4.27 per gallon and 0.79 respectively). These results suggest that a biorefinery based on ex situ catalytic pyrolysis could have a lower techno-economic risk than in situ pyrolysis despite a slightly higher MFSP cost estimate. Analysis of how each parameter affects the NPV indicates that internal rate of return, feedstock price, total project investment, electricity price, biochar yield and bio-oil yield are significant parameters which have substantial impact on the MFSP for both in situ and ex situ catalytic pyrolysis.

  11. Bιβλιοκρισία του: P. ANTONOPOULOS, The Reign of Cunincpert. Saga, Reality, Stability and Progress in Lombard Italy at the End of the Seventh Century, Porphyrogenitus Ltd, Camberley, Surrey 2010

    Directory of Open Access Journals (Sweden)

    Κωνσταντίνος ΧΡΗΣΤΟΥ

    2012-03-01

    Full Text Available ΒΙβλιοκρισία του: P. ANTONOPOULOS, The Reign of Cunincpert. Saga, Reality, Stability and Progress in Lombard Italy at the End of the Seventh Century, Porphyrogenitus Ltd, Camberley, Surrey 2010, σσ. Χ+138 (ΙSBN 1 871328 18 7.

  12. Networked Mediated Influence 2.0

    Science.gov (United States)

    2014-12-12

    However, an eye-witness account for Egypt as to how the movement was organized and executed comes from Wael Ghonim’s book, Revolution 2.0. This book...Social Media and Contemporary Activism. They have each described the social movement environments which have occurred in Egypt , Spain and the U.S...formal leaders and being “’open.’”117 It is a shift, due to technological innovations from “the pyramidal structures characteristic of bureaucratic

  13. Assessing the subsequent effect of nitrogen released from tobacco-waste on maize crop using a ¹⁵N isotope technique.

    Science.gov (United States)

    Karaman, M Rüştü; Brohi, A Reşit

    2013-06-01

    The investigation of the residual effect of nitrogen (N) released from tobacco-waste (TW) using isotope techniques will provide valuable data for sustainable organic farming. For this aim, a pot experiment was conducted using the (15)N isotope technique. The experiment was based on a completely randomised design with four replications and was conducted on a calcareous ustochrepts soil. TW at levels of 0, 10, 20, 30 and 40 t ha(-1) and N fertiliser as (NH₄)₂SO₂ at levels of 0, 20, 40, 60 and 80 kg N ha(-1) were used for the Bezostaja-1 wheat variety. Concerning mineral N fertilisation with 20 and 80 kg N ha(-1), additional treatments with (15)N-labelled (NH₄)₂SO₂ (10 at.% exc.) have been applied. Following harvesting wheat plants, the Pioneer 3377 maize variety was used to see the residual effect of TW. After harvesting, dry matter yields were recorded and total N concentrations were determined. (15)N determinations and calculations were also made for (15)N treatments separately. TW had a significant residual effect on the growth of corn plant under the pot condition. Increasing rates of TW significantly increased the dry matter yield of corn plant following wheat from 3.31 t ha(-1) (at control) to 7.89 t ha(-1) (at the TW treatment of 40 t ha(-1)). The (15)N values derived from the (15)N fertiliser decreased with increasing TW application. The average values of N derived from N fertiliser (Ndff) varied from 2.14 to 3.09% at the rates of 20 and 80 kg N ha(-1), respectively. However, N derived from TW (Ndftw) significantly increased from 16.93 to 24.59% (at 20 kg N ha(-1)), and it also increased from 23.06 to 28.15% (at 80 kg N ha(-1)) with increasing TW applications from 20 to 40 t ha(-1), respectively.

  14. Efecto de las condiciones de crecimiento y composición del medio de cultivo sobre la producción de bacteriocina de Enterococcus mundtii Tw56

    Directory of Open Access Journals (Sweden)

    Marisol Vallejo

    2014-07-01

    Full Text Available Título en español: Efecto de las condiciones de crecimiento y composición del medio de cultivo sobre la producción de bacteriocina de Enterococcus mundtii Tw56 Título corto: Efecto de las condiciones de crecimiento y composición del medio de cultivo Título en ingles: Effect of growth conditions and culture medium composition on bacteriocin production by Enterococcus mundtii Tw56 Resumen: Enterococcus mundtii Tw56 es una cepa productora de bacteriocina que fue aislada del contenido intestinal de pejerrey (Odontesthes sp.. El objetivo del presente trabajo fue determinar los factores fisicoquímicos y la composición del medio de cultivo para lograr un mayor rendimiento de células viables y producción de bacteriocina. No se observaron cambios en la producción del antimicrobiano cuando la glucosa fue sustituida por fructosa o maltosa en la formulación del medio MRS. Por el contrario, la mayor actividad de las bacteriocinas se obtuvo cuando se utilizó el extracto de carne como fuente única de nitrógeno. Mientras que la máxima biomasa se alcanzó a 35 ºC, las temperaturas óptimas para la producción de bacteriocina se observaron a 25 y30 ºC. El pH inicial óptimo para el crecimiento celular y bioactividad fue 6,5, ambos parámetros disminuyeron cuando la experiencia comenzó a pH 6,0 o 5,5.  La formación de biomasa y la producción de bacteriocina disminuyeron en presencia de cloruro de sodio. La cepa comenzó a producir bacteriocina en la fase exponencial tardía. La actividad aumentó en función de la masa celular y alcanzó el máximo al final de la fase exponencial (12 h. Una disminución de la actividad antimicrobiana se observó en la fase estacionaria (16 h, posiblemente debido a la degradación por enzimas proteolíticas.  Palabras clave: Enterococcus mundtii Tw56, bacteriocina, factores fisicoquímicos, medio de cultivo.  Abstract:  Enterococcus mundtii Tw56 is a bacteriocin-producing strain that was isolated from

  15. Web 2.0: Inherent tensions and evident challenges for education

    DEFF Research Database (Denmark)

    Dohn, Nina Bonderup

    2009-01-01

    In upper tertiary educational programmes around the world, the new Web-mediated communication practices termed Web 2.0 are introduced as learning activities with the goal of facilitating learning through collaborative knowledge construction. The aim of this paper is to point to discrepancies...... in the views of learning, knowledge, and the goals of the practice implicit in Web 2.0 and educational practices and to argue that these discrepancies lead to theoretical tensions and practical challenges when Web 2.0 practices are utilized for educational purposes. The article is structured into four main...... parts: First, Web 2.0 is characterized from a practice perspective. Second, some conceptual discrepancies between the "practice logics" of Web 2.0 and educational practices are identified. Third, the question of transcending the discrepancies is raised through a discussion of related pedagogical...

  16. Web 2.0-Mediated Competence - Implicit Educational Demands on Learners

    DEFF Research Database (Denmark)

    Dohn, Nina Bonderup

    2009-01-01

    The employment of Web 2.0 within higher educational settings has become increasingly popular. Reasons for doing so include student motivation, didactic considerations of facilitating individual and collaborative knowledge construction, and the support Web 2.0 gives the learner in transgressing...... and resituating content and practices between the formal and informal learning settings in which s/he participates. However, introducing Web 2.0-practices into educational settings leads to tensions and challenges in practice because of conceptual tensions between the views of knowledge and learning inherent...... in Web 2.0-practices and in the educational system: Implicit in Web 2.0-practices is a conception of 'knowledge' as, on the one side, process and activity, i.e. as use, evaluation, transformation and reuse of material, and, on the other, the product side, as a distributed attribute of a whole system...

  17. The Effect of Potassium on Growth and Yield of Strawberry (Fragaria Ananassa (Duchesne ex Weston) Duchesne ex Rozier)

    International Nuclear Information System (INIS)

    Bibi, S; Rhaman, I.; Ijaz, F.; Afzal, A.; Khan, M.; Khan, R.

    2016-01-01

    Fragaria ananassa (Duchesne ex Weston) Duchesne ex-Rozier (Strawberry) variety chandler of Agriculture Research Station (ARS) Baffa, Mansehra was evaluated for different growth and yield parameters under five treatments. In this experiment Potassium was used in 5 different treatments of 3 replications (T0 = Control, T1 = 200 g/6.75m/sup 2/, T2 = 400 g/6.75m/sup 2/, T3 = 600 g/6.75m/sup 2/, T4 = 800 g/6.75m/sup 2/). The results showed maximum value under T3 (405g/6.75m/sup 2/) for characteristics like survival percentage (83.54 percent), plant height (32.05 cm), canopy size (13.62 cm), crown diameter (2.73 cm), number of branches (35.83), number of leaves (67.00), leaf length (5.87 cm), root length (3.51 cm), total number of fruits (43.93), days to 50 percent fruiting (233.67), fruit diameter (3.96 cm), fruit weight (411.40g). Moreover, transplanting date (20 Sep, 2013) is suitable to get maximum yield of strawberry variety Chandler. The findings of this experiment showed that great variations in morphological, physical and agronomic traits of strawberry variety and can be utilized to develop high yield and better quality of strawberry. (author)

  18. Comparative study of Ce0.80Sm0.20 Ba0.80Y0.20O3-δ (YB-SDC) electrolyte by various chemical synthesis routes

    Science.gov (United States)

    Tariq, Sana; Marium, Aniqa; Raza, Rizwan; Ashfaq Ahmad, M.; Ajmal Khan, M.; Abbas, Ghazanfar; Waseem Boota, M.; Khalid Imran, S.; Arshad, Sarfraz; Ikram, Muhammad

    2018-03-01

    Solid Oxide Fuel Cells is received a significant attention in recent years due to higher efficiency and fuel flexibility. The one of the main challenge for SOFC is to lower the operating temperature of SOFCs. Therefore, different strategies are used in order to enhance the ionic conduction of electrolyte, which can lower the overall SOFC operating temperature. The present work is focused on this strategy to enhance the electrolytic conductivity. Therefore, the ceria based composite electrolytes Ce0.80Sm0.20B0.80Y0.20O3-δ (YBSDC) are synthesized using three different approaches i.e. co-precipitation (YBSDC-1), sol-gel (YBSDC-2) and ball milling (YBSDC-3). Their crystal structures and surface morphologies are characterized through X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) techniques, respectively. The four-probe technique is employed to measure their dc conductivities in the temperature range (300-700) °C under air atmosphere. The open circuit voltage (OCV) and current are recorded with natural gas as fuel {flow rate kept at 100 ml min-1 at 1 atm pressure} over the temperature range (300-600) °C. The electrolyte (YBSDC-1) prepared by co-precipitation technique is shown better results as compare to other two electrolytes (YBSDC-2 and YBSDC-3). The electrolyte (YBSDC-1) having maximum dc conductivity (0.096 S/cm), peak power density 224 mW cm-2 and OCV 0.94 V at 600 °C. These results show that YBSDC-1electrolyte is potential candidate for low temperature SOFCs.

  19. Efficient chirped-pulse amplification of sub-20 fs laser pulses

    Energy Technology Data Exchange (ETDEWEB)

    Matsuoka, Shinichi; Yamakawa, Koichi [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

    1998-03-01

    We have developed a model for ultrabroadband and ultrashort pulse amplification including the effects of a pulse shaper for regenerative pulse shaping, gain narrowing and gain saturation in the amplifiers. Thin solid etalons are used to control both gain narrowing and gain saturation during amplification. This model has been used to design an optimized Ti:sapphire amplifier system for producing efficiently pulses of < 20-fs duration with approaching peak and average powers of 100 TW and 20 W. (author)

  20. Enjeux communicationnels du Web 2.0 pour les Relations Publiques/Professional and organisational issues of Web 2.0 Public Relations

    Directory of Open Access Journals (Sweden)

    Francine Charest

    2012-12-01

    Full Text Available The Web 2.0, which includes Facebook, Twitter, Youtube and other social medias, is considered as to be one of the strongest communication tools of the early 21st century. TheWeb evolutionhas changed deeply the way Public relations agents operate. In 2009, Charest and Bédard have shown that the Web 2.0 was in fact a reclaim by the internet users of the Web as it was first imagined by Tim Berners-Lee in November 1993 : a tool to exchange and share information. The Web first generation has instead been used by the administrators for dissemination and promotion. Today, in order to appropriate themselves these new medias, PR agents have to findnew business models, even new ways to communicate.RésuméLe Web 2.0, regroupant les Facebook, Twitter, YouTube et autres médias sociaux, est considéré comme l’un des plus puissants outils de communication, en ce début de XX1 siècle. C’est sous l’angle de mutations qu’il induit sur les pratiques des professionnels en relations publiques, qu’il nous intéresse d’étudier les enjeux de l’évolution des usages du Web 2.0. Charest et Bédard ont montré en 2009 que le Web 2.0 était la revanche des internautes qui tentent de se réapproprier le Web tel qu’il avait été conçu par Tim Berners-Lee en novembre 1993, soit comme un outil d’échange et de partage d’information. Il a été clairement montré que la première générationde Web a plutôt été utilisée par les gestionnaires à des fins de diffusion et de promotion. L’appropriation de ces nouveaux médias par les relationnistes passe nécessairement par de nouveaux modèles d’affaires, voire de nouvelles façons de communiquer.

  1. Medicine 2.0: social networking, collaboration, participation, apomediation, and openness.

    Science.gov (United States)

    Eysenbach, Gunther

    2008-08-25

    In a very significant development for eHealth, broad adoption of Web 2.0 technologies and approaches coincides with the more recent emergence of Personal Health Application Platforms and Personally Controlled Health Records such as Google Health, Microsoft HealthVault, and Dossia. "Medicine 2.0" applications, services and tools are defined as Web-based services for health care consumers, caregivers, patients, health professionals, and biomedical researchers, that use Web 2.0 technologies and/or semantic web and virtual reality approaches to enable and facilitate specifically 1) social networking, 2) participation, 3) apomediation, 4) openness and 5) collaboration, within and between these user groups. The Journal of Medical Internet Research (JMIR) publishes a Medicine 2.0 theme issue and sponsors a conference on "How Social Networking and Web 2.0 changes Health, Health Care, Medicine and Biomedical Research", to stimulate and encourage research in these five areas.

  2. Use of Web 2.0 tools by hospital pharmacists.

    Science.gov (United States)

    Bonaga Serrano, B; Aldaz Francés, R; Garrigues Sebastiá, M R; Hernández San Salvador, M

    2014-04-01

    Web 2.0 tools are transforming the pathways health professionals use to communicate among themselves and with their patients so this situation forces a change of mind to implement them. The aim of our study is to assess the state of knowledge of the main Web 2.0 applications and how are used in a sample of hospital pharmacists. The study was carried out through an anonymous survey to all members of the Spanish Society of Hospital Pharmacy (SEFH) by means of a questionnaire sent by the Google Drive® application. After the 3-month study period was completed, collected data were compiled and then analyzed using SPPS v15.0. The response rate was 7.3%, being 70.5% female and 76.3% specialists. The majority of respondents (54.2%) were aged 20 to 35. Pubmed was the main way of accessing published articles. 65.2% of pharmacists knew the term "Web 2.0". 45.3% pharmacists were Twitter users and over 58.9% mainly for professional purposes. Most pharmacists believed that Twitter was a good tool to interact with professionals and patients. 78.7% do not use an agregator, but when used, Google Reader was the most common. Although Web 2.0 applications are gaining mainstream popularity some health professionals may resist using them. In fact, more than a half of surveyed pharmacists referred a lack of knowledge about Web 2.0 tools. It would be positive for pharmacists to use them properly during their professional practice to get the best out of them. Copyright AULA MEDICA EDICIONES 2014. Published by AULA MEDICA. All rights reserved.

  3. Use of Web 2.0 tools by hospital pharmacists

    Directory of Open Access Journals (Sweden)

    B. Bonaga Serrano

    2014-03-01

    Full Text Available Objective: Web 2.0 tools are transforming the pathways health professionals use to communicate among themselves and with their patients so this situation forces a change of mind to implement them. The aim of our study is to assess the state of knowledge of the main Web 2.0 applications and how are used in a sample of hospital pharmacists. Method: The study was carried out through an anonymous survey to all members of the Spanish Society of Hospital Pharmacy (SEFH by means of a questionnaire sent by the Google Drive® application. After the 3-month study period was completed, collected data were compiled and then analyzed using SPPS v15.0. Results: The response rate was 7.3%, being 70.5% female and 76.3% specialists. The majority of respondents (54.2% were aged 20 to 35. Pubmed was the main way of accessing published articles. 65.2% of pharmacists knew the term “Web 2.0”. 45.3% pharmacists were Twitter users and over 58.9% mainly for professional purposes. Most pharmacists believed that Twitter was a good tool to interact with professionals and patients. 78.7% do not use an agregator, but when used, Google Reader was the most common. Conclusion: Although Web 2.0 applications are gaining mainstream popularity some health professionals may resist using them. In fact, more than a half of surveyed pharmacists referred a lack of knowledge about Web 2.0 tools. It would be positive for pharmacists to use them properly during their professional practice to get the best out of them.

  4. Transmission-line-circuit model of an 85-TW, 25-MA pulsed-power accelerator

    OpenAIRE

    B. T. Hutsel; P. A. Corcoran; M. E. Cuneo; M. R. Gomez; M. H. Hess; D. D. Hinshelwood; C. A. Jennings; G. R. Laity; D. C. Lamppa; R. D. McBride; J. K. Moore; A. Myers; D. V. Rose; S. A. Slutz; W. A. Stygar

    2018-01-01

    We have developed a physics-based transmission-line-circuit model of the Z pulsed-power accelerator. The 33-m-diameter Z machine generates a peak electrical power as high as 85 TW, and delivers as much as 25 MA to a physics load. The circuit model is used to design and analyze experiments conducted on Z. The model consists of 36 networks of transmission-line-circuit elements and resistors that represent each of Zs 36 modules. The model of each module includes a Marx generator, intermediate-en...

  5. Number transmission of 0.6 and 0.8MeV electrons in elemental materials

    International Nuclear Information System (INIS)

    Harami, Taikan; Takagaki, Torao; Matsuda, Koji; Nakai, Yohta.

    1975-01-01

    The number transmissions of electrons in Be, Al, Cu and Ag were obtained experimentally for well collimated electron beams of 0.6 and 0.8 MeV. Experimental results of the present work join smoothly to the previous ones of 1.0 MeV to 2.0 MeV electrons. The ratios of extrapolated range Rsub(ex) to true range R 0 give generally minimum values near 1 MeV (approximately 2mc 2 ) as well as the stopping power. An investigation was done for empirical equation of the form eta=exp(-xP/CEsup(m)), where E is the incident electron energy, x, penetration depth, and p, C and m are the parameters determined from experimental data. (author)

  6. SME 2.0: Roadmap towards Web 2.0-Based Open Innovation in SME-Networks - A Case Study Based Research Framework

    Science.gov (United States)

    Lindermann, Nadine; Valcárcel, Sylvia; Schaarschmidt, Mario; von Kortzfleisch, Harald

    Small- and medium sized enterprises (SMEs) are of high social and economic importance since they represent 99% of European enterprises. With regard to their restricted resources, SMEs are facing a limited capacity for innovation to compete with new challenges in a complex and dynamic competitive environment. Given this context, SMEs need to increasingly cooperate to generate innovations on an extended resource base. Our research project focuses on the aspect of open innovation in SME-networks enabled by Web 2.0 applications and referring to innovative solutions of non-competitive daily life problems. Examples are industrial safety, work-life balance issues or pollution control. The project raises the question whether the use of Web 2.0 applications can foster the exchange of creativity and innovative ideas within a network of SMEs and hence catalyze new forms of innovation processes among its participants. Using Web 2.0 applications within SMEs implies consequently breaking down innovation processes to employees’ level and thus systematically opening up a heterogeneous and broader knowledge base to idea generation. In this paper we address first steps on a roadmap towards Web 2.0-based open innovation processes within SME-networks. It presents a general framework for interaction activities leading to open innovation and recommends a regional marketplace as a viable, trust-building driver for further collaborative activities. These findings are based on field research within a specific SME-network in Rhineland-Palatinate Germany, the “WirtschaftsForum Neuwied e.V.”, which consists of roughly 100 heterogeneous SMEs employing about 8,000 workers.

  7. INNOTOUR.COM - en international WEB 2.0 platform for turismeundervisning

    DEFF Research Database (Denmark)

    Liburd, Janne J.; Hjalager, Anne-Mette; Christensen, Inger-Marie F.

    2011-01-01

    Formålet med denne artikel er at viderebringe erfaringerne fra INNOTOUR projektet, der er forankret på Center for Turisme, Innovation og Kultur på Syddansk Universitet. I artiklen diskuteres indledningsvist baggrunden for etablering af den internationale web 2.0 platform, INNOTOUR. Her argumen...... natur er der udfordringer forbundet med så omfattende nytænkning af undervisning og læring. Artiklen indeholder også en perspektivering og diskussion af erfaringerne fra INNOTOUR projektet, herunder håndtering af de ”krav”, som web 2.0 værktøjer og web 2.0 læring stiller til deltagerne samt til...... tilpasning af studieordninger, herunder eksamensbeskrivelser, således at disse afspejler de nye undervisningsformer og web 2.0 filosofien bag læring og viden. Afslutningsvist sammenfattes projektets erfaringer, hvor det påpeges, at web 2.0 læring på mange måder er et opgør med eksisterende praksis på...

  8. HEP Outreach, Inreach, and Web 2.0

    International Nuclear Information System (INIS)

    Goldfarb, Steven

    2011-01-01

    I report on current usage of multimedia and social networking 'Web 2.0' tools for Education and Outreach in high-energy physics, and discuss their potential for internal communication within large worldwide collaborations, such as those of the LHC. Following a brief description of the history of Web 2.0 development, I present a survey of the most popular sites and describe their usage in HEP to disseminate information to students and the general public. I then discuss the potential of certain specific tools, such as document and multimedia sharing sites, for boosting the speed and effectiveness of information exchange within the collaborations. I conclude with a brief discussion of the successes and failures of these tools, and make suggestions for improved usage in the future.

  9. HEP Outreach, Inreach, and Web 2.0

    Science.gov (United States)

    Goldfarb, Steven

    2011-12-01

    I report on current usage of multimedia and social networking "Web 2.0" tools for Education and Outreach in high-energy physics, and discuss their potential for internal communication within large worldwide collaborations, such as those of the LHC. Following a brief description of the history of Web 2.0 development, I present a survey of the most popular sites and describe their usage in HEP to disseminate information to students and the general public. I then discuss the potential of certain specific tools, such as document and multimedia sharing sites, for boosting the speed and effectiveness of information exchange within the collaborations. I conclude with a brief discussion of the successes and failures of these tools, and make suggestions for improved usage in the future.

  10. WEB 2.0 TOOLS FOR SUPPORTING TEACHING

    Directory of Open Access Journals (Sweden)

    Angelos KONSTANTINIDIS

    2013-10-01

    Full Text Available Web 2.0 tools provide enormous opportunities for teaching and learning, yet their application in education is still underdeveloped. What is more, it is no longer possible for teachers to ignore such a technological advance, while they are expected to provide students with opportunities to take control of their learning. However, teachers are still reluctant with technology integration. This paper introduces four Web 2.0 tools; Blogger, StripGenerator, Go!Animate, and Google Forms, that are free and easy to use, in an effort to motivate teachers with low technological skills in integrating them into their instruction practices. The aforementioned tools comprised the curriculum in a blended-learning professional development course for in-service teachers and attracted many favourable comments from the participants.

  11. Change Management Meets Web 2.0

    Science.gov (United States)

    Gale, Doug

    2008-01-01

    Web 2.0 is the term used to describe a group of web-based creativity, information-sharing, and collaboration tools including wikis, blogs, social networks, and folksonomies. The common thread in all of these tools is twofold: They enable collaboration and information sharing, and their impact on higher education has been dramatic. A recent study…

  12. Information Literacy Instruction in the Web 2.0 Library

    Science.gov (United States)

    Humrickhouse, Elizabeth

    2011-01-01

    This paper examines how library educators can implement Web 2.0 tools in their Information Literacy programs to better prepare students for the rigors of academic research. Additionally, this paper looks at transliteracy and constructivism as the most useful teaching methods in a Web 2.0 classroom and attempts to pinpoint specific educational…

  13. Web 2.0. Nettet holder liv i grusomme borgerkrige

    DEFF Research Database (Denmark)

    Schmidt, Søren

    2017-01-01

    The article explains the reasons, timing and character of on-going civil wars in the Middle East. The web 2.0 explains many parts of this.......The article explains the reasons, timing and character of on-going civil wars in the Middle East. The web 2.0 explains many parts of this....

  14. Web 2.0 and competitiveness improvement

    Directory of Open Access Journals (Sweden)

    Bauerová, Danuše

    2011-12-01

    Full Text Available Article shows implementation of A Model of Learning Powered by Technology at university environment. A Positive Digital Identity development on Web2.0 cloud is presented. People are creating their own portfolios - Personal Learning Portfolio and Personal Credit Portfolio. The part of it such proposals are generalizing methodologies to be useful to improve competitiveness of students, pedagogues, scientists but also institutions as well as anybody of lifelong learning activities.

    Este artículo muestra la puesta en marcha de un modelo de aprendizaje potenciado por la tecnología en el entorno de la Universidad. Se presenta un desarrollo de la Identidad Digital Positiva sobre la nube Web2.0. Las personas crean sus propios portafolios –Personal Learning Portfolio y Personal Credit Portfolio. Por otra parte, estas propuestas representan la generalización de metodologías que son útiles para mejorar la competitividad de estudiantes, pedagogos, científicos, pero también de las instituciones, así como de las actividades de aprendizaje a lo largo de la vida.

  15. Comparative study of Ce0.80Sm0.20 Ba0.80Y0.20O3-δ (YB-SDC electrolyte by various chemical synthesis routes

    Directory of Open Access Journals (Sweden)

    Sana Tariq

    2018-03-01

    Full Text Available Solid Oxide Fuel Cells is received a significant attention in recent years due to higher efficiency and fuel flexibility. The one of the main challenge for SOFC is to lower the operating temperature of SOFCs. Therefore, different strategies are used in order to enhance the ionic conduction of electrolyte, which can lower the overall SOFC operating temperature. The present work is focused on this strategy to enhance the electrolytic conductivity. Therefore, the ceria based composite electrolytes Ce0.80Sm0.20B0.80Y0.20O3-δ (YBSDC are synthesized using three different approaches i.e. co-precipitation (YBSDC-1, sol-gel (YBSDC-2 and ball milling (YBSDC-3. Their crystal structures and surface morphologies are characterized through X-ray Diffraction (XRD and Scanning Electron Microscopy (SEM techniques, respectively. The four-probe technique is employed to measure their dc conductivities in the temperature range (300–700 °C under air atmosphere. The open circuit voltage (OCV and current are recorded with natural gas as fuel {flow rate kept at 100 ml min−1 at 1 atm pressure} over the temperature range (300–600 °C.The electrolyte (YBSDC-1 prepared by co-precipitation technique is shown better results as compare to other two electrolytes (YBSDC-2 and YBSDC-3. The electrolyte (YBSDC-1 having maximum dc conductivity (0.096 S/cm, peak power density 224 mW cm−2 and OCV 0.94 V at 600 °C. These results show that YBSDC-1electrolyte is potential candidate for low temperature SOFCs. Keywords: Hydrogen, Energy, Ball milling, Composite, Conductor

  16. 0.20-m (8-in.) primary burner development report

    International Nuclear Information System (INIS)

    Stula, R.T.; Young, D.T.; Rode, J.S.

    1977-12-01

    High-Temperature Gas-Cooled Reactors (HTGRs) utilize graphite-base fuels. Fluidized-bed burners are being employed successfully in the experimental reprocessing of these fuels. The primary fluidized-bed burner is a unit operation in the reprocessing flowsheet in which the graphite moderator is removed. A detailed description of the development status of the 0.20-m (8-in.) diameter primary fluidized-bed burner as of July 1, 1977 is presented. Experimental work to date performed in 0.10; 0.20; and 0.40-m (4, 8, and 16 in.) diameter primary burners has demonstrated the feasibility of the primary burning process and, at the same time, has defined more clearly the areas in which additional experimental work is required. The design and recent operating history of the 0.20-m-diameter burner are discussed, with emphasis placed upon the evolution of the current design and operating philosophy

  17. Preservation of root canal anatomy using self-adjusting file instrumentation with glide path prepared by 20/0.02 hand files versus 20/0.04 rotary files

    Science.gov (United States)

    Jain, Niharika; Pawar, Ajinkya M.; Ukey, Piyush D.; Jain, Prashant K.; Thakur, Bhagyashree; Gupta, Abhishek

    2017-01-01

    Objectives: To compare the relative axis modification and canal concentricity after glide path preparation with 20/0.02 hand K-file (NITIFLEX®) and 20/0.04 rotary file (HyFlex™ CM) with subsequent instrumentation with 1.5 mm self-adjusting file (SAF). Materials and Methods: One hundred and twenty ISO 15, 0.02 taper, Endo Training Blocks (Dentsply Maillefer, Ballaigues, Switzerland) were acquired and randomly divided into following two groups (n = 60): group 1, establishing glide path till 20/0.02 hand K-file (NITIFLEX®) followed by instrumentation with 1.5 mm SAF; and Group 2, establishing glide path till 20/0.04 rotary file (HyFlex™ CM) followed by instrumentation with 1.5 mm SAF. Pre- and post-instrumentation digital images were processed with MATLAB R 2013 software to identify the central axis, and then superimposed using digital imaging software (Picasa 3.0 software, Google Inc., California, USA) taking five landmarks as reference points. Student's t-test for pairwise comparisons was applied with the level of significance set at 0.05. Results: Training blocks instrumented with 20/0.04 rotary file and SAF were associated less deviation in canal axis (at all the five marked points), representing better canal concentricity compared to those, in which glide path was established by 20/0.02 hand K-files followed by SAF instrumentation. Conclusion: Canal geometry is better maintained after SAF instrumentation with a prior glide path established with 20/0.04 rotary file. PMID:28855752

  18. New Parallaxes and a Convergence Analysis for the TW Hya Association

    Science.gov (United States)

    Donaldson, J. K.; Weinberger, A. J.; Gagné, J.; Faherty, J. K.; Boss, A. P.; Keiser, S. A.

    2016-12-01

    The TW Hya Association (TWA) is a nearby stellar association with an age of ˜5-10 Myr. This is an important age for studying the late stages of star and planet formation. We measure the parallaxes of 14 candidate members of TWA. That brings to 38 the total number of individual stars with fully measured kinematics, I.e., proper motion, radial velocity, and parallax, to describe their motions through the Galaxy. We analyze these kinematics to search for convergence to a smaller volume in the past, but we find that the association is never much more compact than it is at present. We show that it is difficult to measure traceback ages for associations such as TWA that have expected velocity dispersions of 1-2 km s-1 with typical measurement uncertainties. We also use our stellar distances and pre-main-sequence evolutionary tracks to find the average age of the association of 7.9 ± 1.0 Myr. Additionally, our parallax measurement of TWA 32 indicates that it should be considered a bona fide member of TWA. Two new candidate members have high membership probabilities, and we assign them TWA numbers: TWA 45 for 2MASS J11592786-4510192 and TWA 46 for 2MASS J12354615-4115531.

  19. Aircraft/Air Traffic Management Functional Analysis Model: Technical Description. 2.0

    Science.gov (United States)

    Etheridge, Melvin; Plugge, Joana; Retina, Nusrat

    1998-01-01

    The Aircraft/Air Traffic Management Functional Analysis Model, Version 2.0 (FAM 2.0), is a discrete event simulation model designed to support analysis of alternative concepts in air traffic management and control. FAM 2.0 was developed by the Logistics Management Institute (LMI) under a National Aeronautics and Space Administration (NASA) contract. This document provides a technical description of FAM 2.0 and its computer files to enable the modeler and programmer to make enhancements or modifications to the model. Those interested in a guide for using the model in analysis should consult the companion document, Aircraft/Air Traffic Management Functional Analysis Model, Version 2.0 Users Manual.

  20. MOLE 2.0: Advanced approach for analysis of biomacromolecular channels

    OpenAIRE

    Sehnal D.; Varekova R.S.; Berka K.; Pravda L.; Navratilova V.; Banas P.; Ionescu C.-M.; Otyepka M.; Koca J.

    2013-01-01

    Background Channels and pores in biomacromolecules (proteins, nucleic acids and their complexes) play significant biological roles, e.g., in molecular recognition and enzyme substrate specificity. Results We present an advanced software tool entitled MOLE 2.0, which has been designed to analyze molecular channels and pores. Benchmark tests against other available software tools showed that MOLE 2.0 is by comparison quicker, more robust and more versatile. As a new feature, MOLE 2.0 estimates ...

  1. TAM 2.0: tool for MicroRNA set analysis.

    Science.gov (United States)

    Li, Jianwei; Han, Xiaofen; Wan, Yanping; Zhang, Shan; Zhao, Yingshu; Fan, Rui; Cui, Qinghua; Zhou, Yuan

    2018-06-06

    With the rapid accumulation of high-throughput microRNA (miRNA) expression profile, the up-to-date resource for analyzing the functional and disease associations of miRNAs is increasingly demanded. We here describe the updated server TAM 2.0 for miRNA set enrichment analysis. Through manual curation of over 9000 papers, a more than two-fold growth of reference miRNA sets has been achieved in comparison with previous TAM, which covers 9945 and 1584 newly collected miRNA-disease and miRNA-function associations, respectively. Moreover, TAM 2.0 allows users not only to test the functional and disease annotations of miRNAs by overrepresentation analysis, but also to compare the input de-regulated miRNAs with those de-regulated in other disease conditions via correlation analysis. Finally, the functions for miRNA set query and result visualization are also enabled in the TAM 2.0 server to facilitate the community. The TAM 2.0 web server is freely accessible at http://www.scse.hebut.edu.cn/tam/ or http://www.lirmed.com/tam2/.

  2. Ebola Virus Persistence in Semen Ex Vivo.

    Science.gov (United States)

    Fischer, Robert J; Judson, Seth; Miazgowicz, Kerri; Bushmaker, Trent; Munster, Vincent J

    2016-02-01

    On March 20, 2015, a case of Ebola virus disease was identified in Liberia that most likely was transmitted through sexual contact. We assessed the efficiency of detecting Ebola virus in semen samples by molecular diagnostics and the stability of Ebola virus in ex vivo semen under simulated tropical conditions.

  3. Room temperature ferromagnetism in Th{sub 1-x}Fe{sub x}O{sub 2-{delta}} (x = 0.0, 0.05, 0.10, 0.15, 0.20 and 0.25) nanoparticles

    Energy Technology Data Exchange (ETDEWEB)

    Jayakumar, O.D. [Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085 (India); Gopalakrishnan, I.K. [Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085 (India)], E-mail: ikgopal@barc.gov.in; Vinu, A. [Nano-Ionics Materials Group, Fuel Cell Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Asthana, A. [Advanced Electron Microscopy Group, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Tyagi, A.K. [Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085 (India)

    2008-08-11

    Nanocrystalline (Th{sub 1-x}Fe{sub x})O{sub 2-{delta}} particles with different Fe concentrations (x = 0.0, 0.05, 0.10, 0.15, 0.20 and 0.25) have been prepared by a gel combustion method. Rietveld refinement analyses of X-ray diffraction data revealed the formation of an impurity free cubic type Th{sub 1-x}Fe{sub x}O{sub 2-{delta}} structure up to x = 0.20. This observation is further confirmed from the detailed studies conducted on 10 at.% Fe doped ThO{sub 2} using high-resolution transmission electron microscopy (HRTEM) imaging and indexing of the selected-area electron diffraction (SAED) patterns. DC magnetization studies as a function field indicate that they are ferromagnetic with Curie temperature (T{sub c}) well above room temperature.

  4. Recent plant studies using Victoria 2.0

    International Nuclear Information System (INIS)

    Bixler, Nathan E.; Gasser, Ronald D.

    2000-01-01

    VICTORIA 2.0 is a mechanistic computer code designed to analyze fission product behavior within the reactor coolant system (RCS) during a severe nuclear reactor accident. It provides detailed predictions of the release of radioactive and nonradioactive materials from the reactor core and transport and deposition of these materials within the RCS and secondary circuits. These predictions account for the chemical and aerosol processes that affect radionuclide behavior. VICTORIA 2.0 was released in early 1999; a new version VICTORIA 2.1, is now under development. The largest improvements in VICTORIA 2.1 are connected with the thermochemical database, which is being revised and expanded following the recommendations of a peer review. Three risk-significant severe accident sequences have recently been investigated using the VICTORIA 2.0 code. The focus here is on how various chemistry options affect the predictions. Additionally, the VICTORIA predictions are compared with ones made using the MELCOR code. The three sequences are a station blackout in a GE BWR and steam generator tube rupture (SGTR) and pump-seal LOCA sequences in a 3-loop Westinghouse PWR. These sequences cover a range of system pressures, from fully depressurized to full system pressure. The chief results of this study are the fission product fractions that are retained in the core, RCS, secondary, and containment and the fractions that are released into the environment

  5. M Stars in the TW Hydra Association: A Chandra Large Program Survey

    Science.gov (United States)

    Punzi, Kristina; Kastner, Joel; Principe, David; Stelzer, Beate; Gorti, Uma; Pascucci, Illaria; Argiroffi, Costanza

    2018-01-01

    We have conducted a Cycle 18 Chandra Large Program survey of very cool members of the $\\sim$ 8 Myr-old TW Hydra Association (TWA) to extend our previous study of the potential connections between M star disks and X-rays (Kastner et al. 2016, AJ, 152, 3) to the extreme low-mass end of the stellar initial mass function. The spectral types of our targets extend down to the M/L borderline. Thus we can further investigate the potential connection between the intense X-ray emission from young, low-mass stars and the lifetimes of their circumstellar planet-forming discs, as well as better constrain the age at which coronal activity declines for stellar masses approaching the H-burning limit of $\\sim$ 0.08 M$_{\\odot}$. We present preliminary results from the Cycle 18 survey, including X-ray detection statistics and measurements of relative X-ray luminosities and coronal (X-ray) temperatures for those TWA stars detected by Chandra. This research is supported by SAO/CXC grant GO7-18002A and NASA Astrophysics Data Analysis program grants NNX12AH37G and NNX16AG13G to RIT.

  6. Reception research 2.0

    DEFF Research Database (Denmark)

    Mathieu, David

    Some might argue that reception analysis is a remnant of the past in an age where “people formerly known as the audience” (Rosen, 2006) are producing and circulating content on a diversity of interactive and participatory media platforms. Far from being the case, reception research must continue......, which appears increasingly complex, multi-formed and integrated to the audience. The original dimensions of Schrøder’s model need to be looked at with reference to both reception and circulation (Jenkins et al., 2013), and to the network that binds participatory media culture. It appears that with media...... 2.0, phenomena which traditionally fell under the labels of interpretation or reception are increasingly taking part in the media text itself. As audiences become textual matters, they contribute to set a new agenda for media research....

  7. 0-d energetics scaling models for Z-pinch-driven hohlraums

    International Nuclear Information System (INIS)

    CUNEO, MICHAEL E.; VESEY, ROGER A.; HAMMER, J.H.; PORTER, JOHN L.

    2000-01-01

    Wire array Z-pinches on the Z accelerator provide the most intense laboratory source of soft x-rays in the world. The unique combination of a highly-Planckian radiation source with high x-ray production efficiency (15% wall plug), large x-ray powers and energies ( >150 TW, ge1 MJ in 7 ns), large characteristic hohlraum volumes (0.5 to >10 cm 3 ), and long pulse-lengths (5 to 20 ns) may make Z-pinches a good match to the requirements for driving high-yield scale ICF capsules with adequate radiation symmetry and margin. The Z-pinch driven hohlraum approach of Hammer and Porter [Phys.Plasmas, 6, 2129(1999)] may provide a conservative and robust solution to the requirements for high yield, and is currently being studied on the Z accelerator. This paper describes a multiple region, 0-d hohlraum energetic model for Z-pinch driven hohlraums in four configurations. The authors observe consistency between the models and the measured x-ray powers and hohlraum wall temperatures to within ±20% in flux, for the four configurations

  8. On Recommending Web 2.0 Tools to Personalise Learning

    Science.gov (United States)

    Juškeviciene, Anita; Kurilovas, Eugenijus

    2014-01-01

    The paper aims to present research results on using Web 2.0 tools for learning personalisation. In the work, personalised Web 2.0 tools selection method is presented. This method takes into account student's learning preferences for content and communication modes tailored to the learning activities with a view to help the learner to quickly and…

  9. Preparing Teachers to Integrate Web 2.0 in School Practice: Toward a Framework for Pedagogy 2.0

    Science.gov (United States)

    Jimoyiannis, Athanassios; Tsiotakis, Panagiotis; Roussinos, Dimitrios; Siorenta, Anastasia

    2013-01-01

    Web 2.0 has captured the interest and the imagination of both educators and researchers while it is expected to exert a significant impact on instruction and learning, in the context of the 21st century education. Hailed as an open collaborative learning space, many questions remain unanswered regarding the appropriate teacher preparation and the…

  10. [Adolescents in Web 2.0: risks and chances ].

    Science.gov (United States)

    Salisch, Maria von

    2014-01-01

    That almost all adolescents possess an individual access to the internet and that they use it every day, lays the foundation for the improved means of self presentation and participation that are known by the notion of Web 2.0. Social networks and other interactive internet formats give rise to new risks like cyber mobbing which is the topic of three contributions. At the same time, Web 2.0 offers chances in the form of online counseling and online therapy that cater to the preferences of media-friendly target group of adolescents.

  11. Birding 2.0: Citizen Science and Effective Monitoring in the Web 2.0 World

    Directory of Open Access Journals (Sweden)

    Yolanda F. Wiersma

    2010-12-01

    Full Text Available The amateur birding community has a long and proud tradition of contributing to bird surveys and bird atlases. Coordinated activities such as Breeding Bird Atlases and the Christmas Bird Count are examples of "citizen science" projects. With the advent of technology, Web 2.0 sites such as eBird have been developed to facilitate online sharing of data and thus increase the potential for real-time monitoring. However, as recently articulated in an editorial in this journal and elsewhere, monitoring is best served when based on a priori hypotheses. Harnessing citizen scientists to collect data following a hypothetico-deductive approach carries challenges. Moreover, the use of citizen science in scientific and monitoring studies has raised issues of data accuracy and quality. These issues are compounded when data collection moves into the Web 2.0 world. An examination of the literature from social geography on the concept of "citizen sensors" and volunteered geographic information (VGI yields thoughtful reflections on the challenges of data quality/data accuracy when applying information from citizen sensors to research and management questions. VGI has been harnessed in a number of contexts, including for environmental and ecological monitoring activities. Here, I argue that conceptualizing a monitoring project as an experiment following the scientific method can further contribute to the use of VGI. I show how principles of experimental design can be applied to monitoring projects to better control for data quality of VGI. This includes suggestions for how citizen sensors can be harnessed to address issues of experimental controls and how to design monitoring projects to increase randomization and replication of sampled data, hence increasing scientific reliability and statistical power.

  12. Bringing Web 2.0 to bioinformatics.

    Science.gov (United States)

    Zhang, Zhang; Cheung, Kei-Hoi; Townsend, Jeffrey P

    2009-01-01

    Enabling deft data integration from numerous, voluminous and heterogeneous data sources is a major bioinformatic challenge. Several approaches have been proposed to address this challenge, including data warehousing and federated databasing. Yet despite the rise of these approaches, integration of data from multiple sources remains problematic and toilsome. These two approaches follow a user-to-computer communication model for data exchange, and do not facilitate a broader concept of data sharing or collaboration among users. In this report, we discuss the potential of Web 2.0 technologies to transcend this model and enhance bioinformatics research. We propose a Web 2.0-based Scientific Social Community (SSC) model for the implementation of these technologies. By establishing a social, collective and collaborative platform for data creation, sharing and integration, we promote a web services-based pipeline featuring web services for computer-to-computer data exchange as users add value. This pipeline aims to simplify data integration and creation, to realize automatic analysis, and to facilitate reuse and sharing of data. SSC can foster collaboration and harness collective intelligence to create and discover new knowledge. In addition to its research potential, we also describe its potential role as an e-learning platform in education. We discuss lessons from information technology, predict the next generation of Web (Web 3.0), and describe its potential impact on the future of bioinformatics studies.

  13. The Enterprise 2.0 Concept: Challenges on Data and Information Security

    Science.gov (United States)

    Silva, Ana; Moreira, Fernando; Varajão, João

    The Web 2.0 wave has "hit" businesses all over the world, with companies taking advantage of the 2.0 concept and new applications stimulating collaboration between employees, and also with external partners (suppliers, contractors, universities, R&D organizations and others). However, the use of Web 2.0 applications inside organizations has created additional security challenges, especially regarding data and information security. Companies need to be aware of these risks when deploying the 2.0 concept and take a proactive approach on security. In this paper are identified and discussed some of the challenges and risks of the use of Web 2.0 tools, namely when it comes to securing companies' intellectual property.

  14. Examining the application of Web 2.0 in medical-related organisations.

    Science.gov (United States)

    Chu, Samuel Kai Wah; Woo, Matsuko; King, Ronnel B; Choi, Stephen; Cheng, Miffy; Koo, Peggy

    2012-03-01

    This study surveyed Web 2.0 application in three types of selected health or medical-related organisations such as university medical libraries, hospitals and non-profit medical-related organisations. Thirty organisations participated in an online survey on the perceived purposes, benefits and difficulties in using Web 2.0. A phone interview was further conducted with eight organisations (26.7%) to collect information on the use of Web 2.0. Data were analysed using both quantitative and qualitative approaches. Results showed that knowledge and information sharing and the provision of a better communication platform were rated as the main purposes of using Web 2.0. Time constraints and low staff engagement were the most highly rated difficulties. In addition, most participants found Web 2.0 to be beneficial to their organisations. Medical-related organisations that adopted Web 2.0 technologies have found them useful, with benefits outweighing the difficulties in the long run. The implications of this study are discussed to help medical-related organisations make decisions regarding the use of Web 2.0 technologies. © 2011 The authors. Health Information and Libraries Journal © 2011 Health Libraries Group.

  15. 15 January 2010 - Vice-Chancellor & Chief Executive C. Snowden, University of Surrey, United Kingdom and Mrs Snowden visiting ALICE exhibition and experimental undeground area with Collabortion Spokesperson J. Schukraft and Beams Department Head P. Collier; Signature of the guest book with CERN Director-General R. Heuer.

    CERN Multimedia

    Maximilien Brice

    2010-01-01

    15 January 2010 - Vice-Chancellor & Chief Executive C. Snowden, University of Surrey, United Kingdom and Mrs Snowden visiting ALICE exhibition and experimental undeground area with Collabortion Spokesperson J. Schukraft and Beams Department Head P. Collier; Signature of the guest book with CERN Director-General R. Heuer.

  16. [Dimensions of Empathy in Ex-Combatants of the Colombian Armed Conflict Using a Standardized Scale].

    Science.gov (United States)

    Pineda, David A; Aguirre-Acevedo, Daniel Camilo; Trujillo, Natalia; Valencia, Ana María; Pareja, Ángela; Tobón, Carlos; Velilla, Lina; Ibáñez, Agustín

    2013-03-01

    Empathy is one of the main concepts of in social neurosciences. It is defined as a trait with multiple dimensions allowing individuals to place themselves in the emotional states of others. Colombia has an irregular, internal and long-lasting armed conflict which has been increasing its cruelty levels. to assess the empathy dimensions of 285 ex-combatants from the internal Colombian conflict, using the Interpersonal Reactivity Index(IRI) in Spanish. METHODOLOGY AND SUBJECTS: a sample of 285 male ex-combatants, 241 (84, 6%) males: 85,3% paramilitaries, and 14,7% guerillas. The 28 Item IRI questionnaires were administered. 3 exploratory factor analyses (EFA) were performed. Confirmatory factor analyses (CFA) were developed using structural equation procedures. The first EFA obtained 9 factors (KMO=0,74, variance 54,7% and internal consistency (IC): 0,22 - 0,63). The second EFA produced 20 items with burdens above 0,4 and showed a 6-factor structure (KMO=0,70, variance 50,3%, IC: 0,37 - 0,63). The third EFA forced the 4 original IRI dimensions (KMO=0,74, variance 33,77, IC: 0,44 - 0,77. CFAs showed goodness of adjustment indexes adequate for the three models. The 4-factor model obtained the lowest value, while the 6-factor model obtained the highest. The 4- factor model showed the best IC. The Spanish IRI administered to ex-combatants of the Colombian conflict has possible structures of 4, 6 and 9 factors. The best adjustment was for the 6-fctor. The 4-factor model exhibited the best IC. Copyright © 2013 Asociación Colombiana de Psiquiatría. Publicado por Elsevier España. All rights reserved.

  17. Læremiddelevaluering af web 2.0 læremidler

    DEFF Research Database (Denmark)

    Falkesgaard Slot, Marie; Gissel, Stig Toke

    2014-01-01

    Kapitlet etablerer og afprøver et analyseapparat, der bidrager til at højne kvaliteten af de valg, som foretages af web 2.0-læremidler i danskfaget. I kapitlet fokuseres der på læremiddel evaluering af nogle af de funktioner, som typisk tilskrives web 2.0-værktøjerne, ligesom der gives eksempler på...

  18. User's Manual Frac-Explore 2.0

    Energy Technology Data Exchange (ETDEWEB)

    George, S.A.; Guo, Genliang

    1999-03-09

    FRAC-EXPLORE 2.0, a new computer software package for oil and gas exploration using surface lineament and fracture analysis. FRAC-EXPLORE 2.0 provides a suite of tools for analyzing the characteristics and patterns of surface lineaments and fractures, as well as other surface geological features. These tools help identify priority areas of potential subsurface oil and gas traps. The package can be used in a frontier basin to initially screen the priority locations for further seismic and/or geochemical surveys. It can also be used in a mature basin to help delineate additional oil and gas reservoirs.

  19. Role of xanthine oxidoreductase in the anti-thrombotic effects of nitrite in rats in vivo.

    Science.gov (United States)

    Kramkowski, K; Leszczynska, A; Przyborowski, K; Kaminski, T; Rykaczewska, U; Sitek, B; Zakrzewska, A; Proniewski, B; Smolenski, R T; Chabielska, E; Buczko, W; Chlopicki, S

    2016-01-01

    The mechanisms underlying nitrite-induced effects on thrombosis and hemostasis in vivo are not clear. The goal of the work described here was to investigate the role of xanthine oxidoreductase (XOR) in the anti-platelet and anti-thrombotic activities of nitrite in rats in vivo. Arterial thrombosis was induced electrically in rats with renovascular hypertension by partial ligation of the left renal artery. Sodium nitrite (NaNO2, 0.17 mmol/kg twice daily for 3 days, p.o) was administered with or without one of the XOR-inhibitors: allopurinol (ALLO) and febuxostat (FEB) (100 and 5 mg/kg, p.o., for 3 days). Nitrite treatment (0.17 mmol/kg), which was associated with a significant increase in NOHb, nitrite/nitrate plasma concentration, resulted in a substantial decrease in thrombus weight (TW) (0.48 ± 0.03 mg vs. vehicle [VEH] 0.88 ± 0.08 mg, p < 0.001) without a significant hypotensive effect. The anti-thrombotic effect of nitrite was partially reversed by FEB (TW = 0.63 ± 0.06 mg, p < 0.05 vs. nitrites), but not by ALLO (TW = 0.43 ± 0.02 mg). In turn, profound anti-platelet effect of nitrite measured ex vivo using collagen-induced whole-blood platelet aggregation (70.5 ± 7.1% vs. VEH 100 ± 4.5%, p < 0.05) and dynamic thromboxaneB2 generation was fully reversed by both XOR-inhibitors. In addition, nitrite decreased plasminogen activator inhibitor-1 concentration (0.47 ± 0.13 ng/ml vs. VEH 0.62 ± 0.04 ng/ml, p < 0.05) and FEB/ALLO reversed this effect. In vitro the anti-platelet effect of nitrite (1 mM) was reversed by FEB (0.1 mM) under hypoxia (0.5%O2) and normoxia (20%O2). Nitrite treatment had no effect on coagulation parameters. In conclusion, the nitrite-induced anti-platelet effect in rats in vivo is mediated by XOR, but XOR does not fully account for the anti-thrombotic effects of nitrite.

  20. L'impact du web 2.0 sur les organisations

    CERN Document Server

    TRAN, Sébastien; Hasnaoui, Amir

    2013-01-01

    Cet ouvrage permet de présenter le « 2.0 » selon quatre points de vue complémentaires - la plateforme, le many-to-many, le communautaire et l'émergent. Les auteurs ont essayé de démontrer comment les « univers gouvernés », s'ils adoptaient les pratiques du 2.0 au service des objectifs qu'ils visent, doivent intégrer une « fabrique » différente de l'intelligence collective au travers de groupes émergents, et comment ils doivent s'adapter à la compétition et à l'interopérabilité et maîtriser le langage de la collaboration étendue. Les auteurs s'attachent également à montrer comment le web 2.0 po

  1. Exact deconstruction of the 6D (2,0) theory

    Science.gov (United States)

    Hayling, J.; Papageorgakis, C.; Pomoni, E.; Rodríguez-Gómez, D.

    2017-06-01

    The dimensional-deconstruction prescription of Arkani-Hamed, Cohen, Kaplan, Karch and Motl provides a mechanism for recovering the A-type (2,0) theories on T 2, starting from a four-dimensional N=2 circular-quiver theory. We put this conjecture to the test using two exact-counting arguments: in the decompactification limit, we compare the Higgs-branch Hilbert series of the 4D N=2 quiver to the "half-BPS" limit of the (2,0) superconformal index. We also compare the full partition function for the 4D quiver on S 4 to the (2,0) partition function on S 4 × T 2. In both cases we find exact agreement. The partition function calculation sets up a dictionary between exact results in 4D and 6D.

  2. Web 2.0 Socail Network Sites And Facebook Marketing

    Directory of Open Access Journals (Sweden)

    Andreas Chang

    2011-11-01

    Full Text Available The use of Web 2.0 and Social Network Sites (SNS has become an amazing phenomenon. In fact, one of the fastest-growing arenas of the World Wide Web is the space of so-called social networking sites. Face book, Tweeter, MySpace and other Social Network Sites have huge population of users. Almost seven hundred million people use Facebook, and hundreds of million others use other social networking sites. More and more advertisers switch their marketing budget to these SNS. This study contributes to our understanding of the Web 2.0 and the use of social networking websites by examining available literature. It seeks to understand what Web 2.0 and SNS mean, the trends, its functions and how they can be leveraged for marketing purposes.

  3. Exact deconstruction of the 6D (2,0) theory

    International Nuclear Information System (INIS)

    Hayling, J.; Papageorgakis, C.; Pomoni, E.; Rodriguez-Gomez, D.

    2017-06-01

    The dimensional-deconstruction prescription of Arkani-Hamed, Cohen, Kaplan, Karch and Motl provides a mechanism for recovering the A-type (2,0) theories on T 2 , starting from a four-dimensional N=2 circular-quiver theory. We put this conjecture to the test using two exact-counting arguments: In the decompactification limit, we compare the Higgs-branch Hilbert series of the 4D N=2 quiver to the ''half-BPS'' limit of the (2,0) superconformal index. We also compare the full partition function for the 4D quiver on S 4 to the (2,0) partition function on S 4 x T 2 . In both cases we find exact agreement. The partition function calculation sets up a dictionary between exact results in 4D and 6D.

  4. Inteligência Organizacional e Competitiva e a Web 2.0

    Directory of Open Access Journals (Sweden)

    Kira Tarapanoff

    2013-11-01

    Full Text Available New possibilities are analyzed for Competitive and Organizational Intelligence under Web 2.0. The underlying theoretical approach is based on Information Science, Information and Knowledge Management, Competitive Intelligence and related disciplines, in an integrated manner. The thesis that is defended in this essay considers that the basic elements that constitute what is understood by competitive and organizational intelligence 2.0 are the adequate use of collective intelligence accessible at the Web 2.0 in order to create and share knowledge; associated with the emerging concepts of the corporate world such as sustainability.

  5. Short-term outcomes after EX-PRESS implantation versus trabeculectomy alone in patients with neovascular glaucoma

    Directory of Open Access Journals (Sweden)

    Shinohara Y

    2017-12-01

    Full Text Available Yoichiro Shinohara, Hideo Akiyama, Mikiya Magori, Shoji Kishi Department of Ophthalmology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan Background: The purpose of this study was to investigate postoperative clinical outcomes in patients with neovascular glaucoma (NVG who underwent trabeculectomy or EX-PRESS implantation and to identify predictors of successful EX-PRESS implantation. Methods: The study designed as a retrospective observational analysis and was set in a single tertiary center. Eighty-nine patients (89 eyes with NVG, were treated using trabeculectomy alone (Trab group; n=39 or EX-PRESS implantation (EX group; n=50. All patients with a history of glaucoma surgery were excluded. The main outcome measures were postoperative intraocular pressure (IOP, visual acuity (VA, number of medications, complications, additional therapy, and success rate. Results: The mean follow-up duration was 4.6 months in the Trab group and 4.2 months in the EX group. There was no significant difference in IOP between the groups except at 1-month follow-up (P=0.045. The number of patients with early postoperative hypotony, a shallow anterior chamber, hyphema, or anterior chamber irrigation was significantly lower in the EX group than in the Trab group (P=0.016, 0.008, 0.019, and 0.014, respectively. The other outcomes, ie, VA, number of medications, and success rate, were similar between the two groups. In the EX group, the success rate was significantly lower in 15 patients with a history of vitrectomy compared to that in 35 patients without a history of vitrectomy (P=0.047. Conclusion: Implantation of an EX-PRESS device may be more effective and safer than trabeculectomy alone in patients with NVG. However, a history of vitrectomy may affect the surgical success rate when using EX-PRESS. Keywords: trabeculectomy, EX-PRESS, neovascular glaucoma, surgery, tube shunt

  6. EX1605L3 Dive20 Ancillary Data Collection including reports, kmls, spreadsheets, and data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Standard suite of ancillary data files generated through a scripting process following an ROV dive on NOAA Ship Okeanos Explorer during EX1605L3: CAPSTONE CNMI &...

  7. ESTRATEGIAS DE COLABORACIÓN 2.0 PARA LA TRANSFERENCIA DE CONOCIMIENTO

    Directory of Open Access Journals (Sweden)

    Lillyana María Giraldo Marín

    2013-12-01

    Full Text Available En este artículo de investigación se analiza la colaboración 2.0, donde los empleados pueden participar e interactuar de manera individual y colectiva. La Enterprise 2.0 pone en práctica nuevos modelos de colaboración en la organización los cuales permiten a los empleados establecer escenarios donde pueden mejorar o crear nuevos productos y servicios desde estrategias colaborativas que los conduzcan al logro de un objetivo colectivo. Por lo tanto, se realiza una revisión del concepto de colaboración 2.0 en la organización y como resultado se definen algunas estrategias de colaboración 2.0 en las organizaciones que usan intensamente las tecnologías y los servicios de la Web 2.0 como apoyo a sus estrategias de negocio.

  8. Mapping Commercial Web 2.0 Worlds: Towards a New Critical Ontogenesis

    Directory of Open Access Journals (Sweden)

    Kenneth Werbin

    2009-01-01

    Full Text Available At the 2007 International Communication Association Conference, Web 2.0 was highlighted as an emergent topic of research with a keynote panel entitled 'What's so Significant about Social Networking? Web 2.0 and its Critical Potentials'. One of the thought-provoking moments during the panel was the juxtaposition of two very different and at first, contradictory theoretical approaches to the relationships between Web 2.0 and user-generated content. While Henry Jenkins focused on the democratic potential of online participatory culture as enabling new modes of knowledge production, Titziana Terranova argued for a post-Marxist perspective on Web 2.0 as a site of cultural colonization and expansion of new forms of capitalization on culture, affect and knowledge. The juxtaposition of these two very different critical approaches did not simply rehash the old divide between cultural theory, particularly active audience theory, and post-Marxist critical theory; rather, this debate over Web 2.0 suggested new possibilities for the synthesis and continued development of both sets of critiques. In other words, the event reinforced our belief that corporate colonization arguments do not provide an entirely adequate model for understanding Web 2.0. After all, commercial Web 2.0 spaces such as Facebook, YouTube and MySpace are important sites of cultural exchange and political discussion, in part because they almost entirely rely on user-generated content to exist.

  9. Exact deconstruction of the 6D (2,0) theory

    Energy Technology Data Exchange (ETDEWEB)

    Hayling, J.; Papageorgakis, C. [Queen Mary Univ. of London (United Kingdom). CRST and School of Physics and Astronomy; Pomoni, E. [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Theory Group; Rodriguez-Gomez, D. [Oviedo Univ. (Spain). Dept. of Physics

    2017-06-15

    The dimensional-deconstruction prescription of Arkani-Hamed, Cohen, Kaplan, Karch and Motl provides a mechanism for recovering the A-type (2,0) theories on T{sup 2}, starting from a four-dimensional N=2 circular-quiver theory. We put this conjecture to the test using two exact-counting arguments: In the decompactification limit, we compare the Higgs-branch Hilbert series of the 4D N=2 quiver to the ''half-BPS'' limit of the (2,0) superconformal index. We also compare the full partition function for the 4D quiver on S{sup 4} to the (2,0) partition function on S{sup 4} x T{sup 2}. In both cases we find exact agreement. The partition function calculation sets up a dictionary between exact results in 4D and 6D.

  10. Bibliotecas de Nueva Generación (Biblioteca 2.0)

    OpenAIRE

    González-Fernández-Villavicencio, Nieves

    2007-01-01

    This article study the definition of "Library 2.0" and describes implications for all types of libraries inside and outside Spain, with special attention to Seville University library. The paper focusses on the practice of librarianship, specifically addressing how Web 2.0 technologies such as synchronous messaging and streaming media, blogs, wikis, social networks, tagging, RSS feeds, and mashups are changing how libraries provide access to their collections and user support for that access.

  11. Theoretical Foundations of the Web: Cognition, Communication, and Co-Operation. Towards an Understanding of Web 1.0, 2.0, 3.0

    Directory of Open Access Journals (Sweden)

    Robert Bichler

    2010-02-01

    Full Text Available Currently, there is much talk of Web 2.0 and Social Software. A common understanding of these notions is not yet in existence. The question of what makes Social Software social has thus far also remained unacknowledged. In this paper we provide a theoretical understanding of these notions by outlining a model of the Web as a techno-social system that enhances human cognition towards communication and co-operation. According to this understanding, we identify three qualities of the Web, namely Web 1.0 as a Web of cognition, Web 2.0 as a Web of human communication, and Web 3.0 as a Web of co-operation. We use the terms Web 1.0, Web 2.0, Web 3.0 not in a technical sense, but for describing and characterizing the social dynamics and information processes that are part of the Internet.

  12. MR imaging of intracerebral hemorrhage lesions: Comparison of 2.0 T and 0.5 T images

    International Nuclear Information System (INIS)

    Han, Moon Hee; Chang, Kee Hyun

    1990-01-01

    Seventeen patients with intracerebral hemorrhage lesions were examined with magnetic resonance imaging at both 2.0 T and 0.5 T, in order to evaluate the capability of detecting and characterizing the hemorrhagic lesions at each field strength and to compare the signal intensities of the hemorrhages between both field strengths. The intervals between two imagings were within 2 hours in all patients except for 4 patients with subacute hematoma and occult cerebrovascular malformations in whom the intervals were 1 to 4 days. At each field strength, both T1 and T2-weighted spin echo(SE) images were obtained in all patients. All the hemorrhagic lesions were readily detected and characterized as hemorrhagic lesions at 2.0 T, whereas one lesion of chronic hemorrhage was not detected, and three lesions(one acute hemorrhage, one chronic hemorrhage and one occult cerebrovascular malformation) could not be characterized as hemorrhagic lesions at 0.5 T. There were statistically significant differences in signal intensity of the hematomas between 2.0 T and 0.5 T on proton density-weighted and T2-weighted images in cases of acute intracerebral hematomas: the hematomas seen as low intensity at 2.0 T appeared iso-or slightly high at 0.5 T. In conclusion, the intracerebral hematomas may be difficult to detect and to characterize with SE technique at 0.5 T, and then the gradient echo technique may be useful at 0.5 T

  13. Indico 2.0 - the whole Iceberg

    Science.gov (United States)

    Mönnich, A.; Avilés, A.; Ferreira, P.; Kolodziejski, M.; Trichopoulos, I.; Vessaz, F.

    2017-10-01

    The last two years have been atypical to the Indico community, as the development team undertook an extensive rewrite of the application and deployed no less than 9 major releases of the system. Users at CERN have had the opportunity to experience the results of this ambitious endeavour. They have only seen, however, the “tip of the iceberg“. Indico 2.0 employs a completely new stack, leveraging open source packages in order to provide a web application that is not only more feature-rich but, more importantly, builds on a solid foundation of modern technologies and patterns. But this milestone represents not only a complete change in technology - it is also an important step in terms of user experience and usability that opens the way to many potential improvements in the years to come. In this article, we will describe the technology and all the different dimensions in which Indico 2.0 constitutes an evolution vis-à-vis its predecessor and what it can provide to users and server administrators alike. We will go over all major system features and explain what has changed, the reasoning behind the most significant modifications and the new possibilities that they pave the way for.

  14. Epoxy composites based on inexpensive tire waste filler

    Science.gov (United States)

    Ahmetli, Gulnare; Gungor, Ahmet; Kocaman, Suheyla

    2014-05-01

    Tire waste (TW) was recycled as raw material for the preparation of DGEBA-type epoxy composite materials. The effects of filler amount and epoxy type on the mechanical properties of the composites were investigated. Tensile strength and Young's modulus of the composites with NPEL were generally higher than composites with NPEF. The appropriate mass level for TW in both type composites was found to be 20 wt%. The equilibrium water sorption of NPEL/TW and NPEF/TW composites for 14-day immersion was determined as 0.10 % and 0.21 %, respectively. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used for characterization of the composites.

  15. Epoxy composites based on inexpensive tire waste filler

    International Nuclear Information System (INIS)

    Ahmetli, Gulnare; Gungor, Ahmet; Kocaman, Suheyla

    2014-01-01

    Tire waste (TW) was recycled as raw material for the preparation of DGEBA-type epoxy composite materials. The effects of filler amount and epoxy type on the mechanical properties of the composites were investigated. Tensile strength and Young’s modulus of the composites with NPEL were generally higher than composites with NPEF. The appropriate mass level for TW in both type composites was found to be 20 wt%. The equilibrium water sorption of NPEL/TW and NPEF/TW composites for 14-day immersion was determined as 0.10 % and 0.21 %, respectively. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used for characterization of the composites

  16. The Web 2.0 as Marketing Tool: Opportunities for SMEs

    NARCIS (Netherlands)

    Constantinides, Efthymios

    2008-01-01

    The new generation of Internet applications widely known as Social Media or Web 2.0 offers corporations a whole range of opportunities for improving their marketing efficiency and internal operations. Web 2.0 applications have already become part of the daily life of an increasing number of

  17. Patch testing with 2.0% (0.60 mg/cm2) formaldehyde instead of 1.0% (0.30 mg/cm2) detects significantly more contact allerg

    DEFF Research Database (Denmark)

    Pontén, Ann; Aalto-Korte, Kristiina; Agner, Tove

    2013-01-01

    .To validate earlier patch test results for comparison of 1% (wt/vol) and 2% (wt/vol) formaldehyde in water, and to investigate co-reactivity with quaternium-15. Materials and methods.In 12 dermatology clinics, 3591 patients were routinely patch tested simultaneously with 2.0% (wt/vol) (0.60 mg/cm(2) ) and 1.......0% (wt/vol) (0.30 mg/cm(2) ) formaldehyde. Micropipettes were used for delivering the exact dosage of the allergen. Results.Significantly more patients reacted to 2.0% formaldehyde than to 1.0% (3.4% versus 1.8%, p

  18. D-D nuclear fusion processes induced in polyethylene foams by TW Laser-generated plasma

    Directory of Open Access Journals (Sweden)

    Torrisi L.

    2015-01-01

    Full Text Available Deuterium-Deuterium fusion processes were generated by focusing the 3 TW PALS Laser on solid deuterated polyethylene targets placed in vacuum. Deuterium ion acceleration of the order of 4 MeV was obtained using laser irradiance Iλ2 ∼ 5 × 1016 W μm2/cm2 on the target. Thin and thick targets, at low and high density, were irradiated and plasma properties were monitored “on line” and “off line”. The ion emission from plasma was monitored with Thomson Parabola Spectrometer, track detectors and ion collectors. Fast semiconductor detectors based on SiC and fast plastic scintillators, both employed in time-of-flight configuration, have permitted to detect the characteristic 3.0 MeV protons and 2.45 MeV neutrons emission from the nuclear fusion reactions. From massive absorbent targets we have evaluated the neutron flux by varying from negligible values up to about 5 × 107 neutrons per laser shot in the case of foams targets, indicating a reaction rate of the order of 108 fusion events per laser shot using “advanced targets”.

  19. Opportunities and challenges of Web 2.0 for vaccination decisions.

    Science.gov (United States)

    Betsch, Cornelia; Brewer, Noel T; Brocard, Pauline; Davies, Patrick; Gaissmaier, Wolfgang; Haase, Niels; Leask, Julie; Renkewitz, Frank; Renner, Britta; Reyna, Valerie F; Rossmann, Constanze; Sachse, Katharina; Schachinger, Alexander; Siegrist, Michael; Stryk, Marybelle

    2012-05-28

    A growing number of people use the Internet to obtain health information, including information about vaccines. Websites that allow and promote interaction among users are an increasingly popular source of health information. Users of such so-called Web 2.0 applications (e.g. social media), while still in the minority, represent a growing proportion of online communicators, including vocal and active anti-vaccination groups as well as public health communicators. In this paper, the authors: define Web 2.0 and examine how it may influence vaccination decisions; discuss how anti-vaccination movements use Web 2.0 as well as the challenges Web 2.0 holds for public health communicators; describe the types of information used in these different settings; introduce the theoretical background that can be used to design effective vaccination communication in a Web 2.0 environment; make recommendations for practice and pose open questions for future research. The authors conclude that, as a result of the Internet and Web 2.0, private and public concerns surrounding vaccinations have the potential to virally spread across the globe in a quick, efficient and vivid manner. Web 2.0 may influence vaccination decisions by delivering information that alters the perceived personal risk of vaccine-preventable diseases or vaccination side-effects. It appears useful for public health officials to put effort into increasing the effectiveness of existing communication by implementing interactive, customized communication. A key step to providing successful public health communication is to identify those who are particularly vulnerable to finding and using unreliable and misleading information. Thus, it appears worthwhile that public health websites strive to be easy to find, easy to use, attractive in its presentation and readily provide the information, support and advice that the searcher is looking for. This holds especially when less knowledgeable individuals are in need of reliable

  20. Intelligent Libraries and Apomediators: Distinguishing between Library 3.0 and Library 2.0

    Science.gov (United States)

    Kwanya, Tom; Stilwell, Christine; Underwood, Peter G.

    2013-01-01

    Using the "point oh" naming system for developments in librarianship is attracting debate about its appropriateness, basis and syntax and the meaning and potential of Library 2.0. Now a new term, Library 3.0, has emerged. Is there is any significant difference between the two models? Using documentary analysis to explore the terms, the…

  1. FENDL/MG-2.0 and FENDL/MC-2.0. The processed cross-section libraries for neutron photon transport calculations. Version 1, March 1997. Summary documentation

    International Nuclear Information System (INIS)

    Wienke, H.; Herman, M.

    1998-01-01

    Evaluated neutron reaction data and photon-atom interaction cross sections for materials contained in the general purpose Fusion Evaluated Nuclear Data Library (FENDL/E2.0) have been processed with the NJOY code system into VITAMIN-J multigroup structure, for use in discrete-ordinates transport codes, and into continuous energy ACE format, for use in the Monte Carlo transport code MCNP. This document summarizes the resulting data libraries FENDL/MG-2.0 version 1 and FENDL/MC-2.0 version 1. The data are available costfree from the IAEA Nuclear Data Section online or on magnetic tape. (author)

  2. [Orthogonal design method to optimize rehabilitation prescription of pulsed electric field at Jiaji (EX-B 2) points for spinal cord injury].

    Science.gov (United States)

    Zhang, Lifeng; Zhang, Hui; Wang, Lin; Liu, Yanyan; Sun, Xianyue; Li, Lingyan; Hou, Jing

    2015-01-01

    By using orthogonal design method to optimnize prescription of pulsed electric field at Jiaji (EX- B 2) points for spinal cord injury (SCI). Fifty six patients of SCI were selected, in which 36 cases were divided into orthogonal design trial and 20 cases were into clinical verification. With 36 patients who received orthogonal design trial, Frankel grading scale was used as observation index to screen optimal prescription of pulsed electric field. Pulse frequency (factor A) included low frequency (factor A(I), 10(2) Hz). moderate frequency (factor A(II), 10(4) Hz) and high frequency (factor A(III), 10(3) Hz); pulse amplitude (factor B) included 0-30 V (factor B ), 0-60 V (factor B(II)) and 0-90 V (factor B(III)); pulse width (factor C) included 0.1 ms (factor C(I)). 0.6 ms (factor C(II)) and 0.9 ms (factor C(III)); acupuncture time (factor D) included one month (DI), three months (D(II)) and five months (D(III)). Twenty patients were used for clinical efficacy observation and the effects of screened optimal pre scription of pulsed electric field at Jiaji (EX-B 2) points combined with regular rehabilitation training on spasm se- verity, score of sensory and motor functions, Barthel index and Frankel score were observed. (1) As results of orthogonal design trial, the optimal prescription was A(III) B(III), C(I), D(III), which were high frequency (10(3) Hz), 0-90 V of pulse amplitude, 0.4 ms of pulse width and 5 months of treatment time. (2) As results of 20 patient clinical verification, Ashworth score, tendon reflex and clonus were all significantly improved (Ppulsed electric field at Jiaji (EX-B 2) points for spinal cord injury is high frequency (10& Hz), 0-90 V of pulse amplitude, 0.4 ms of pulse width and 5 months of treatment time. The optimal prescription of pulsed electric field at Jiaji (EX-B 2) points combined with regular rehabilitation could obviously improve spasm severity, enhance senso- ry and motor functions, and ameliorate activity of daily life and

  3. Revisiting TW Hydrae in light of new astrometric data

    Science.gov (United States)

    Teixeira, R.; Ducourant, C.; Galli, P. A. B.; Le Campion, J. F.; Zuckerman, B.; Krone-Martins, A. G. O.; Chauvin, G.; Song, I.

    2014-10-01

    Our efforts in the present work focused mainly on refining and improving the previous description and understanding of the stellar association TW Hydrae (TWA) including a very detailed membership analysis and its dynamical and evolutionary age.To achieve our objectives in a fully reliable way we take advantage of our own astrometric measurements (Ducourant et al. 2013) performed with NTT/EFOSC2 - ESO (La Silla - Chile) spread over three years (2007 - 2010) and of those published in the literature.A very detailed membership analysis based on the convergent point strategy as developed by our team (Galli et al. 2012, 2013) allowed us to define a consistent kinematic group containing 31 stars among the 44 proposed as TWA member in the literature. Assuming that our sample of stars may be contaminated by non-members and to get rid of the particular influence of each star we applied a Jacknife resampling technique generating 2000 random lists of 13 stars taken from our 16 stars and calculated for each the epoch of convergence when the radius is minimum. The mean of the epochs obtained and the dispersion about the mean give a dynamical age of 7.5± 0.7 Myr for the association that is in good agreement with the previous traceback age (De La Reza et al. 2006). We also estimated age for TWA moving group members from pre-main sequence evolutionary models (Siess et al. 2000) and find a mean age of 7.4± 1.2 Myr. These results show that the dynamical age of the association obtained via the traceback technique and the average age derived from theoretical evolutionary models are in good agreement.

  4. The Chandra Source Catalog 2.0: Estimating Source Fluxes

    Science.gov (United States)

    Primini, Francis Anthony; Allen, Christopher E.; Miller, Joseph; Anderson, Craig S.; Budynkiewicz, Jamie A.; Burke, Douglas; Chen, Judy C.; Civano, Francesca Maria; D'Abrusco, Raffaele; Doe, Stephen M.; Evans, Ian N.; Evans, Janet D.; Fabbiano, Giuseppina; Gibbs, Danny G., II; Glotfelty, Kenny J.; Graessle, Dale E.; Grier, John D.; Hain, Roger; Hall, Diane M.; Harbo, Peter N.; Houck, John C.; Lauer, Jennifer L.; Laurino, Omar; Lee, Nicholas P.; Martínez-Galarza, Juan Rafael; McCollough, Michael L.; McDowell, Jonathan C.; McLaughlin, Warren; Morgan, Douglas L.; Mossman, Amy E.; Nguyen, Dan T.; Nichols, Joy S.; Nowak, Michael A.; Paxson, Charles; Plummer, David A.; Rots, Arnold H.; Siemiginowska, Aneta; Sundheim, Beth A.; Tibbetts, Michael; Van Stone, David W.; Zografou, Panagoula

    2018-01-01

    The Second Chandra Source Catalog (CSC2.0) will provide information on approximately 316,000 point or compact extended x-ray sources, derived from over 10,000 ACIS and HRC-I imaging observations available in the public archive at the end of 2014. As in the previous catalog release (CSC1.1), fluxes for these sources will be determined separately from source detection, using a Bayesian formalism that accounts for background, spatial resolution effects, and contamination from nearby sources. However, the CSC2.0 procedure differs from that used in CSC1.1 in three important aspects. First, for sources in crowded regions in which photometric apertures overlap, fluxes are determined jointly, using an extension of the CSC1.1 algorithm, as discussed in Primini & Kashyap (2014ApJ...796…24P). Second, an MCMC procedure is used to estimate marginalized posterior probability distributions for source fluxes. Finally, for sources observed in multiple observations, a Bayesian Blocks algorithm (Scargle, et al. 2013ApJ...764..167S) is used to group observations into blocks of constant source flux.In this poster we present details of the CSC2.0 photometry algorithms and illustrate their performance in actual CSC2.0 datasets.This work has been supported by NASA under contract NAS 8-03060 to the Smithsonian Astrophysical Observatory for operation of the Chandra X-ray Center.

  5. Internet, salud pública 2.0 y complejidad

    Directory of Open Access Journals (Sweden)

    Rodolfo Rodríguez

    2014-12-01

    Full Text Available Al día de hoy, Internet ha modificado el mundo y desde su incursión comercial a principios de la década de los noventa del siglo XX, el mundo no volvió a ser el mismo. El impacto de Internet ha sido monumental e históricamente pocos inventos en la historia de la humanidad han modificado de tal forma la vida del ser humano. Sin embargo, Internet es mucho más que unos computadores conectados y unas páginas web a las cuales acceder. Adicionalmente, algunas reglas de la naturaleza para células y especies también rigen para Internet. La World Wide Web y fenómenos que habitan en ella como la salud pública 2.0 son más que una red de sitios web conectados por hiperenlaces. La Web 2.0 pertenece a una de esas inteligencias colectivas donde así como en los enjambres, el concepto de autoorganización es fundamental. La nueva revolución científica aporta diferentes conceptos para intentar comprender las dinámicas de la World Wide Web y con ello entender desde otra perspectiva fenómenos complejos como la salud pública 2.0

  6. Measurement of single top production in the tW channel and search for s channel in pp collisions

    CERN Document Server

    Merola, Mario

    2015-01-01

    Measurements of single top quark production in the tW and s channels in pp collisions are presented, based on data collected in 2012 at a centre-of-mass energy of 8 TeV. In the tW channel a top quark is produced in association with a W boson. The experimental signature is similar to top pair production, and there is interference at higher orders between the two processes. The measurement is perfomed using final states in which the associated W boson as well as the one originating from the top quark decay leptonically. Multivariate methods are used to extract the cross section and the result is compared with current standard model theory predictions. Multivariatetechniques are also adopted in the search for s-channel single top quark production inorder to discriminate the very small signal from the huge contribution of background processes. In both analyses the signal contribution is determined together with the background estimation by performing a maximum-likelihood fit to the Boosted Decision Trees discrimi...

  7. Atlas Basemaps in Web 2.0 Epoch

    Science.gov (United States)

    Chabaniuk, V.; Dyshlyk, O.

    2016-06-01

    The authors have analyzed their experience of the production of various Electronic Atlases (EA) and Atlas Information Systems (AtIS) of so-called "classical type". These EA/AtIS have been implemented in the past decade in the Web 1.0 architecture (e.g., National Atlas of Ukraine, Atlas of radioactive contamination of Ukraine, and others). One of the main distinguishing features of these atlases was their static nature - the end user could not change the content of EA/AtIS. Base maps are very important element of any EA/AtIS. In classical type EA/AtIS they were static datasets, which consisted of two parts: the topographic data of a fixed scale and data of the administrative-territorial division of Ukraine. It is important to note that the technique of topographic data production was based on the use of direct channels of topographic entity observation (such as aerial photography) for the selected scale. Changes in the information technology of the past half-decade are characterized by the advent of the "Web 2.0 epoch". Due to this, in cartography appeared such phenomena as, for example, "neo-cartography" and various mapping platforms like OpenStreetMap. These changes have forced developers of EA/AtIS to use new atlas basemaps. Our approach is described in the article. The phenomenon of neo-cartography and/or Web 2.0 cartography are analysed by authors using previously developed Conceptual framework of EA/AtIS. This framework logically explains the cartographic phenomena relations of three formations: Web 1.0, Web 1.0x1.0 and Web 2.0. Atlas basemaps of the Web 2.0 epoch are integrated information systems. We use several ways to integrate separate atlas basemaps into the information system - by building: weak integrated information system, structured system and meta-system. This integrated information system consists of several basemaps and falls under the definition of "big data". In real projects it is already used the basemaps of three strata: Conceptual

  8. ATLAS BASEMAPS IN WEB 2.0 EPOCH

    Directory of Open Access Journals (Sweden)

    V. Chabaniuk

    2016-06-01

    Full Text Available The authors have analyzed their experience of the production of various Electronic Atlases (EA and Atlas Information Systems (AtIS of so-called "classical type". These EA/AtIS have been implemented in the past decade in the Web 1.0 architecture (e.g., National Atlas of Ukraine, Atlas of radioactive contamination of Ukraine, and others. One of the main distinguishing features of these atlases was their static nature - the end user could not change the content of EA/AtIS. Base maps are very important element of any EA/AtIS. In classical type EA/AtIS they were static datasets, which consisted of two parts: the topographic data of a fixed scale and data of the administrative-territorial division of Ukraine. It is important to note that the technique of topographic data production was based on the use of direct channels of topographic entity observation (such as aerial photography for the selected scale. Changes in the information technology of the past half-decade are characterized by the advent of the “Web 2.0 epoch”. Due to this, in cartography appeared such phenomena as, for example, "neo-cartography" and various mapping platforms like OpenStreetMap. These changes have forced developers of EA/AtIS to use new atlas basemaps. Our approach is described in the article. The phenomenon of neo-cartography and/or Web 2.0 cartography are analysed by authors using previously developed Conceptual framework of EA/AtIS. This framework logically explains the cartographic phenomena relations of three formations: Web 1.0, Web 1.0x1.0 and Web 2.0. Atlas basemaps of the Web 2.0 epoch are integrated information systems. We use several ways to integrate separate atlas basemaps into the information system – by building: weak integrated information system, structured system and meta-system. This integrated information system consists of several basemaps and falls under the definition of "big data". In real projects it is already used the basemaps of three strata

  9. Public communication of science 2.0

    OpenAIRE

    Peters, Hans Peter; Dunwoody, Sharon; Allgaier, Joachim; Lo, Yin-Yueh; Brossard, Dominique

    2014-01-01

    he communication between scientists and the public is changing. Major drivers of this change are the rapid evolution of the Internet, now in its web 2.0 version with an abundance of video‐sharing websites, blogging platforms and social networks; the ubiquity of mobile devices; and the merging of individual and public communication. The new infrastructures allow nearly instantaneous access to information and make it much easier for communicators—both professionals and laypersons—to directly ad...

  10. Evidence for non-self-similarity of microearthquakes recorded at a Taiwan borehole seismometer array

    Science.gov (United States)

    Lin, Yen-Yu; Ma, Kuo-Fong; Kanamori, Hiroo; Song, Teh-Ru Alex; Lapusta, Nadia; Tsai, Victor C.

    2016-08-01

    We investigate the relationship between seismic moment M0 and source duration tw of microearthquakes by using high-quality seismic data recorded with a vertical borehole array installed in central Taiwan. We apply a waveform cross-correlation method to the three-component records and identify several event clusters with high waveform similarity, with event magnitudes ranging from 0.3 to 2.0. Three clusters—Clusters A, B and C—contain 11, 8 and 6 events with similar waveforms, respectively. To determine how M0 scales with tw, we remove path effects by using a path-averaged Q. The results indicate a nearly constant tw for events within each cluster, regardless of M0, with mean values of tw being 0.058, 0.056 and 0.034 s for Clusters A, B and C, respectively. Constant tw, independent of M0, violates the commonly used scaling relation {t_w} ∝ M_0^{1/3}. This constant duration may arise either because all events in a cluster are hosted on the same isolated seismogenic patch, or because the events are driven by external factors of constant duration, such as fluid injections into the fault zone. It may also be related to the earthquake nucleation size.

  11. How to Use Web 2.0 and Social Networking Sites Securely

    CERN Document Server

    Team, ITG Research

    2009-01-01

    Given the widespread use of Web 2.0 technologies and their impact in terms of the number and types of incidents and the cost of them, controlling Web 2.0 risks needs to be a high priority for all organisations. This pocket guide provides recommendations for organisations that will help them ensure that their employees are using Web 2.0 sites in a secure manner, and that their personal and confidential corporate data is protected.

  12. [Surgeon 2.0: the challenge is on the Web].

    Science.gov (United States)

    Belda Lozano, Ricardo; Ferrer Márquez, Manuel; García Torrecillas, Juan Manuel; Alvarez García, Antonio; Reina Duarte, Angel

    2013-01-01

    Numerous articles and opinions have been published in the last few years on how the Internet is changing clinical practice. In this article we focus on describing 2 aspects that we believe are fundamental in the web 2.0 and Medicine-Surgery inter-relationship: a) web 2.0 conceptualisation and its differences with other pre-existing tools, and b) a description of some of the tools that from a medical-surgical view could be of major interest to the professionals, the patients, and interaction between both. The time has arrived to board train 2.0, where the channels of communication between the professionals, and between them and the patients, are improving disease situations daily, to improve learning through contact with other physicians and surgeons, at the same time providing an excellent resource for maintaining health and to know the disease and its treatment. Copyright © 2012 AEC. Published by Elsevier Espana. All rights reserved.

  13. Pilots 2.0: DIRAC pilots for all the skies

    CERN Document Server

    Stagni, F; McNab, A; Luzzi, C

    2015-01-01

    In the last few years, new types of computing infrastructures, such as IAAS (Infrastructure as a Service) and IAAC (Infrastructure as a Client), gained popularity. New resources may come as part of pledged resources, while others are opportunistic. Most of these new infrastructures are based on virtualization techniques. Meanwhile, some concepts, such as distributed queues, lost appeal, while still supporting a vast amount of resources. Virtual Organizations are therefore facing heterogeneity of the available resources and the use of an Interware software like DIRAC to hide the diversity of underlying resources has become essential. The DIRAC WMS is based on the concept of pilot jobs that was introduced back in 2004. A pilot is what creates the possibility to run jobs on a worker node. Within DIRAC, we developed a new generation of pilot jobs, that we dubbed Pilots 2.0. Pilots 2.0 are not tied to a specific infrastructure; rather they are generic, fully configurable and extendible pilots. A Pilot 2.0 can be s...

  14. VOSpace: a Prototype for Grid 2.0

    Science.gov (United States)

    Graham, M. J.; Morris, D.; Rixon, G.

    2007-10-01

    As Grid 1.0 was characterized by distributed computation, so Grid 2.0 will be characterized by distributed data and the infrastructure needed to support and exploit it: the emerging success of Amazon S3 is already testimony to this. VOSpace is the IVOA interface standard for accessing distributed data. Although the base definition (VOSpace 1.0) only relates to flat, unconnected data stores, subsequent versions will add additional layers of functionality. In this paper, we consider how incorporating popular web concepts such as folksonomies (tagging), social networking, and data-spaces could lead to a much richer data environment than provided by a traditional collection of networked data stores.

  15. AFCI-2.0 Neutron Cross Section Covariance Library

    Energy Technology Data Exchange (ETDEWEB)

    Herman, M.; Herman, M; Oblozinsky, P.; Mattoon, C.M.; Pigni, M.; Hoblit, S.; Mughabghab, S.F.; Sonzogni, A.; Talou, P.; Chadwick, M.B.; Hale, G.M.; Kahler, A.C.; Kawano, T.; Little, R.C.; Yount, P.G.

    2011-03-01

    The cross section covariance library has been under development by BNL-LANL collaborative effort over the last three years. The project builds on two covariance libraries developed earlier, with considerable input from BNL and LANL. In 2006, international effort under WPEC Subgroup 26 produced BOLNA covariance library by putting together data, often preliminary, from various sources for most important materials for nuclear reactor technology. This was followed in 2007 by collaborative effort of four US national laboratories to produce covariances, often of modest quality - hence the name low-fidelity, for virtually complete set of materials included in ENDF/B-VII.0. The present project is focusing on covariances of 4-5 major reaction channels for 110 materials of importance for power reactors. The work started under Global Nuclear Energy Partnership (GNEP) in 2008, which changed to Advanced Fuel Cycle Initiative (AFCI) in 2009. With the 2011 release the name has changed to the Covariance Multigroup Matrix for Advanced Reactor Applications (COMMARA) version 2.0. The primary purpose of the library is to provide covariances for AFCI data adjustment project, which is focusing on the needs of fast advanced burner reactors. Responsibility of BNL was defined as developing covariances for structural materials and fission products, management of the library and coordination of the work; LANL responsibility was defined as covariances for light nuclei and actinides. The COMMARA-2.0 covariance library has been developed by BNL-LANL collaboration for Advanced Fuel Cycle Initiative applications over the period of three years, 2008-2010. It contains covariances for 110 materials relevant to fast reactor R&D. The library is to be used together with the ENDF/B-VII.0 central values of the latest official release of US files of evaluated neutron cross sections. COMMARA-2.0 library contains neutron cross section covariances for 12 light nuclei (coolants and moderators), 78 structural

  16. AFCI-2.0 Neutron Cross Section Covariance Library

    International Nuclear Information System (INIS)

    Herman, M.; Oblozinsky, P.; Mattoon, C.M.; Pigni, M.; Hoblit, S.; Mughabghab, S.F.; Sonzogni, A.; Talou, P.; Chadwick, M.B.; Hale, G.M.; Kahler, A.C.; Kawano, T.; Little, R.C.; Yount, P.G.

    2011-01-01

    The cross section covariance library has been under development by BNL-LANL collaborative effort over the last three years. The project builds on two covariance libraries developed earlier, with considerable input from BNL and LANL. In 2006, international effort under WPEC Subgroup 26 produced BOLNA covariance library by putting together data, often preliminary, from various sources for most important materials for nuclear reactor technology. This was followed in 2007 by collaborative effort of four US national laboratories to produce covariances, often of modest quality - hence the name low-fidelity, for virtually complete set of materials included in ENDF/B-VII.0. The present project is focusing on covariances of 4-5 major reaction channels for 110 materials of importance for power reactors. The work started under Global Nuclear Energy Partnership (GNEP) in 2008, which changed to Advanced Fuel Cycle Initiative (AFCI) in 2009. With the 2011 release the name has changed to the Covariance Multigroup Matrix for Advanced Reactor Applications (COMMARA) version 2.0. The primary purpose of the library is to provide covariances for AFCI data adjustment project, which is focusing on the needs of fast advanced burner reactors. Responsibility of BNL was defined as developing covariances for structural materials and fission products, management of the library and coordination of the work; LANL responsibility was defined as covariances for light nuclei and actinides. The COMMARA-2.0 covariance library has been developed by BNL-LANL collaboration for Advanced Fuel Cycle Initiative applications over the period of three years, 2008-2010. It contains covariances for 110 materials relevant to fast reactor R and D. The library is to be used together with the ENDF/B-VII.0 central values of the latest official release of US files of evaluated neutron cross sections. COMMARA-2.0 library contains neutron cross section covariances for 12 light nuclei (coolants and moderators), 78

  17. Integrating Web 2.0-Based Informal Learning with Workplace Training

    Science.gov (United States)

    Zhao, Fang; Kemp, Linzi J.

    2012-01-01

    Informal learning takes place in the workplace through connection and collaboration mediated by Web 2.0 applications. However, little research has yet been published that explores informal learning and how to integrate it with workplace training. We aim to address this research gap by developing a conceptual Web 2.0-based workplace learning and…

  18. The 0.5-2.22 micrometer Scattered Light Spectrum of the Disk around TW Hya: Detection of a Partially Filled Disk Gap at 80 AU*

    Science.gov (United States)

    Debes, John H.; Jang-Condell, Hannah; Weinberger, Alycia J.; Roberge, Aki; Schneider, Glenn

    2013-01-01

    We present a 0.5-2.2 micrometer scattered light spectrum of the circumstellar disk around TW Hya from a combination of spatially resolved Hubble Space Telescope STIS spectroscopy and NICMOS coronagraphic images of the disk. We investigate the morphology of the disk at distances greater than 40 AU over this wide range of wavelengths, and identify the presence of a depression in surface brightness at approximately 80 AU that could be caused by a gap in the disk. Additionally, we quantify the surface brightness, azimuthal symmetry, and spectral character of the disk as a function of radius. Our analysis shows that the scattering efficiency of the dust is largely neutral to blue over the observed wavelengths. We model the disk as a steady a-disk with an ad hoc gap structure. The thermal properties of the disk are selfconsistently calculated using a three-dimensional radiative transfer code that uses ray tracing to model the heating of the disk interior and scattered light images. We find a good fit to the data over a wide range of distances from the star if we use a model disk with a partially filled gap of 30% depth at 80 AU and with a self-similar truncation knee at 100 AU. The origin of the gap is unclear, but it could arise from a transition in the nature of the disk's dust composition or the presence of a planetary companion. Based on scalings to previous hydrodynamic simulations of gap-opening criteria for embedded proto-planets, we estimate that a planetary companion forming the gap could have a mass between 6 and 28 solar mass.

  19. Web 2.0 and Nigerian Academic Librarians

    Science.gov (United States)

    Adekunmisi, Sowemimo Ronke; Odunewu, Abiodun Olusegun

    2016-01-01

    Web 2.0 applications to library services are aimed at enhancing the provision of relevant and cost-effective information resources for quality education and research. Despite the richness of these web applications and their enormous impact on library and information services as recorded in the developed world, Nigerian academic libraries are yet…

  20. ReCourse Learning Design Editor 2.0

    NARCIS (Netherlands)

    Beauvoir, Phillip; Sharples, Paul; Griffiths, Dai; Miao, Yongwu

    2009-01-01

    ReCourse is an Eclipse Rich Client Platform application. A number of plug-ins are included, enabling users to author QTI compliant tests, link to services, upload to repositories, and publish and populate Units of Learning. New features in version 2.0 include support for IMS LD levels B & C, and a

  1. Web 2.0 applications in medicine: trends and topics in the literature.

    Science.gov (United States)

    Boudry, Christophe

    2015-04-01

    The World Wide Web has changed research habits, and these changes were further expanded when "Web 2.0" became popular in 2005. Bibliometrics is a helpful tool used for describing patterns of publication, for interpreting progression over time, and the geographical distribution of research in a given field. Few studies employing bibliometrics, however, have been carried out on the correlative nature of scientific literature and Web 2.0. The aim of this bibliometric analysis was to provide an overview of Web 2.0 implications in the biomedical literature. The objectives were to assess the growth rate of literature, key journals, authors, and country contributions, and to evaluate whether the various Web 2.0 applications were expressed within this biomedical literature, and if so, how. A specific query with keywords chosen to be representative of Web 2.0 applications was built for the PubMed database. Articles related to Web 2.0 were downloaded in Extensible Markup Language (XML) and were processed through developed hypertext preprocessor (PHP) scripts, then imported to Microsoft Excel 2010 for data processing. A total of 1347 articles were included in this study. The number of articles related to Web 2.0 has been increasing from 2002 to 2012 (average annual growth rate was 106.3% with a maximum of 333% in 2005). The United States was by far the predominant country for authors, with 514 articles (54.0%; 514/952). The second and third most productive countries were the United Kingdom and Australia, with 87 (9.1%; 87/952) and 44 articles (4.6%; 44/952), respectively. Distribution of number of articles per author showed that the core population of researchers working on Web 2.0 in the medical field could be estimated at approximately 75. In total, 614 journals were identified during this analysis. Using Bradford's law, 27 core journals were identified, among which three (Studies in Health Technology and Informatics, Journal of Medical Internet Research, and Nucleic Acids

  2. Capitalizing on Web 2.0 in the Social Studies Context

    Science.gov (United States)

    Holcomb, Lori B.; Beal, Candy M.

    2010-01-01

    This paper focuses primarily on the integration of Web 2.0 technologies into social studies education. It documents how various Web 2.0 tools can be utilized in the social studies context to support and enhance teaching and learning. For the purposes of focusing on one specific topic, global connections at the middle school level will be the…

  3. MOOCs 2.0: THE SOCIAL ERA OF EDUCATION

    Directory of Open Access Journals (Sweden)

    Arda SOYLEV

    2017-04-01

    Full Text Available The improvements in the Internet technology led an evolution in education. Some students’ lives have changed since 2012 when the MOOCs gained popularity among the academia. The students now take courses from the top universities all around the world without time limitations and they even earn credits for their courses. They are able to discuss lecture topics not only with their instructors in the class but also with thousands of other online students and can get just-in-time help regarding to their questions from teaching assistants. These are some of the practices from the new era of MOOCs called “social MOOCs” or MOOC 2.0. The concepts of collaboration, blended learning and TAs are the new consequences. In this paper, we review the problems and the current solutions associated with MOOC 1.0 era. In the light of these, we analyze the MOOC 2.0 era and discuss its present and possible future affects to our lives.

  4. Leadership 2.0 in Action: a Journey from Knowledge Management to

    Directory of Open Access Journals (Sweden)

    Bonnie Cheuk

    2011-06-01

    Full Text Available Leadership 2.0 is a set of alternative management values and practices driven by a set of coherent assumptions about the nature of human communication. In this paper, the authors argue that Leadership 2.0 is critical to make Web2.0 work. This paper is informed by Dervin’s Sense-Making Methodology (SMM as an approach to design knowledge sharing platform incorporating Web2.0 features which allow user-generated content and have a stronger emphasis on collaboration and interaction amongst users. SMM is a philosophically derived approach which allows knowledge management (KM researchers and practitioners to more fully understand and listen to user’s needs so as to inform the design of dialogic KM practices and systems to promote knowledge sharing. This paper presents a “Safety Moment” project to illustrate how SMM has been applied to inform the design of a Web2.0 enabled ‘knowledging’ application in Environmental Resources Management (ERM, the world’s largest all-environmental consulting firm. The project discussed has been implemented since January 2008 as part of ERM’s commitment to improve Health & Safety Performance to ensure all ERM employees, contractors and clients are safe at work. The use of SMM informed Web2.0 application has correlated with increased staff satisfaction, increased company reputation and reduced risks.

  5. From web 2.0 to learning games

    DEFF Research Database (Denmark)

    Duus Henriksen, Thomas

    2011-01-01

    a game-based learning process that made active use of the participants’ current knowledge, both on leadership and on the context they were to lead. The solution developed for doing so was based on some of the ideas from web 2.0, by which the web-page or game merely provides a structure that allows...

  6. Web 2.0 Tools for Supporting Teaching

    Science.gov (United States)

    Konstantinidis, Angelos; Theodostadou, Dimitra; Pappos, Christos

    2013-01-01

    Web 2.0 tools provide enormous opportunities for teaching and learning, yet their application in education is still underdeveloped. What is more, it is no longer possible for teachers to ignore such a technological advance, while they are expected to provide students with opportunities to take control of their learning. However, teachers are still…

  7. The Lovelace 2.0 Test of Artificial Creativity and Intelligence

    OpenAIRE

    Riedl, Mark O.

    2014-01-01

    Observing that the creation of certain types of artistic artifacts necessitate intelligence, we present the Lovelace 2.0 Test of creativity as an alternative to the Turing Test as a means of determining whether an agent is intelligent. The Lovelace 2.0 Test builds off prior tests of creativity and additionally provides a means of directly comparing the relative intelligence of different agents.

  8. The Chandra Source Catalog 2.0: Calibrations

    Science.gov (United States)

    Graessle, Dale E.; Evans, Ian N.; Rots, Arnold H.; Allen, Christopher E.; Anderson, Craig S.; Budynkiewicz, Jamie A.; Burke, Douglas; Chen, Judy C.; Civano, Francesca Maria; D'Abrusco, Raffaele; Doe, Stephen M.; Evans, Janet D.; Fabbiano, Giuseppina; Gibbs, Danny G., II; Glotfelty, Kenny J.; Grier, John D.; Hain, Roger; Hall, Diane M.; Harbo, Peter N.; Houck, John C.; Lauer, Jennifer L.; Laurino, Omar; Lee, Nicholas P.; Martínez-Galarza, Juan Rafael; McCollough, Michael L.; McDowell, Jonathan C.; Miller, Joseph; McLaughlin, Warren; Morgan, Douglas L.; Mossman, Amy E.; Nguyen, Dan T.; Nichols, Joy S.; Nowak, Michael A.; Paxson, Charles; Plummer, David A.; Primini, Francis Anthony; Siemiginowska, Aneta; Sundheim, Beth A.; Tibbetts, Michael; Van Stone, David W.; Zografou, Panagoula

    2018-01-01

    Among the many enhancements implemented for the release of Chandra Source Catalog (CSC) 2.0 are improvements in the processing calibration database (CalDB). We have included a thorough overhaul of the CalDB software used in the processing. The software system upgrade, called "CalDB version 4," allows for a more rational and consistent specification of flight configurations and calibration boundary conditions. Numerous improvements in the specific calibrations applied have also been added. Chandra's radiometric and detector response calibrations vary considerably with time, detector operating temperature, and position on the detector. The CalDB has been enhanced to provide the best calibrations possible to each observation over the fifteen-year period included in CSC 2.0. Calibration updates include an improved ACIS contamination model, as well as updated time-varying gain (i.e., photon energy) and quantum efficiency maps for ACIS and HRC-I. Additionally, improved corrections for the ACIS quantum efficiency losses due to CCD charge transfer inefficiency (CTI) have been added for each of the ten ACIS detectors. These CTI corrections are now time and temperature-dependent, allowing ACIS to maintain a 0.3% energy calibration accuracy over the 0.5-7.0 keV range for any ACIS source in the catalog. Radiometric calibration (effective area) accuracy is estimated at ~4% over that range. We include a few examples where improvements in the Chandra CalDB allow for improved data reduction and modeling for the new CSC.This work has been supported by NASA under contract NAS 8-03060 to the Smithsonian Astrophysical Observatory for operation of the Chandra X-ray Center.

  9. High energy gain electron beam acceleration by 100TW laser

    International Nuclear Information System (INIS)

    Kotaki, Hideyuki; Kando, Masaki; Kondo, Shuji; Hosokai, Tomonao; Kanazawa, Shuhei; Yokoyama, Takashi; Matoba, Toru; Nakajima, Kazuhisa

    2001-01-01

    A laser wakefield acceleration experiment using a 100TW laser is planed at JAERI-Kansai. High quality and short pulse electron beams are necessary to accelerate the electron beam by the laser. Electron beam - laser synchronization is also necessary. A microtron with a photocathode rf-gun was prepared as a high quality electron injector. The quantum efficiency (QE) of the photocathode of 2x10 -5 was obtained. A charge of 100pC from the microtron was measured. The emittance and pulse width of the electron beam was 6π mm-mrad and 10ps, respectively. In order to produce a short pulse electron beam, and to synchronize between the electron beam and the laser pulse, an inverse free electron laser (IFEL) is planned. One of problems of LWFA is the short acceleration length. In order to overcome the problem, a Z-pinch plasma waveguide will be prepared as a laser wakefield acceleration tube for 1 GeV acceleration. (author)

  10. UQTk version 2.0 user manual

    Energy Technology Data Exchange (ETDEWEB)

    Debusschere, Bert J. [Sandia National Lab. (SNL-CA), Livermore, CA (United States); Sargsyan, Khachik [Sandia National Lab. (SNL-CA), Livermore, CA (United States); Safta, Cosmin [Sandia National Lab. (SNL-CA), Livermore, CA (United States)

    2013-10-01

    The UQ Toolkit (UQTk) is a collection of libraries and tools for the quantification of uncertainty in numerical model predictions. Version 2.0 ffers intrusive and non-intrusive methods for propagating input uncertainties through computational models, tools for sensitivity analysis, methods for sparse surrogate construction, and Bayesian inference tools for inferring parameters from experimental data. This manual discusses the download and installation process for UQTk, provides pointers to the UQ methods used in the toolkit, and describes some of the examples provided with the toolkit.

  11. QuakeML 2.0: Recent developments

    Science.gov (United States)

    Euchner, Fabian; Kästli, Philipp; Heiniger, Lukas; Saul, Joachim; Schorlemmer, Danijel; Clinton, John

    2016-04-01

    QuakeML is a community-backed data model for seismic event parameter description. Its current version 1.2, released in 2013, has become the gold standard for parametric data dissemination at seismological data centers, and has been adopted as an FDSN standard. It is supported by several popular software products and data services, such as FDSN event web services, QuakePy, and SeisComP3. Work on the successor version 2.0 is under way since 2015. The scope of QuakeML has been expanded beyond event parameter description. Thanks to a modular architecture, many thematic packages have been added, which cover peak ground motion, site and station characterization, hydraulic parameters of borehole injection processes, and macroseismics. The first three packages can be considered near final and implementations of program codes and SQL databases are in productive use at various institutions. A public community review process has been initiated in order to turn them into community-approved standards. The most recent addition is a package for single station quake location, which allows a detailed probabilistic description of event parameters recorded at a single station. This package adds some information elements such as angle of incidence, frequency-dependent phase picks, and dispersion relations. The package containing common data types has been extended with a generic type for probability density functions. While on Earth, single station methods are niche applications, they are of prominent interest in planetary seismology, e.g., the NASA InSight mission to Mars. So far, QuakeML is lacking a description of seismic instrumentation (inventory). There are two existing standards of younger age (FDSN StationXML and SeisComP3 Inventory XML). We discuss their respective strengths, differences, and how they could be combined into an inventory package for QuakeML, thus allowing full interoperability with other QuakeML data types. QuakeML is accompanied by QuakePy, a Python package

  12. Using Web 2.0 technologies to enhance evidence-based medical information.

    Science.gov (United States)

    Metzger, Miriam J; Flanagin, Andrew J

    2011-01-01

    This article invokes research on information seeking and evaluation to address how providers of evidence-based medical information can use Web 2.0 technologies to increase access to, enliven users' experiences with, and enrich the quality of the information available. In an ideal scenario, evidence-based medical information can take appropriate advantage of community intelligence spawned by Web 2.0 technologies, resulting in the ideal combination of scientifically sound, high-quality information that is imbued with experiential insights from a multitude of individuals. To achieve this goal, the authors argue that people will engage with information that they can access easily, and that they perceive as (a) relevant to their information-seeking goals and (b) credible. The authors suggest the utility of Web 2.0 technologies for engaging stakeholders with evidence-based medical information through these mechanisms, and the degree to which the information provided can and should be trusted. Last, the authors discuss potential problems with Web 2.0 information in relation to decision making in health contexts, and they conclude with specific and practical recommendations for the dissemination of evidence-based health information via Web 2.0 technologies.

  13. Education 2.0 -- how has social media and Web 2.0 been integrated into medical education? A systematical literature review.

    Science.gov (United States)

    Hollinderbäumer, Anke; Hartz, Tobias; Uckert, Frank

    2013-01-01

    Present-day students have grown up with considerable knowledge concerning multi-media. The communication modes they use are faster, more spontaneous, and independent of place and time. These new web-based forms of information and communication are used by students, educators, and patients in various ways. Universities which have already used these tools report many positive effects on the learning behaviour of the students. In a systematic literature review, we summarized the manner in which the integration of Social Media and Web 2.0 into education has taken place. A systematic literature search covering the last 5 years using MeSH terms was carried out via PubMed. Among the 20 chosen publications, there was only one German publication. Most of the publications are from the US and Great Britain. The latest publications report on the concrete usage of the tools in education, including social networking, podcasts, blogs, wikis, YouTube, Twitter and Skype. The integration of Web 2.0 and Social Media is the modern form of self-determined learning. It stimulates reflection and actively integrates the students in the construction of their knowledge. With these new tools, the students acquire skills which they need in both their social and professional lives.

  14. Possibility of gas sensor based on C_2_0 molecular devices

    International Nuclear Information System (INIS)

    Zhao, Wenkai; Yang, Chuanlu; Zou, Dongqing; Sun, Zhaopeng; Ji, Guomin

    2017-01-01

    We theoretically investigate the possibility of diatomic gas detection (NO, CO, O_2) by making use of the transport properties of the C_2_0 molecular junctions. The calculations are performed by using nonequilibrium Green's function (NEGF) formalism in combination with density functional theory (DFT). In this work, we systematically study the most stable adsorption structural configurations, adsorption energy, and the transport properties on C_2_0 molecular junctions with these diatomic gas molecules. It is found that NO and O_2 gas molecule can be detected selectively. We suggest its possibility of nanosensors for highly sensitive and selective based on C_2_0 molecular junction systems. - Highlights: • The most favorable adsorption site is investigated. • The mechanism of gas sensors is revealed. • NO and O_2 gas molecules can be detected by C_2_0 selectively.

  15. Web 2.0 Technologies in Companies: Attitudes of B&H Managers

    Directory of Open Access Journals (Sweden)

    Mirela Mabić

    2017-03-01

    Full Text Available Objective of the study was to investigate what managers think about the impact of Web 2.0 technologies on business operations. The empirical research was conducted among top and middle managers in companies in Bosnia and Herzegovina during May and June 2015. The results show that, although all respondents do not use these technologies, they have a relatively positive opinion on the application of Web 2.0 technologies in business. According to their opinion, Web 2.0 technologies make the most important contribution to data and information sharing in company and have a significant impact on the quality of communication, both internal and external. These results encourage further research on the application of Web 2.0 technologies in business and the use of all the advantages and benefits they can provide to someone actively using them.

  16. Bibliotecas 2.0: concepto, herramientas y usos prácticos

    Directory of Open Access Journals (Sweden)

    Alicia Camarot

    2014-02-01

    Full Text Available Se presenta el alcance del término Web social o 2.0 y su extensión a la denominada Biblioteca 2.0, se describen las herramientas que la integran y se proporcionan ejemplos de su implementación en bibliotecas de Uruguay. También se destaca la importancia de la actitud del profesional bibliotecólogo en este contexto.

  17. The comparison of CAP88-PC version 2.0 versus CAP88-PC version 1.0

    International Nuclear Information System (INIS)

    Yakubovich, B.A.; Klee, K.O.; Palmer, C.R.; Spotts, P.B.

    1997-12-01

    40 CFR Part 61 (Subpart H of the NESHAP) requires DOE facilities to use approved sampling procedures, computer models, or other approved procedures when calculating Effective Dose Equivalent (EDE) values to members of the public. Currently version 1.0 of the approved computer model CAP88-PC is used to calculate EDE values. The DOE has upgraded the CAP88-PC software to version 2.0. This version provides simplified data entry, better printing characteristics, the use of a mouse, and other features. The DOE has developed and released version 2.0 for testing and comment. This new software is a WINDOWS based application that offers a new graphical user interface with new utilities for preparing and managing population and weather data, and several new decay chains. The program also allows the user to view results before printing. This document describes a test that confirmed CAP88-PC version 2.0 generates results comparable to the original version of the CAP88-PC program

  18. Chemical Mass Closure and Chemical Characteristics of Ambient PM0.1, PM2.5 and PM10 in a Highway Tunnel and at a Roaside

    Czech Academy of Sciences Publication Activity Database

    Chen, S.-Ch.; Tsai, Ch.-J.; Huang, Ch.-Y.; Chen, H.-D.; Chen, S.-J.; Lin, Ch.-Ch.; Tsai, J.-H.; Chou, Ch.C.K.; Lung, S.-Ch.; Huang, W.-R.; Smolík, Jiří; Ondráčková, Lucie

    2010-01-01

    Roč. 44, č. 9 (2010), s. 713-723 ISSN 0278-6826 Grant - others:EPA(TW) 96-U1U1-02-104; EPA(TW) 97-U1U1-02-106 Institutional research plan: CEZ:AV0Z40720504 Keywords : artifact * aerosol characterization * mass closure Subject RIV: CF - Physical ; Theoretical Chemistry Impact factor: 2.340, year: 2010

  19. Prompt photon measurements with PHENIX's MPC-EX detector

    Science.gov (United States)

    Campbell, Sarah; PHENIX Collaboration

    2013-08-01

    The MPC-EX detector is a Si-W preshower extension to the existing Muon Piston Calorimeter (MPC). The MPC-EX consists of eight layers of alternating W absorber and Si mini-pad sensors. Located at forward rapidity, 3.1 80 GeV, a factor of four improvement over current capabilities. Not only will the MPC-EX strengthen PHENIX's existing forward π0 and jet measurements, it will provide sufficient prompt photon and π0 separation to make a prompt photon measurement possible. Prompt photon yields at high pT, pT > 3 GeV/c, can be statistically extracted using the double ratio method. In transversely polarized p+p collisions, the measurement of the prompt photon single spin asymmetry, AN, will resolve the sign discrepancy between the Sivers and twist-3 extractions of AN. In p+Au collisions, the prompt photon RpAu will quantify the level of gluon saturation in the Au nucleus at low-x, x ~ 10-3, with a projected systematic error band a factor of four smaller than EPS09's current allowable range. The MPC-EX detector will expand our understanding of the gluon nuclear parton distribution functions, providing important information about the initial state of heavy ion collisions, and clarify how the valence parton's transverse momentum and spin correlates to the proton spin.

  20. Collaborative Middle School Geometry through Blogs and Other Web 2.0 Technologies

    Science.gov (United States)

    Hossain, Mokter; Wiest, Lynda R.

    2013-01-01

    This paper explores the use of blogs, a simple application of Web 2.0 technologies, in middle school geometry instruction. Specifically, it provides an overview of the interactive features of Web 2.0 technologies and the feasibility of using Web 2.0 technologies in geometry teaching and learning, as well as a proposed model for creating a…

  1. Web 2.0 - Haasteet ja mahdollisuudet

    OpenAIRE

    Nordbäck, Nina

    2010-01-01

    Tämä opinnäytetyö kertoo, mitä Web 2.0 on, ottaa esille sen haasteita ja mahdollisuuksia yrityksien liiketoimintaan keskittyneenä ja selvittää kuinka sosiaalisia medioita käytetään erilaisissa yrityksissä. Työ keskittyy myös internetpalveluiden käytettävyyteen. Sosiaaliset mediat ovat internetissä toimivia yhteisöjä, blogeja, video- ja kuvapalveluita, verkkokauppoja ja keskustelupalstoja, joissa internetkäyttäjät pääsevät jakamaan tietoa keskenään. Sosiaaliselle medialle tyypillistä ovat usei...

  2. Alignment 2.0: Strategic use of new internet technologies in government

    NARCIS (Netherlands)

    Meijer, A.J.; Thaens, M.

    2010-01-01

    This paper challenges the view that strategies for using Web 2.0 should primarily be based upon technological characteristics. The value of the organizational strategic alignment approach for developing specific operational Web 2.0 strategies for government organizations is explored both

  3. UML 2.0 Pocket Reference UML Syntax and Usage

    CERN Document Server

    Pilone, Dan

    2006-01-01

    Globe-trotting travelers have long resorted to handy, pocket-size dictionaries as an aid to communicating across the language barrier. Dan Pilone's UML 2.0 Pocket Reference is just such an aid for on-the-go developers who need to converse in the Unified Modeling Language (UML). Use this book to decipher the many UML diagrams you'll encounter on the path to delivering a modern software system. Updated to cover the very latest in UML, you'll find coverage of the following UML 2.0 diagram types: Class diagramsComponent diagrams*Sequence diagrams*Communication diagrams*Timing diagrams*Interactio

  4. Enterprise 2.0 - hvordan får du succes?

    DEFF Research Database (Denmark)

    Ivang, Reimer

    2009-01-01

    Det seneste år til halvandet har der været konstant stigende fokus og interesse for begrebet Enterprise 2.0. En interesse som kan ses af den konstant stigende litteratur som beskæftiger sig med emnet. Men er det noget for dig, for din organisation? Få svaret her.......Det seneste år til halvandet har der været konstant stigende fokus og interesse for begrebet Enterprise 2.0. En interesse som kan ses af den konstant stigende litteratur som beskæftiger sig med emnet. Men er det noget for dig, for din organisation? Få svaret her....

  5. Pemanfaatan Media Sosial dalam Pelayanan Rerefensi 2.0 di Indonesia

    Directory of Open Access Journals (Sweden)

    Ahmad Anwar

    2016-06-01

    Full Text Available In today era, there is a change of paradigm in organizing library in which a library is supposed to provide Web 2.0. In fact, its kind of service is used only for a medium to inform and promote library in general. To optimilize its Web 2.0 within the library, it is therefore the library needs to think of library services innovation. Reference service as a part of library must be playing an important role to optimize its service, or in the other words, they might think innovatively. With the growing rapid of usage os sosial media, the service should be worked in online. There are many sosial media today. The current study is aimed to discover the implementation of Web 2.0 in Indonesia

  6. Web 2.0 and gaming in libraries

    CERN Document Server

    McNicol, Sarah

    2009-01-01

    More and more libraries from all sectors are beginning to embrace Web 2.0 technologies and to investigate the potential of social networking, blogs, podcasting, wikis, gaming and other tools to connect with younger members of their user community in particular. This e-book reports on some of the most recent developments and activities in this dynamic, and often controversial, area.

  7. Remote and web 2.0 interventions for promoting physical activity.

    Science.gov (United States)

    Foster, Charles; Richards, Justin; Thorogood, Margaret; Hillsdon, Melvyn

    2013-09-30

    Remote and web 2.0 interventions for promoting physical activity (PA) are becoming increasingly popular but their ability to achieve long term changes are unknown. To compare the effectiveness of remote and web 2.0 interventions for PA promotion in community dwelling adults (aged 16 years and above) with a control group exposed to placebo or no or minimal intervention. We searched CENTRAL, MEDLINE, EMBASE, CINAHL, and some other databases (from earliest dates available to October 2012). Reference lists of relevant articles were checked. No language restrictions were applied. Randomised controlled trials (RCTs) that compared remote and web 2.0 PA interventions for community dwelling adults with a placebo or no or minimal intervention control group. We included studies if the principal component of the intervention was delivered using remote or web 2.0 technologies (for example the internet, smart phones) or more traditional methods (for example telephone, mail-outs), or both. To assess behavioural change over time, the included studies had a minimum of 12 months follow-up from the start of the intervention to the final results. We excluded studies that had more than a 20% loss to follow-up if they did not apply an intention-to-treat analysis. At least two authors independently assessed the quality of each study and extracted the data. Non-English language papers were reviewed with the assistance of an interpreter who was an epidemiologist. Study authors were contacted for additional information where necessary. Standardised mean differences (SMDs) and 95% confidence intervals (CIs) were calculated for the continuous measures of self-reported PA and cardio-respiratory fitness. For studies with dichotomous outcomes, odds ratios and 95% CIs were calculated. A total of 11 studies recruiting 5862 apparently healthy adults met the inclusion criteria. All of the studies took place in high-income countries. The effect of the interventions on cardiovascular fitness at one

  8. Comparison of motor diagnoses by Chicago Classification versions 2.0 and 3.0 on esophageal high-resolution manometry.

    Science.gov (United States)

    Patel, A; Cassell, B; Sainani, N; Wang, D; Shahid, B; Bennett, M; Mirza, F A; Munigala, S; Gyawali, C P

    2017-07-01

    The Chicago Classification (CC) uses high-resolution manometry (HRM) software tools to designate esophageal motor diagnoses. We evaluated changes in diagnostic designations between two CC versions, and determined motor patterns not identified by either version. In this observational cohort study of consecutive patients undergoing esophageal HRM over a 6-year period, proportions meeting CC 2.0 and 3.0 criteria were segregated into esophageal outflow obstruction, hypermotility, and hypomotility disorders. Contraction wave abnormalities (CWA), and 'normal' cohorts were recorded. Symptom burden was characterized using dominant symptom intensity and global symptom severity. Motor diagnoses, presenting symptoms, and symptom burden were compared between CC 2.0 and 3.0, and in cohorts not meeting CC diagnoses. Of 2569 eligible studies, 49.9% met CC 2.0 criteria, but only 40.3% met CC 3.0 criteria (P3.0, 82.8% of diagnoses were concordant. Discordance resulted from decreasing proportions of hypermotility (4.4%) and hypomotility (9.0%) disorders, and increase in 'normal' designations (13.0%); esophageal outflow obstruction showed the least variation between CC versions. Symptom burden was higher with CC 3.0 diagnoses (P≤.005) but not with CC 2.0 diagnoses (P≥.1). Within 'normal' cohorts for both CC versions, CWA were associated with higher likelihood of esophageal symptoms, especially dysphagia, regurgitation, and heartburn, compared to truly normal studies (P≤.02 for each comparison). Despite lower sensitivity, CC 3.0 identifies esophageal motor disorders with higher symptom burden compared to CC 2.0. CWA, which are associated with both transit and perceptive symptoms, are not well identified by either version. © 2017 John Wiley & Sons Ltd.

  9. Ex-post evaluation of tax legislation in the Netherlands

    NARCIS (Netherlands)

    S.J.C. Hemels (Sigrid)

    2011-01-01

    textabstractIntroduction Since the end of the 20th century, ex-post evaluation of tax legislation has consistently been part of the agenda of the Dutch government. In 2005, the 2001 Income tax Act was evaluated. In addition, several tax expenditures are evaluated each year. Tax expenditures can be a

  10. Comercialização de frutas exóticas

    Directory of Open Access Journals (Sweden)

    Hélio Satoshi Watanabe

    2014-03-01

    Full Text Available Nas Centrais de Abastecimento - CEASAs, a fruta é considerada exótica quando comercializada em menor volume. Apesar do aumento significativo da demanda de algumas frutas exóticas nos últimos anos, o volume total ainda é pequeno em relação ao volume total das demais frutas. Em 2012, na Companhia de Entrepostos e Armazéns Gerais de Säo Paulo - CEAGESP, as frutas exóticas representaram 0,65% do volume total de frutas comercializadas e 2,09% do volume financeiro do setor de frutas. A oferta de algumas frutas exóticas na CEAGESP teve crescimentos surpreendentes nos últimos 5 anos, como foi o caso da lichia, romä, mangostäo, pitaya, physalis e das frutas vermelhas- amora e framboesa. Por outro lado, carambola, abiu e umbu tiveram o volume comercializado diminuído nos últimos 3 anos.

  11. Adaptacao e validacao do WHODAS 2.0 em utentes com dor musculoesqueletica

    Directory of Open Access Journals (Sweden)

    Carla Silva

    2013-08-01

    Full Text Available OBJETIVO Validar a versão em português do World Health Organization Disability Assessment Schedule (WHODAS 2.0. MÉTODOS A versão original de 36 itens do WHODAS 2.0, administrada por entrevista, foi traduzida para o português de acordo com orientações internacionais e testada em nove participantes da população em geral. A versão em português foi administrada em 204 pacientes com patologia musculoesquelética. Foram coletados os dados sociodemográficos e de saúde dos pacientes, assim como o número de locais onde apresentavam dor e sua intensidade. O WHODAS 2.0 foi novamente administrado por um segundo entrevistador, um a três dias após a primeira entrevista, para avaliar a confiabilidade interavaliadores. A validade de constructo foi avaliada quanto a: capacidade do WHODAS 2.0 para diferenciar participantes com diferentes locais com dor e associação entre o WHODAS 2.0 e a intensidade da dor. A consistência interna também foi avaliada. RESULTADOS A versão portuguesa do WHODAS 2.0 teve fácil compreensão, apresentou boa consistência interna (α = 0,84 e confiabilidade interavaliadores (CCI = 0,95. Mostrou ser capaz de detectar diferenças estatisticamente significativas entre indivíduos com diferente número de locais com dor (p < 0,01 e indicar que maior incapacidade está associada à maior intensidade da dor (r = 0,44, p < 0,01, indicando validade de constructo. CONCLUSÕES A versão portuguesa do WHODAS 2.0 mostrou-se confiável e válida quando utilizada em pacientes com dor associada à patologia musculoesquelética.

  12. A compactness lemma of Aubin type and its application to degenerate parabolic equations

    Directory of Open Access Journals (Sweden)

    Anvarbek Meirmanov

    2014-10-01

    Full Text Available Let $\\Omega\\subset \\mathbb{R}^{n}$ be a regular domain and $\\Phi(s\\in C_{\\rm loc}(\\mathbb{R}$ be a given function. If $\\mathfrak{M}\\subset L_2(0,T;W^1_2(\\Omega \\cap L_{\\infty}(\\Omega\\times (0,T$ is bounded and the set $\\{\\partial_t\\Phi(v|\\,v\\in \\mathfrak{M}\\}$ is bounded in $L_2(0,T;W^{-1}_2(\\Omega$, then there is a sequence $\\{v_k\\}\\in \\mathfrak{M}$ such that $v_k\\rightharpoonup v \\in L^2(0,T;W^1_2(\\Omega$, and $v_k\\to v$, $\\Phi(v_k\\to \\Phi(v$ a.e. in $\\Omega_T=\\Omega\\times (0,T$. This assertion is applied to prove solvability of the one-dimensional initial and boundary-value problem for a degenerate parabolic equation arising in the Buckley-Leverett model of two-phase filtration. We prove existence and uniqueness of a weak solution, establish the property of finite speed of propagation and construct a self-similar solution.

  13. Developing RESTful web services with Jersey 2.0

    CERN Document Server

    Gulabani, Sunil

    2013-01-01

    The book will follow a standard tutorial approach and will teach readers how to use the Jersey API for creating RESTful web services.This book is intended for Java EE developers who are building applications on the REST architecture. This is a quick, hands-on guide for learning JAX-RS 2.0. Developers should have some knowledge about RESTful web services but it's not essential to know JAX-RS 1.0.

  14. Making Web 2.0 Work--From "Librarian Habilis" to "Librarian Sapiens"

    Science.gov (United States)

    Cvetkovic, Milica

    2009-01-01

    When people look back at the World Wide Web of 1996, there can be no doubt that today's web is better and more useful. Hyperlinking webpages and bookmarking were two of the most important aspects of the Web 1.0 world. Soon, though, usability and sharing became very high priorities, and Web 2.0 evolved. Information published in the Web 2.0 world…

  15. Web 2.0 and communication processes at work : Evidence from China

    NARCIS (Netherlands)

    Wong, L.H.M.; Ou, Carol; Davison, R.M.; Zhu, H.; Zhang, C.

    Research problem: Web 2.0 applications, such as instant messengers and other social media platforms, are fast becoming ubiquitous in organizations, yet their impact on work performance is poorly understood. Research question: What is the relationship between Web 2.0 use, and work-based communication

  16. Realizing the Promise of Web 2.0: Engaging Community Intelligence

    Science.gov (United States)

    HESSE, BRADFORD W.; O’CONNELL, MARY; AUGUSTSON, ERIK M.; CHOU, WEN-YING SYLVIA; SHAIKH, ABDUL R.; RUTTEN, LILA J. FINNEY

    2011-01-01

    Discussions of “Health 2.0,” first coined in 2005, were guided by three main tenets: (a) health was to become more participatory, as an evolution in the Web encouraged more direct consumer engagement in their own healthcare; (b) data was to become the new “Intel Inside” for systems supporting the “vital decisions” in health; and (c) a sense of “collective intelligence” from the network would supplement traditional sources of knowledge in health decision-making. Interests in understanding the implications of a new paradigm for patient engagement in health and healthcare were kindled by findings from surveys such as the National Cancer Institute’s Health Information National Trends Survey (HINTS), showing that patients were quick to look online for information to help them cope with disease. This paper considers how these three facets of Health 2.0–participation, data, and collective intelligence–can be harnessed to improve the health of the nation according to Healthy People 2020 goals. We begin with an examination of evidence from behavioral science to understand how Web 2.0 participative technologies may influence patient processes and outcomes, better or worse, in an era of changing communication technologies. The paper then focuses specifically on the clinical implications of “Health 2.0” and offers recommendations to ensure that changes in the communication environment do not detract from national (e.g., Health People 2020) health goals. Changes in the clinical environment, as catalyzed by the Health Information Technology for Economic and Clinical Health (HITECH) Act to take advantage of Health 2.0 principles in evidence-based ways, are also considered. PMID:21843093

  17. MOLEonline 2.0: interactive web-based analysis of biomacromolecular channels.

    Science.gov (United States)

    Berka, Karel; Hanák, Ondrej; Sehnal, David; Banás, Pavel; Navrátilová, Veronika; Jaiswal, Deepti; Ionescu, Crina-Maria; Svobodová Vareková, Radka; Koca, Jaroslav; Otyepka, Michal

    2012-07-01

    Biomolecular channels play important roles in many biological systems, e.g. enzymes, ribosomes and ion channels. This article introduces a web-based interactive MOLEonline 2.0 application for the analysis of access/egress paths to interior molecular voids. MOLEonline 2.0 enables platform-independent, easy-to-use and interactive analyses of (bio)macromolecular channels, tunnels and pores. Results are presented in a clear manner, making their interpretation easy. For each channel, MOLEonline displays a 3D graphical representation of the channel, its profile accompanied by a list of lining residues and also its basic physicochemical properties. The users can tune advanced parameters when performing a channel search to direct the search according to their needs. The MOLEonline 2.0 application is freely available via the Internet at http://ncbr.muni.cz/mole or http://mole.upol.cz.

  18. The Web 2.0 as Marketing Tool: Opportunities for SMEs

    OpenAIRE

    Constantinides, Efthymios

    2008-01-01

    The new generation of Internet applications widely known as Social Media or Web 2.0 offers corporations a whole range of opportunities for improving their marketing efficiency and internal operations. Web 2.0 applications have already become part of the daily life of an increasing number of consumers who regard them as prime channels of communication, information exchange, sharing of expertise, dissemination of individual creativity and entertainment. Web logs, podcasts, online forums and soc...

  19. Opening up Global Value Chains : Web 2.0 Technologies and SME ...

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

    Opening up Global Value Chains : Web 2.0 Technologies and SME Productivity ... Researchers will examine how leading SMEs are currently using Web 2.0 technologies to increase exports, improve productivity and/or increase competitiveness; and the barriers and limitations to achieving greater ICT adoption by SMEs.

  20. Effects of frequently used pharmaceutical excipients on the organic cation transporters 1-3 and peptide transporters 1/2 stably expressed in MDCKII cells.

    Science.gov (United States)

    Otter, Marcus; Oswald, Stefan; Siegmund, Werner; Keiser, Markus

    2017-03-01

    There is ample evidence that pharmaceutical excipients, which are supposed to be pharmacologically inactive, have an impact on drug metabolism and efflux transport. So far, little is known whether they also modulate uptake transporter proteins. We have recently shown that commonly used solubilizing agents exert significant effects on the function of organic anion uptake transporting polypeptides. Therefore, we investigated in this study the influence of frequently used pharmaceutical excipients on the transport activity of organic cation transporters OCT1, OCT2 and OCT3 and the peptide transporters PEPT1 and PEPT2. Inhibition of the OCTs and PEPTs by the excipients polyethylene glycol 400 (PEG), hydroxypropyl-β-cyclodextrin (HPCD), Solutol® HS15 (SOL), Cremophor® EL (CrEL), Tween® 20 (Tw20), Tween® 80 (Tw80), Kolliphor® P188 (P188) and Kolliphor® P407 (P407) was evaluated using stably transfected MDCKII cells with radio-labeled reference substrates and established inhibitors as controls. Intracellular accumulation of [3H]-1-methyl-4-phenylpyridinium (MPP + ) for the OCTs and [3H]-glycyl-sarcosine (Gly-Sar) for the PEPTs was measured by liquid scintillation counting after cell lysis. Our studies revealed that PEG, HPCD, SOL, CrEL, Tw20 and Tw80 were potent inhibitors of OCT1-3 (e.g., Tw20 IC 50 values<0.04%). Cellular uptake of Gly-Sar by PEPT1 and PEPT2 was strongly inhibited by both Tw20 and Tw80. SOL was also a strong inhibitor of PEPT1 and PEPT2 (e.g., SOL IC 50 values<0.02%), while CrEL showed significantly inhibition of only PEPT2. The substantial inhibitory effects of certain solubilizing agents on OCTs and PEPTs should be considered if they are to be used in dosage forms for new chemical entities and registered drugs to avoid misinterpretation of pharmacokinetic data and undesired drug interactions. Copyright © 2016 Elsevier B.V. All rights reserved.

  1. THE 0.5-2.22 μm SCATTERED LIGHT SPECTRUM OF THE DISK AROUND TW Hya: DETECTION OF A PARTIALLY FILLED DISK GAP AT 80 AU

    International Nuclear Information System (INIS)

    Debes, John H.; Jang-Condell, Hannah; Weinberger, Alycia J.; Roberge, Aki; Schneider, Glenn

    2013-01-01

    We present a 0.5-2.2 μm scattered light spectrum of the circumstellar disk around TW Hya from a combination of spatially resolved Hubble Space Telescope STIS spectroscopy and NICMOS coronagraphic images of the disk. We investigate the morphology of the disk at distances >40 AU over this wide range of wavelengths, and identify the presence of a depression in surface brightness at ∼80 AU that could be caused by a gap in the disk. Additionally, we quantify the surface brightness, azimuthal symmetry, and spectral character of the disk as a function of radius. Our analysis shows that the scattering efficiency of the dust is largely neutral to blue over the observed wavelengths. We model the disk as a steady α-disk with an ad hoc gap structure. The thermal properties of the disk are self-consistently calculated using a three-dimensional radiative transfer code that uses ray tracing to model the heating of the disk interior and scattered light images. We find a good fit to the data over a wide range of distances from the star if we use a model disk with a partially filled gap of 30% depth at 80 AU and with a self-similar truncation knee at 100 AU. The origin of the gap is unclear, but it could arise from a transition in the nature of the disk's dust composition or the presence of a planetary companion. Based on scalings to previous hydrodynamic simulations of gap-opening criteria for embedded proto-planets, we estimate that a planetary companion forming the gap could have a mass between 6 and 28 M ⊕ .

  2. Andrzej Karpowicz – twórca Pracowni Zbiorów Masońskich Biblioteki Uniwersyteckiej w Poznaniu

    Directory of Open Access Journals (Sweden)

    Tomasz Kurzawa

    2011-01-01

    Full Text Available Artykuł omawia działalność naukową i zasługi w zakresie pracy bibliotecznej twórcy Pracowni Zbiorów Masońskich Biblioteki Uniwersyteckiej – mgra Andrzeja Karpowicza. Portret Andrzeja Karpowicza przedstawiony został na szerokim tle piśmiennictwa i źródeł do dziejów wolnomularstwa oraz sylwetek autorów zajmujących się wskazaną problematyką.

  3. Anomaly, fluxes and (2,0) heterotic-string compactifications

    Energy Technology Data Exchange (ETDEWEB)

    Gillard, Joe; Papadopoulos, George; Tsimpis, Dimitrios [Department of Mathematics, King' s College London, Strand, London WC2R 2LS (United Kingdom)]. E-mail: tsimpis@fy.chalmers.se

    2003-06-01

    We compute the corrections to heterotic-string backgrounds with (2,0) world-sheet supersymmetry, up to two loops in sigma-model perturbation theory. We investigate the conditions for these backgrounds to preserve spacetime supersymmetry and we find that a sufficient requirement for consistency is the applicability of the {partial_derivative} {partial_derivative}-bar-lemma. In particular, we investigate the {alpha}' corrections to (2,0) heterotic-string compactifications and we find that the Calabi-Yau geometry of the internal space is deformed to a hermitean one. We show that at first order in {alpha}', the heterotic anomaly-cancellation mechanism does not induce any lifting of moduli. We explicitly compute the corrections to the conifold and to the U(n)-invariant Calabi-Yau metric at first order in {alpha}'. We also find a generalization of the gauge-field equations, compatible with the Donaldson equations on conformally-balanced hermitean manifolds. (author)

  4. Anomaly, fluxes and (2,0) heterotic-string compactifications

    International Nuclear Information System (INIS)

    Gillard, Joe; Papadopoulos, George; Tsimpis, Dimitrios

    2003-01-01

    We compute the corrections to heterotic-string backgrounds with (2,0) world-sheet supersymmetry, up to two loops in sigma-model perturbation theory. We investigate the conditions for these backgrounds to preserve spacetime supersymmetry and we find that a sufficient requirement for consistency is the applicability of the ∂ ∂-bar-lemma. In particular, we investigate the α' corrections to (2,0) heterotic-string compactifications and we find that the Calabi-Yau geometry of the internal space is deformed to a hermitean one. We show that at first order in α', the heterotic anomaly-cancellation mechanism does not induce any lifting of moduli. We explicitly compute the corrections to the conifold and to the U(n)-invariant Calabi-Yau metric at first order in α'. We also find a generalization of the gauge-field equations, compatible with the Donaldson equations on conformally-balanced hermitean manifolds. (author)

  5. Competencias informaticas para el e-learning 2.0

    Directory of Open Access Journals (Sweden)

    Gabriel Valerio Ureña

    2011-06-01

    Full Text Available La sociedad del conocimiento ha alterado la forma en que la humanidad trabaja, se divierte y aprende; de ahí el surgimiento del denominado e–learning, una modalidad educativa cuya “innovación” ha sido cuestionada por la tendencia a simular formas tradicionales de educar. Esta investigación explora el concepto de e–learning 2.0 y los principios del conectivismo como marco de referencia. El objetivo principal de este trabajo de investigación fue identificar las competencias informáticas que necesitará un estudiante universitario para responder a lo que se anticipa como la modalidad del e–learning 2.0. La investigación, de naturaleza cualitativa, fue realizada en una institución de educación superior privada, con un grupo de 21 estudiantes y recién egresados de una carrera en particular y 13 profesores universitarios.

  6. Promoter2.0: for the recognition of PolII promoter sequences

    DEFF Research Database (Denmark)

    Knudsen, Steen; Knudsen, Steen

    1999-01-01

    transcription start sites. On standardized test setsconsisting of human genomic DNA, the performance of Promoter2.0 compares well with other softwaredeveloped for the same purpose. Availability : Promoter2.0 is available as a Web server at http://www.cbs.dtu.dk/services/promoter/ Contact : steen@cbs.dtu.dk...

  7. Mobility 2.0: Co-Operative ITS Systems for Enhanced Personal Electromobility

    NARCIS (Netherlands)

    Solar, Alma; Bolovinou, Anastasia; Heijenk, Geert; Lasgouttes, Jean-Marc; Giménez, Rafael

    2013-01-01

    Mobility2.0 is an ITS project aiming at developing and testing an in-vehicle commuting assistant for FEV mobility, resulting in more reliable and energy-efficient electro-mobility. In order to achieve a maximum impact, Mobility2.0 takes an integrated approach of addressing the main bottlenecks of

  8. An Integrated Framework Of Web 2.0 Technology And A Collaborative Learning

    Directory of Open Access Journals (Sweden)

    Mohamed Madar

    2015-05-01

    Full Text Available Abstract This paper contributes to the suitability of web 2.0 technology in implementing collaborative learning and proposes an integrated framework of Web 2.0 tools and collaborative learning activities. This paper is also identifying the mismatch between adopting web 2.0 technologies and the delivery of the curriculum on the cloud or via the Internet. It is found that Web 2.0 and a collaborative learning are two platforms to be easily synchronized due to their common attributes that enable their complementariness. This paper argues that integrated framework of Web 2.0 and CL allow users exploit teachinglearning materials maximally and at the same upsurges learners understanding in the subject knowledge. Suitable of Web 2.0 in implementing curriculum was also encouraged since the proposed framework consists of both components of Web 2.0 functions and activities of collaborative learning environment. Pedagogically there has been a mismatch between E-learning technologies and mode of delivery for instance E-learning platforms are widely used to increase content accessibility only while now this framework introduces that Web 2.0 technology of E-learning can also be used to create share knowledge among users. The proposed framework if efficiently exploited will also allow users at all levels create personalized learning environment which suits perspective teachinglearning styles of the users. Apart from academic achievement or enhancements of the teaching and learning processes the proposed framework also would help learners develop generic skills which are very important in the workplaces. As a result of this fast and independent learning technically depend on technology based pedagogy and in this case this proposed model has two dimensions which are very crucial to the enrichment of students learning activities.

  9. LMS and E-learning 2.0. A Second Life for E-learning

    Directory of Open Access Journals (Sweden)

    Eng. Cosmin Olteanu

    2008-12-01

    Full Text Available E-learning 2.0 is a consequence of evolving into Web 2.0. Therefore we can say that Web2.0 : is defined as the “read-write” web which provides all the services and applications to allow individualsto co-create content, collaborate and share it with others that supports user-generated content, that is contentcreated by “users”, rather than specialist authors or publishers using a variety of affordable technologieslike blogs, podcasts and wikis. E-learning 2.0 is about creating and sharing information and knowledgewith others and is about using blogs, wikis, social bookmarking and social networks within an educationalor training context to support a new collaborative approach to learning.

  10. HigherEd 2.0: Using social media in engineering education

    OpenAIRE

    Berger, Edward

    2014-01-01

    Social media (blogs, wikis, video, and a digital authoring culture) has emerged in the last decade as a dominant feature of the technology landscape, especially for our current generation of digital-native students. Leveraging these tools for higher education in general, and engineering education in particular, should be of immediate and pressing concern for engineering educators. This discussion summarizes the HigherEd 2.0 project, the creative convergence of higher education and “web 2.0” t...

  11. Participation, civic engagement and Web 2.0 – three cases

    DEFF Research Database (Denmark)

    Bødker, Susanne; Zander, Pär-Ola Mikael

    2013-01-01

    This paper takes its starting point in the civic sphere, in the meeting between (municipal) democracy, social technologies (Web 2.0) and participatory design as it has been brought to non-work settings. There is a significant body of literature that deals with the use of social technologies/Web 2...... increasing the available amount of information about public policy does not lead to increased democratic engagement. Based on the eGov+ project where we explored three cases of Web 2.0 and participatory design in municipal government settings, we discuss the various understandings of democracy...... themselves vis-à-vis their voters. We discuss how we develop the potentials of participation on the boundaries of design and use of Web 2.0 technologies. We also discuss the extent to which participation can be of political value by enabling active citizenship. And vice versa, we investigate how democracy...

  12. A Study of A Web 2.0-based Educative Platform

    Directory of Open Access Journals (Sweden)

    Jang-Ruey Tzeng

    2009-08-01

    Full Text Available Despite the booming information technology, traditionally one-way teaching/learning mode remains dominating the class. Although there are some education institutes take information system as a supplementary tool and some courses has been taught online, teaching materials in class are in the main the written ones, and online forms of teaching still concentrate in one classroom assisted by programmed media. Generally speaking, textbooks and classrooms are the major vehicles of the education in Taiwan with a main purpose to have face-to-face conveyance of knowledge. The conventional means to education has been criticized as monotonous, depressing and restraining [1]. To orient the situation toward the future that education is a service system with students rather than tutors at the center [2], this paper looks at the application potentials of Web 2.0 technology to be integrated into the teaching frameworks. With the core value of Web 2.0 technology that lies in the empowerment of internet users from sole capabilities to download and reading into one that can upload and share, the paper seeks to construct an educative platform supported by the Web 2.0 technology with a view to transform conventional forms of tutors-centered education and improve teaching and learning effects. The paper is structurally divided into four sections. Section 1 gives a brief on the Web 2.0 technology. Section 2 frame the current gaps left by digital educative platforms. Section 3 is to construct a preliminary educative model supported by the Web 2.0 technology with four elements-website users, contents, virtual community and tools-put into the flowchart. A discussion and recommendation for further research lies in Section 4, which also serves as a conclusion.

  13. Knowledge and Use of Web 2.0 by LIS Academics in Iran

    Directory of Open Access Journals (Sweden)

    Maryam Sarrafzadeh

    2012-12-01

    Full Text Available The present paper discussed results of a study which aimed to explore the knowledge and use of Web 2.0 technologies by LIS academics in Iran and to explore the challenges they faced for using these technologies. The research method was explorative and empirical. Data was collected through a web-based survey questionnaire containing both open and close ended questions. The results showed that LIS academics in Iran had good level of familiarity with some Web 2.0 tools such as blog, wiki, YouTube and Facebook. However, their familiarity with some other Web 2.0 tools such as RSS, feeds, Twitter, Flickr, Delicious and podcast was limited. Blog, discussion groups, chat tools, file sharing tools, Wikis, SMS, video sharing tools and forum were used respectively by LIS academics in their teaching. Internet filtering was identified as the most inhibiting barrier to the use of Web 2.0 tools. Lack of access to high speed internet and lack of training were pointed as the other identified barriers. Authors suggested that to reap the benefits of Web 2.0, LIS academics needed to find alternative non filtered Web 2.0 tools to employ in their teaching and research.

  14. WALK 2.0: examining the effectiveness of Web 2.0 features to increase physical activity in a 'real world' setting: an ecological trial.

    Science.gov (United States)

    Caperchione, Cristina M; Kolt, Gregory S; Savage, Trevor N; Rosenkranz, Richard R; Maeder, Anthony J; Vandelanotte, Corneel; Duncan, Mitch J; Van Itallie, Anetta; Tague, Rhys; Mummery, W Kerry

    2014-10-10

    Low levels of health-enhancing physical activity require novel approaches that have the potential to reach broad populations. Web-based interventions are a popular approach for behaviour change given their wide reach and accessibility. However, challenges with participant engagement and retention reduce the long-term maintenance of behaviour change. Web 2.0 features present a new and innovative online environment supporting greater interactivity, with the potential to increase engagement and retention. In order to understand the applicability of these innovative interventions for the broader population, 'real-world' interventions implemented under 'everyday conditions' are required. The aim of this study is to investigate the difference in physical activity behaviour between individuals using a traditional Web 1.0 website with those using a novel Web 2.0 website. In this study we will aim to recruit 2894 participants. Participants will be recruited from individuals who register with a pre-existing health promotion website that currently provides Web 1.0 features (http://www.10000steps.org.au). Eligible participants who provide informed consent will be randomly assigned to one of the two trial conditions: the pre-existing 10 000 Steps website (with Web 1.0 features) or the newly developed WALK 2.0 website (with Web 2.0 features). Primary and secondary outcome measures will be assessed by self-report at baseline, 3 months and 12 months, and include: physical activity behaviour, height and weight, Internet self-efficacy, website usability, website usage and quality of life. This study has received ethics approval from the University of Western Sydney Human Research Ethics Committee (Reference Number H8767) and has been funded by the National Health and Medical Research Council (Reference Number 589903). Study findings will be disseminated widely through peer-reviewed publications, academic conferences and local community-based presentations. Australian New

  15. Web 2.0 Technologies: The Best-Fit Model for Preservice Teachers

    Science.gov (United States)

    Amundson, Lisa

    2017-01-01

    Web 2.0 technologies facilitate teacher partnerships in today's diverse classrooms. Teacher preparation programs are seeking the factors to support their students desire to use these technologies. A total of 590 preservice teachers reported the factors that lead to their behavioral intentions to use Web 2.0 technologies. Using the theoretical…

  16. PR 2.0 müsteeriumid / Jaan Vare

    Index Scriptorium Estoniae

    Vare, Jaan, 1977-

    2008-01-01

    PR 2.0 ehk avalike suhete uus põlvkond kasutab rohkem uusi võimalusi, viies interneti ja sealsete kommuunide kaudu omavahel kokku turu eri segmendid ning ühendades tarbijaid tootjaga. Üheks uueks firma häälekandjaks veebis võib olla ka blogimine

  17. Hacking Summon 2.0 The Elegant Way

    Directory of Open Access Journals (Sweden)

    Annette Bailey

    2014-10-01

    We have implemented several features that demonstrate our approach, such as a click-recording script, COinS and facet customization, and the integration of eBook public notes. Our explanation and code should be of direct use for adoption or as examples for other Summon 2.0 customers, but they may also be useful to anyone faced with the need to add enhancements to other vendor-controlled MVC-based sites.

  18. El fenómeno 2.0 en el sector turístico. El caso de Madrid 2.0

    Directory of Open Access Journals (Sweden)

    Trinidad Domínguez Vila

    2012-01-01

    Full Text Available Hoy en día, en la mayoría de los ámbitos, Internet es un elemento clave para cualquier actividad, que cambia continuamente y que requiere una actualización constante. Una de las últimas evoluciones ha dado como resultado la web 2.0, que permite la interacción directa y la retroalimentación con el usuario, siendo su principal eje la publicación de opiniones e intercambio de informaciones. El sector turístico, al igual que toda la sociedad, también se ha visto envuelto en dichos cambios, presentándosele una oportunidad y una ventaja competitiva al poder trabajar con herramientas que posibilitan la comunicación directa. Una de las grandes apuestas ha sido la realizada por la Comunidad de Madrid a través de su web www.turismomadrid.es. En este trabajo se busca analizar el papel actual que Internet, la Web 2.0 y principalmente las redes sociales, están jugando en relación al turismo, para posteriormente poder comprobar a través de una comparativa con las webs turísticas de otras comunidades, si el caso de Madrid se muestra como el principal modelo de estrategia proactiva, tal como se recoge en sus objetivos iniciales.

  19. Abandoned Well Program. Version 2.0. Volume 1

    Science.gov (United States)

    1988-09-01

    Sec 26 222 2 26A01 SW NW Sec 26 27 8 26A02 NE NW Sec 26 700 36 26A03 NW NE Sec 26 48 36 Section 27 27001 NW NW Sec 27 53 4 27008 NW NW Sec 27 44 2...5-0 4 132 "_5 140-s 11 5 05 12-! 0(35 1 45 14 032170 06 111 .43 144 06 2 0 15 oso I 03 15, 04146•-,T. -- ISO I5 f 4156 37 313 154 0S 311172 1 1 317...1 4 54 36 210 0 017- 20- 423 331-200-1 0 -0 -06 -00 -64 -06 -11 210 - ? -! I’’ I 9’I It I.8 I _ -10 -16 -161 - iso -157 -166 -150 -137 -140 -104 -123

  20. Ex Vitro Seedling Development from In Vitro Rhizome-Like Bodies in Eulophia promensis Lindl.: A New Technique for Orchid Propagation

    Directory of Open Access Journals (Sweden)

    Mohammad Musharof Hossain

    2015-01-01

    Full Text Available This communication describes in vitro seed germination, embryo differentiation, and ex vitro seedling production from in vitro rhizome-like bodies of a terrestrial orchid, Eulophia promensis Lindl. Effects of two nutrient media, namely, Murashige and Skoog (MS and Phytotechnology Orchid Seed Sowing medium (P723 supplemented with 6-benzylaminopurine (BAP; 0.5–1.0 mgL−1 and/or α-naphthalene acetic acid (NAA; 0.5–1.0 mgL−1 and activated charcoal (2.0 gL−1, were studied on seed germination and subsequent development of embryos. Maximum seed germination (100% was recorded in P723 medium fortified with 1.0 mgL−1 BAP + 2.0 gL−1 activated charcoal. The different developmental stages of protocorm morphogenesis were traced out. In subsequent subcultures, the protocorms proliferated profusely and developed rhizome-like bodies (RLBs with numerous hair-like structures. These RLBs were transferred to pots containing potting mixture composed of humus + coir dust + saw dust (1 : 1 : 1 where ∼80% of RLBs survived and produced 1–3 seedlings per RLB. This is the first time report for in vitro germination of seeds and ex vitro seedling production from in vitro raised RLBs in Eulophia promensis. This is a time saving and cost effective protocol that could be extended to other economically important, rare, and endangered orchids for propagation and conservation.

  1. Perception on Adoption and Application of Web 2.0 Technologies in ...

    African Journals Online (AJOL)

    The main objective of the present study was to find out perceptions of librarians regarding integration of Web 2.0 technologies in library operations and services. Specifically, to determine the level of awareness, reasons for integration, and the challenges of Web 2.0 in supporting library operations and services at SUA and ...

  2. Language Learning: The Merge of Teletandem and Web 2.0 Tools

    Science.gov (United States)

    Abreu-Ellis, Carla; Ellis, Jason Brent; Carle, Abbie; Blevens, Jared; Decker, Aline; Carvalho, Leticia; Macedo, Patricia

    2013-01-01

    The following action research provides an overview of student's perceptions of the incorporation of Web 2.0 technologies into in-tandem language learning activities. American and Brazilian college students were partnered in order to work in-tandem through pre-determined language activities using Web 2.0 technologies to learn a second language,…

  3. Unusual magnetoresistance in cubic B20 Fe0.85Co0.15Si chiral magnets

    Science.gov (United States)

    Huang, S. X.; Chen, Fei; Kang, Jian; Zang, Jiadong; Shu, G. J.; Chou, F. C.; Chien, C. L.

    2016-06-01

    The B20 chiral magnets with broken inversion symmetry and C4 rotation symmetry have attracted much attention. The broken inversion symmetry leads to the Dzyaloshinskii-Moriya that gives rise to the helical and Skyrmion states. We report the unusual magnetoresistance (MR) of B20 chiral magnet Fe0.85Co0.15Si that directly reveals the broken C4 rotation symmetry and shows the anisotropic scattering by Skyrmions with respect to the current directions. The intimacy between unusual MR and broken symmetry is well confirmed by theoretically studying an effective Hamiltonian with spin-orbit coupling. The unusual MR serves as a transport signature for the Skyrmion phase.

  4. Unusual magnetoresistance in cubic B20 Fe0.85Co0.15Si chiral magnets

    International Nuclear Information System (INIS)

    Huang, S X; Chen, Fei; Zang, Jiadong; Chien, C L; Kang, Jian; Shu, G J; Chou, F C

    2016-01-01

    The B20 chiral magnets with broken inversion symmetry and C 4 rotation symmetry have attracted much attention. The broken inversion symmetry leads to the Dzyaloshinskii–Moriya that gives rise to the helical and Skyrmion states. We report the unusual magnetoresistance (MR) of B20 chiral magnet Fe 0.85 Co 0.15 Si that directly reveals the broken C 4 rotation symmetry and shows the anisotropic scattering by Skyrmions with respect to the current directions. The intimacy between unusual MR and broken symmetry is well confirmed by theoretically studying an effective Hamiltonian with spin–orbit coupling. The unusual MR serves as a transport signature for the Skyrmion phase. (paper)

  5. Solubility of tritium in Pd1-YAgY alloys (Y = 0.00, 0.10, 0.20, 0.30)

    International Nuclear Information System (INIS)

    Lasser, R.; Powell, G.L.

    1988-01-01

    Solubility measurements of tritium (T) in Pd 1-Y Ag Y alloys (Y = 0.00, 0.10, 0.20, 0.30) are reported in the temperature range of 250 K to 733 K, the pressure range below 3 bar, and the concentration range of 0.001 to 0.64 hydrogen to metal atom ratio. To study isotopic effects, the pressure-concentration-temperature relationships of the hydrogen isotopes protium (H) and deuterium (D) have been measured using the same samples and experimental setup and to temperatures as high as 1500 K using a different set up and samples. The experimental data are compared with values for H and D determined by other groups. In the case of T, most of the data presented have not been determined before. From these data the Sieverts' constants were calculated which show a strong temperature and isotope dependence. Analytical expressions, based on models that assume various degrees to which the hydrogen can perceive the alloy composition of individual sites in an alloy, are given for the Sieverts' constants that allow the calculation of the standard Gibbs free energies, enthalpies and entropies of H, D and T in these alloys

  6. Playmarche: un distretto regionale dei beni culturali 2.0 / Playmarche: a 2.0 regional cultural heritage district

    Directory of Open Access Journals (Sweden)

    Roberto Perna

    2015-08-01

    The paper aims to provide a brief overview on the objectives and methods of realization of the project PlayMarche: un Distretto regionale dei beni culturali 2.0. The project – presented by the University of Macerata and approved in the call for the DCE of the Marche Region – aims to develop and consolidate the economic sector of the ICT technologies applied to communication, dissemination and innovative exploitation of cultural heritage. It focuses, in particular, on the supply chain both of edutainment and entertainment, with consequences in terms of job creation in sectors with high innovation and economic sustainability.

  7. WALK 2.0: Examining the effectiveness of Web 2.0 features to increase physical activity in a ‘real world’ setting: an ecological trial

    Science.gov (United States)

    Caperchione, Cristina M; Kolt, Gregory S; Savage, Trevor N; Rosenkranz, Richard R; Maeder, Anthony J; Vandelanotte, Corneel; Duncan, Mitch J; Van Itallie, Anetta; Tague, Rhys; Mummery, W Kerry

    2014-01-01

    Introduction Low levels of health-enhancing physical activity require novel approaches that have the potential to reach broad populations. Web-based interventions are a popular approach for behaviour change given their wide reach and accessibility. However, challenges with participant engagement and retention reduce the long-term maintenance of behaviour change. Web 2.0 features present a new and innovative online environment supporting greater interactivity, with the potential to increase engagement and retention. In order to understand the applicability of these innovative interventions for the broader population, ‘real-world’ interventions implemented under ‘everyday conditions’ are required. The aim of this study is to investigate the difference in physical activity behaviour between individuals using a traditional Web 1.0 website with those using a novel Web 2.0 website. Methods and analysis In this study we will aim to recruit 2894 participants. Participants will be recruited from individuals who register with a pre-existing health promotion website that currently provides Web 1.0 features (http://www.10000steps.org.au). Eligible participants who provide informed consent will be randomly assigned to one of the two trial conditions: the pre-existing 10 000 Steps website (with Web 1.0 features) or the newly developed WALK 2.0 website (with Web 2.0 features). Primary and secondary outcome measures will be assessed by self-report at baseline, 3 months and 12 months, and include: physical activity behaviour, height and weight, Internet self-efficacy, website usability, website usage and quality of life. Ethics and dissemination This study has received ethics approval from the University of Western Sydney Human Research Ethics Committee (Reference Number H8767) and has been funded by the National Health and Medical Research Council (Reference Number 589903). Study findings will be disseminated widely through peer-reviewed publications, academic

  8. A Innovative Engineering Summer School V2.0

    DEFF Research Database (Denmark)

    Bennedsen, Jens; Larsen, Peter Gorm

    2010-01-01

    This article describes a summer school which focuses on a conceive-design project. The summer school has been run three times; each of the implementations is described. The last implementation (v2.0) is discussed and four challenges are identified and discussed in detail: assignments, the role...

  9. The tool for the automatic analysis of lexical sophistication (TAALES): version 2.0.

    Science.gov (United States)

    Kyle, Kristopher; Crossley, Scott; Berger, Cynthia

    2017-07-11

    This study introduces the second release of the Tool for the Automatic Analysis of Lexical Sophistication (TAALES 2.0), a freely available and easy-to-use text analysis tool. TAALES 2.0 is housed on a user's hard drive (allowing for secure data processing) and is available on most operating systems (Windows, Mac, and Linux). TAALES 2.0 adds 316 indices to the original tool. These indices are related to word frequency, word range, n-gram frequency, n-gram range, n-gram strength of association, contextual distinctiveness, word recognition norms, semantic network, and word neighbors. In this study, we validated TAALES 2.0 by investigating whether its indices could be used to model both holistic scores of lexical proficiency in free writes and word choice scores in narrative essays. The results indicated that the TAALES 2.0 indices could be used to explain 58% of the variance in lexical proficiency scores and 32% of the variance in word-choice scores. Newly added TAALES 2.0 indices, including those related to n-gram association strength, word neighborhood, and word recognition norms, featured heavily in these predictor models, suggesting that TAALES 2.0 represents a substantial upgrade.

  10. MetaRanker 2.0: a web server for prioritization of genetic variation data.

    Science.gov (United States)

    Pers, Tune H; Dworzyński, Piotr; Thomas, Cecilia Engel; Lage, Kasper; Brunak, Søren

    2013-07-01

    MetaRanker 2.0 is a web server for prioritization of common and rare frequency genetic variation data. Based on heterogeneous data sets including genetic association data, protein-protein interactions, large-scale text-mining data, copy number variation data and gene expression experiments, MetaRanker 2.0 prioritizes the protein-coding part of the human genome to shortlist candidate genes for targeted follow-up studies. MetaRanker 2.0 is made freely available at www.cbs.dtu.dk/services/MetaRanker-2.0.

  11. Study of electrical and magnetic properties of Pr0.6-xBixSr0.4MnO3 (x=0.20 and 0.25)

    Science.gov (United States)

    Daivajna, Mamatha D.; Rao, Ashok; Lin, W. J.; Kuo, Y. K.

    2017-06-01

    We have investigated the electrical and magnetic properties of Pr0.6-xBixSr0.4MnO3 (x=0.20 and 0.25) manganites. XRD data shows that the synthesized samples are single-phase and crystallize in the orthorhombic structure with Pnma space group. Resistivity measurements show that the sample with x=0.25 exhibits a thermally activated behavior for the entire temperature range. The magnetoresistance (MR) for the x=0.25 sample is as high as nearly 100% over a wide range of temperature, demonstrating its important technological application as a material for MR-based devices. From the magnetization measurements, two magnetic transitions viz. paramagnetic insulating to ferromagnetic metallic (PMI-FMM) transition at TC and the ferromagnetic metallic (FMM) to antiferromagnetic insulating (AFI) transition at Neel temperature TN were observe in both samples. The Curie temperature decreases with bismuth doping, while TN increases with Bi content. Most interestingly, the temperature variation of magnetization and resistivity shows hysteresis behavior across the transition for the x=0.20 sample.

  12. GStat 2.0: Grid Information System Status Monitoring

    International Nuclear Information System (INIS)

    Field, Laurence; Huang, Joanna; Tsai, Min

    2010-01-01

    Grid Information Systems are mission-critical components in today's production grid infrastructures. They enable users, applications and services to discover which services exist in the infrastructure and further information about the service structure and state. It is therefore important that the information system components themselves are functioning correctly and that the information content is reliable. Grid Status (GStat) is a tool that monitors the structural integrity of the EGEE information system, which is a hierarchical system built out of more than 260 site-level and approximately 70 global aggregation services. It also checks the information content and presents summary and history displays for Grid Operators and System Administrators. A major new version, GStat 2.0, aims to build on the production experience of GStat and provides additional functionality, which enables it to be extended and combined with other tools. This paper describes the new architecture used for GStat 2.0 and how it can be used at all levels to help provide a reliable information system.

  13. Web 2.0 Solutions to Wicked Climate Change Problems

    Directory of Open Access Journals (Sweden)

    Alanah Kazlauskas

    2010-01-01

    Full Text Available One of the most pressing ‘wicked problems’ facing humankind is climate change together with its many interrelated environmental concerns. The complexity of this set of problems can be overwhelming as there is such diversity among both the interpretations of the scientific evidence and the viability of possible solutions. Among the social technologies associated with the second generation of the Internet known as Web 2.0, there are tools that allow people to communicate, coordinate and collaborate in ways that reduce their carbon footprint and a potential to become part of the climate change solution. However the way forward is not obvious or easy as Web 2.0, while readily accepted in the chaotic social world, is often treated with suspicion in the more ordered world of business and government. This paper applies a holistic theoretical sense-making framework to research and practice on potential Web 2.0 solutions to climate change problems. The suite of issues, activities and tools involved are viewed as an ecosystem where all elements are dynamic and inter-related. Through such innovative thinking the Information Systems community can make a valuable contribution to a critical global problem and hence find a new relevance as part of the solution.

  14. Laponite Na+0.7[(Si8Mg5.5Li0.3)O20(OH)4]–0.7

    Indian Academy of Sciences (India)

    Si8Mg5.5Li0.3)O20(OH)4]–0.7. Negative charges are counterbalanced by Na+ ions present in the interlayer. Electrostatic screening length at pH 10 ≈30 nm. Effective maximum volume increases by a factor of 60. Thus, for less than 1 volume ...

  15. Containment Loads Analysis for CANDU6 Reactor using CONTAIN 2.0

    International Nuclear Information System (INIS)

    Kim, Tae H.; Yang, Chae Y.

    2013-01-01

    The containment plays an important role to limit the release of radioactive materials to the environment during design basis accidents (DBAs). Therefore, the containment has to maintain its integrity under DBA conditions. Generally, a containment functional DBA evaluation includes calculations of the key containment loads, i. e., pressure and temperature effects associated with a postulated large rupture of the primary or secondary coolant system piping. In this paper, the behavior of containment pressure and temperature was evaluated for loss of coolant accidents (LOCAs) of the Wolsong unit 1 in order to assess the applicability of CONTAIN 2.0 code for the containment loads analysis of the CANDU6 reactor. The containment pressure and temperature of the Wolsong unit 1 were evaluated using the CONTAIN 2.0 code and the results were compared with the CONTEMPT4 code. The peak pressure and temperature calculated by CONTAIN 2.0 agreed well with those of CONTEMPT4 calculation. The overall result of this analysis shows that the CONTAIN 2.0 code can apply to the containment loads analysis for the CANDU6 reactor

  16. RSAC 6.2 with WinRP 2.0 User Manual

    Energy Technology Data Exchange (ETDEWEB)

    Bradley Schrader

    2005-09-01

    The Radiological Safety Analysis Computer Program (RSAC-6.2) calculates the consequences of a release of radionuclides to the atmosphere. Using a personal computer, a user can generate a fission product inventory from either reactor operating history or a nuclear criticality accident. RSAC-6.2 models the effects of high-efficiency particulate air filters or other cleanup systems and calculates decay and ingrowth during transport through processes, facilities, and the environment. Doses are calculated for resuspension, inhalation, immersion, ground surface, and ingestion pathways. WinRP 2.0, a windows based overlay to RSAC-6.2, assists users in creating and running RSAC-6.2 input files. This users manual contains the mathematical models and operating instructions for RSAC-6.2 and WinRP 2.0. Instructions, screens, and examples are provided to guide the user through the functions provided by RSAC-6.2 and WinRP 2.0. These programs are designed for users who are familiar with radiological dose assessment methods.

  17. Risk Management in Future Romanian E-Government 2.0 Projects

    Directory of Open Access Journals (Sweden)

    Didraga Otniel

    2015-08-01

    Full Text Available E-government public services in Romania must follow unitary procedures considering the new requirements of the European Union from the Digital Agenda for Europe Strategy 2020. E-government 2.0 has to be implemented because of the cultural and behavioral transformations in the interaction between governments and users of e-services. E-government 2.0 projects use tools and techniques of social media to accomplish their goals. This article examines the possible risk categories and the risk management procedures needed to mitigate risks in future Romanian e-government projects, according to the strategic lines of development for the Digital Agenda. We propose a risk management plan for the e-government lines of action within the strategic lines of development that includes identifying, assessing, and mitigating the risks. New and modernized government services through e-government 2.0 projects that apply risk management will bring a significant improvement in how citizens and businesses relate to government and will increase the use of e-government services.

  18. Syntheses of amine-type adsorbents with emulsion graft polymerization of glycidyl methacrylate

    International Nuclear Information System (INIS)

    Seko, N.; Bang, L.T.; Tamada, M.

    2007-01-01

    Glycidyl methacrylate (GMA) which was precursor monomer for the synthesis of metal ion adsorbent was emulsified by surfactant of Tween 20 (Tw-20). The emulsion of 5% GMA in the water was stable for 48 h at Tw-20 concentration of 0.5%. Graft polymerization of GMA on polyethylene fiber was carried out in the emulsion state at various pre-irradiation doses. Degree of grafting (Dg) reached 103%, 301% and 348% for 1 h grafting at 40 deg. C with pre-irradiation of 10, 30 and 40 kGy, respectively. But the Dg was depressed when the pre-irradiation dose was over 50 kGy since cross-linking occurred simultaneously in the trunk polymer. Dg decreased with increment of Tw-20 concentration in emulsion of 5% GMA at pre-irradiation of 40 kGy. The three kinds of amine-type adsorbents were synthesized by reacting diethylenetriamine (DETA), triethylenetetramine (TETA) and ethylenediamine (EDA) with GMA-grafted polyethylene fiber. The synthesized EDA-type adsorbent had the highest selectivity against U ion and the distribution coefficient was 2.0 x 10 6

  19. DISTANCE AND KINEMATICS OF THE TW HYDRAE ASSOCIATION FROM PARALLAXES

    Energy Technology Data Exchange (ETDEWEB)

    Weinberger, Alycia J.; Boss, Alan P. [Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road NW, Washington, DC 20015 (United States); Anglada-Escude, Guillem, E-mail: weinberger@dtm.ciw.edu [Institut fuer Astrophysik, Universitaet Goettingen, Friedrich-Hund-Platz 1, 37077 Goettingen (Germany)

    2013-01-10

    From common proper motion and signatures of youth, researchers have identified about 30 members of a putative TW Hydrae Association. Only four of these had parallactic distances from Hipparcos. We have measured parallaxes and proper motions for 14 primary members. We combine these with literature values of radial velocities to show that the Galactic space motions of the stars, with the exception of TWA 9 and 22, are parallel and do not indicate convergence at a common formation point sometime in the last few million years. The space motions of TWA 9 and 22 do not agree with the others and indicate that they are not TWA members. The median parallax is 18 mas or 56 pc. We further analyze the stars' absolute magnitudes on pre-main-sequence evolutionary tracks and find a range of ages with a median of 10.1 Myr and no correlation between age and Galactic location. The TWA stars may have formed from an extended and filamentary molecular cloud but are not necessarily precisely coeval.

  20. Web 2.0 technologies at school: formal and informal learning strategies

    Directory of Open Access Journals (Sweden)

    Davide Parmigiani

    2012-08-01

    Full Text Available Questo articolo presenta uno studio che focalizza le strategie di apprendimento degli alunni della scuola secondaria di primo grado che utilizzano frequentemente le tecnologie e il web 2.0. La ricerca è stata strutturata su tre questioni fondamentali: l’utilizzo del web 2.0 e dei social network supporta negli alunni la motivazione allo studio, la pianificazione e l’autoregolazione dei propri processi di apprendimento e, infine, l’utilizzo di strategie funzionali allo studio? Lo studio sottolinea che alcune potenzialità delle applicazioni 2.0 sono utili per allenare gli alunni ad usare strategie cognitive efficaci, se sostenute da una progettazione e da modelli didattici aperti al problem-solving e alla ricerca-azione.

  1. Early onset and severe clinical course associated with the m.5540G>A mutation in MT-TW

    Directory of Open Access Journals (Sweden)

    Jorge L. Granadillo

    2014-01-01

    Full Text Available We report a patient harboring a de novo m.5540G>A mutation affecting the MT-TW gene coding for the mitochondrial tryptophan-transfer RNA. This patient presented with atonic–myoclonic epilepsy, bilateral sensorineural hearing loss, ataxia, motor regression, ptosis, and pigmentary retinopathy. Our proband had an earlier onset and more severe phenotype than the first reported patient harboring the same mutation. We discuss her clinical presentation and compare it with the only previously published case.

  2. Can Web 2.0 shape meta-memory?

    OpenAIRE

    Sá, Alberto

    2009-01-01

    The social features of recent Web 2.0 technologies applications can bear a strong relationship to memory production and can help to shape personal identity through emotional connections by synchronizing people’s subjective experiences. When added to life, the proliferation of mechanical memory, experienced and produced by technology, makes for a new type of shared awareness. Therefore, we should look at these tools as instruments of reminiscence and as creative mnemonic aids. The input of ...

  3. The Usage of Web 2.0 as a Media Promotion in Indonesia University Libraries

    Directory of Open Access Journals (Sweden)

    Nove E. Variant Anna

    2015-04-01

    Full Text Available The usage of web 2.0 has become popular among young people in Indonesia. One of the purpose of using web 2.0 is for promotion in some university libraries. The emerging of the web 2.0 as promotional media is corelating with the development of digital library. The paper aims are (1 to describe the usage of web 2.0 for academic libraries promotion. (2 to describe the information / content of those web 2.0. (3 to describe the promotion activity through web 2.0. This research population is all university libraries in Indonesia, but only 40 university libraries that conduct promotion through web 2.0. The website observation is done between May-July 2013. The research results are (1 the university libraries in Indonesia are use facebook, twitter, and flicker to promote library programs and interaction with users. The web 2.0 consist of information about new book release, user education, general information about library services, and information literacy. (3 some of univerity libraries taking seriously and actively promote their library services, but some of them are don’t use the web 2.0.

  4. The Usage of Web 2.0 as a Media Promotion in Indonesia University Libraries

    Directory of Open Access Journals (Sweden)

    Nove E. Variant Anna

    2018-01-01

    Full Text Available The usage of web 2.0 has become popular among young people in Indonesia. One of the purpose of using web 2.0 is for promotion in some university libraries. The emerging of the web 2.0 as promotional media is corelating with the development of digital library. The paper aims are (1 to describe the usage of web 2.0 for academic libraries promotion. (2 to describe the information / content of those web 2.0. (3 to describe the promotion activity through web 2.0. This research population is all university libraries in Indonesia, but only 40 university librraries that conduct promotion through web 2.0. The website observation is done between May-July 2013. The research results are (1 the university libraries in Indonesia are use facebook, twitter, and flikr to promote library programs and interaction with users. The web 2.0 consist of information about new book release, user education, general information about library services, and information literacy. (3 some of univerity libraries taking seriously and actively promote their library services, but some of them are don’t use the web 2.0.

  5. Model-Based Spectrum Management. Part 1: Modeling and Computation Manual, Version 2.0

    Science.gov (United States)

    2013-12-01

    Frequency list : ( 790.0125, 790.0375, 790.0525, … , 794.9875) (i.e. signals spaced every 25 kHz starting at 790.0125 MHz and ending at 794.9875...20 dB below peak. When a frequency list is used, this bandwidth is applied for every signal within the range. When a signal falls partially in the...power is 0 2 dBm Hz m⋅ . System 1 Spectrum mask: (-0.0125, -20, -0.0075, 0, 0.00750, 0, 0.0125, -20) Frequency list : ( 190.0125, 190.0375

  6. Collaborative learning through advanced Web2.0 practices

    DEFF Research Database (Denmark)

    Tambouris, Efthimios; Panopoulou, Eleni; Tarabanis, Konstantinos

    2010-01-01

    Latest advances in ICT have started impacting also the field of education and training. Social computing and Web2.0 technologies have brought vigorous opportunities for learning and have realised a shift of the web‟s role in learning from an information carrier to a facilitator for the creation...

  7. Integration of Web 2.0 Tools in Learning a Programming Course

    Science.gov (United States)

    Majid, Nazatul Aini Abd

    2014-01-01

    Web 2.0 tools are expected to assist students to acquire knowledge effectively in their university environment. However, the lack of effort from lecturers in planning the learning process can make it difficult for the students to optimize their learning experiences. The aim of this paper is to integrate Web 2.0 tools with learning strategy in…

  8. Web 2.0 Technologies and Building Online Learning Communities: Students' Perspectives

    Science.gov (United States)

    Abdelmalak, Mariam Mousa Matta

    2015-01-01

    The purpose of this action research was to explore students' perspectives regarding using Web 2.0 technologies to develop a community of learners. The course described in this study was a fully online course in an Educational Learning Technologies master's program at a medium-sized university in the U.S. Southwest. A variety of Web 2.0 tools…

  9. Investigating the Use of Web 2.0 Technology by Malaysian Students

    Science.gov (United States)

    Zakaria, Mohd Hafiz; Watson, Jason; Edwards, Sylvia L.

    2010-01-01

    Purpose: Many research have uncovered the use of Web 2.0 technology by students from various countries. Yet, limited studies have been done from the context of developing country such as Malaysia. This paper aims to highlight the development of a survey instrument that captured the use of Web 2.0 applications by Malaysian students for learning.…

  10. Ethics from Web 1.0 to Web 2.0: Standing outside the Box

    Science.gov (United States)

    Harris, Frances Jacobson

    2009-01-01

    In today's schools and library media centers, emotion-laden concerns about new modes of information and communication technology can hijack librarians' attention, even taking center stage. Something about the online revolution and, more recently, the advent of Web 2.0 tools and their ability to create connections among users, as well as between…

  11. Building a dynamically ASP.NET 2.0 GridView control

    OpenAIRE

    Catalin NACHILA

    2008-01-01

    Microsoft Visual Studio 2005 (based on ASP.NET 2.0), the successor to Visual Studio .NET 2003 has a lot of new features and goodies designed for Web developers. This article show how a ASP.NET 2.0 control can be dynamically connected to Microsoft Access database. The delete and update operation will be implemented using a GridView control and SQL queries. The connection between the database and the .NET application will be made with OleDb Data provider, the new Access Data Source control. The...

  12. Supporting teachers integrating web 2.0 in a Problem Based Learning approach

    DEFF Research Database (Denmark)

    Buus, Lillian

    2010-01-01

    Based on theoretical and methodological considerations within problem-based learning (PBL), web 2.0 technologies and learning designs, the article try to illustrate a design model for supporting teachers in their learning design trying to integrate web 2.0 technologies into their PBL approach...... that a transition from curriculum-based teaching to PBL entails a movement from a teacher-centered approach to a learner-centered approach [4],[5]. This move can in many ways be compared to the conceptual move from web 1.0 to web 2.0 that by some is seen as a transition from ‘users/learners as consumers’ towards...... ‘users/learners as producers’ [6]. Consequently, it makes good sense to connect Web 2.0 with a problem-based approach to learning. Therefore it’s interesting to look upon a learning design model supporting teachers at AAU in their pedagogical design combining these two. The Collaborative E...

  13. Bibliotecas universitárias portuguesas no universo da web 2.0Portuguese academic libraries in the web 2.0 universe

    Directory of Open Access Journals (Sweden)

    Alexandra Santos

    2010-01-01

    Full Text Available A agregação das designadas tecnologias da Web 2.0 aos serviços materializados nos Websites e nos portais das grandes instituições tem provocado um forte impacto, em particular, no plano da concepção dos serviços, do marketing e da aprendizagem social. O presente artigo analisa um sector tradicional como sãos as bibliotecas, mas no seio de um ambiente inovador e exigente como as universidades, no sentido de identificar como estará este conceito e recurso a ser adoptado nas bibliotecas das universidades portuguesas. Adoptando a metodologia de estudo de caso e recorrendo à revisão bibliográfica para identificar plataformas e produtos Web 2.0 foi construída uma grelha de análise dos Websites das bibliotecas das universidades portuguesas, onde são contempladas algumas plataformas de publicação, discussão, partilha, relacionamento, agregação e colaboração, analisáveis no plano do seu acesso, participação e edição de conteúdos, sejam eles feitos exclusivamente pela instituição, ou pelos próprios utilizadores. Com base nesta análise foi possível concluir que as bibliotecas das universidades portuguesas ainda não adoptaram uma cultura organizacional que incorpore plenamente este tipo de plataformas, apesar de todas as potencialidades que delas podem advir no plano do desenvolvimento da inteligência colectiva.The aggregation of the so called Web 2.0 technologies to the materialized services in the great institutions websites and portals is causing an enormous impact, particularly on the level of service conceptions, marketing and social learning. In a traditional sector such as the library’s, but also within the universities progressive environment, how are this concept and this resource being adopted by portuguese academic libraries? Applying case study methodology and using bibliographic revision in order to identify platforms and web 2.0 products, an analysis grid of the portuguese academic and libraries websites

  14. Comparison of lung preservation solutions in human lungs using an ex vivo lung perfusion experimental model

    Directory of Open Access Journals (Sweden)

    Israel L. Medeiros

    2012-09-01

    Full Text Available OBJECTIVE: Experimental studies on lung preservation have always been performed using animal models. We present ex vivo lung perfusion as a new model for the study of lung preservation. Using human lungs instead of animal models may bring the results of experimental studies closer to what could be expected in clinical practice. METHOD: Brain-dead donors whose lungs had been declined by transplantation teams were used. The cases were randomized into two groups. In Group 1, Perfadex®was used for pulmonary preservation, and in Group 2, LPDnac, a solution manufactured in Brazil, was used. An ex vivo lung perfusion system was used, and the lungs were ventilated and perfused after 10 hours of cold ischemia. The extent of ischemic-reperfusion injury was measured using functional and histological parameters. RESULTS: After reperfusion, the mean oxygenation capacity was 405.3 mmHg in Group 1 and 406.0 mmHg in Group 2 (p = 0.98. The mean pulmonary vascular resistance values were 697.6 and 378.3 dyn·s·cm-5, respectively (p =0.035. The mean pulmonary compliance was 46.8 cm H20 in Group 1 and 49.3 ml/cm H20 in Group 2 (p =0.816. The mean wet/dry weight ratios were 2.06 and 2.02, respectively (p=0.87. The mean Lung Injury Scores for the biopsy performed after reperfusion were 4.37 and 4.37 in Groups 1 and 2, respectively (p = 1.0, and the apoptotic cell counts were 118.75/mm² and 137.50/mm², respectively (p=0.71. CONCLUSION: The locally produced preservation solution proved to be as good as Perfadex®. The clinical use of LPDnac may reduce costs in our centers. Therefore, it is important to develop new models to study lung preservation.

  15. Do College Faculty Embrace Web 2.0 Technology?

    Science.gov (United States)

    Siha, Samia M.; Bell, Reginald Lamar; Roebuck, Deborah

    2016-01-01

    The authors sought to determine if Rogers's Innovation Decision Process model could analyze Web 2.0 usage within the collegiate environment. The key independent variables studied in relationship to this model were gender, faculty rank, course content delivery method, and age. Chi-square nonparametric tests on the independent variables across…

  16. Web 2.0 Technologies: Applications for Community Colleges

    Science.gov (United States)

    Bajt, Susanne K.

    2011-01-01

    The current generation of new students, referred to as the Millennial Generation, brings a new set of challenges to the community college. The influx of these technologically sophisticated students, who interact through the social phenomenon of Web 2.0 technology, bring expectations that may reshape institutions of higher learning. This chapter…

  17. Ciberactivismo y solidaridad social en la web 2.0: “el Desafío Levantemos Chile” en la red social Facebook.

    Directory of Open Access Journals (Sweden)

    Álvaro Elgueta Ruiz

    2013-08-01

    Full Text Available El siguiente artículo presenta los resultados de una investigación que analiza durante dos meses el uso dado por los administradores a la fanspage del “Desafío Levantemos Chile” en la Red Social Facebook, con el objeto de comprender y valorar las nuevas formas de comunicación a través de Internet con fines de activismo social y/o ciberactivismo. A través de un diseño no experimental ex post facto, mediante entrevistas en profundidad a los encargados de la campaña digital y a un comunicador experto en nuevos medios; más un análisis de contenido de la cuenta de Facebook de esta iniciativa, se apreciaron las características en el uso y manejo dado por éstos en dicha plataforma. Entre los hallazgos destaca que los encargados de la campaña digital coinciden en los múltiples beneficios que ofrece la web 2.0, entre los que destacan su gratuidad, alcance y masividad. Sin embargo, la falta de una estrategia integral en la preparación y control de los contenidos publicados hizo que este sitio resultara insuficiente para viralizar la causa ciberactivista. Finalmente, con este estudio se busca reflexionar sobre las posibilidades de movilización de la web 2.0 y, en especial, de los Sitios de Redes Sociales.

  18. Glass transition behavior and crystallization kinetics of Cu0.3(SSe20)0.7 chalcogenide glass

    International Nuclear Information System (INIS)

    Soliman, A.A.

    2005-01-01

    The glass transition behavior and crystallization kinetics of Cu 0.3 (SSe 20 ) 0.7 chalcogenide glass were investigated using differential scanning calorimetry (DSC), X-ray diffraction (XRD). Two crystalline phases (SSe 20 and Cu 2 Se) were identified after annealing the glass at 773 K for 24 h. The activation energy of the glass transition (E g ), the activation energy of crystallization (E c ), the Avrami exponent (n) and the dimensionality of growth (m) were determined. Results indicate that this glass crystallizes by a two-stage bulk crystallization process upon heating. The first transformation, in which SSe 20 precipitates from the amorphous matrix with a three-dimensional crystal growth. The second transformation, in which the residual amorphous phase transforms into Cu 2 Se compound with a two-dimensional crystal growth

  19. Validation of the 36-item version of the WHO Disability Assessment Schedule 2.0 (WHODAS 2.0) for assessing women's disability and functioning associated with maternal morbidity.

    Science.gov (United States)

    Silveira, Carla; Parpinelli, Mary Angela; Pacagnella, Rodolfo Carvalho; Andreucci, Carla Betina; Angelini, Carina Robles; Ferreira, Elton Carlos; Cecatti, José Guilherme

    2017-02-01

    Objective  To validate the translation and adaptation to Brazilian Portuguese of 36 items from the World Health Organizaton Disability Assessment Schedule 2.0 (WHODAS 2.0), regarding their content and structure (construct), in a female population after pregnancy. Methods  This is a validation of an instrument for the evaluation of disability and functioning and an assessment of its psychometric properties, performed in a tertiary maternity and a referral center specialized in high-risk pregnancies in Brazil. A sample of 638 women in different postpartum periods who had either a normal or a complicated pregnancy was included. The structure was evaluated by exploratory factor analysis (EFA) and confirmatory factor analysis (CFA), while the content and relationships among the domains were assessed through Pearson's correlation coefficient. The sociodemographic characteristics were identified, and the mean scores with their standard deviations for the 36 questions of the WHODAS 2.0 were calculated. The internal consistency was evaluated byCronbach's α. Results  Cronbach's α was higher than 0.79 for both sets of questons of the questionnaire. The EFA and CFA for the main 32 questions exhibited a total variance of 54.7% (Kaiser-Meyer-Olkin [KMO] measure of sampling adequacy =  0.934; p  < 0.001) and 53.47% (KMO = 0.934; p  < 0.001) respectively. There was a significant correlation among the 6 domains (r = 0.571-0.876), and a moderate correlation among all domains (r = 0.476-0.694). Conclusion  The version of the WHODAS 2.0 instrument adapted to Brazilian Portuguese showed good psychometric properties in this sample, and therefore could be applied to populations of women regarding their reproductive history. Thieme-Revinter Publicações Ltda Rio de Janeiro, Brazil.

  20. Immunohistochemical Expression of p53 in Pleomorphic Adenoma and Carcinoma Ex Pleomorphic Adenoma

    International Nuclear Information System (INIS)

    Tarakji, B.; Kujan, O.; Nassani, M. Z.

    2010-01-01

    Context. Immunohistochemical stains for p53 are used as a diagnostic marker associated with malignancy in several histologic types of salivary gland tumors. This marker may be useful in differentiating pleomorphic adenoma (PA) from carcinoma ex pleomorphic adenoma (CPA), as these tumors are often difficult to distinguish on the basis of morphology alone. Objective. to evaluate whatever inactivation of tumor suppressor gene (p53) increases with the tumor progression from normal salivary tissue to PA and eventually CPA. Design. Paraffin blocks of 29 cases of PA, which were surrounded by normal parotid gland, and 27 cases of carcinoma ex pleomorphic adenoma were retrieved and validated. In all cases of carcinoma ex pleomorphic adenoma, a PA “ghost” was identified, and the malignant element was either undifferentiated carcinoma or adenocarcinoma. Results. The results showed negative nuclear expression of P53 in normal parotid gland. Nuclear P53 was expressed strongly in 6/29 (20.7%) pleomorphic salivary adenoma and 10/27 (37%) carcinoma ex pleomorphic adenoma. Conclusion. Our data suggest that inactivation of p53 may play an important role in the evolution of pleomorphic salivary adenoma and carcinoma ex pleomorphic adenoma.

  1. High magnetic ordering temperature in the perovskites Sr{sub 4-x}La{sub x}Fe{sub 3}ReO{sub 12} (x=0.0, 1.0, 2.0)

    Energy Technology Data Exchange (ETDEWEB)

    Retuerto, M.; Li, M.-R.; Go, Y.B. [Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, NJ 08854 (United States); Ignatov, A.; Croft, M. [Department of Physics and Astronomy, Rutgers, The State University of New Jersey, 136 Frelinghuysen Road, Piscataway, NJ 08854 (United States); Ramanujachary, K.V. [Department of Chemistry and Physics, Rowan University, 210 Mullica Hill Road, Glassboro, NJ 08028 (United States); Herber, R.H.; Nowik, I. [Racah Institute of Physics, Hebrew University, Jerusalem, 91904 Israel (Israel); Hodges, J.P. [Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States); Dachraoui, W.; Hadermann, J. [EMAT, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp (Belgium); Greenblatt, M., E-mail: martha@rutchem.rutgers.edu [Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, NJ 08854 (United States)

    2012-10-15

    A series of perovskites Sr{sub 4-x}La{sub x}Fe{sub 3}ReO{sub 12} (x=0.0, 1.0, 2.0) has been prepared by wet chemistry methods. The structure analyses by powder X-ray and neutron diffraction and electron microscopy show that these compounds adopt simple perovskite structures without cation ordering over the B sites: tetragonal (I4/mcm) for x=0.0 and 1.0 and orthorhombic (Pbmn) for x=2.0. The oxidation states of the cations in the compound with x=0.0 appear to be Fe{sup 3+/4+} and Re{sup 7+} and decrease for both with La substitution as evidenced by X-ray absorption spectroscopy. All the compounds are antiferromagnetically ordered above room temperature, as demonstrated by Moessbauer spectroscopy and the magnetic structures, which were determined by powder neutron diffraction. The substitution of Sr by La strongly affects the magnetic properties with an increase of T{sub N} up to {approx}750 K. - Graphical abstract: High resolution transmission electron microscopy image of Sr{sub 4-x}La{sub x}Fe{sub 3}ReO{sub 12} (x=2.0), showing twin domains. Fourier transforms are given of the areas indicated by the circles. Highlights: Black-Right-Pointing-Pointer Sr{sub 4-x}La{sub x}Fe{sub 3}ReO{sub 12} (x=0.0, 1.0, 2.0) perovskites prepared by wet chemistry. Black-Right-Pointing-Pointer PXD, PND, ED, indicate no cation ordering, I4/mcm) for x=0.0, 1.0, Pbmn for x=2. Black-Right-Pointing-Pointer XAS show oxidation states Fe{sup 3+/4+} and Re{sup 7+}; both decrease with increasing x. Black-Right-Pointing-Pointer All order antiferromagnetically above RT, with highest T{sub N} {approx}750 K.

  2. Research, Collaboration, and Open Science Using Web 2.0

    Directory of Open Access Journals (Sweden)

    Kevin Shee

    2010-10-01

    Full Text Available There is little doubt that the Internet has transformed the world in which we live. Information that was once archived in bricks and mortar libraries is now only a click away, and people across the globe have become connected in a manner inconceivable only 20 years ago. Although many scientists and educators have embraced the Internet as an invaluable tool for research, education and data sharing, some have been somewhat slower to take full advantage of emerging Web 2.0 technologies. Here we discuss the benefits and challenges of integrating Web 2.0 applications into undergraduate research and education programs, based on our experience utilizing these technologies in a summer undergraduate research program in synthetic biology at Harvard University. We discuss the use of applications including wiki-based documentation, digital brainstorming, and open data sharing via the Web, to facilitate the educational aspects and collaborative progress of undergraduate research projects. We hope to inspire others to integrate these technologies into their own coursework or research projects.

  3. Web 2.0 and the Net Generation - A Critical Perspective

    DEFF Research Database (Denmark)

    Ryberg, Thomas

    2012-01-01

    In the recent years, social media and web 2.0 have been hot topics within educational debates and within the research area of networked learning. The latter is evident from symposia and papers from the last years' networked learning conferences, but also European research projects, special issues......, and books have revolved around social media, web 2.0, personal learning environments, student-centred learning, and student-generated content. Alongside these internet developments we have witnessed debates on what schools and universities can do to cater to the 'net-generation' or the 'digital natives' in...

  4. Changing Academic Teaching with Web 2.0 Technologies

    Science.gov (United States)

    Newland, Barbara; Byles, Linda

    2014-01-01

    Academic teaching can change with the use of Web 2.0 technologies, such as blogs and wikis, as these enable a different pedagogical approach through collaborative learning and the social construction of knowledge. Student expectations of their university learning experience have changed as they expect e-learning to be part of the learning…

  5. Ex vivo instability of glycated albumin: A role for autoxidative glycation.

    Science.gov (United States)

    Jeffs, Joshua W; Ferdosi, Shadi; Yassine, Hussein N; Borges, Chad R

    2017-09-01

    Ex vivo protein modifications occur within plasma and serum (P/S) samples due to prolonged exposure to the thawed state-which includes temperatures above -30 °C. Herein, the ex vivo glycation of human serum albumin from healthy and diabetic subjects was monitored in P/S samples stored for hours to months at -80 °C, -20 °C, and room temperature, as well as in samples subjected to multiple freeze-thaw cycles, incubated at different surface area-to-volume ratios or under different atmospheric compositions. A simple dilute-and-shoot method utilizing trap-and-elute LC-ESI-MS was employed to determine the relative abundances of the glycated forms of albumin-including forms of albumin bearing more than one glucose molecule. Significant increases in glycated albumin were found to occur within hours at room temperature, and within days at -20 °C. These increases continued over a period of 1-2 weeks at room temperature and over 200 days at -20 °C, ultimately resulting in a doubling of glycated albumin in both healthy and diabetic patients. It was also shown that samples stored at lower surface area-to-volume ratios or incubated under a nitrogen atmosphere experienced less rapid glucose adduction of albumin-suggesting a role for oxidative glycation in the ex vivo glycation of albumin. Copyright © 2017 Elsevier Inc. All rights reserved.

  6. Teaching MBA Students the Use of Web 2.0: The Knowledge Management Perspective

    Science.gov (United States)

    Levy, Meira; Hadar, Irit

    2010-01-01

    The new concepts and technologies of Web 2.0 attract researches in a variety of fields including education, business and knowledge management. However, while the Web 2.0 potential in the education discipline has been widely studied, in the management discipline the Web 2.0 business value has not been fully acknowledged. This research suggests an…

  7. Transmission-line-circuit model of an 85-TW, 25-MA pulsed-power accelerator

    Science.gov (United States)

    Hutsel, B. T.; Corcoran, P. A.; Cuneo, M. E.; Gomez, M. R.; Hess, M. H.; Hinshelwood, D. D.; Jennings, C. A.; Laity, G. R.; Lamppa, D. C.; McBride, R. D.; Moore, J. K.; Myers, A.; Rose, D. V.; Slutz, S. A.; Stygar, W. A.; Waisman, E. M.; Welch, D. R.; Whitney, B. A.

    2018-03-01

    configurations and load-impedance time histories. For these experiments, the apparent fractional current loss varies from 0% to 20%. Results of the circuit simulations agree with data acquired on 52 shots to within 2%.

  8. Transmission-line-circuit model of an 85-TW, 25-MA pulsed-power accelerator

    Directory of Open Access Journals (Sweden)

    B. T. Hutsel

    2018-03-01

    variety of accelerator configurations and load-impedance time histories. For these experiments, the apparent fractional current loss varies from 0% to 20%. Results of the circuit simulations agree with data acquired on 52 shots to within 2%.

  9. Microdosimetry of 0.5 to 2.0 MeV electron beams

    International Nuclear Information System (INIS)

    Braby, L.A.; Roesch, W.C.

    1980-08-01

    The energy imparted in microscopic volumes by electron beams with initial energies from 0.5 to 2.0 MeV has been measured at various depths in plastic. The problems associated with measuring energy deposition spectra of low LET radiations are serious, but the potential importance of these measurements in radiation biophysics justifies the effort required to obtain them. Recent results obtained by Goodhead et al. indicate an RBE greater than 2 for 0.3 keV x-rays compared to 250 kV x-rays, and our results with Chlamydomonas reinhardi indicate an RBE of 1.6 for a 1.5 MeV electron beam at a depth of 400 gm/cm 2 in lucite compared to the same beam at the surface. Development of a theory which appears to explain these results in terms of the microscopic distribution of energy deposition has motivated a detailed study of energy deposition spectra for an electron beam attenuated by various thicknesses of lucite. Simulated sites from 0.5 to 1.9 μm in diameter were studied. The values of anti y determined in these single event measurements compare favorably with those calculated from direct measurements of z reported previously. As expected, the means of the distributions increase significantly with increasing depth in an absorber

  10. GEM Building Taxonomy (Version 2.0)

    Science.gov (United States)

    Brzev, S.; Scawthorn, C.; Charleson, A.W.; Allen, L.; Greene, M.; Jaiswal, Kishor; Silva, V.

    2013-01-01

    This report documents the development and applications of the Building Taxonomy for the Global Earthquake Model (GEM). The purpose of the GEM Building Taxonomy is to describe and classify buildings in a uniform manner as a key step towards assessing their seismic risk, Criteria for development of the GEM Building Taxonomy were that the Taxonomy be relevant to seismic performance of different construction types; be comprehensive yet simple; be collapsible; adhere to principles that are familiar to the range of users; and ultimately be extensible to non-buildings and other hazards. The taxonomy was developed in conjunction with other GEM researchers and builds on the knowledge base from other taxonomies, including the EERI and IAEE World Housing Encyclopedia, PAGER-STR, and HAZUS. The taxonomy is organized as a series of expandable tables, which contain information pertaining to various building attributes. Each attribute describes a specific characteristic of an individual building or a class of buildings that could potentially affect their seismic performance. The following 13 attributes have been included in the GEM Building Taxonomy Version 2.0 (v2.0): 1.) direction, 2.)material of the lateral load-resisting system, 3.) lateral load-resisting system, 4.) height, 5.) date of construction of retrofit, 6.) occupancy, 7.) building position within a block, 8.) shape of the building plan, 9.) structural irregularity, 10.) exterior walls, 11.) roof, 12.) floor, 13.) foundation system. The report illustrates the pratical use of the GEM Building Taxonomy by discussing example case studies, in which the building-specific characteristics are mapped directly using GEM taxonomic attributes and the corresponding taxonomic string is constructed for that building, with "/" slash marks separating attributes. For example, for the building shown to the right, the GEM Taxonomy string is: DX1/MUR+CLBRS+MOCL2/LWAL3/

  11. Research on the Method of Enterprise Knowledge Management Based on Web 2.0

    Directory of Open Access Journals (Sweden)

    Le Chengyi

    2017-06-01

    Full Text Available [Purpose/significance] It is the key for the research of enterprise knowledge management to improve the efficiency of enterprise knowledge management by using the advantages of Web 2.0, such as its fastness, public participation and strong interaction. [Method/process] Based on the analysis of the characteristics and main technologies of Web 2.0, this paper discussed the role and application of Web 2.0 related technologies in the enterprise knowledge management, and then put forward the enterprise knowledge management methods based on Web 2.0, including knowledge acquisition method, knowledge classification and organization method, knowledge sharing and evaluation method by usingWeb2 .0. [Result/conclusion] Through the introduction of Web 2.0 related technologies into the knowledge management of enterprises, the research provides convenient and low-cost tools and methods for knowledge management related activities, and helps all users to participate in enterprise knowledge management activities quickly and easily.

  12. CCBuilder 2.0: Powerful and accessible coiled-coil modeling.

    Science.gov (United States)

    Wood, Christopher W; Woolfson, Derek N

    2018-01-01

    The increased availability of user-friendly and accessible computational tools for biomolecular modeling would expand the reach and application of biomolecular engineering and design. For protein modeling, one key challenge is to reduce the complexities of 3D protein folds to sets of parametric equations that nonetheless capture the salient features of these structures accurately. At present, this is possible for a subset of proteins, namely, repeat proteins. The α-helical coiled coil provides one such example, which represents ≈ 3-5% of all known protein-encoding regions of DNA. Coiled coils are bundles of α helices that can be described by a small set of structural parameters. Here we describe how this parametric description can be implemented in an easy-to-use web application, called CCBuilder 2.0, for modeling and optimizing both α-helical coiled coils and polyproline-based collagen triple helices. This has many applications from providing models to aid molecular replacement for X-ray crystallography, in silico model building and engineering of natural and designed protein assemblies, and through to the creation of completely de novo "dark matter" protein structures. CCBuilder 2.0 is available as a web-based application, the code for which is open-source and can be downloaded freely. http://coiledcoils.chm.bris.ac.uk/ccbuilder2. We have created CCBuilder 2.0, an easy to use web-based application that can model structures for a whole class of proteins, the α-helical coiled coil, which is estimated to account for 3-5% of all proteins in nature. CCBuilder 2.0 will be of use to a large number of protein scientists engaged in fundamental studies, such as protein structure determination, through to more-applied research including designing and engineering novel proteins that have potential applications in biotechnology. © 2017 The Authors Protein Science published by Wiley Periodicals, Inc. on behalf of The Protein Society.

  13. SOURCE 1ST 2.0: development and beta testing

    International Nuclear Information System (INIS)

    Barber, D.H.; Iglesias, F.C.; Hoang, Y.; Dickson, L.W.; Dickson, R.S.; Richards, M.J.; Gibb, R.A.

    1999-01-01

    SOURCE 1ST 2.0 is the Industry Standard fission product release code that is being developed by Ontario Power Generation, New Brunswick Power, Hydro-Quebec, and Atomic Energy of Canada Ltd. This paper is a report on recent progress on requirement specification, code development, and module verification and validation activities. The theoretical basis for each model in the code is described in a module Software Theory Manual. The development of SOURCE IST 2.0 has required code design decisions about how to implement the software requirements. Development and module testing of the β1 release of SOURCE IST 2.0 (released in July 1999) have led to some interesting insights into fission product release modelling. The beta testing process has allowed code developers and analysts to refine the software requirements for the code. The need to verify physical reference data has guided some decisions on the code and data structure design. Examples of these design decisions are provided. Module testing, and verification and validation activities are discussed. These activities include code-targeted testing, stress testing, code inspection, comparison of code with requirements, and comparison of code results with independent algebraic, numerical, or semi-algebraic calculations. The list of isotopes to be modelled by SOURCE IST 2.0 provides an example of a subset of a reference data set. Isotopes are present on the list for a variety of reasons: personnel or public dose, equipment dose (for environmental qualification), fission rate and actinide modelling, or stable (or long-lived) targets for activation processes. To accommodate controlled changes to the isotope list, the isotope list and associated nuclear data are contained in a reference data file. The questions of multiple computing platforms, and of Year 2000 compliance have been addressed by programming rules for the code. By developing and testing modules on most of the different platforms on which the code is intended

  14. Recruitment, screening, and baseline participant characteristics in the WALK 2.0 study: A randomized controlled trial using web 2.0 applications to promote physical activity.

    Science.gov (United States)

    Caperchione, Cristina M; Duncan, Mitch J; Rosenkranz, Richard R; Vandelanotte, Corneel; Van Itallie, Anetta K; Savage, Trevor N; Hooker, Cindy; Maeder, Anthony J; Mummery, W Kerry; Kolt, Gregory S

    2016-04-15

    To describe in detail the recruitment methods and enrollment rates, the screening methods, and the baseline characteristics of a sample of adults participating in the Walk 2.0 Study, an 18 month, 3-arm randomized controlled trial of a Web 2.0 based physical activity intervention. A two-fold recruitment plan was developed and implemented, including a direct mail-out to an extract from the Australian Electoral Commission electoral roll, and other supplementary methods including email and telephone. Physical activity screening involved two steps: a validated single-item self-report instrument and the follow-up Active Australia Questionnaire. Readiness for physical activity participation was also based on a two-step process of administering the Physical Activity Readiness Questionnaire and, where needed, further clearance from a medical practitioner. Across all recruitment methods, a total of 1244 participants expressed interest in participating, of which 656 were deemed eligible. Of these, 504 were later enrolled in the Walk 2.0 trial (77% enrollment rate) and randomized to the Walk 1.0 group (n = 165), the Walk 2.0 group (n = 168), or the Logbook group (n = 171). Mean age of the total sample was 50.8 years, with 65.2% female and 79.1% born in Australia. The results of this recruitment process demonstrate the successful use of multiple strategies to obtain a diverse sample of adults eligible to take part in a web-based physical activity promotion intervention. The use of dual screening processes ensured safe participation in the intervention. This approach to recruitment and physical activity screening can be used as a model for further trials in this area.

  15. Autoria na web 2.0 no contexto da educação e a ética dos hackers / Authoring on the web 2.0: educational view and hacker ethic

    Directory of Open Access Journals (Sweden)

    Marcia Izabel Fugisawa Souza

    2011-04-01

    Full Text Available Este artigo discute a importância do exercício da autoria em ambiente virtual da Web 2.0, considerando que se trata de fundamento essencial à aprendizagem no professor e no aluno. Autoria na Web 2.0 é apresentada como estratégia pedagógica para ambientes de aprendizagem virtuais, que se utilizam principalmente de ferramentas como blog, wiki e redes sociais. Embora não sejam determinantes essas tecnologias digitais são condicionantes para que a aprendizagem e a autoria ocorram. Autoria na Web 2.0, além do estabelecimento de novos aparatos tecnológicos, requer novos modos de produção, nos quais prevaleça a postura ética dos hackers, favorecendo a participação, a colaboração, a liberdade e o compartilhamento.AbstractThis article discusses the importance of the exercise of virtual environment authoring of Web 2.0, considering that this is the essential foundation learning in teacher and student. Authoring on Web 2.0 is presented as a pedagogical strategy for virtual learning environments, which mainly use tools like blog, wiki and social networking. Although these digital technologies conditions are not determining to occur for learning and authorship. Web 2.0 authoring, besides the establishment of new technological devices, requires new modes of production, in which prevails the ethical conduct of hackers, encouraging participation, collaboration, freedom and sharing.

  16. The effects of the pre-reversal ExB drift, the EIA asymmetry, and magnetic activity on the equatorial spread F during solar maximum

    Directory of Open Access Journals (Sweden)

    C.-C. Lee

    2005-03-01

    Full Text Available We use a digisonde at Jicamarca and a chain of GPS receivers on the west side of South America to investigate the effects of the pre-reversal enhancement (PRE in ExB drift, the asymmetry (Ia of equatorial ionization anomaly (EIA, and the magnetic activity (Kp on the generation of equatorial spread F (ESF. Results show that the ESF appears frequently in summer (November, December, January, and February and equinoctial (March, April, September, and October months, but rarely in winter (May, June, July, and August months. The seasonal variation in the ESF is associated with those in the PRE ExB drift and Ia. The larger ExB drift (>20m/s and smaller |Ia| (<0.3 in summer and equinoctial months provide a preferable condition to development the ESF. Conversely, the smaller ExB drift and larger |Ia| are responsible for the lower ESF occurrence in winter months. Regarding the effects of magnetic activity, the ESF occurrence decreases with increasing Kp in the equinoctial and winter months, but not in the summer months. Furthermore, the larger and smaller ExB drifts are presented under the quiet (Kp<3 and disturbed (Kp≥3 conditions, respectively. These results indicate that the suppression in ESF and the decrease in ExB drifts are mainly caused by the decrease in the eastward electric field.

  17. Introducing ADS 2.0

    Science.gov (United States)

    Accomazzi, Alberto; Kurtz, M. J.; Henneken, E. A.; Grant, C. S.; Thompson, D.; Luker, J.; Chyla, R.; Murray, S. S.

    2014-01-01

    In the spring of 1993, the Smithsonian/NASA Astrophysics Data System (ADS) first launched its bibliographic search system. It was known then as the ADS Abstract Service, a component of the larger Astrophysics Data System effort which had developed an interoperable data system now seen as a precursor of the Virtual Observatory. As a result of the massive technological and sociological changes in the field of scholarly communication, the ADS is now completing the most ambitious technological upgrade in its twenty-year history. Code-named ADS 2.0, the new system features: an IT platform built on web and digital library standards; a new, extensible, industrial strength search engine; a public API with various access control capabilities; a set of applications supporting search, export, visualization, analysis; a collaborative, open source development model; and enhanced indexing of content which includes the full-text of astronomy and physics publications. The changes in the ADS platform affect all aspects of the system and its operations, including: the process through which data and metadata are harvested, curated and indexed; the interface and paradigm used for searching the database; and the follow-up analysis capabilities available to the users. This poster describes the choices behind the technical overhaul of the system, the technology stack used, and the opportunities which the upgrade is providing us with, namely gains in productivity and enhancements in our system capabilities.

  18. Library 2.0 A New Service Model For Libraries

    Directory of Open Access Journals (Sweden)

    Agnes Erich

    2007-01-01

    Full Text Available The utilization of the new information and communication technologies implies a series of changes concerning the libraries. Currently it is spoken more and more about a new type of service offered by them, Library 2.0, which brings in foreground the user who becomes a modeler of the library services and resources. The information structures customer is not satisfied anymore by the unidirectional access to the resources, he wanted to be involved in the evaluation of them, making comments and sharing his ideas with another user. In this sense the library managers are looking for more efficient means to deliver services so that to obtain a proper feedback which enable them to take the best measures to make profitable them. Library 2.0 can be a solution for all these problems.

  19. Introducing MCgrid 2.0: Projecting cross section calculations on grids

    Science.gov (United States)

    Bothmann, Enrico; Hartland, Nathan; Schumann, Steffen

    2015-11-01

    MCgrid is a software package that provides access to interpolation tools for Monte Carlo event generator codes, allowing for the fast and flexible variation of scales, coupling parameters and PDFs in cutting edge leading- and next-to-leading-order QCD calculations. We present the upgrade to version 2.0 which has a broader scope of interfaced interpolation tools, now providing access to fastNLO, and features an approximated treatment for the projection of MC@NLO-type calculations onto interpolation grids. MCgrid 2.0 also now supports the extended information provided through the HepMC event record used in the recent SHERPA version 2.2.0. The additional information provided therein allows for the support of multi-jet merged QCD calculations in a future update of MCgrid.

  20. Decompression Retinopathy after ExPRESS Shunt Implantation for Steroid-Induced Ocular Hypertension: A Case Report

    Directory of Open Access Journals (Sweden)

    Khawla Abu Samra

    2011-01-01

    Full Text Available Purpose. To present a unique case of decompression retinopathy after the implantation of ExPRESS drainage device. Method. A 25-year-old female patient underwent implantation of ExPRESS drainage device in the left eye for the management of steroid-induced ocular hypertension. Results. On the postoperative day one, best-corrected visual acuity in the left eye was 20/50. Fundus examination revealed diffuse intraretinal hemorrhages, some white-centered, throughout the retina. There was also marked tortuosity to the retinal vasculature and no evidence of choroidal effusion. Intravenous fluorescein angiography and indocyanine green did not contribute to the aetiopathogenesis. Conclusion. Decompression retinopathy can occur following the implantation of ExPRESS drainage device. It is very important to be aware of this complication in patients with relatively high intraocular pressure who is planned for filtration surgery, including the ExPRESS implant.

  1. Synthetic Biology Open Language Visual (SBOL Visual) Version 2.0

    KAUST Repository

    Cox, Robert Sidney; Madsen, Curtis; McLaughlin, James; Nguyen, Tramy; Roehner, Nicholas; Bartley, Bryan; Bhatia, Swapnil; Bissell, Mike; Clancy, Kevin; Gorochowski, Thomas; Grunberg, Raik; Luna, Augustin; Le Novè re, Nicolas; Pocock, Matthew; Sauro, Herbert; Sexton, John T.; Stan, Guy-Bart; Tabor, Jeffrey J.; Voigt, Christopher A.; Zundel, Zach; Myers, Chris; Beal, Jacob; Wipat, Anil

    2018-01-01

    to produce a coherent language for expressing the structure and function of genetic designs. This document details version 2.0 of SBOL Visual, which builds on the prior SBOL Visual 1.0 standard by expanding diagram syntax to include functional interactions

  2. Web 2.0 usage among New Zealand learners: Findings on gender difference

    Directory of Open Access Journals (Sweden)

    Ning Wei

    Full Text Available In this paper, gender differences in Web 2.0 usage by postgraduate students in New Zealand are presented. 84 postgraduate students drawn from two different convenience samples were surveyed to discover the extent to which they used and were familiar with Web 2.0 applications. According to Cuadrado-García, Ruiz-Molina and Montoro-Pons (2010, p. 367, \\"men and women differ in their interaction with technology\\". In this study, gender differences in the use of different Web 2.0 applications and technologies have been considered. Whilst findings from this study are limited by the way in which the populations were sampled, the sample size and having a majority of international students with English as a second language, it is interesting to note that there were only minor differences between the ways in which male and female postgraduate students use Web 2.0 applications.

  3. WE-E-12A-01: Medical Physics 1.0 to 2.0: MRI, Displays, Informatics

    International Nuclear Information System (INIS)

    Pickens, D; Flynn, M; Peck, D

    2014-01-01

    Medical Physics 2.0 is a bold vision for an existential transition of clinical imaging physics in face of the new realities of value-based and evidence-based medicine, comparative effectiveness, and meaningful use. It speaks to how clinical imaging physics can expand beyond traditional insular models of inspection and acceptance testing, oriented toward compliance, towards team-based models of operational engagement, prospective definition and assurance of effective use, and retrospective evaluation of clinical performance. Organized into four sessions of the AAPM, this particular session focuses on three specific modalities as outlined below. MRI 2.0: This presentation will look into the future of clinical MR imaging and what the clinical medical physicist will need to be doing as the technology of MR imaging evolves. Many of the measurement techniques used today will need to be expanded to address the advent of higher field imaging systems and dedicated imagers for specialty applications. Included will be the need to address quality assurance and testing metrics for multi-channel MR imagers and hybrid devices such as MR/PET systems. New pulse sequences and acquisition methods, increasing use of MR spectroscopy, and real-time guidance procedures will place the burden on the medical physicist to define and use new tools to properly evaluate these systems, but the clinical applications must be understood so that these tools are use correctly. Finally, new rules, clinical requirements, and regulations will mean that the medical physicist must actively work to keep her/his sites compliant and must work closely with physicians to ensure best performance of these systems. Informatics Display 1.0 to 2.0: Medical displays are an integral part of medical imaging operation. The DICOM and AAPM (TG18) efforts have led to clear definitions of performance requirements of monochrome medical displays that can be followed by medical physicists to ensure proper performance. However

  4. WE-E-12A-01: Medical Physics 1.0 to 2.0: MRI, Displays, Informatics

    Energy Technology Data Exchange (ETDEWEB)

    Pickens, D [Vanderbilt Medical Center, Nashville, TN (United States); Flynn, M; Peck, D [Henry Ford Health System, Detroit, MI (United States)

    2014-06-15

    Medical Physics 2.0 is a bold vision for an existential transition of clinical imaging physics in face of the new realities of value-based and evidence-based medicine, comparative effectiveness, and meaningful use. It speaks to how clinical imaging physics can expand beyond traditional insular models of inspection and acceptance testing, oriented toward compliance, towards team-based models of operational engagement, prospective definition and assurance of effective use, and retrospective evaluation of clinical performance. Organized into four sessions of the AAPM, this particular session focuses on three specific modalities as outlined below. MRI 2.0: This presentation will look into the future of clinical MR imaging and what the clinical medical physicist will need to be doing as the technology of MR imaging evolves. Many of the measurement techniques used today will need to be expanded to address the advent of higher field imaging systems and dedicated imagers for specialty applications. Included will be the need to address quality assurance and testing metrics for multi-channel MR imagers and hybrid devices such as MR/PET systems. New pulse sequences and acquisition methods, increasing use of MR spectroscopy, and real-time guidance procedures will place the burden on the medical physicist to define and use new tools to properly evaluate these systems, but the clinical applications must be understood so that these tools are use correctly. Finally, new rules, clinical requirements, and regulations will mean that the medical physicist must actively work to keep her/his sites compliant and must work closely with physicians to ensure best performance of these systems. Informatics Display 1.0 to 2.0: Medical displays are an integral part of medical imaging operation. The DICOM and AAPM (TG18) efforts have led to clear definitions of performance requirements of monochrome medical displays that can be followed by medical physicists to ensure proper performance. However

  5. Web 2.0 - Lær dog af Obama!

    DEFF Research Database (Denmark)

    Ivang, Reimer

    2009-01-01

    At Obama vandt 2008 præsidentvalget ved at anvende web 2.0 teknologier, er ingen hemmelighed. Men hvordan gjorde han det? Og hvorfor var det så effektfuldt? Dette blogindlæg ser Obama efter i kortene, og kortlægger den læring, som danske virksomheder kan høste af den fantastiske strategi, Obama-k...

  6. Vertical Bridgman growth and characterization of Cd0.95-xMnxZn0.05Te (x=0.20, 0.30) single-crystal ingots

    Energy Technology Data Exchange (ETDEWEB)

    Bolotnikov, A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Kopach, V. [Brookhaven National Lab. (BNL), Upton, NY (United States); Kopach, O. [Brookhaven National Lab. (BNL), Upton, NY (United States); Shcherbak, L. [Brookhaven National Lab. (BNL), Upton, NY (United States); Fochuk, P. [Brookhaven National Lab. (BNL), Upton, NY (United States); Filonenko, S. [Brookhaven National Lab. (BNL), Upton, NY (United States); James, R. [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2017-08-01

    Solid-liquid phase transitions in Cd0.95-xMnxZn0.05Te alloys with x = 0.20 and 0.30 were investigated by differential thermal analysis (DTA). The heating/cooling rates were 5 and 10 K/min with a melt dwell time of 10, 30 and 60 minutes. Cd0.95-xMnxZn0.05Te (x=0.20, 0.30) single-crystal ingots were grown by the vertical Bridgman method guided using the DTA results. Te inclusions (1-20 microns), typical for CdTe and Cd(Zn)Te crystals, were observed in the ingots by infrared transmission microscopy. The measured X-ray diffraction patterns showed that all compositions are found to be in a single phase. Using current-voltage (I-V) measurements, the resistivity of the samples from each ingot was estimated to be about 105 Ohm·cm. The optical transmission analysis demonstrated that the band-gap width of the investigated ingots increased from 1.77 to 1.88 eV with the increase of the MnTe content from 20 to 30 mol. %.

  7. Exascale Co-Design Center for Materials in Extreme Environments (ExMatEx) Annual Report - Year 2

    Energy Technology Data Exchange (ETDEWEB)

    Germann, T. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Richards, D. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); McPherson, A. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Belak, J. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2013-11-25

    All activities of the Exascale Co-design Center for Materials in Extreme Environments (Ex- MatEx) are focused on the two ultimate goals of the project: (1) demonstrating and delivering a prototype scale-bridging materials science application based upon adaptive physics refinement, and (2) identifying the requirements for the exascale ecosystem that are necessary to perform computational materials science simulations (both single- and multi-scale). During the first year of ExMatEx, our focus was on establishing how we do computational materials science, by developing an initial suite of flexible proxy applications. These “proxy apps” are the primary vehicle for the co-design process, involving assessments and tradeoff evaluations both within the ExMatEx team, and with the entire exascale ecosystem. These interactions have formed the basis of our second year activities. The set of artifacts from these co-design interactions are the lessons learned, that are used to re-express the applications and algorithms within the context of emerging architectures, programming models, and runtime systems.

  8. Building a dynamically ASP.NET 2.0 GridView control

    Directory of Open Access Journals (Sweden)

    Catalin NACHILA

    2008-01-01

    Full Text Available Microsoft Visual Studio 2005 (based on ASP.NET 2.0, the successor to Visual Studio .NET 2003 has a lot of new features and goodies designed for Web developers. This article show how a ASP.NET 2.0 control can be dynamically connected to Microsoft Access database. The delete and update operation will be implemented using a GridView control and SQL queries. The connection between the database and the .NET application will be made with OleDb Data provider, the new Access Data Source control. The SQL queries will be implemented with OleDbCommand.

  9. Do you web 2.0? public libraries and social networking

    CERN Document Server

    Berube, Linda

    2011-01-01

    Web 2.0 technology is a hot topic at the moment, and public librarians in particular are beginning to feel the pressure to apply these tools. Indeed, Web 2.0 has the potential to transform library services, but only if the policy and strategy for those services are ready to be transformed. The author not only reviews these tools and provides practical advice and case studies on how they can be applied in the public library setting, but also recommends the policies and business cases that begin to create a new strategy for public libraries.particularly geared to the public library settingadvice

  10. Formal Semantics and Implementation of BPMN 2.0 Inclusive Gateways

    Science.gov (United States)

    Christiansen, David Raymond; Carbone, Marco; Hildebrandt, Thomas

    We present the first direct formalization of the semantics of inclusive gateways as described in the Business Process Modeling Notation (BPMN) 2.0 Beta 1 specification. The formal semantics is given for a minimal subset of BPMN 2.0 containing just the inclusive and exclusive gateways and the start and stop events. By focusing on this subset we achieve a simple graph model that highlights the particular non-local features of the inclusive gateway semantics. We sketch two ways of implementing the semantics using algorithms based on incrementally updated data structures and also discuss distributed communication-based implementations of the two algorithms.

  11. Towards Implementing Library 2.0 Model in Nigerian University ...

    African Journals Online (AJOL)

    It presents the key features of library 2.0, such as user centered, multi-media ... blogs and wikis, instant messaging (IM), podcasts, social networking, streaming media, ... Recommendations were therefore proffered to include; the partnership of ...

  12. Three Radial Gaps in the Disk of TW Hydrae Imaged with SPHERE

    Science.gov (United States)

    van Boekel, R.; Henning, Th.; Menu, J.; de Boer, J.; Langlois, M.; Müller, A.; Avenhaus, H.; Boccaletti, A.; Schmid, H. M.; Thalmann, Ch.; Benisty, M.; Dominik, C.; Ginski, Ch.; Girard, J. H.; Gisler, D.; Lobo Gomes, A.; Menard, F.; Min, M.; Pavlov, A.; Pohl, A.; Quanz, S. P.; Rabou, P.; Roelfsema, R.; Sauvage, J.-F.; Teague, R.; Wildi, F.; Zurlo, A.

    2017-03-01

    We present scattered light images of the TW Hya disk performed with the Spectro-Polarimetric High-contrast Exoplanet REsearch instrument in Polarimetric Differential Imaging mode at 0.63, 0.79, 1.24, and 1.62 μm. We also present H2/H3-band angular differential imaging (ADI) observations. Three distinct radial depressions in the polarized intensity distribution are seen, around ≈85, ≈21, and ≲6 au.21 The overall intensity distribution has a high degree of azimuthal symmetry; the disk is somewhat brighter than average toward the south and darker toward the north-west. The ADI observations yielded no signifiant detection of point sources in the disk. Our observations have a linear spatial resolution of 1-2 au, similar to that of recent ALMA dust continuum observations. The sub-micron-sized dust grains that dominate the light scattering in the disk surface are strongly coupled to the gas. We created a radiative transfer disk model with self-consistent temperature and vertical structure iteration and including grain size-dependent dust settling. This method may provide independent constraints on the gas distribution at higher spatial resolution than is feasible with ALMA gas line observations. We find that the gas surface density in the “gaps” is reduced by ≈50% to ≈80% relative to an unperturbed model. Should embedded planets be responsible for carving the gaps then their masses are at most a few 10 {{{M}}}\\oplus . The observed gaps are wider, with shallower flanks, than expected for planet-disk interaction with such low-mass planets. If forming planetary bodies have undergone collapse and are in the “detached phase,” then they may be directly observable with future facilities such as the Mid-Infrared E-ELT Imager and Spectrograph at the E-ELT.

  13. Assessment of exposure to traffic pollution using the ExTra index: study of validation

    International Nuclear Information System (INIS)

    Reungoat, Patrice; Chiron, Mireille; Gauvin, Stephanie; Le Moullec, Y.; Momas, Isabelle

    2003-01-01

    The ExTra index, produced by the French Scientific Center for Building Physics, evaluates ambient concentrations of transport-related pollutants in front of the work and living places of urban dwellers. This study contributes to the validation of the ExTra index by carrying out measurements in four French cities. It compares nitrogen oxide concentrations (NO x ) measured over 6 weeks with passive samplers, and NO x calculated concentrations using the ExTra index. The study takes into account traffic density, topographical parameters (building height, road, and pavement width), weather conditions (wind direction and strength), and background pollution levels. The model was tested at 100 street canyons sites. There were highly significant correlations (0.90 in Grenoble, 0.95 in Nice, 0.89 in Paris, and 0.89 in Toulouse) and good intraclass correlation coefficients (0.75 in Grenoble, 0.91 in Nice, 0.89 in Paris, and 0.86 in Toulouse) between the two series of values. These results suggest that if the ExTra index were to be applied to all the different residences and workplaces of a subject throughout his (her) life, it could be a useful epidemiological tool for studying the long-term health effects of transport-related emissions and for reconstructing individual exposure to such pollution in order to avoid misclassification

  14. Reasons for not using ecstasy: a qualitative study of non-users, ex-light users and ex-moderate users

    Science.gov (United States)

    2012-01-01

    Background Although ecstasy is often consumed in the electronic music scene, not everyone with the opportunity to use it chooses to do so. The objective of this study was to understand the reasons for non-use or the cessation of use, which could provide information for public health interventions. Methods A qualitative reference method was used. Our “snowball” sample group consisted of 53 people who were split into three subgroups: non-users (NU, n = 23), ex-light users (EX-L, n = 12) and ex-moderate users (EX-M, n = 18). Individual, semi-structured interviews were conducted, transcribed and subjected to content analysis with the aid of NVivo8. Results Adverse health effects and personal values were given as reasons for non-use in the three groups. Non-users (NU) and ex-light users (EX-L) provided reasons that included fear of possible effects as well as moral, family and religious objections. Ex-moderate users (EX-M) cited reasons related to health complications and concomitant withdrawal from the electronic music scene. However, most of the ex-moderate users did not rule out the possibility of future use. Conclusions Potential effects and undesirable consequences appear to guide the decisions within the different groups. Prevention might target these motivations. Individuals who have used ecstasy indicate that social and environmental factors are the most important factors. PMID:22583984

  15. The mental health sequelae of traumatic head injury in South Vietnamese ex-political detainees who survived torture.

    Science.gov (United States)

    Mollica, Richard F; Chernoff, Miriam C; Megan Berthold, S; Lavelle, James; Lyoo, In Kyoon; Renshaw, Perry

    2014-10-01

    Little is known about the relationship between traumatic head injury (THI) and psychiatric morbidity in torture survivors. We examine the relationship between THI and depression, PTSD, post-concussive syndrome (PCS), disability and poor health status in Vietnamese ex-political detainees who survived incarceration in Vietnamese re-education camps. A community sample of ex-political detainees (n=337) and a non-THI, non-ex-detainee comparison group (n=82) were surveyed. Seventy-eight percent of the ex-political detainees had experienced THI; 90.6% of the ex-political detainees and 3.6% of the comparison group had experienced 7 or more trauma events. Depression and PTSD were greater in ex-detainees than in the comparison group (40.9% vs 23.2% and 13.4% vs 0%). Dose-effect relationships for THI and trauma/torture in the ex-political detainee group were significant. Logistic regression in the pooled sample of ex-detainees and the comparison group confirmed the independent impact of THI from trauma/torture on psychiatric morbidity (OR for PTSD=22.4; 95% CI: 3.0-165.8). These results demonstrate important effects of THI on depression and PTSD in Vietnamese ex-detainees who have survived torture. Copyright © 2014 Elsevier Inc. All rights reserved.

  16. A comparable study of clinical and optical outcomes after 1.8, 2.0 mm microcoaxial and 3.0 mm coaxial cataract surgery.

    Science.gov (United States)

    Yu, Yi-Bo; Zhu, Ya-Nan; Wang, Wei; Zhang, Yi-Dong; Yu, Yin-Hui; Yao, Ke

    2016-01-01

    To evaluate the clinical and optical outcomes after clear corneal incision cataract surgery (CICS) with three different incision sizes (1.8, 2.0 and 3.0 mm). Eyes of 150 patients with age-related cataract scheduled for coaxial cataract surgery were randomized to three groups: 1.8, 2.0, or 3.0 mm CICS. Intraoperative data and postoperative outcomes including surgically induced astigmatism (SIA), the corneal incision thickness, wavefront aberrations and modulation transfer function (MTF) of cornea were obtained. There were no significant differences among the three groups in demographic characteristics and intraoperative outcome. The 1.8 and 2.0 mm microincisions showed more satisfactory clinical outcomes than the 3.0 mm incision. The 1.8 mm incision showed significantly less SIA than the 2.0 mm incision until postoperative 1mo (P0.05). Converting from 3.0 mm CICS to 1.8 or 2.0 mm CICS result in better clinical and optical outcomes. However, when incision is 1.8 mm, the benefits from further reduction in size compared with 2.0 mm are limited. The necessity to reduce the incision size is to be deliberated.

  17. Genetic approaches refine ex situ lowland tapir (Tapirus terrestris) conservation.

    Science.gov (United States)

    Gonçalves da Silva, Anders; Lalonde, Danielle R; Quse, Viviana; Shoemaker, Alan; Russello, Michael A

    2010-01-01

    Ex situ conservation management remains an important tool in the face of continued habitat loss and global environmental change. Here, we use microsatellite marker variation to evaluate conventional assumptions of pedigree-based ex situ population management and directly inform a captive lowland tapir breeding program within a range country. We found relatively high levels of genetic variation (N(total) = 41; mean H(E) = 0.67 across 10 variable loci) and little evidence for relatedness among founder individuals (N(founders) = 10; mean relatedness = -0.05). Seven of 29 putative parent-offspring relationships were excluded by parentage analysis based on allele sharing, and we identified 2 individuals of high genetic value to the population (mk 0.007) that would otherwise have been excluded from the breeding program. Traditional assumptions of founders being unrelated and individuals of unknown origin being highly related led to overestimates of mean kinship and inbreeding, and underestimates of gene diversity, when compared with values found when genetic markers were used to inform kinship. We discuss our results within the context of recent studies that have assessed the utility of neutral molecular markers for ex situ conservation.

  18. Effect of anticonvulsant drugs on (/sup 35/S)t-butylbicyclophosphorothionate binding in vitro and ex vivo

    Energy Technology Data Exchange (ETDEWEB)

    Pitkaenen, A.; Riekkinen, P.J.; Saano, V.; Tuomisto, L.

    1987-01-01

    Using several concentrations of eight anticonvulsant drugs in clinical use (carbamazepine, clonazepam, phenytoin, phenobarbital, ethosuximide, primidone, sodium valproate, and D,L-..gamma..-vinyl GABA), we studied their abilities in vitro to displace (/sup 35/S)t-butylbicyclophosphorothionate (/sup 35/S-TBPS) from its binding site in a homogenate of rat brain. Thereafter ethosuximide (150 mg/kg), phenobarbital (30 mg/kg), clonazepam (0.3 mg/kg), or phenytoin (100 mg/kg) was injected intraperitoneally into rats for 16-20 days; and the effect of drug administration on /sup 35/S-TBPS binding was studied in the cortex and hippocampus ex vivo. Phenobarbital (100 ..mu..M, P<0.001), ethosuximide (500 ..mu..M, P<0.001), and phenytoin (40 ..mu..M, P<0.001) decreased the specific /sup 35/S-TBPS binding in vitro by 10-16%. After drug administration of phenobarbital (concentration in plasma 168 ..mu..M), the number of binding sites decreased and the binding affinity (p<0.05) in the cortex increased. Other anticonvulsants did not modulate /sup 35/S-TBPS binding in vitro at the concentration analogous to therapeutic plasma levels or ex vivo at the dose used. These results suggest that the use of phenobarbital may modulate the TBPS binding site, but the role of the present findings in the anticonvulsant action of phenobarbital needs to be further studied.

  19. Social Media Marketing: Challenges and Opportunities in the Web 2.0 Marketplace

    NARCIS (Netherlands)

    Constantinides, Efthymios; Lin, A.; Foster, J.; Scifleet, P.

    2013-01-01

    The present stage in the evolution of the Internet, commonly called Web 2.0, has revolutionized the way people communicate, interact, and share information and has radically changed the way customers search for and buy products. The increasing adoption of Web 2.0 applications and technologies has

  20. A comparison of BPMN 2.0 with other notations for manufacturing processes

    Science.gov (United States)

    García-Domínguez, A.; Marcos, Mariano; Medina, I.

    2012-04-01

    In order to study their current practices and improve on them, manufacturing firms need to view their processes from several viewpoints at various abstraction levels. Several notations have been developed for this purpose, such as Value Stream Mappings or IDEF models. More recently, the BPMN 2.0 standard from the Object Management Group has been proposed for modeling business processes. A process organizes several activities (manual or automatic) into a single higher-level entity, which can be reused elsewhere in the organization. Its potential for standardizing business interactions is well-known, but there is little work on using BPMN 2.0 to model manufacturing processes. In this work some of the previous notations are outlined and BPMN 2.0 is positioned among them after discussing it in more depth. Some guidelines on using BPMN 2.0 for manufacturing are offered, and its advantages and disadvantages in comparison with the other notations are presented.

  1. Alignment of ICNP® 2.0 ontology and a proposed INCP® Brazilian ontology.

    Science.gov (United States)

    Carvalho, Carina Maris Gaspar; Cubas, Marcia Regina; Malucelli, Andreia; Nóbrega, Maria Miriam Lima da

    2014-01-01

    to align the International Classification for Nursing Practice (ICNP®) Version 2.0 ontology and a proposed INCP® Brazilian Ontology. document-based, exploratory and descriptive study, the empirical basis of which was provided by the ICNP® 2.0 Ontology and the INCP® Brazilian Ontology. The ontology alignment was performed using a computer tool with algorithms to identify correspondences between concepts, which were organized and analyzed according to their presence or absence, their names, and their sibling, parent, and child classes. there were 2,682 concepts present in the ICNP® 2.0 Ontology that were missing in the Brazilian Ontology; 717 concepts present in the Brazilian Ontology were missing in the ICNP® 2.0 Ontology; and there were 215 pairs of matching concepts. it is believed that the correspondences identified in this study might contribute to the interoperability between the representations of nursing practice elements in ICNP®, thus allowing the standardization of nursing records based on this classification system.

  2. Space Suit Portable Life Support System (PLSS) 2.0 Unmanned Vacuum Environment Testing

    Science.gov (United States)

    Watts, Carly; Vogel, Matthew

    2016-01-01

    For the first time in more than 30 years, an advanced space suit Portable Life Support System (PLSS) design was operated inside a vacuum chamber representative of the flight operating environment. The test article, PLSS 2.0, was the second system-level integrated prototype of the advanced PLSS design, following the PLSS 1.0 Breadboard that was developed and tested throughout 2011. Whereas PLSS 1.0 included five technology development components with the balance the system simulated using commercial-off-the-shelf items, PLSS 2.0 featured first generation or later prototypes for all components less instrumentation, tubing and fittings. Developed throughout 2012, PLSS 2.0 was the first attempt to package the system into a flight-like representative volume. PLSS 2.0 testing included an extensive functional evaluation known as Pre-Installation Acceptance (PIA) testing, Human-in-the-Loop testing in which the PLSS 2.0 prototype was integrated via umbilicals to a manned prototype space suit for 19 two-hour simulated EVAs, and unmanned vacuum environment testing. Unmanned vacuum environment testing took place from 1/9/15-7/9/15 with PLSS 2.0 located inside a vacuum chamber. Test sequences included performance mapping of several components, carbon dioxide removal evaluations at simulated intravehicular activity (IVA) conditions, a regulator pressure schedule assessment, and culminated with 25 simulated extravehicular activities (EVAs). During the unmanned vacuum environment test series, PLSS 2.0 accumulated 378 hours of integrated testing including 291 hours of operation in a vacuum environment and 199 hours of simulated EVA time. The PLSS prototype performed nominally throughout the test series, with two notable exceptions including a pump failure and a Spacesuit Water Membrane Evaporator (SWME) leak, for which post-test failure investigations were performed. In addition to generating an extensive database of PLSS 2.0 performance data, achievements included requirements and

  3. UNION-K 2.0 User's Manual

    International Nuclear Information System (INIS)

    Yoo, Jae Woon; Jang, Jin Wook; Kim, Yeong Il

    2008-12-01

    The unified Input/Output processor UNION-K(UNified Input/Output Processor for Neutronics Analysis by K-CORE) has been developed to provide the automatic input file generation and output processing for the fast reactor core analysis. UNION-K includes the material database for reactor analysis and produces the input files for effective cross section generation, core analysis, and reactivity coefficient calculations. UNION-K can execute corresponding core analysis module and edit core performance parameters from the outputs. UNION-K also provides the graphical interface to check the geometrical arrangement of core and fuel sub-assembly and produces the picture files that can be used for reporting. This report has been prepared for instruction of using UNION-K Ver. 2.0 with examples

  4. 2016-2017 Travel Expense Reports for Gordon Houlden, Ex-Governor

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

    Beata Bialic

    Page 1. Purpose: Board meetings. Date(s):. 2016-05-15 to 2016-05-16. Destination(s):. Ottawa. Airfare: $979.19. Other. Transportation: $0.00. Accommodation: $0.00. Meals and. Incidentals: $0.00. Other: $0.00. Total: $979.19. Comments: 2016-2017 Travel Expense Reports for Gordon. Houlden, Ex-Governor.

  5. Web 2.0 Sites for Collaborative Self-Access: The Learning Advisor vs. Google®

    Directory of Open Access Journals (Sweden)

    Craig D. Howard

    2011-09-01

    Full Text Available While Web 2.0 technologies provide motivated, self-access learners with unprecedented opportunities for language learning, Web 2.0 designs are not of universally equal value for learning. This article reports on research carried out at Indiana University Bloomington using an empirical method to select websites for self-access language learning. Two questions related to Web 2.0 recommendations were asked: (1 How do recommended Web 2.0 sites rank in terms of interactivity features? (2 How likely is a learner to find highly interactive sites on their own? A list of 20 sites used for supplemental and self-access activities in language programs at five universities was compiled and provided the initial data set. Purposive sampling criteria revealed 10 sites truly represented Web 2.0 design. To address the first question, a feature analysis was applied (Herring, The international handbook of internet research. Berlin: Springer, 2008. An interactivity framework was developed from previous research to identify Web 2.0 design features, and sites were ranked according to feature quantity. The method used to address the second question was an interconnectivity analysis that measured direct and indirect interconnectivity within Google results. Highly interactive Web 2.0 sites were not prominent in Google search results, nor were they often linked via third party sites. It was determined that, using typical keywords or searching via blogs and recommendation sites, self-access learners were highly unlikely to find the most promising Web 2.0 sites for language learning. A discussion of the role of the learning advisor in guiding Web 2.0 collaborative self-access, as well as some strategic short cuts to quick analysis, conclude the article.

  6. Mobility2.0: co-operative ITS systems for enhanced electric vehicle mobility

    NARCIS (Netherlands)

    Unknown, [Unknown; Dimitrova, D.C.; Brogle, M.; Braun, T.; Heijenk, Gerhard J.

    Mobility2.0 will develop and test an in-vehicle commuting assistant for FEV mobility, resulting in more reliable and energy-efficient electro-mobility. In order to achieve a maximum impact, Mobility2.0 takes an integrated approach of ad- dressing the main bottlenecks of urban FEV mobility: range

  7. ChemProt-2.0: visual navigation in a disease chemical biology database

    DEFF Research Database (Denmark)

    Kjærulff, Sonny Kim; Wich, Louis; Kringelum, Jens Vindahl

    2013-01-01

    ChemProt-2.0 (http://www.cbs.dtu.dk/services/ChemProt-2.0) is a public available compilation of multiple chemical-protein annotation resources integrated with diseases and clinical outcomes information. The database has been updated to > 1.15 million compounds with 5.32 millions bioactivity measu...

  8. Effect of anode firing on the performance of lanthanum and nickel co-doped SrTiO3 (La0.2Sr0.8Ti0.9Ni0.1O3-δ) anode of solid oxide fuel cell

    Science.gov (United States)

    Park, Byung Hyun; Choi, Gyeong Man

    2015-10-01

    Perovskite oxides have potential for use as alternative anode materials in solid oxide fuel cells (SOFCs) due to stability in anode atmosphere; donor-doped SrTiO3 (e.g., La0.2Sr0.8TiO3-δ) is a good candidate for this purpose. Electro-catalytic nanoparticles can be produced in oxide anodes by the ex-solution method, e.g., by incorporating Ni into a perovskite oxide in air, then reducing the oxide in H2 atmosphere. In this study, we varied the temperature (1100, 1250 °C) and atmosphere (air, H2) of La0.2Sr0.8Ti0.9Ni0.1O3-δ (LSTN) anode firing to control the degree of Ni ex-solution and microstructure. LSTN fired at 1250 °C in H2 showed the best anodic performance for scandia-stabilized zirconia (ScSZ) electrolyte-supported cells in H2 and CH4 fuels due to the favorable microstructure and Ni ex-solution.

  9. Preliminary Results from the PrimEx-II experiment at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Gasparian, Ashot [NCA& T, Greensboro, NC; Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

    2016-06-01

    Properties of the neutral pion, as the lightest hadron in Nature, are most sensitive to the basic symmetries and their partial breaking effects in the theory of the strong interaction (QCD). In particular, the po →gg decay width is primarily defined by the spontaneous chiral symmetry breaking effect (chiral anomaly) in QCD. The next order corrections to the anomaly have been shown to be small and are known to a 1% precision level. The PrimEx Collaboration at JLab has developed and performed two Primakoff type experiments to measure the po →gg decay width with a similar precision. The published result from the PrimEx-I experiment, G(p0 →gg ) = 7.82±0.14 (stat.)±0.17 (syst.) eV, was a factor of two more precise than the average value quoted in PDG-2010 [1]. The second experiment was performed in 2010 with a goal of 1.4% total uncertainty to address the next-to-leading-order theory calculations. The preliminary results from the PrimEx-II experiment are presented and discussed in this note.

  10. Transforming patient experience: health web science meets medicine 2.0.

    Science.gov (United States)

    McHattie, Lynn-Sayers; Cumming, Grant; French, Tara

    2014-01-01

    Until recently, the Western biomedical paradigm has been effective in delivering health care, however this model is not positioned to tackle complex societal challenges or solve the current problems facing health care and delivery. The future of medicine requires a shift to a patient-centric model and in so doing the Internet has a significant role to play. The disciplines of Health Web Science and Medicine 2.0 are pivotal to this approach. This viewpoint paper argues that these disciplines, together with the field of design, can tackle these challenges. Drawing together ideas from design practice and research, complexity theory, and participatory action research we depict design as an approach that is fundamentally social and linked to concepts of person-centered care. We discuss the role of design, specifically co-design, in understanding the social, psychological, and behavioral dimensions of illness and the implications for the design of future care towards transforming the patient experience. This paper builds on the presentations and subsequent interdisciplinary dialogue that developed from the panel session "Transforming Patient Experience: Health Web Science Meets Web 2.0" at the 2013 Medicine 2.0 conference in London.

  11. Transforming Patient Experience: Health Web Science Meets Medicine 2.0

    Science.gov (United States)

    2014-01-01

    Until recently, the Western biomedical paradigm has been effective in delivering health care, however this model is not positioned to tackle complex societal challenges or solve the current problems facing health care and delivery. The future of medicine requires a shift to a patient-centric model and in so doing the Internet has a significant role to play. The disciplines of Health Web Science and Medicine 2.0 are pivotal to this approach. This viewpoint paper argues that these disciplines, together with the field of design, can tackle these challenges. Drawing together ideas from design practice and research, complexity theory, and participatory action research we depict design as an approach that is fundamentally social and linked to concepts of person-centered care. We discuss the role of design, specifically co-design, in understanding the social, psychological, and behavioral dimensions of illness and the implications for the design of future care towards transforming the patient experience. This paper builds on the presentations and subsequent interdisciplinary dialogue that developed from the panel session "Transforming Patient Experience: Health Web Science Meets Web 2.0" at the 2013 Medicine 2.0 conference in London. PMID:25075246

  12. Identifying and weighting of key performance indicators of knowledge management2.0 in organizations

    Directory of Open Access Journals (Sweden)

    Saeed Khalilazar

    2016-03-01

    Full Text Available Main purpose of this research is identifying and weighting of key performance indicators of knowledge management2.0 in organizations. According to widespread permeation of technology, especially social media in different organizational dimensions and functional view to this phenomenon in knowledge management, performance measurement of this kind of media in order to meet organizational goals seems necessary. KM2.0 key performance indicators in this article has been identified and weighted through Delphi methodology, via questionnaire in three rounds. KM2.0 KPIs which are identified and weighted in this article are applicable in organizations that are eager to implement KM2.0 initiative and they can measure the performance of KM2.0 activities therefore this research is applicable in goal oriented approach. According to the results, KM2.0 participation process consists of 3 stages and 8 steps as mentioned below: First stage which is presence, consists of 3 steps which are registration, visit and download. Second stage which is feedback consists of 3 steps which are conversation, applause and amplification. Finally, third stage which is creation consists of 2 steps which are codification and personalization. Ultimate contribution of this research is identifying and weighting KPIs of KM2.0 in conceptual framework of KM2.0. Based on developing a conceptual framework and participation process in KM2.0 and listing related KPIs as an applicable solution in order to measure and improve the performance of organizational social media, this research has unique innovation among related and other articles.

  13. A Novel Ex Vivo Training Model for Acquiring Supermicrosurgical Skills Using a Chicken Leg.

    Science.gov (United States)

    Cifuentes, Ignacio J; Rodriguez, José R; Yañez, Ricardo A; Salisbury, María C; Cuadra, Álvaro J; Varas, Julian E; Dagnino, Bruno L

    2016-11-01

    Background  Supermicrosurgery is a technique used for dissection and anastomosis of submillimeter diameter vessels. This technique requires precise hand movements and superb eye-hand coordination, making continuous training necessary. Biological in vivo and ex vivo models have been described for this purpose, the latter being more accessible and cost-effective. The aim of this study is to present a new ex vivo training model using a chicken leg. Methods  In 28 chicken legs, an anatomical study was performed. An intramuscular perforator vessel was identified and dissected. Arterial diameters of 0.7, 0.5, and 0.3 mm were identified and consistency of the perforator was assessed. In additional 10 chicken legs, 25 submillimeter arteries were anastomosed using this perforator vessel. Five arteries of 0.3 and 10 of 0.5 mm were anastomosed with nylon 11-0 and 12-0 sutures. Intravascular stent (IVaS) technique and open guide (OG) technique were used in 0.5-mm arteries. A total of 10 arteries of 0.7 mm were anastomosed using 10-0 sutures in a conventional fashion. Dissection and anastomosis time were recorded and patency was tested. Results  We were able to identify 0.7 to 0.3 mm diameter arteries in all the specimens and confirm the consistency of the perforator. The median time for dissection was 13.4 minutes. The median time for anastomosis was 32.3 minutes for 0.3-mm arteries, 24.3 minutes for 0.5-mm arteries using IVaS, 29.5 minutes for the OG technique, and 20.9 minutes for the 0.7 mm diameter arteries. All the anastomoses were permeable. Conclusion  Due to its consistent and adequate diameter vessels, this model is adequate for training supermicrosurgical skills. Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

  14. WISEA J114724.10-204021.3: A FREE-FLOATING PLANETARY MASS MEMBER OF THE TW HYA ASSOCIATION

    Energy Technology Data Exchange (ETDEWEB)

    Schneider, Adam C.; Windsor, James; Cushing, Michael C. [Department of Physics and Astronomy, University of Toledo, 2801 W. Bancroft Street, Toledo, OH 43606 (United States); Kirkpatrick, J. Davy [Infrared Processing and Analysis Center, California Institute of Technology, MS 100-22, Pasadena, CA 91125 (United States); Wright, Edward L., E-mail: Adam.Schneider@Utoledo.edu [Department of Physics and Astronomy, University of California, Los Angeles, 430 Portola Plaza, Box 951547, Los Angeles, CA 90095-1547 (United States)

    2016-05-01

    We present WISEA J114724.10-204021.3, a young, low-mass, high-probability member of the TW Hya association (TWA). WISEA J114724.10-204021.3 was discovered based on its red AllWISE color ( W 1 − W 2 = 0.63 mag) and extremely red 2MASS J − K {sub S} color (>2.64 mag), the latter of which is confirmed with near-infrared photometry from the Visible and Infrared Survey Telescope for Astronomy Hemisphere Survey ( J − K {sub S} = 2.57 ± 0.03). Follow-up near-infrared spectroscopy shows a spectral type of L7 ± 1 as well as several spectroscopic indicators of youth. These include a peaked H -band shape and a steeper K -band slope, traits typically attributed to low surface gravity. The sky position, proper motion, and distance estimates of WISEA J114724.10-204021.3 are all consistent with membership in the ∼10 Myr old TWA. Using the age of the TWA and evolutionary models, we estimate the mass of WISEA J114724.10-204021.3 to be 5–13 M {sub Jup}, making it one of the youngest and lowest-mass free-floating objects yet discovered in the Solar neighborhood.

  15. The relationship between the Nasality Severity Index 2.0 and perceptual judgments of hypernasality.

    NARCIS (Netherlands)

    K. Bettens; Anke Luyten; F. Wuyts; M. de Bodt; K. van Lierde; Y. Maryn

    2016-01-01

    PURPOSE: The Nasality Severity Index 2.0 (NSI 2.0) forms a new, multiparametric approach in the identification of hypernasality. The present study aimed to investigate the correlation between the NSI 2.0 scores and the perceptual assessment of hypernasality. METHOD: Speech samples of 35 patients,

  16. Intra-individual response variability assessed by ex-gaussian analysis may be a new endophenotype for Attention Deficit / Hyperactivity Disorder

    Directory of Open Access Journals (Sweden)

    Marcela Patricia Henríquez-Henríquez

    2015-01-01

    Full Text Available Intra-individual variability of Response Times (RTisv is considered as potential endophenotype for Attentional Deficit/Hyperactivity Disorder (ADHD. Traditional methods for estimating RTisv lose information regarding Response Times (RTs distribution along the task, with eventual effects on statistical power. Ex-Gaussian analysis captures the dynamic nature of RTisv, estimating normal and exponential components for RT distribution, with specific phenomenological correlates. Here, we applied ex-Gaussian analysis to explore whether intra-individual variability of RTs agrees with criteria proposed by Gottesman and Gould for endophenotypes. Specifically, we evaluated if Normal and/or exponential components of RTs may a Present the stair-like distribution expected for endophenotypes (ADHD>Siblings>Typically Developing children (TD without familiar history of ADHD and b Represent a phenotypic correlate for previously described genetic risk variants. This is a pilot study including 55 subjects (20 ADHD-discordant sibling-pairs and 15 TD children, all aged between 8 and 13 years. Participants resolved a visual Go/Nogo with 10% Nogo probability. Ex-Gaussian distributions were fitted to individual RT data and compared among the three samples. In order to test whether intra-individual variability may represent a correlate for previously described genetic risk variants, VNTRs at DRD4 and SLC6A3 were identified in all sibling pairs following standard protocols. Groups were compared adjusting independent general linear models for the exponential and normal components from the ex-gaussian analysis. Identified trends were confirmed by the non-parametric Jonckheere-Terpstra test. Stair-like distributions were observed for μ (p=0.036 and σ (p=0.009. An additional DRD4-genotype X clinical status interaction was present for τ (p=0,014 reflecting a possible severity factor. Thus, Normal and exponential RTisv components are suitable as ADHD endophenotypes.

  17. The relationship between the Nasality Severity Index 2.0 and perceptual judgments of hypernasality.

    Science.gov (United States)

    Bettens, Kim; De Bodt, Marc; Maryn, Youri; Luyten, Anke; Wuyts, Floris L; Van Lierde, Kristiane M

    2016-01-01

    The Nasality Severity Index 2.0 (NSI 2.0) forms a new, multiparametric approach in the identification of hypernasality. The present study aimed to investigate the correlation between the NSI 2.0 scores and the perceptual assessment of hypernasality. Speech samples of 35 patients, representing a range of nasality from normal to severely hypernasal, were rated by four expert speech-language pathologists using visual analogue scaling (VAS) judging the degree of hypernasality, audible nasal airflow (ANA) and speech intelligibility. Inter- and intra-listener reliability was verified using intraclass correlation coefficients. Correlations between NSI 2.0 scores and its parameters (i.e. nasalance score of an oral text and vowel /u/, voice low tone to high tone ratio of the vowel /i/) and the degree of hypernasality were determined using Pearson correlation coefficients. Multiple linear regression analysis was used to investigate the possible influence of ANA and speech intelligibility on the NSI 2.0 scores. Overall good to excellent inter- and intra-listener reliability was found for the perceptual ratings. A moderate, but significant negative correlation between NSI 2.0 scores and perceived hypernasality (r=-0.64) was found, in which a more negative NSI 2.0 score indicates the presence of more severe hypernasality. No significant influence of ANA or intelligibility on the NSI 2.0 was observed based on the regression analysis. Because the NSI 2.0 correlates significantly with perceived hypernasality, it provides an easy-to-interpret severity score of hypernasality which will facilitate the evaluation of therapy outcomes, communication to the patient and other clinicians, and decisions for treatment planning, based on a multiparametric approach. However, research is still necessary to further explore the instrumental correlates of perceived hypernasality. The reader will be able to (1) describe and discuss current issues and influencing variables regarding perceptual

  18. Tests of ex ante ex post theories of collateral using private and public information

    NARCIS (Netherlands)

    Berger, A.N.; Frame, W.S.; Ioannidou, V.

    2011-01-01

    Collateral is a widely used, but not well understood, debt contracting feature. Two broad strands of theoretical literature explain collateral as arising from the existence of either ex ante private information or ex post incentive problems between borrowers and lenders. However, the extant

  19. Fostering Collaborative Learning with Mobile Web 2.0 in Semi-Formal Settings

    Science.gov (United States)

    Mwanza-Simwami, Daisy

    2016-01-01

    Mobile Web 2.0 technologies such as: mobile apps, social networking sites and video sharing sites have become essential drivers for shaping daily activities and meeting learning needs in various settings. However, very few studies link mobile Web 2.0 to supporting collaborative learning in real-life problem solving activities in semi-formal…

  20. Challenges of using web 2.0 tools among university librarians in the ...

    African Journals Online (AJOL)

    Others are lack of computer literacy, unavailability of computer and internet facilities lack of technical knowledge on the use of web 2.0. it also reveal that facebook, youtube, twitter, instant messaging were the frequently use web 2.0 tools. Based on the findings, it was recommended that university management should make ...

  1. Journal Writing with Web 2.0 Tools: A Vision for Older Adults

    Science.gov (United States)

    Shepherd, Craig E.; Aagard, Steven

    2011-01-01

    This article describes how Web 2.0 technologies may facilitate journaling and related inquiry methods among older adults. Benefits and limitations of journaling are summarized as well as computer skills of older adults. We then describe how Web 2.0 technologies can enhance journaling among older adults by diminishing feelings of isolation,…

  2. GOW2.0: A global wave hindcast of high resolution

    Science.gov (United States)

    Menendez, Melisa; Perez, Jorge; Losada, Inigo

    2016-04-01

    The information provided by reconstructions of historical wind generated waves is of paramount importance for a variety of coastal and offshore purposes (e.g. risk assessment, design of costal structures and coastal management). Here, a new global wave hindcast (GOW2.0) is presented. This hindcast is an update of GOW1.0 (Reguero et al. 2012) motivated by the emergence of new settings and atmospheric information from reanalysis during recent years. GOW2.0 is based on version 4.18 of WaveWatch III numerical model (Tolman, 2014). Main features of the model set-up are the analysis and selection of recent source terms concerning wave generation and dissipation (Ardhuin et al. 2010, Zieger et al., 2015) and the implementation of obstruction grids to improve the modeling of wave shadowing effects in line with the approach described in Chawla and Tolman (2007). This has been complemented by a multigrid system and the use of the hourly wind and ice coverage from the Climate Forecast System Reanalysis, CFSR (30km spatial resolution approximately). The multigrid scheme consists of a series of "two-way" nested domains covering the whole ocean basins at a 0.5° spatial resolution and continental shelfs worldwide at a 0.25° spatial resolution. In addition, a technique to reconstruct wave 3D spectra for any grid-point is implemented from spectral partitioning information. A validation analysis of GOW2.0 outcomes has been undertaken considering wave spectral information from surface buoy stations and multi-mission satellite data for a spatial validation. GOW2.0 shows a substantial improvement over its predecessor for all the analyzed variables. In summary, GOW2.0 reconstructs historical wave spectral data and climate information from 1979 to present at hourly resolution providing higher spatial resolution over regions where local generated wind seas, bimodal-spectral behaviour and relevant swell transformations across the continental shelf are important. Ardhuin F, Rogers E

  3. Ex vivo MRI evaluation of prostate cancer: Localization and margin status prediction of prostate cancer in fresh radical prostatectomy specimens.

    Science.gov (United States)

    Heidkamp, Jan; Hoogenboom, Martijn; Kovacs, Iringo E; Veltien, Andor; Maat, Arie; Sedelaar, J P Michiel; Hulsbergen-van de Kaa, Christina A; Fütterer, Jurgen J

    2018-02-01

    To investigate the ability of high field ex vivo magnetic resonance imaging (MRI) to localize prostate cancer (PCa) and to predict the margin status in fresh radical prostatectomy (RP) specimens using histology as the reference standard. This Institutional Review Board (IRB)-approved study had written informed consent. Patients with biopsy-proved PCa and a diagnostic multiparametric 3T MRI examination of the prostate prior to undergoing RP were prospectively included. A custom-made container provided reference between the 7T ex vivo MRI obtained from fresh RP specimens and histological slicing. On ex vivo MRI, PCa was localized and the presence of positive surgical margins was determined in a double-reading session. These findings were compared with histological findings obtained from completely cut, whole-mount embedded, prostate specimens. In 12 RP specimens, histopathology revealed 36 PCa lesions, of which 17 (47%) and 20 (56%) were correlated with the ex vivo MRI in the first and second reading session, respectively. Nine of 12 (75%) index lesions were localized in the first session, in the second 10 of 12 (83%). Seven and 8 lesions of 11 lesions with Gleason score >6 and >0.5 cc were localized in the first and second session, respectively. In the first session none of the four histologically positive surgical margins (sensitivity 0%) and 9 of 13 negative margins (specificity 69%) were detected. In second session the sensitivity and specificity were 25% and 88%, respectively. Ex vivo MRI enabled accurate localization of PCa in fresh RP specimens, and the technique provided information on the margin status with high specificity. 1 Technical Efficacy: Stage 1 J. Magn. Reson. Imaging 2018;47:439-448. © 2017 International Society for Magnetic Resonance in Medicine.

  4. PROMIS®-29 v2.0 profile physical and mental health summary scores.

    Science.gov (United States)

    Hays, Ron D; Spritzer, Karen L; Schalet, Benjamin D; Cella, David

    2018-03-22

    The PROMIS-29 v2.0 profile assesses pain intensity using a single 0-10 numeric rating item and seven health domains (physical function, fatigue, pain interference, depressive symptoms, anxiety, ability to participate in social roles and activities, and sleep disturbance) using four items per domain. This paper describes the development of physical and mental health summary scores for the PROMIS-29 v2.0. We conducted factor analyses of PROMIS-29 scales on data collected from two internet panels (n = 3000 and 2000). Confirmatory factor analyses provided support for a physical health factor defined by physical function, pain (interference and intensity), and ability to participate in social roles and activities, and a mental health factor defined primarily by emotional distress (anxiety and depressive symptoms). Reliabilities for these two summary scores were 0.98 (physical health) and 0.97 (mental health). Correlations of the PROMIS-29 v2.0 physical and mental health summary scores with chronic conditions and other health-related quality of life measures were consistent with a priori hypotheses. This study develops and provides preliminary evidence supporting the reliability and validity of PROMIS-29 v2.0 physical and mental health summary scores that can be used in future studies to assess impacts of health care interventions and track changes in health over time. Further evaluation of these and alternative summary measures is recommended.

  5. The Program Management Challenges of Web 2.0

    Science.gov (United States)

    2010-06-01

    scraping Web services TBD publishing participation TBD content management systems wikis TBD directories (taxonomy) tagging (“ folksonomy ”) TBD... Folksonomies (User chosen keywords to organize and index onlive content to facilitate its use, especially helpful in searching) • Video Sharing...and folksonomies . A Web 2.0 site allows its users to interact with other users or to change Web site content, in contrast to non-interactive Web

  6. Screening for Posttraumatic Stress Disorder among Somali ex-combatants: A validation study

    Directory of Open Access Journals (Sweden)

    Rockstroh Brigitte

    2007-09-01

    Full Text Available Abstract Background In Somalia, a large number of active and former combatants are affected by psychological problems such as Posttraumatic Stress Disorder (PTSD. This disorder impairs their ability to re-integrate into civilian life. However, many screening instruments for Posttraumatic Stress Disorder used in post-conflict settings have limited validity. Here we report on development and validation of a screening tool for PTSD in Somali language with a sample of ex-combatants. Methods We adapted the Posttraumatic Diagnostic Scale (PDS to reflect linguistic and cultural differences within the Somali community so that local interviewers could be trained to administer the scale. For validation purposes, a randomly selected group of 135 Somali ex-combatants was screened by trained local interviewers; 64 of them were then re-assessed by trained clinical psychologists using the Composite International Diagnostic Interview (CIDI and the Self-Report Questionnaire (SRQ-20. Results The screening instrument showed good internal consistency (Cronbach's α = .86, convergent validity with the CIDI (sensitivity = .90; specificity = .90 as well as concurrent validity: positive cases showed higher SRQ-20 scores, higher prevalence of psychotic symptoms, and higher levels of intake of the local stimulant drug khat. Compared to a single cut-off score, the multi-criteria scoring, in keeping with the DSM-IV, produced more diagnostic specificity. Conclusion The results provide evidence that our screening instrument is a reliable and valid method to detect PTSD among Somali ex-combatants. A future Disarmament, Demobilization and Reintegration Program in Somalia is recommended to screen for PTSD in order to identify ex-combatants with special psycho-social needs.

  7. Cooperative Learning and Web 2.0: A Social Perspective on Critical Thinking

    Science.gov (United States)

    Schipke, Rae Carrington

    2018-01-01

    This article discusses how cooperative learning as a socioinstructional approach, relates to both socially-based emerging technologies (i.e. Web 2.0) and to critical thinking with respect to co-cognition. It begins with a discussion of the importance of connecting cooperative learning, Web 2.0, and critical thinking. This is followed by the need…

  8. From theory based policy evaluation to SMART Policy Design: Lessons learned from 20 ex-post evaluations of energy efficiency instruments

    International Nuclear Information System (INIS)

    Harmelink, Mirjam; Harmsen, Robert; Nilsson, Lars

    2007-01-01

    This article presents the results of an in-depth ex-post analysis of 20 energy efficiency policy instruments applied across different sectors and countries. Within the AID-EE project, we reconstructed and analysed the implementation process of energy efficiency policy instruments with the aim to identify key factors behind successes and failures. The analysis was performed using a uniform methodology called 'theory based policy evaluation'. With this method the whole implementation process is assessed with the aim to identify: (i) the main hurdles in each step of the implementation process, (ii) key success factors for different types of instruments and (iii) the key indicators that need to be monitored to enable a sound evaluation of the energy efficiency instruments. Our analysis shows that: Energy efficiency policies often lack quantitative targets and clear timeframes; Often policy instruments have multiple and/or unclear objectives; The need for monitoring information does often not have priority in the design phase; For most instruments, monitoring information is collected on a regular basis. However, this information is often insufficient to determine the impact on energy saving, cost-effectiveness and target achievement of an instrument; Monitoring and verification of actual energy savings have a relatively low priority for most of the analyzed instruments. There is no such thing as the 'best' policy instrument. However, typical circumstances in which to apply different types of instruments and generic characteristics that determine success or failure can be identified. Based on the assessments and the experience from applying theory based policy evaluation ex-post, we suggest that this should already be used in the policy formulation and design phase of instruments. We conclude that making policy theory an integral and mandated part of the policy process would facilitate more efficient and effective energy efficiency instruments

  9. In vitro and ex vivo evaluations on transdermal delivery of the HIV inhibitor IQP-0410.

    Directory of Open Access Journals (Sweden)

    Anthony S Ham

    Full Text Available The aim of this study was to investigate the physicochemical and in vitro/ex vivo characteristics of the pyrmidinedione IQP-0410 formulated into transdermal films. IQP-0410 is a potent therapeutic anti-HIV nonnucleoside reverse transcriptase inhibitor that would be subjected to extensive first pass metabolism, through conventional oral administration. Therefore, IQP-0410 was formulated into ethyl cellulose/HPMC-based transdermal films via solvent casting. In mano evaluations were performed to evaluate gross physical characteristics. In vitro release studies were performed in both Franz cells and USP-4 dissolution vessels. Ex vivo release and permeability assays were performed on human epidermal tissue models, and the permeated IQP-0410 was collected for in vitro HIV-1 efficacy assays in CEM-SS cells and PBMCs. Film formulation D3 resulted in pliable, strong transdermal films that were loaded with 2% (w/w IQP-0410. Composed of 60% (w/w ethyl cellulose and 20% (w/w HPMC, the films contained < 1.2% (w/w of water and were hygroscopic resulting in significant swelling under humid conditions. The water permeable nature of the film resulted in complete in vitro dissolution and drug release in 26 hours. When applied to ex vivo epidermal tissues, the films were non-toxic to the tissue and also were non-toxic to HIV target cells used in the in vitro efficacy assays. Over a 3 day application, the films delivered IQP-0410 through the skin tissue at a zero-order rate of 0.94 ± 0.06 µg/cm(2/hr with 134 ± 14.7 µM collected in the basal media. The delivered IQP-0410 resulted in in vitro EC50 values against HIV-1 of 2.56 ± 0.40 nM (CEM-SS and 0.58 ± 0.03 nM (PBMC. The film formulation demonstrated no significant deviation from target values when packaged in foil pouches under standard and accelerated environmental conditions. It was concluded that the transdermal film formulation was a potentially viable method of administering IQP-0410 that warrants

  10. [Effects of electroacupuncture at "Yishu" (EX-B 3) on the relative hormones of HPA axis in rats with type-2 diabetes mellitus].

    Science.gov (United States)

    Gao, Shana; Li, Rui; Tian, Huan-huan; Pei, En-shi; Cao, Bing-yan; Wu, Yan

    2014-11-01

    To observe the intervention effects of electroacupuncture at "Yishu" (EX-B 3) on rats with type-2 diabetes mellitus (T2DM), so as to provide experiment references for acupuncture to treat T2DM. Among seventy male Wistar clean-grade rats, 8 rats were randomly selected into a control group; the rest rats were made T2DM model. Fifty-two rats which were successfully made T2DM model, according to randomized block method, were divided into a model group (10 rats), a medication group (10 rats), an electroacupuncture at "Shenshu" (BL 23) group (11 rats), an electroacupuncture at "Pishu" (BL 20) group (10 rats) and an electroacupuncture at "Yishu" (EX-B 3) group (11 rats). Seven days after successful establishment of model, the rats in the model group were fixed in the self-made rat bag without receiving any treatment; the rats in the medication group, according to body mass (10 mL/kg), were treated with intragastric administration of glimepiride; the rats in all the electroacupuncture groups were treated with electroacupuncture at "Shenshu" (BL 23), "Pishu" (BL 20) and "Yishu" (EX-B 3), respectively. The continuous wave was selected with a frequency of 15 Hz and a current intensity of 4 to 6 mA. The treatment was given 20 min per treatment, once a day, 5 treatments per week for continuous 4 weeks. Before the establishment of model and continuous 4 weeks after the intervention, blood samples were collected from rats' caudal vein, and fasting blood glucose (FBG) was measured with FBG device each week. After the last intervention, the rats were killed and hypothalamus, pituitary and adrenal gland were collected. The colorimetric method was applied to measure the contents of triglyceride (TG), cholesterol (TC), high-density lipoprotein (HDL-C) and low-density lipoprotein (LDL-C); radioimmunoassay was used to test the contents of glycated serum protein (GSP), fasting insulin (FINS), corticotropin-releasing hormone (CRH), adrenocorticotropic hormone (ACTH) and cortin (CORT

  11. HbA1c, fasting and 2 h plasma glucose in current, ex- and never-smokers

    DEFF Research Database (Denmark)

    Soulimane, Soraya; Simon, Dominique; Herman, William H

    2014-01-01

    AIMS/HYPOTHESIS: The relationships between smoking and glycaemic variables have not been well explored. We compared HbA1c, fasting plasma glucose (FPG) and 2 h plasma glucose (2H-PG) in current, ex- and never-smokers. METHODS: This meta-analysis used individual data from 16,886 men and 18,539 women......, there was no significant difference between current and never-smokers (-0.004 mmol/l [-0.03, 0.02]) but FPG was higher in ex-smokers (0.12 mmol/l [0.09, 0.14]). In comparison with never-smokers, 2H-PG was lower (-0.44 mmol/l [-0.52, -0.37]) in current smokers, with no difference for ex-smokers (0.02 mmol/l [-0.06, 0...... as screened by 2H-PG, in comparison with never-smokers. CONCLUSION/INTERPRETATION: Across this heterogeneous group of studies, current smokers had a higher HbA1c and lower 2H-PG than never-smokers. This will affect the chances of smokers being diagnosed with diabetes....

  12. Studying Behaviors Among Neurosurgery Residents Using Web 2.0 Analytic Tools.

    Science.gov (United States)

    Davidson, Benjamin; Alotaibi, Naif M; Guha, Daipayan; Amaral, Sandi; Kulkarni, Abhaya V; Lozano, Andres M

    Web 2.0 technologies (e.g., blogs, social networks, and wikis) are increasingly being used by medical schools and postgraduate training programs as tools for information dissemination. These technologies offer the unique opportunity to track metrics of user engagement and interaction. Here, we employ Web 2.0 tools to assess academic behaviors among neurosurgery residents. We performed a retrospective review of all educational lectures, part of the core Neurosurgery Residency curriculum at the University of Toronto, posted on our teaching website (www.TheBrainSchool.net). Our website was developed using publicly available Web 2.0 platforms. Lecture usage was assessed by the number of clicks, and associations were explored with lecturer academic position, timing of examinations, and lecture/subspecialty topic. The overall number of clicks on 77 lectures was 1079. Most of these clicks were occurring during the in-training examination month (43%). Click numbers were significantly higher on lectures presented by faculty (mean = 18.6, standard deviation ± 4.1) compared to those delivered by residents (mean = 8.4, standard deviation ± 2.1) (p = 0.031). Lectures covering topics in functional neurosurgery received the most clicks (47%), followed by pediatric neurosurgery (22%). This study demonstrates the value of Web 2.0 analytic tools in examining resident study behavior. Residents tend to "cram" by downloading lectures in the same month of training examinations and display a preference for faculty-delivered lectures. Copyright © 2017 Association of Program Directors in Surgery. Published by Elsevier Inc. All rights reserved.

  13. Social networks, politics and Commitment 2.0: Spanish MPs on Facebook

    Directory of Open Access Journals (Sweden)

    José Sixto, B.A.

    2011-01-01

    Full Text Available In a technologically and sociologically advanced society, the organizations that do not use the new media and the cyber communication techniques are probably doomed to failure. In this virtual sphere the social networks constitute a suitable resource and channel for the implementation of political marketing 2.0, as it provides a scenario where the interaction with users is possible. From this perspective, we verified their presence of the 350 members of the Spanish Congress on Facebook, the country’s most popular social network, in order to establish the predominant typologies, updating frequency, contents, resources, and the types of information posted in this spaces.This article also examines the interactivity of MPs in what we have termed Commitment 2.0: political communication in personal contexts such as social networks requires going from the participatory attitude to the participatory action; that is, to accept the interaction 2.0 as the correct behaviour on the network.

  14. Designing Geometry 2.0 learning environments: a preliminary study with primary school students

    Science.gov (United States)

    Joglar Prieto, Nuria; María Sordo Juanena, José; Star, Jon R.

    2014-04-01

    The information and communication technologies of Web 2.0 are arriving in our schools, allowing the design and implementation of new learning environments with great educational potential. This article proposes a pedagogical model based on a new geometry technology-integrated learning environment, called Geometry 2.0, which was tested with 39 sixth grade students from a public school in Madrid (Spain). The main goals of the study presented here were to describe an optimal role for the mathematics teacher within Geometry 2.0, and to analyse how dynamic mathematics and communication might affect young students' learning of basic figural concepts in a real setting. The analyses offered in this article illustrate how our Geometry 2.0 model facilitates deeply mathematical tasks which encourage students' exploration, cooperation and communication, improving their learning while fostering geometrical meanings.

  15. New sacrificial material for ex-vessel core catcher

    Energy Technology Data Exchange (ETDEWEB)

    Komlev, Andrei A., E-mail: komlev@kth.se [Kungliga Tekniska Högskolan (KTH), AlbaNova University Centre, Nuclear Power Safety Division, Roslagstullsbacken 21, SE-106 91, Stockholm (Sweden); Almjashev, Vyacheslav I., E-mail: vac@mail.ru [A.P. Aleksandrov Research Institute of Technology, NITI, DSAR, Sosnovy Bor, 188540 (Russian Federation); Bechta, Sevostian V., E-mail: bechta@safety.sci.kth.se [Kungliga Tekniska Högskolan (KTH), AlbaNova University Centre, Roslagstullsbacken 21, SE-106 91, Stockholm (Sweden); Khabensky, Vladimir B., E-mail: vladimirkhabensky@gmail.com [A.P. Aleksandrov Research Institute of Technology, NITI, DSAR, Sosnovy Bor, 188540 (Russian Federation); Granovsky, Vladimir S., E-mail: gran@niti.ru [A.P. Aleksandrov Research Institute of Technology, NITI, DSAR, Sosnovy Bor, 188540 (Russian Federation); Gusarov, Victor V., E-mail: victor.v.gusarov@gmail.com [Ioffe Institute, 26 Polytekhnicheskaya Str., St. Petersburg, 194021 (Russian Federation)

    2015-12-15

    A new functional (sacrificial) material has been developed in the Fe{sub 2}O{sub 3}–SrO–Al{sub 2}O{sub 3}–CaO system based on strontium hexaferrite ceramic in concrete matrix. The method of producing SM has been advanced technologically; this technological effectiveness allows the SM to be used in ex-vessel core catchers with corium spreading as well as in crucible-type core catchers. Critical properties regarding the efficiency of SM in ex-vessel core catchers, such as porosity, pycnometric density, apparent density, solidus and liquidus temperatures, and water content have been measured. Suitable fractions of SrFe{sub 12}O{sub 19} and high alumina cement (HAC) were found in the SM based on thermodynamic analysis of the SM/corium interaction. The use of sacrificial steel as an additional heat adsorption component in the core catcher allowed us to increase the mass fraction range of SrFe{sub 12}O{sub 19} in the SM from 0.3−0.5 to 0.3–0.85. The activation temperature of the SM/corium interaction has been shown to correspond to the liquidus temperature of the local composition at the SM/corium interface. The calculated value of this temperature was 1716 °C. Analysis of phase transformations in the SrO–Fe{sub 2}O{sub 3} system revealed advantages of the SrFe{sub 12}O{sub 19}–based sacrificial material compared with the Fe{sub 2}O{sub 3}-contained material owing to the time proximity of SrFe{sub 12}O{sub 19} decomposition and corium interaction activation. - Highlights: • A sacrificial material (SM) was developed for ex-vessel core catcher. • Suitable proportions in the SrFe{sub 12}O{sub 19}–Al{sub 2}O{sub 3}·CaO–Fe system were determined. • Hydrogen release limitation was shown for ex-vessel corium retention with the SM. • Calculated temperature of the active initiation of corium/SM interaction is 1716 °C. • Functional properties of the SM were measured.

  16. The effect of radiofrequency ablation on different organs: Ex vivo and in vivo comparative studies

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Yoo Na [Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Ilwon-dong, Kangnam-Ku, Seoul 135-710 (Korea, Republic of); Rhim, Hyunchul, E-mail: rhimhc@skku.edu [Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Ilwon-dong, Kangnam-Ku, Seoul 135-710 (Korea, Republic of); Choi, Dongil; Kim, Young-sun; Lee, Min Woo; Chang, Ilsoo; Lee, Won Jae; Lim, Hyo K. [Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Ilwon-dong, Kangnam-Ku, Seoul 135-710 (Korea, Republic of)

    2011-11-15

    Objective: The purposes of this study are to evaluate the ex vivo and in vivo efficacy of radiofrequency ablation (RFA) on different porcine tissues by the ablation of three different sites simultaneously. Materials and methods: A multichannel RFA system, enables three separate tumors to be ablated simultaneously, was used. RFA procedures were applied to normal porcine liver, kidney, and muscle together ex vivo (n = 12) and in vivo (n = 17). Pre-impedances, defined as baseline systemic impedances of tissues before beginning RFA, and the areas of ablation zones were measured and compared. Results: The areas of ablation zones among three organs had a significant difference in decreasing order as follows: liver, muscle, and kidney in the ex vivo study (p = 0.001); muscle, liver, and kidney in the in vivo study (p < 0.0001). The areas of ablation zones between ex vivo and in vivo had a significant difference in the liver and muscle (each p < 0.05). There was no significant correlation between the areas of ablation zones and pre-impedances in both studies. Conclusions: Renal RFA produced the smallest ablation zone in both in vivo and ex vivo studies. Muscular RFA demonstrated the largest ablation zone in the in vivo study, and hepatic RFA showed the largest ablation zone in the ex vivo study. This variability in the tissues should be considered for performing an optimized RFA for each organ site.

  17. Steady γ-Ray Effects on the Performance of PPP-BOTDA and TW-COTDR Fiber Sensing

    Directory of Open Access Journals (Sweden)

    Isabelle Planes

    2017-02-01

    Full Text Available We investigated the evolution of the performances of Pulse Pre Pump-Brillouin Time Domain Analysis (PPP-BOTDA and Tunable Wavelength Coherent Optical Time Domain Reflectometry (TW-COTDR fiber-based temperature and strain sensors when the sensing optical fiber is exposed to two γ-ray irradiation conditions: (i at room temperature and a dose rate of 370 Gy(SiO2/h up to a total ionizing dose (TID of 56 kGy; (ii at room temperature and a dose rate of 25 kGy(SiO2/h up to a TID of 10 MGy. Two main different classes of single-mode optical fibers have been tested in situ, radiation-tolerant ones: fluorine-doped or nitrogen-doped core fibers, as well as Telecom-grade germanosilicate ones. Brillouin and Rayleigh Sensitivities of N-Doped fibers were not reported yet, and these characterizations pave the way for a novel and alternative sensing scheme. Moreover, in these harsh conditions, our results showed that the main parameter affecting the sensor sensitivity remains the Radiation Induced Attenuation (RIA at its operation wavelength of 1550 nm. RIA limits the maximal sensing range but does not influence the measurement uncertainty. F-doped fiber is the most tolerant against RIA with induced losses below 8 dB/km after a 56 kGy accumulated dose whereas the excess losses of other fibers exceed 22 dB/km. Both Rayleigh and Brillouin signatures that are exploited by the PPP-BOTDA and the TW-COTDR remain unchanged (within our experimental uncertainties. The strain and temperature coefficients of the various fibers under test are not modified by radiations, at these dose/dose rate levels. Consequently, this enables the design of a robust strain and temperature sensing architecture for the monitoring of radioactive waste disposals.

  18. Fandom squared: Web 2.0 and fannish production

    Directory of Open Access Journals (Sweden)

    Jeff Watson

    2010-09-01

    Full Text Available By comparing how businesses and fan communities conceive of, foster, and manage participation, I outline the tensions that reveal the emerging shape of fan practice in the era of Web 2.0. The producer-consumer relationship does not map neatly onto the producer-fan relationship. The more that media companies integrate fans into the process of producing and developing content, the less agency fans actually feel.

  19. Facilitating Student-Generated Content Using Web 2.0 Technologies

    Science.gov (United States)

    Lee, Eunbae

    2011-01-01

    Web 2.0 technologies have created a trend of user-generated content by supporting media production, collaboration, communication, and dissemination. User-generated content is translated into student-generated content (SGC) in education. SGC engages learners in an authentic project that fosters students' autonomy, creativity, and real-world…

  20. Long-term efficacy and safety of ExPress implantation for treatment of open angle glaucoma

    Directory of Open Access Journals (Sweden)

    Geun Young Lee

    2017-09-01

    Full Text Available AIM: To compare the long-term efficacy and safety of ExPress implantation and standard trabeculectomy in patients with primary open angle glaucoma (POAG. METHODS: In this retrospective study, we compared 17 eyes treated by ExPress implantation with 23 eyes treated by trabeculectomy. Efficacy was assessed according to the relevant intraocular pressure (IOP values and success rates during the first year of follow-up. Postoperative corneal endothelial cell loss was also compared. RESULTS: The number of antiglaucoma medications and the IOP reduction were similar between the 2 groups during the follow-up period. Although the mean IOP was similar, the IOP-fluctuation rate during the early postoperative period was significantly lower in the ExPress group than in the trabeculectomy group (P=0.038. A Kaplan-Meier survival curve analysis showed no significant success-rate difference between the groups (P=0.810. The corneal endothelial cell loss rate, moreover, was significantly lower in the ExPress group (P=0.05. CONCLUSION: ExPress implantation compared with trabeculectomy showed similar IOP-reduction and success rates along with lower IOP fluctuation and endothelial cell loss rates. For this reason, it can be considered to be the treatment of choice for patients with advanced glaucoma or low corneal endothelial cell density.

  1. Long-term efficacy and safety of ExPress implantation for treatment of open angle glaucoma.

    Science.gov (United States)

    Lee, Geun Young; Lee, Chong Eun; Lee, Kyoo Won; Seo, Sam

    2017-01-01

    To compare the long-term efficacy and safety of ExPress implantation and standard trabeculectomy in patients with primary open angle glaucoma (POAG). In this retrospective study, we compared 17 eyes treated by ExPress implantation with 23 eyes treated by trabeculectomy. Efficacy was assessed according to the relevant intraocular pressure (IOP) values and success rates during the first year of follow-up. Postoperative corneal endothelial cell loss was also compared. The number of antiglaucoma medications and the IOP reduction were similar between the 2 groups during the follow-up period. Although the mean IOP was similar, the IOP-fluctuation rate during the early postoperative period was significantly lower in the ExPress group than in the trabeculectomy group ( P =0.038). A Kaplan-Meier survival curve analysis showed no significant success-rate difference between the groups ( P =0.810). The corneal endothelial cell loss rate, moreover, was significantly lower in the ExPress group ( P =0.05). ExPress implantation compared with trabeculectomy showed similar IOP-reduction and success rates along with lower IOP fluctuation and endothelial cell loss rates. For this reason, it can be considered to be the treatment of choice for patients with advanced glaucoma or low corneal endothelial cell density.

  2. Long-term efficacy and safety of ExPress implantation for treatment of open angle glaucoma

    Science.gov (United States)

    Lee, Geun Young; Lee, Chong Eun; Lee, Kyoo Won; Seo, Sam

    2017-01-01

    AIM To compare the long-term efficacy and safety of ExPress implantation and standard trabeculectomy in patients with primary open angle glaucoma (POAG). METHODS In this retrospective study, we compared 17 eyes treated by ExPress implantation with 23 eyes treated by trabeculectomy. Efficacy was assessed according to the relevant intraocular pressure (IOP) values and success rates during the first year of follow-up. Postoperative corneal endothelial cell loss was also compared. RESULTS The number of antiglaucoma medications and the IOP reduction were similar between the 2 groups during the follow-up period. Although the mean IOP was similar, the IOP-fluctuation rate during the early postoperative period was significantly lower in the ExPress group than in the trabeculectomy group (P=0.038). A Kaplan-Meier survival curve analysis showed no significant success-rate difference between the groups (P=0.810). The corneal endothelial cell loss rate, moreover, was significantly lower in the ExPress group (P=0.05). CONCLUSION ExPress implantation compared with trabeculectomy showed similar IOP-reduction and success rates along with lower IOP fluctuation and endothelial cell loss rates. For this reason, it can be considered to be the treatment of choice for patients with advanced glaucoma or low corneal endothelial cell density. PMID:28944196

  3. International Spinal Cord Injury Core Data Set (version 2.0)

    DEFF Research Database (Denmark)

    Biering-Sørensen, F; DeVivo, M J; Charlifue, S

    2017-01-01

    STUDY DESIGN: The study design includes expert opinion, feedback, revisions and final consensus. OBJECTIVES: The objective of the study was to present the new knowledge obtained since the International Spinal Cord Injury (SCI) Core Data Set (Version 1.0) published in 2006, and describe the adjust......STUDY DESIGN: The study design includes expert opinion, feedback, revisions and final consensus. OBJECTIVES: The objective of the study was to present the new knowledge obtained since the International Spinal Cord Injury (SCI) Core Data Set (Version 1.0) published in 2006, and describe...... the adjustments made in Version 2.0, including standardization of data reporting. SETTING: International. METHODS: Comments received from the SCI community were discussed in a working group (WG); suggestions from the WG were reviewed and revisions were made. All suggested revisions were considered, and a final...... version was circulated for final approval. RESULTS: The International SCI Core Data Set (Version 2.0) consists of 25 variables. Changes made to this version include the deletion of one variable 'Total Days Hospitalized' and addition of two variables 'Date of Rehabilitation Admission' and 'Date of Death...

  4. Ex vivo MR volumetry of human brain hemispheres.

    Science.gov (United States)

    Kotrotsou, Aikaterini; Bennett, David A; Schneider, Julie A; Dawe, Robert J; Golak, Tom; Leurgans, Sue E; Yu, Lei; Arfanakis, Konstantinos

    2014-01-01

    The aims of this work were to (a) develop an approach for ex vivo MR volumetry of human brain hemispheres that does not contaminate the results of histopathological examination, (b) longitudinally assess regional brain volumes postmortem, and (c) investigate the relationship between MR volumetric measurements performed in vivo and ex vivo. An approach for ex vivo MR volumetry of human brain hemispheres was developed. Five hemispheres from elderly subjects were imaged ex vivo longitudinally. All datasets were segmented. The longitudinal behavior of volumes measured ex vivo was assessed. The relationship between in vivo and ex vivo volumetric measurements was investigated in seven elderly subjects imaged both antemortem and postmortem. This approach for ex vivo MR volumetry did not contaminate the results of histopathological examination. For a period of 6 months postmortem, within-subject volume variation across time points was substantially smaller than intersubject volume variation. A close linear correspondence was detected between in vivo and ex vivo volumetric measurements. Regional brain volumes measured with this approach for ex vivo MR volumetry remain relatively unchanged for a period of 6 months postmortem. Furthermore, the linear relationship between in vivo and ex vivo MR volumetric measurements suggests that this approach captures information linked to antemortem macrostructural brain characteristics. Copyright © 2013 Wiley Periodicals, Inc.

  5. Library 2.0: Balancing the Risks and Benefits to Maximise the Dividends

    Science.gov (United States)

    Kelly, Brian; Bevan, Paul; Akerman, Richard; Alcock, Jo; Fraser, Josie

    2009-01-01

    Purpose: The purpose of this paper is to provide a number of examples of how Web 2.0 technologies and approaches (Library 2.0) are being used within the library sector. The paper acknowledges that there are a variety of risks associated with such approaches. The paper describes the different types of risks and outlines a risk assessment and risk…

  6. Development Status of Diffusion Code RAST-K 2.0 at UNIST

    Energy Technology Data Exchange (ETDEWEB)

    Park, Minyong; Zheng, Youqi; Choe, Jiwon; Zhang, Peng; Lee, Deokjung [UNIST, Ulsan (Korea, Republic of); Lee, Eunki; Shin, Hocheol [KHNP Central Research Institute, Daejeon (Korea, Republic of)

    2016-10-15

    The non-linear scheme was used based on the 2-group CMFD and a three dimensional multi -group unified nodal method (UNM). To consider the history effects, the main heavy isotopes were tracked by micro-depletion module using CRAM. The simplified 1-D single channel thermal hydraulic solver from nTACER is implemented. The θ method was adopted in the transient calculation. To get detailed pin-wise power and burnup distribution, Pin power reconstruction module was implemented. Also automatic control logic to calculate MTC, FTC, control rod worth was implemented. To perform multicycle analysis, restart and shuffling/rotation module has been implemented. To link between CASMO-4E and RAST-K 2.0, CATORA (CASMO TO RAST-K 2.0) code was developed. Unlike the other diffusion codes, RAST-K 2.0 depletion module uses CRAM and extended depletion chain for fission products. Most lattice codes give cumulative fission yield of Pm-149 without considering Pm-148 and Pm-149 capture reaction which will lead to the increase of Sm-149 number density. This paper reports the status of RAST-K 2.0 code development at UNIST. The new code applies a new kernel based on the two-node UNM with CMFD, and θ method for kinetic calculation. Also, the microdepletion calculation is used to consider the history effects. And other modules and functions also implemented such as pin power reconstruction, branch calculation, restart, multi-cycle, and 1-D single channel T/H solver.

  7. ROMUSE 2.0 User Manual

    Energy Technology Data Exchange (ETDEWEB)

    Khuwaileh, Bassam [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Turinsky, Paul [North Carolina State Univ., Raleigh, NC (United States); Williams, Brian J. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-10-04

    ROMUSE (Reduced Order Modeling Based Uncertainty/Sensitivity Estimator) is an effort within the Consortium for Advanced Simulation of Light water reactors (CASL) to provide an analysis tool to be used in conjunction with reactor core simulators, especially the Virtual Environment for Reactor Applications (VERA). ROMUSE is written in C++ and is currently capable of performing various types of parameters perturbations, uncertainty quantification, surrogate models construction and subspace analysis. Version 2.0 has the capability to interface with DAKOTA which gives ROMUSE access to the various algorithms implemented within DAKOTA. ROMUSE is mainly designed to interface with VERA and the Comprehensive Modeling and Simulation Suite for Nuclear Safety Analysis and Design (SCALE) [1,2,3], however, ROMUSE can interface with any general model (e.g. python and matlab) with Input/Output (I/O) format that follows the Hierarchical Data Format 5 (HDF5). In this brief user manual, the use of ROMUSE will be overviewed and example problems will be presented and briefly discussed. The algorithms provided here range from algorithms inspired by those discussed in Ref.[4] to nuclear-specific algorithms discussed in Ref. [3].

  8. FLUTAN 2.0. Input specifications

    International Nuclear Information System (INIS)

    Willerding, G.; Baumann, W.

    1996-05-01

    FLUTAN is a highly vectorized computer code for 3D fluiddynamic and thermal-hydraulic analyses in Cartesian or cylinder coordinates. It is related to the family of COMMIX codes originally developed at Argonne National Laboratory, USA, and particularly to COMMIX-1A and COMMIX-1B, which were made available to FZK in the frame of cooperation contracts within the fast reactor safety field. FLUTAN 2.0 is an improved version of the FLUTAN code released in 1992. It offers some additional innovations, e.g. the QUICK-LECUSSO-FRAM techniques for reducing numerical diffusion in the k-ε turbulence model equations; a higher sophisticated wall model for specifying a mass flow outside the surface walls together with its flow path and its associated inlet and outlet flow temperatures; and a revised and upgraded pressure boundary condition to fully include the outlet cells in the solution process of the conservation equations. Last but not least, a so-called visualization option based on VISART standards has been provided. This report contains detailed input instructions, presents formulations of the various model options, and explains how to use the code by means of comprehensive sample input. (orig.) [de

  9. Accuracy of Alcon WaveLight® EX500 optical pachymetry during LASIK

    Directory of Open Access Journals (Sweden)

    Mifflin MD

    2017-08-01

    Full Text Available Mark D Mifflin,1 Xavier M Mortensen,1 Brent S Betts,1 Cole Gross,2 Brian Zaugg1 1Department of Ophthalmology and Visual Sciences, John A Moran Eye Center, University of Utah, Salt Lake City, UT, 2University of Nevada School of Medicine, Reno, NV, USA Purpose: To study the accuracy and reliability of optical pachymetry using the Alcon WaveLight EX500 during laser-assisted in situ keratomileusis (LASIK. Materials and methods: This was a retrospective chart review of 90 eyes from 45 patients who had undergone LASIK (mean age 35.2±8.2 years; 19 males, 26 females. The WaveLight FS200 femtosecond laser was programmed to cut LASIK flaps at a desired depth of 120 µm. Optical low-coherence reflectometry (WaveLight EX500 was used to measure central corneal thickness prior to lifting the flap, and the residual stromal bed immediately after excimer ablation. Flap thickness (FT was calculated using simple subtraction. Optical coherence tomography (OCT was used to measure central corneal thickness, flap thickness, and residual stromal bed in the postoperative period and the results compared to intraoperative measurements. Results: Mean programmed FS200 FT was 119 µm. Mean FT using EX500 optical pachymetry was 109 µm. The difference between FS200- programmed and EX500-measured FT was 9 µm (P<0.001. There was also a significant difference between the EX500 and OCT FT (109 µm vs 119 µm, respectively; P<0.001. Conclusion: FT values calculated using intraoperative EX500 optical pachymetry were significantly lower than programmed FS200 values or OCT measurements. Keywords: flap thickness, optical coherence tomography, femtosecond laser

  10. Creating and sharing clinical decision support content with Web 2.0: Issues and examples.

    Science.gov (United States)

    Wright, Adam; Bates, David W; Middleton, Blackford; Hongsermeier, Tonya; Kashyap, Vipul; Thomas, Sean M; Sittig, Dean F

    2009-04-01

    Clinical decision support is a powerful tool for improving healthcare quality and patient safety. However, developing a comprehensive package of decision support interventions is costly and difficult. If used well, Web 2.0 methods may make it easier and less costly to develop decision support. Web 2.0 is characterized by online communities, open sharing, interactivity and collaboration. Although most previous attempts at sharing clinical decision support content have worked outside of the Web 2.0 framework, several initiatives are beginning to use Web 2.0 to share and collaborate on decision support content. We present case studies of three efforts: the Clinfowiki, a world-accessible wiki for developing decision support content; Partners Healthcare eRooms, web-based tools for developing decision support within a single organization; and Epic Systems Corporation's Community Library, a repository for sharing decision support content for customers of a single clinical system vendor. We evaluate the potential of Web 2.0 technologies to enable collaborative development and sharing of clinical decision support systems through the lens of three case studies; analyzing technical, legal and organizational issues for developers, consumers and organizers of clinical decision support content in Web 2.0. We believe the case for Web 2.0 as a tool for collaborating on clinical decision support content appears strong, particularly for collaborative content development within an organization.

  11. Phase coexistence and high piezoelectric properties in (K0.40Na0.60)0.96Li0.04Nb0.80Ta0.20O3 ceramics

    International Nuclear Information System (INIS)

    Wu Ling; Zhang Jialiang; Shao Shoufu; Zheng Peng; Wang Chunlei

    2008-01-01

    Lead-free (K x Na 1-x ) 0.96 Li 0.04 Nb 0.80 Ta 0.20 O 3 ceramics with x = 0.10-0.70 were prepared by the conventional solid-state reaction technique. The influence of the K/Na ratio on the microstructure, crystallographic structure, phase transition and piezoelectric properties was investigated. It has been disclosed that the phase transition temperature T O-T drastically decreases with x in the narrow compositional range of x 0.30-0.40 and the phase coexistence of the orthorhombic structure and the tetragonal structure occurs near x = 0.40. The ceramics with x = 0.40 shows high piezoelectric properties (d 33 = 254 pC N -1 , k p = 51.5%, k t = 49.4% and k 33 = 66.6%, respectively) with low dielectric loss (tan δ 1.5%) and weak temperature dependence between 10 and 85 deg. C. In particular, the piezoelectric properties remain almost unchanged in the thermal ageing test from -125 to 300 deg. C. Therefore, this ceramic is considered to be a very promising lead-free piezoelectric material for practical applications. The relation of piezoelectric properties with morphotropic phase boundary and polymorphic phase transition was discussed

  12. Effect of a Mycoplasma hominis-like Mycoplasma on the infection of HEp-2 cells by the TW-183 strain of Chlamydia pneumoniae.

    Science.gov (United States)

    Castilla, E A; Wadowsky, R M

    2000-02-01

    We isolated a Mycoplasma hominis-like mycoplasma from a stock culture of Chlamydia pneumoniae TW-183 obtained from the American Type Culture Collection and eradicated the contaminant by treating the stock suspension with a nonionic detergent, Igepal CA-630. The M. hominis-like mycoplasma neither inhibits nor enhances the infectivity of C. pneumoniae for HEp-2 cells.

  13. Effect of a Mycoplasma hominis-Like Mycoplasma on the Infection of HEp-2 Cells by the TW-183 Strain of Chlamydia pneumoniae

    OpenAIRE

    Castilla, Elias A.; Wadowsky, Robert M.

    2000-01-01

    We isolated a Mycoplasma hominis-like mycoplasma from a stock culture of Chlamydia pneumoniae TW-183 obtained from the American Type Culture Collection and eradicated the contaminant by treating the stock suspension with a nonionic detergent, Igepal CA-630. The M. hominis-like mycoplasma neither inhibits nor enhances the infectivity of C. pneumoniae for HEp-2 cells.

  14. Integrating web 2.0 in clinical research education in a developing country.

    Science.gov (United States)

    Amgad, Mohamed; AlFaar, Ahmad Samir

    2014-09-01

    The use of Web 2.0 tools in education and health care has received heavy attention over the past years. Over two consecutive years, Children's Cancer Hospital - Egypt 57357 (CCHE 57357), in collaboration with Egyptian universities, student bodies, and NGOs, conducted a summer course that supports undergraduate medical students to cross the gap between clinical practice and clinical research. This time, there was a greater emphasis on reaching out to the students using social media and other Web 2.0 tools, which were heavily used in the course, including Google Drive, Facebook, Twitter, YouTube, Mendeley, Google Hangout, Live Streaming, Research Electronic Data Capture (REDCap), and Dropbox. We wanted to investigate the usefulness of integrating Web 2.0 technologies into formal educational courses and modules. The evaluation survey was filled in by 156 respondents, 134 of whom were course candidates (response rate = 94.4 %) and 22 of whom were course coordinators (response rate = 81.5 %). The course participants came from 14 different universities throughout Egypt. Students' feedback was positive and supported the integration of Web 2.0 tools in academic courses and modules. Google Drive, Facebook, and Dropbox were found to be most useful.

  15. [Compliance of antituberculosis therapy among ex-inmates in the Madrid area].

    Science.gov (United States)

    Fernández De La Hoz, K; Fernández, S; Ordobás, M; Gómez, P; Fernández, M; Arce, A

    2001-10-01

    The inmate population is not a tight compartment without communication with the community but there is a flow of persons and thus of health problems. The high incidence of tuberculosis among inmates is therefore of concern for the Public Health System. The outcomes of antituberculosis treatment among ex-inmates released from prison in 1987 in the Madrid Area were evaluated and compared with those who remained in jail on treatment. Individuals who met the case definition of tuberculosis were included in the study. The outcome was defined as the individual status one year after the beginning of therapy. To determine the association between the study variables with outcome, odds ratios (OR) with their 95% confidence intervals were used. The Chi2 test was used to determine the statistical significance. Differences between outcomes of individuals in the two groups were observed: 69.7% of inmates had completed their therapy compared with 20.5% of ex-inmates. Treatment had to be prolonged in 15.2% of inmates compared with 46.2% in ex-inmates. The only predictor associated with therapy completion one year after the beginning was imprisonment, as OR for not having completed therapy for ex-inmates was almost 13 times higher (OR=12.94; 95% IC, 3.38-13.10) than those in jail. Special strategies should be developed that assure clinical cure of persons with factors related to non-compliance.

  16. Web 2.0 and Emerging Technologies in Online Learning

    Science.gov (United States)

    Diaz, Veronica

    2010-01-01

    As online learning continues to grow, so do the free or nearly free Web 2.0 and emerging online learning technologies available to faculty and students. This chapter explores the implementation process and corresponding considerations of adapting such tools for teaching and learning. Issues addressed include copyright, intellectual property,…

  17. Do you know the way to ... Web 2.0

    NARCIS (Netherlands)

    Kirschner, Paul A.; Wopereis, Iwan

    2013-01-01

    Kirschner, P. A., & Wopereis, I. G. J. H. (2013). Do you know the way to ... Web 2.0? In J. M. Spector, B. B. Lockee, S. E. Smaldino, & M. C. Herring (Eds.), Learning, problem solving, and mindtools: Essays in honor of David H. Jonassen (pp. 88-104). New York, NY: Routledge.

  18. The Future of Family Medicine version 2.0: reflections from Pisacano scholars.

    Science.gov (United States)

    Doohan, Noemi C; Duane, Marguerite; Harrison, Bridget; Lesko, Sarah; DeVoe, Jennifer E

    2014-01-01

    The Future of Family Medicine (FFM) project has helped shape and direct the evolution of primary care medicine over the past decade. Pisacano Scholars, a group of leaders in family medicine supported by the American Board of Family Medicine, gathered for a 2-day symposium in April 2013 to explore the history of the FFM project and outline a vision for the next phase of this work-FFM version 2.0 (v2.0). After learning about the original FFM project (FFM v1.0), the group held interactive discussions using the World Café approach to conversational leadership. This commentary summarizes the discussions and highlights major themes relevant to FFM v2.0 identified by the group. The group endorsed the FFM v1.0 recommendations as still relevant and marvelled at the progress made toward achieving many of those goals. Most elements of FFM v1.0 have moved forward, and some have been incorporated into policy blueprints for reform. Now is the time to refocus attention on facets of FFM v1.0 not yet realized and to identify key aspects missing from FFM v1.0. The Pisacano Scholars are committed to moving the FFM goals forward and hope that this expression of the group's vision will help to do so.

  19. Enhancing promotional strategies within social marketing programs: use of Web 2.0 social media.

    Science.gov (United States)

    Thackeray, Rosemary; Neiger, Brad L; Hanson, Carl L; McKenzie, James F

    2008-10-01

    The second generation of Internet-based applications (i.e., Web 2.0), in which users control communication, holds promise to significantly enhance promotional efforts within social marketing campaigns. Web 2.0 applications can directly engage consumers in the creative process by both producing and distributing information through collaborative writing, content sharing, social networking, social bookmarking, and syndication. Web 2.0 can also enhance the power of viral marketing by increasing the speed at which consumers share experiences and opinions with progressively larger audiences. Because of the novelty and potential effectiveness of Web 2.0, social marketers may be enticed to prematurely incorporate related applications into promotional plans. However, as strategic issues such as priority audience preferences, selection of appropriate applications, tracking and evaluation, and related costs are carefully considered, Web 2.0 will expand to allow health promotion practitioners more direct access to consumers with less dependency on traditional communication channels.

  20. Ex-vivo MR Volumetry of Human Brain Hemispheres

    Science.gov (United States)

    Kotrotsou, Aikaterini; Bennett, David A.; Schneider, Julie A.; Dawe, Robert J.; Golak, Tom; Leurgans, Sue E.; Yu, Lei; Arfanakis, Konstantinos

    2013-01-01

    Purpose The aims of this work were to: a) develop an approach for ex-vivo MR volumetry of human brain hemispheres that does not contaminate the results of histopathological examination, b) longitudinally assess regional brain volumes postmortem, and c) investigate the relationship between MR volumetric measurements performed in-vivo and ex-vivo. Methods An approach for ex-vivo MR volumetry of human brain hemispheres was developed. Five hemispheres from elderly subjects were imaged ex-vivo longitudinally. All datasets were segmented. The longitudinal behavior of volumes measured ex-vivo was assessed. The relationship between in-vivo and ex-vivo volumetric measurements was investigated in seven elderly subjects imaged both ante-mortem and postmortem. Results The presented approach for ex-vivo MR volumetry did not contaminate the results of histopathological examination. For a period of 6 months postmortem, within-subject volume variation across time points was substantially smaller than inter-subject volume variation. A close linear correspondence was detected between in-vivo and ex-vivo volumetric measurements. Conclusion Regional brain volumes measured with the presented approach for ex-vivo MR volumetry remain relatively unchanged for a period of 6 months postmortem. Furthermore, the linear relationship between in-vivo and ex-vivo MR volumetric measurements suggests that the presented approach captures information linked to ante-mortem macrostructural brain characteristics. PMID:23440751