WorldWideScience

Sample records for intermediate-mass im subgiants

  1. Constraining the Population of Small Close-in Planets Around Evolved Intermediate Mass Stars

    Science.gov (United States)

    Medina, Amber; Johnson, John Asher

    2018-01-01

    Intermediate mass stars ( > 1.3 M_Sun) have high occurrence rates of Jupiter mass planets in predominately long period orbits (~1.0 AU). There is a prominent planet gap, known as the ‘Planet Desert’, for low mass planets (Super-Earth, Neptune) < 0.5 AU from subgiants, the evolved counterpart to intermediate mass stars. Thus far, using current radial velocity methods, we have not been able to detect short period planets around subgiants due to noise from p-mode oscillations perhaps mimicking radial velocity signals (~5 m/s) in this planetary regime. Here we present techniques and preliminary results with regards to finding low mass, short period planets around subgiants and its implications for the Planet Desert.

  2. Intermediate-Mass Black Holes

    Science.gov (United States)

    Miller, M. Coleman; Colbert, E. J. M.

    2004-01-01

    The mathematical simplicity of black holes, combined with their links to some of the most energetic events in the universe, means that black holes are key objects for fundamental physics and astrophysics. Until recently, it was generally believed that black holes in nature appear in two broad mass ranges: stellar-mass (M~3 20 M⊙), which are produced by the core collapse of massive stars, and supermassive (M~106 1010 M⊙), which are found in the centers of galaxies and are produced by a still uncertain combination of processes. In the last few years, however, evidence has accumulated for an intermediate-mass class of black holes, with M~102 104 M⊙. If such objects exist they have important implications for the dynamics of stellar clusters, the formation of supermassive black holes, and the production and detection of gravitational waves. We review the evidence for intermediate-mass black holes and discuss future observational and theoretical work that will help clarify numerous outstanding questions about these objects.

  3. On the Origin of Sub-subgiant Stars. I. Demographics

    Energy Technology Data Exchange (ETDEWEB)

    Geller, Aaron M. [Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, IL 60201 (United States); Leiner, Emily M.; Mathieu, Robert D. [Department of Astronomy, University of Wisconsin–Madison, 475 North Charter Street, Madison, WI 53706 (United States); Bellini, Andrea; Watkins, Laura L. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Gleisinger, Robert; Haggard, Daryl [Department of Physics, McGill University, McGill Space Institute, 3550 University Street, Montreal, QC H3A 2A7 (Canada); Kamann, Sebastian [Institut für Astrophysik, Universität Göttingen, Friedrich-Hund-Platz 1, D-37077 Göttingen (Germany); Leigh, Nathan W. C.; Zurek, David [Department of Astrophysics, American Museum of Natural History, Central Park West and 79th Street, New York, NY 10024 (United States); Sills, Alison, E-mail: a-geller@northwestern.edu [Department of Physics and Astronomy, McMaster University, Hamilton, ON L8S 4M1 (Canada)

    2017-05-10

    Sub-subgiants are stars that are observed to be redder than normal main-sequence stars and fainter than normal subgiant (and giant) stars in an optical color–magnitude diagram (CMD). The red straggler stars, which lie redward of the red giant branch, may be related and are often grouped together with the sub-subgiants in the literature. These stars defy our standard theory of single-star evolution and are important tests for binary evolution and stellar collision models. In total, we identify 65 sub-subgiants (SSG) and red stragglers (RS) in 16 open and globular star clusters from the literature; 50 of these, including 43 sub-subgiants, pass our strict membership selection criteria (though the remaining sources may also be cluster members). In addition to their unique location on the CMD, we find that at least 58% (25/43) of sub-subgiants in this sample are X-ray sources with typical 0.5–2.5 keV luminosities of order 10{sup 30}–10{sup 31} erg s{sup −1}. Their X-ray luminosities and optical–to–X-ray flux ratios are similar to those of RS CVn active binaries. At least 65% (28/43) of the sub-subgiants in our sample are variables, 21 of which are known to be radial-velocity binaries. Typical variability periods are ≲15 days. At least 33% (14/43) of the sub-subgiants are H α emitters. These observational demographics provide strong evidence that binarity is important for sub-subgiant formation. Finally, we find that the number of sub-subgiants per unit mass increases toward lower-mass clusters, such that the open clusters in our sample have the highest specific frequencies of sub-subgiants.

  4. Asteroseismic Diagram for Subgiants and Red Giants

    Energy Technology Data Exchange (ETDEWEB)

    Gai, Ning; Tang, Yanke [College of Physics and Electronic information, Dezhou University, Dezhou 253023 (China); Yu, Peng [College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331 (China); Dou, Xianghua, E-mail: ning_gai@163.com, E-mail: tyk450@163.com [Shandong Provincial Key Laboratory of Biophysics, Dezhou University, Dezhou 253023 (China)

    2017-02-10

    Asteroseismology is a powerful tool for constraining stellar parameters. NASA’s Kepler mission is providing individual eigenfrequencies for a huge number of stars, including thousands of red giants. Besides the frequencies of acoustic modes, an important breakthrough of the Kepler mission is the detection of nonradial gravity-dominated mixed-mode oscillations in red giants. Unlike pure acoustic modes, mixed modes probe deeply into the interior of stars, allowing the stellar core properties and evolution of stars to be derived. In this work, using the gravity-mode period spacing and the large frequency separation, we construct the ΔΠ{sub 1}–Δ ν asteroseismic diagram from models of subgiants and red giants with various masses and metallicities. The relationship ΔΠ{sub 1}–Δ ν is able to constrain the ages and masses of the subgiants. Meanwhile, for red giants with masses above 1.5 M {sub ⊙}, the ΔΠ{sub 1}–Δ ν asteroseismic diagram can also work well to constrain the stellar age and mass. Additionally, we calculate the relative “isochrones” τ , which indicate similar evolution states especially for similar mass stars, on the ΔΠ{sub 1}–Δ ν diagram.

  5. Intermediate mass distribution of the dual resonance pomeron

    International Nuclear Information System (INIS)

    Chiu, C.B.; Matsuda, S.

    1978-01-01

    The intermediate mass distribution of the dual resonance pomeron is determined at the one-loop level and it is shown that the mass distribution obtained is remarkably similar to a suitably defined mass distribution in the dual multiperipheral model. Thus it is suggestive to identify the intermediate states of the dual resonance pomeron with multiperipheral processes. (Auth.)

  6. Neutrino mass as the probe of intermediate mass scales

    International Nuclear Information System (INIS)

    Senjanovic, G.

    1980-01-01

    A discussion of the calculability of neutrino mass is presented. The possibility of neutrinos being either Dirac or Majorana particles is analyzed in detail. Arguments are offered in favor of the Majorana case: the smallness of neutrino mass is linked to the maximality of parity violation in weak interactions. It is shown how the measured value of neutrino mass would probe the existence of an intermediate mass scale, presumably in the TeV region, at which parity is supposed to become a good symmetry. Experimental consequences of the proposed scheme are discussed, in particular the neutrino-less double β decay, where observation would provide a crucial test of the model, and rare muon decays such as μ → eγ and μ → ee anti e. Finally, the embedding of this model in an O(10) grand unified theory is analyzed, with the emphasis on the implications for intermediate mass scales that it offers. It is concluded that the proposed scheme provides a distinct and testable alternative for understanding the smallness of neutrino mass. 4 figures

  7. Tidal disruption of white dwarfs by intermediate mass black holes

    Directory of Open Access Journals (Sweden)

    Bode T.

    2012-12-01

    Full Text Available Modeling ultra-close encounters between a white dwarf and a spinning, intermediate mass black hole requires a full general relativistic treatment of gravity. This paper summarizes results from such a study. Our results show that the disruption process and prompt accretion of the debris strongly depend on the magnitude and orientation of the black hole spin. On the other hand, the late-time accretion onto the black hole follows the same decay, Ṁ ∝  t−5/3, estimated from Newtonian gravity disruption studies. The spectrum of the fallback material peaks in the soft X-rays and sustains Eddington luminosity for 1–3 yrs after the disruption. The orientation of the black hole spin has also a profound effect on how the outflowing debris obscures the central region. The disruption produces a burst of gravitational radiation with characteristic frequencies of ∼3.2 Hz and strain amplitudes of ∼10−18 for galactic intermediate mass black holes.

  8. Neutrino mass as the probe of intermediate mass scales

    Energy Technology Data Exchange (ETDEWEB)

    Senjanovic, G.

    1980-01-01

    A discussion of the calculability of neutrino mass is presented. The possibility of neutrinos being either Dirac or Majorana particles is analyzed in detail. Arguments are offered in favor of the Majorana case: the smallness of neutrino mass is linked to the maximality of parity violation in weak interactions. It is shown how the measured value of neutrino mass would probe the existence of an intermediate mass scale, presumably in the TeV region, at which parity is supposed to become a good symmetry. Experimental consequences of the proposed scheme are discussed, in particular the neutrino-less double ..beta.. decay, where observation would provide a crucial test of the model, and rare muon decays such as ..mu.. ..-->.. e..gamma.. and ..mu.. ..-->.. ee anti e. Finally, the embedding of this model in an O(10) grand unified theory is analyzed, with the emphasis on the implications for intermediate mass scales that it offers. It is concluded that the proposed scheme provides a distinct and testable alternative for understanding the smallness of neutrino mass. 4 figures.

  9. Search for Gravitational Waves from Intermediate Mass Binary Black Holes

    Science.gov (United States)

    Blackburn, L.; Camp, J. B.; Cannizzo, J.; Stroeer, A. S.

    2012-01-01

    We present the results of a weakly modeled burst search for gravitational waves from mergers of non-spinning intermediate mass black holes (IMBH) in the total mass range 100-450 solar Mass and with the component mass ratios between 1:1 and 4:1. The search was conducted on data collected by the LIGO and Virgo detectors between November of 2005 and October of 2007. No plausible signals were observed by the search which constrains the astrophysical rates of the IMBH mergers as a function of the component masses. In the most efficiently detected bin centered on 88 + 88 solar Mass , for non-spinning sources, the rate density upper limit is 0.13 per Mpc(exp 3) per Myr at the 90% confidence level.

  10. Searching for intermediate-mass black holes via optical variability

    Science.gov (United States)

    Adler-Levine, Ryan; Moran, Edward C.; Kay, Laura

    2018-01-01

    A handful of nearby dwarf galaxies with intermediate-mass black holes (IMBHs) in their nuclei display significant optical variability on short timescales. To investigate whether dwarf galaxy AGNs as a class exhibit similar variability, we have monitored a sample of low-mass galaxies that possess spectroscopically confirmed type 1 AGNs. However, because of the variations in seeing, focus, and guiding errors that occur in images taken at different epochs, analyses based on aperture photometry are ineffective. We have thus developed a new method for matching point-spread functions in images that permits use of image subtraction photometry techniques. Applying this method to our photometric data, we have confirmed that several galaxies with IMBHs are indeed variable, which suggests that variability can be used to search for IMBHs in low-mass galaxies whose emission-line properties are ambiguous.

  11. Non-adiabatic study of the Kepler subgiant KIC 6442183

    Directory of Open Access Journals (Sweden)

    Grosjean M.

    2015-01-01

    Full Text Available Thanks to the precision of Kepler observations, [3] were able to measure the linewidth and amplitude of individual modes (including mixed modes in several subgiant power spectra. We perform a forward modelling of a Kepler subgiant based on surface properties and observed frequencies. Non-adiabatic computations including a time- dependent treatment of convection give the lifetimes of radial and non-radial modes. Next, combining the lifetimes and inertias with a stochastic excitation model gives the amplitudes of the modes. We can now directly compare theoretical and observed linewidths and amplitudes of mixed-modes to obtain new constraints on our theoretical models.

  12. Production of intermediate-mass dileptons in relativistic heavy ion collisions

    International Nuclear Information System (INIS)

    Kvasnikova, Ioulia; Gale, Charles; Kumar Srivastava, Dinesh

    2002-01-01

    The production of intermediate-mass dileptons in ultrarelativistic nuclear collisions at SPS energies is studied. The acceptance and detector resolution inherent to measurements by the NA50 experimental collaboration are accurately modeled. The measured centrality dependence of the intermediate mass lepton pair excess is also addressed

  13. PROPERTIES OF OSCILLATION MODES IN SUBGIANT STARS OBSERVED BY KEPLER

    Energy Technology Data Exchange (ETDEWEB)

    Benomar, O.; Bedding, T. R.; Stello, D.; White, T. R.; Kuehn, C. A. [Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, Sydney, NSW 2006 (Australia); Mosser, B.; Belkacem, K. [LESIA, Observatoire de Paris, CNRS UMR 8109, Universite Paris Diderot, 5 Place J. Janssen, F-92195 Meudon (France); Garcia, R. A. [Laboratoire AIM, CEA/DSM-CNRS-Universite Paris Diderot (France); IRFU/SAp, Centre de Saclay, F-91191 Gif-sur-Yvette Cedex (France); Deheuvels, S. [Institut de Recherche en Astrophysique et Planetologie, Universite de Toulouse, UPS-OMP, CNRS, 14 Avenue Edouard Belin, F-31400 Toulouse (France); Christensen-Dalsgaard, J. [Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C (Denmark)

    2013-04-20

    Mixed modes seen in evolved stars carry information on their deeper layers that can place stringent constraints on their physics and on their global properties (mass, age, etc.). In this study, we present a method to identify and measure all oscillatory mode characteristics (frequency, height, width). Analyzing four subgiant stars, we present the first measure of the effect of the degree of mixture on the l = 1 mixed mode characteristics. We also show that some stars have measurable l = 2 mixed modes and discuss the interest of their measure to constrain the deeper layers of stars.

  14. Asteroseismology of KIC 7107778: a binary comprising almost identical subgiants

    Science.gov (United States)

    Li, Yaguang; Bedding, Timothy R.; Li, Tanda; Bi, Shaolan; Murphy, Simon J.; Corsaro, Enrico; Chen, Li; Tian, Zhijia

    2018-05-01

    We analyse an asteroseismic binary system: KIC 7107778, a non-eclipsing, unresolved target, with solar-like oscillations in both components. We used Kepler short cadence time series spanning nearly 2 yr to obtain the power spectrum. Oscillation mode parameters were determined using Bayesian inference and a nested sampling Monte Carlo algorithm with the DIAMONDS package. The power profiles of the two components fully overlap, indicating their close similarity. We modelled the two stars with MESA and calculated oscillation frequencies with GYRE. Stellar fundamental parameters (mass, radius, and age) were estimated by grid modelling with atmospheric parameters and the oscillation frequencies of l = 0, 2 modes as constraints. Most l = 1 mixed modes were identified with models searched using a bisection method. Stellar parameters for the two sub-giant stars are MA = 1.42 ± 0.06 M⊙, MB = 1.39 ± 0.03 M⊙, RA = 2.93 ± 0.05 R⊙, RB = 2.76 ± 0.04 R⊙, tA = 3.32 ± 0.54 Gyr and tB = 3.51 ± 0.33 Gyr. The mass difference of the system is ˜1 per cent. The results confirm their simultaneous birth and evolution, as is expected from binary formation. KIC 7107778 comprises almost identical twins, and is the first asteroseismic sub-giant binary to be detected.

  15. THE SMALL-SCALE PHYSICAL STRUCTURE AND FRAGMENTATION DIFFERENCE OF TWO EMBEDDED INTERMEDIATE-MASS PROTOSTARS IN ORION

    International Nuclear Information System (INIS)

    Van Kempen, T. A.; Longmore, S. N.; Johnstone, D.; Pillai, T.; Fuente, A.

    2012-01-01

    Intermediate-mass (IM) protostars, the bridge between the very common solar-like protostars and the more massive, but rarer, O and B stars, can only be studied at high physical spatial resolutions in a handful of clouds. In this paper, we present and analyze the continuum results from an observing campaign at the Submillimeter Array (SMA) targeting two well-studied IM protostars in Orion, NGC 2071 and L1641 S3 MMS 1. The extended SMA (eSMA) probes structure at angular resolutions up to 0.''2, revealing protostellar disks on scales of ∼200 AU. Continuum flux measurements on these scales indicate that a significant amount of mass, a few tens of M ☉ , is present. Envelope, stellar, and disk masses are derived using compact, extended, and eSMA configurations and compared against spectral energy distribution fitting models. We hypothesize that fragmentation into three components occurred within NGC 2071 at an early time, when the envelopes were less than 10% of their current masses, e.g., ☉ . No fragmentation occurred for L1641 S3 MMS 1. For NGC 2071, evidence is given that the bulk of the envelope material currently around each source was accreted after the initial fragmentation. In addition, about 30% of the total core mass is not yet associated to one of the three sources. A global accretion model is favored and a potential accretion history of NGC 2071 is presented. It is shown that the relatively low level of fragmentation in NGC 2071 was stifled compared to the expected fragmentation from a Jeans argument. Similarly, the lack of fragmentation in L1641 S3 MMS 1 is likely due to similar arguments.

  16. THE SMALL-SCALE PHYSICAL STRUCTURE AND FRAGMENTATION DIFFERENCE OF TWO EMBEDDED INTERMEDIATE-MASS PROTOSTARS IN ORION

    Energy Technology Data Exchange (ETDEWEB)

    Van Kempen, T. A. [Joint ALMA Offices, Alonso de Cordova 3107, Vitacura, Santiago (Chile); Longmore, S. N. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Johnstone, D. [National Research Council Canada, Herzberg Institute for Astronomy, 5071 West Saanich Road, Victoria, BC (Canada); Pillai, T. [Caltech, MC 249-17, 1200 East California Blvd, Pasadena, CA 91125 (United States); Fuente, A., E-mail: tkempen@alma.cl [Observatorio Astronomico Nacional (OAN), Apdo. 112, E-28803 Alcala de Henares, Madrid (Spain)

    2012-06-01

    Intermediate-mass (IM) protostars, the bridge between the very common solar-like protostars and the more massive, but rarer, O and B stars, can only be studied at high physical spatial resolutions in a handful of clouds. In this paper, we present and analyze the continuum results from an observing campaign at the Submillimeter Array (SMA) targeting two well-studied IM protostars in Orion, NGC 2071 and L1641 S3 MMS 1. The extended SMA (eSMA) probes structure at angular resolutions up to 0.''2, revealing protostellar disks on scales of {approx}200 AU. Continuum flux measurements on these scales indicate that a significant amount of mass, a few tens of M{sub Sun }, is present. Envelope, stellar, and disk masses are derived using compact, extended, and eSMA configurations and compared against spectral energy distribution fitting models. We hypothesize that fragmentation into three components occurred within NGC 2071 at an early time, when the envelopes were less than 10% of their current masses, e.g., <0.5 M{sub Sun }. No fragmentation occurred for L1641 S3 MMS 1. For NGC 2071, evidence is given that the bulk of the envelope material currently around each source was accreted after the initial fragmentation. In addition, about 30% of the total core mass is not yet associated to one of the three sources. A global accretion model is favored and a potential accretion history of NGC 2071 is presented. It is shown that the relatively low level of fragmentation in NGC 2071 was stifled compared to the expected fragmentation from a Jeans argument. Similarly, the lack of fragmentation in L1641 S3 MMS 1 is likely due to similar arguments.

  17. Necessity of intermediate mass scales in grand unified theories with spontaneously broken CP invariance

    International Nuclear Information System (INIS)

    Senjanovic, G.

    1982-07-01

    It is demonstrated that the spontaneous breakdown of CP invariance in grand unified theories requires the presence of intermediate mass scales. The simplest realization is provided by weakly broken left-right symmetry in the context of SU(2)sub(L) x SU(2)sub(R) x U(1)sub(B-L) model embedded in grand unified theories. (author)

  18. Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars

    OpenAIRE

    Bensby, T.; Johnson, J. A.; Cohen, J.; Feltzing, S.; Udalski, A.; Gould, A.; Huang, W.; Thompson, I.; Simmerer, J.; Adén, D.

    2009-01-01

    Aims. Our aims are twofold. First we aim to evaluate the robustness and accuracy of stellar parameters and detailed elemental abundances that can be derived from high-resolution spectroscopic observations of microlensed dwarf and subgiant stars. We then aim to use microlensed dwarf and subgiant stars to investigate the abundance structure and chemical evolution of the Milky Way Bulge. Contrary to the cool giant stars, with their extremely crowded spectra, the dwarf stars are hotter, their spe...

  19. Radio Detections During Two State Transitions of the Intermediate-Mass Black Hole HLX-1

    Science.gov (United States)

    Webb, Natalie; Cseh, David; Lenc, Emil; Godet, Olivier; Barret, Didier; Corbel, Stephane; Farrell, Sean; Fender, Robert; Gehrels, Neil; Heywood, Ian

    2012-01-01

    Relativistic jets are streams of plasma moving at appreciable fractions of the speed of light. They have been observed from stellar-mass black holes (approx. 3 to 20 solar masses) as well as supermassive black holes (approx.. 10(exp 6) to 10(exp 9) Solar Mass) found in the centers of most galaxies. Jets should also be produced by intermediate-mass black holes (approx. 10(exp 2) to 10(exp 5) Solar Mass), although evidence for this third class of black hole has, until recently, been weak. We report the detection of transient radio emission at the location of the intermediate-mass black hole candidate ESO 243-49 HLX-1, which is consistent with a discrete jet ejection event. These observations also allow us to refine the mass estimate of the black hole to be between approx. 9 × 10(exp 3) Solar Mass and approx. 9 × 10(exp 4) Solar Mass.

  20. Low-energy consequences of superstring-inspired models with intermediate-mass scales

    International Nuclear Information System (INIS)

    Gabbiani, F.

    1987-01-01

    The phenomenological consequences of implementing intermediate-mass scales in E 6 superstring-inspired models are discussed. Starting from a suitable Calabi-Yau compactification with b 1,1 >1, one gets, after Hosotani breaking, the rank r=5 gauge group SU(3) C x SU(2) L x U(1) Y x U(1) E , that is broken at an intermediate-mass scale down to the standard-model group. The analysis of both the intermediate and the electroweak breaking is performed in the two cases Λ c = M x and Λ c x , where Λ c is the scale at which the hidden sector gauginos condensate. It is performed quantitatively the minimization of the low-energy effective potential and the renormalization group analysis, yielding a viable set of mass spectra and confirming the reliability of the intermediate-breaking scheme

  1. Search for intermediate mass black hole binaries in the first observing run of Advanced LIGO

    OpenAIRE

    Abbott, B. P.; Abbott, R.; Adhikari, R. X.; Ananyeva, A.; Anderson, S. B.; Appert, S.; Arai, K.; Araya, M. C.; Barayoga, J. C.; Barish, B. C.; Berger, B. K.; Billingsley, G.; Blackburn, J. K.; Bork, R.; Brooks, A. F.

    2017-01-01

    During their first observational run, the two Advanced LIGO detectors attained an unprecedented sensitivity, resulting in the first direct detections of gravitational-wave signals produced by stellar-mass binary black hole systems. This paper reports on an all-sky search for gravitational waves (GWs) from merging intermediate mass black hole binaries (IMBHBs). The combined results from two independent search techniques were used in this study: the first employs a matched-filter algorithm that...

  2. An intermediate-mass black hole in the centre of the globular cluster 47 Tucanae.

    Science.gov (United States)

    Kızıltan, Bülent; Baumgardt, Holger; Loeb, Abraham

    2017-02-08

    Intermediate-mass black holes should help us to understand the evolutionary connection between stellar-mass and super-massive black holes. However, the existence of intermediate-mass black holes is still uncertain, and their formation process is therefore unknown. It has long been suspected that black holes with masses 100 to 10,000 times that of the Sun should form and reside in dense stellar systems. Therefore, dedicated observational campaigns have targeted globular clusters for many decades, searching for signatures of these elusive objects. All candidate signatures appear radio-dim and do not have the X-ray to radio flux ratios required for accreting black holes. Based on the lack of an electromagnetic counterpart, upper limits of 2,060 and 470 solar masses have been placed on the mass of a putative black hole in 47 Tucanae (NGC 104) from radio and X-ray observations, respectively. Here we show there is evidence for a central black hole in 47 Tucanae with a mass of solar masses when the dynamical state of the globular cluster is probed with pulsars. The existence of an intermediate-mass black hole in the centre of one of the densest clusters with no detectable electromagnetic counterpart suggests that the black hole is not accreting at a sufficient rate to make it electromagnetically bright and therefore, contrary to expectations, is gas-starved. This intermediate-mass black hole might be a member of an electromagnetically invisible population of black holes that grow into supermassive black holes in galaxies.

  3. Hydrogen-antihydrogen oscillations: Signature of intermediate mass scales in GUTs

    Directory of Open Access Journals (Sweden)

    Uptal Sarkar

    1983-01-01

    Full Text Available Hydrogen-antihydrogen oscillations and the double nucleon decay (pp, np and nn into two antileptons are discussed in the context of SO(10, E(6 and SU(16 GUTs. It is shown that the intermediate mass scales of the GUTs concerned govern the amplitude of these processes which are found to compete with the other baryon nonconserving processes in SU(16 GUT.

  4. Gemini Spectroscopic Survey of Young Intermediate-Mass Star-Forming Regions

    Science.gov (United States)

    Lundquist, Michael; Kobulnicky, Henry

    2018-01-01

    The majority of stars form in embedded clusters. Current research into star formation has focused on either high-mass star-forming regions or low-mass star-forming regions. We present the results from a Gemini spectroscopic survey of young intermediate-mass star-forming regions. These are star forming regions selected to produce stars up to but not exceeding 8 solar masses. We obtained spectra of these regions with GNIRS on Gemini North and Flamingos-2 on Gemini South. We also combine this with near-infrared imaging from 2MASS, UKIDSS, and VVV to study the stellar content.

  5. Symplectic no-core shell-model approach to intermediate-mass nuclei

    Science.gov (United States)

    Tobin, G. K.; Ferriss, M. C.; Launey, K. D.; Dytrych, T.; Draayer, J. P.; Dreyfuss, A. C.; Bahri, C.

    2014-03-01

    We present a microscopic description of nuclei in the intermediate-mass region, including the proximity to the proton drip line, based on a no-core shell model with a schematic many-nucleon long-range interaction with no parameter adjustments. The outcome confirms the essential role played by the symplectic symmetry to inform the interaction and the winnowing of shell-model spaces. We show that it is imperative that model spaces be expanded well beyond the current limits up through 15 major shells to accommodate particle excitations, which appear critical to highly deformed spatial structures and the convergence of associated observables.

  6. The First APOKASC Catalog of Kepler Dwarf and Subgiant Stars

    Science.gov (United States)

    Serenelli, Aldo; Johnson, Jennifer; Huber, Daniel; Pinsonneault, Marc; Ball, Warrick H.; Tayar, Jamie; Silva Aguirre, Victor; Basu, Sarbani; Troup, Nicholas; Hekker, Saskia; Kallinger, Thomas; Stello, Dennis; Davies, Guy R.; Lund, Mikkel N.; Mathur, Savita; Mosser, Benoit; Stassun, Keivan G.; Chaplin, William J.; Elsworth, Yvonne; García, Rafael A.; Handberg, Rasmus; Holtzman, Jon; Hearty, Fred; García-Hernández, D. A.; Gaulme, Patrick; Zamora, Olga

    2017-12-01

    We present the first APOKASC catalog of spectroscopic and asteroseismic data for dwarfs and subgiants. Asteroseismic data for our sample of 415 objects have been obtained by the Kepler mission in short (58.5 s) cadence, and light curves span from 30 up to more than 1000 days. The spectroscopic parameters are based on spectra taken as part of the Apache Point Observatory Galactic Evolution Experiment and correspond to Data Release 13 of the Sloan Digital Sky Survey. We analyze our data using two independent {T}{eff} scales, the spectroscopic values from DR13 and those derived from SDSS griz photometry. We use the differences in our results arising from these choices as a test of systematic temperature uncertainties and find that they can lead to significant differences in the derived stellar properties. Determinations of surface gravity ({log}g), mean density ( ), radius (R), mass (M), and age (τ) for the whole sample have been carried out by means of (stellar) grid-based modeling. We have thoroughly assessed random and systematic error sources in the spectroscopic and asteroseismic data, as well as in the grid-based modeling determination of the stellar quantities provided in the catalog. We provide stellar properties determined for each of the two {T}{eff} scales. The median combined (random and systematic) uncertainties are 2% (0.01 dex; {log}g), 3.4% ( ), 2.6% (R), 5.1% (M), and 19% (τ) for the photometric {T}{eff} scale and 2% ({log}g), 3.5% ( ), 2.7% (R), 6.3% (M), and 23% (τ) for the spectroscopic scale. We present comparisons with stellar quantities in the asteroseismic catalog by Chaplin et al. that highlight the importance of having metallicity measurements for determining stellar parameters accurately. Finally, we compare our results with those coming from a variety of sources, including stellar radii determined from TGAS parallaxes and asteroseismic analyses based on individual frequencies. We find a very good agreement for all inferred quantities

  7. Deeply inelastic collisions as a source of intermediate mass fragments at E/A = 27 MeV

    International Nuclear Information System (INIS)

    Borderie, B.; Montoya, M.; Rivet, M.F.; Jouan, D.; Cabot, C.; Fuchs, H.; Gardes, D.; Gauvin, H.; Jacquet, D.; Monnet, F.

    1988-01-01

    Intermediate-mass fragments detected in coincidence with heavy residues were measured in 40 Ar induced reactions on Ag at E/A = 27 MeV. From the observed characteristics, it is inferred that intermediate-mass fragments associated with the so-called intermediate-velocity source come mainly from deeply inelastic collisions occurring after or at the same time as preequilibrium particle emission. (orig.)

  8. Three Ancient Halo Subgiants: Precise Parallaxes, Compositions, Ages, and Implications for Globular Clusters

    DEFF Research Database (Denmark)

    VandenBerg, Don A.; Bond, Howard E.; Nelan, Edmund P.

    2014-01-01

    very soon after the Big Bang. (Stellar models that neglect diffusive processes seem to be ruled out as they would predict that HD 140283 is ~1.5 Gyr older than the universe.) The field halo subgiants appear to be older than globular clusters of similar metallicities: if distances close to those implied...

  9. Ultra-luminous X-ray sources and intermediate-mass black holes

    International Nuclear Information System (INIS)

    Cseh, David

    2012-01-01

    More than ten years ago, the discovery of Ultra-luminous X-ray sources (ULXs) has opened up an entirely new field in astrophysics. Many ideas were developed to explain the nature of these sources, like their emission mechanism, mass, and origin, without any strong conclusions. Their discovery boosted the fields of X-ray binaries, accretion physics, stellar evolution, cosmology, black hole formation and growth, due to the concept of intermediate-mass black holes (IMBHs). Since their discovery is related to the domain of X-ray astrophysics, there have been very few studies made in other wavelengths. This thesis focuses on the multiwavelength nature of Ultra-luminous X-ray sources and intermediate-mass black holes from various aspects, which help to overcome some difficulties we face today. First, I investigated the accretion signatures of a putative intermediate-mass black hole in a particular globular cluster. To this purpose, I characterized the nature of the innermost X-ray sources in the cluster. Then I calculated an upper limit on the mass of the black hole by studying possible accretion efficiencies and rates based on the dedicated X-ray and radio observations. The accreting properties of the source was described with standard spherical accretion and in the context of inefficient accretion. Secondly, I attempted to dynamically measure the mass of the black hole in a particular ULX via optical spectroscopy. I discovered that a certain emission line has a broad component that markedly shifts in wavelength. I investigated the possibility whether this line originates in the accretion disk, and thus might trace the orbital motion of the binary system. I also characterized the parameters of the binary system, such as the mass function, possible orbital separation, the size of the line-emitting region, and an upper limit on the mass of the black hole. Then I studied the environment of a number of ULXs that are associated with large-scale optical and radio nebulae. I

  10. NO EVIDENCE FOR INTERMEDIATE-MASS BLACK HOLES IN GLOBULAR CLUSTERS: STRONG CONSTRAINTS FROM THE JVLA

    International Nuclear Information System (INIS)

    Strader, Jay; Chomiuk, Laura; Maccarone, Thomas J.; Miller-Jones, James C. A.; Seth, Anil C.; Heinke, Craig O.; Sivakoff, Gregory R.

    2012-01-01

    With a goal of searching for accreting intermediate-mass black holes (IMBHs), we report the results of ultra-deep Jansky Very Large Array radio continuum observations of the cores of three Galactic globular clusters: M15, M19, and M22. We reach rms noise levels of 1.5-2.1 μJy beam –1 at an average frequency of 6 GHz. No sources are observed at the center of any of the clusters. For a conservative set of assumptions about the properties of the accretion, we set 3σ upper limits on IMBHs from 360 to 980 M ☉ . These limits are among the most stringent obtained for any globular cluster. They add to a growing body of work that suggests either (1) IMBHs ∼> 1000 M ☉ are rare in globular clusters or (2) when present, IMBHs accrete in an extraordinarily inefficient manner.

  11. No Evidence for Intermediate-mass Black Holes in Globular Clusters: Strong Constraints from the JVLA

    Science.gov (United States)

    Strader, Jay; Chomiuk, Laura; Maccarone, Thomas J.; Miller-Jones, James C. A.; Seth, Anil C.; Heinke, Craig O.; Sivakoff, Gregory R.

    2012-05-01

    With a goal of searching for accreting intermediate-mass black holes (IMBHs), we report the results of ultra-deep Jansky Very Large Array radio continuum observations of the cores of three Galactic globular clusters: M15, M19, and M22. We reach rms noise levels of 1.5-2.1 μJy beam-1 at an average frequency of 6 GHz. No sources are observed at the center of any of the clusters. For a conservative set of assumptions about the properties of the accretion, we set 3σ upper limits on IMBHs from 360 to 980 M ⊙. These limits are among the most stringent obtained for any globular cluster. They add to a growing body of work that suggests either (1) IMBHs >~ 1000 M ⊙ are rare in globular clusters or (2) when present, IMBHs accrete in an extraordinarily inefficient manner.

  12. Observations of Intermediate-mass Black Holes and Ultra-Luminous X-ray sources

    Science.gov (United States)

    Colbert, E. J. M.

    2003-12-01

    I will review various observations that suggest that intermediate-mass black holes (IMBHs) with masses ˜102-104 M⊙ exist in our Universe. I will also discuss some of the limitations of these observations. HST Observations of excess dark mass in globular cluster cores suggest IMBHs may be responsible, and some mass estimates from lensing experiments are nearly in the IMBH range. The intriguing Ultra-Luminous X-ray sources (ULXs, or IXOs) are off-nuclear X-ray point sources with X-ray luminosities LX ≳ 1039 erg s-1. ULXs are typically rare (1 in every 5 galaxies), and the nature of their ultra-luminous emission is currently debated. I will discuss the evidence for IMBHs in some ULXs, and briefly outline some phenomenology. Finally, I will discuss future observations that can be made to search for IMBHs.

  13. Measuring Intermediate-Mass Black-Hole Binaries with Advanced Gravitational Wave Detectors.

    Science.gov (United States)

    Veitch, John; Pürrer, Michael; Mandel, Ilya

    2015-10-02

    We perform a systematic study to explore the accuracy with which the parameters of intermediate-mass black-hole binary systems can be measured from their gravitational wave (GW) signatures using second-generation GW detectors. We make use of the most recent reduced-order models containing inspiral, merger, and ringdown signals of aligned-spin effective-one-body waveforms to significantly speed up the calculations. We explore the phenomenology of the measurement accuracies for binaries with total masses between 50M(⊙) and 500M(⊙) and mass ratios between 0.1 and 1. We find that (i) at total masses below ∼200M(⊙), where the signal-to-noise ratio is dominated by the inspiral portion of the signal, the chirp mass parameter can be accurately measured; (ii) at higher masses, the information content is dominated by the ringdown, and total mass is measured more accurately; (iii) the mass of the lower-mass companion is poorly estimated, especially at high total mass and more extreme mass ratios; and (iv) spin cannot be accurately measured for our injection set with nonspinning components. Most importantly, we find that for binaries with nonspinning components at all values of the mass ratio in the considered range and at a network signal-to-noise ratio of 15, analyzed with spin-aligned templates, the presence of an intermediate-mass black hole with mass >100M(⊙) can be confirmed with 95% confidence in any binary that includes a component with a mass of 130M(⊙) or greater.

  14. Transitional Disks Associated with Intermediate-Mass Stars: Results of the SEEDS YSO Survey

    Science.gov (United States)

    Grady, C.; Fukagawa, M.; Maruta, Y.; Ohta, Y.; Wisniewski, J.; Hashimoto, J.; Okamoto, Y.; Momose, M.; Currie, T.; McElwain, M.; hide

    2014-01-01

    Protoplanetary disks are where planets form, grow, and migrate to produce the diversity of exoplanet systems we observe in mature systems. Disks where this process has advanced to the stage of gap opening, and in some cases central cavity formation, have been termed pre-transitional and transitional disks in the hope that they represent intermediate steps toward planetary system formation. Recent reviews have focussed on disks where the star is of solar or sub-solar mass. In contrast to the sub-millimeter where cleared central cavities predominate, at H-band some T Tauri star transitional disks resemble primordial disks in having no indication of clearing, some show a break in the radial surface brightness profile at the inner edge of the outer disk, while others have partially to fully cleared gaps or central cavities. Recently, the Meeus Group I Herbig stars, intermediate-mass PMS stars with IR spectral energy distributions often interpreted as flared disks, have been proposed to have transitional and pre-transitional disks similar to those associated with solar-mass PMS stars, based on thermal-IR imaging, and sub-millimeter interferometry. We have investigated their appearance in scattered light as part of the Strategic Exploration of Exoplanets and Disks with Subaru (SEEDS), obtaining H-band polarimetric imagery of 10 intermediate-mass stars with Meeus Group I disks. Augmented by other disks with imagery in the literature, the sample is now sufficiently large to explore how these disks are similar to and differ from T Tauri star disks. The disk morphologies seen in the Tauri disks are also found for the intermediate-mass star disks, but additional phenomena are found; a hallmark of these disks is remarkable individuality and diversity which does not simply correlate with disk mass or stellar properties, including age, including spiral arms in remnant envelopes, arms in the disk, asymmetrically and potentially variably shadowed outer disks, gaps, and one disk

  15. Intermediate-mass Higgs boson and isosinglet neutral heavy lepton signals at hadron supercolliders

    International Nuclear Information System (INIS)

    Bhattacharya, G.

    1992-01-01

    The signals for the Standard Model intermediate-mass Higgs boson and isosinglet neutral heavy leptons at the forthcoming hadron supercolliders-the Superconducting Super Collider (SSC) and the CERN Large Hadron Collider (LHC), are studied. The author studies inclusive production of the Standard Model Higgs boson in the intermediate-mass region (M W approx-lt m H approx-lt 2M Z ) and its subsequent decay into two on- or off-shell W bosons that decay leptonically. Backgrounds from continuum W pair production and top quark pair production with semileptonic decays are investigated. The author concludes the Higgs boson signal may be observed via the decay H → W*W* → (ell bar v ell ) (bar ell' v' ell ) at the SSC for 145 GeV H approx-lt 2M Z and at the LHC for 150 GeV H approx-lt 2M Z if m t > 150 GeV. The author analyzes the search and discovery potential of isosinglet neutral heavy leptons (NHLs) produced via real or virtual W decay at pp supercolliders. The author considers the signal resulting from the leptonic decay of the NHL, and the two major backgrounds-continuum WZ, Wγ production and t bar tj production, where j is a hadronic jet. The decay patterns of NHL depend on its mass M N , and different search strategies are needed for the two mass regions M N W and M N > M Z . The author finds for m t ≥ 150 (200) GeV the signal is observable for M N ≤ 60 (70) GeV in the mass-region M N W , and up to M N ≅ 110 GeV for M N > M W , at both SSC and LHC. It is shown the non-observance of the signal (with a 4σ statistical significance) in the region M N W could put upper limits on the NHL coupling constants that would be an improvement over the limits obtainable from the CERN Large Electron Positron Collider (LEP I)

  16. Three ancient halo subgiants: precise parallaxes, compositions, ages, and implications for globular clusters , ,

    Energy Technology Data Exchange (ETDEWEB)

    VandenBerg, Don A. [Department of Physics and Astronomy, University of Victoria, P.O. Box 1700 STN CSC, Victoria, B.C., V8W 2Y2 (Canada); Bond, Howard E. [Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802 (United States); Nelan, Edmund P. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Nissen, P. E. [Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C (Denmark); Schaefer, Gail H. [The CHARA Array of Georgia State University, Mount Wilson Observatory, Mount Wilson, CA 91023 (United States); Harmer, Dianne, E-mail: vandenbe@uvic.ca, E-mail: heb11@psu.edu, E-mail: nelan@stsci.edu, E-mail: pen@phys.au.dk, E-mail: schaefer@chara-array.org, E-mail: diharmer@noao.edu [National Optical Astronomy Observatories, 950 North Cherry Avenue, Tucson, AZ 85726 (United States)

    2014-09-10

    The most accurate ages for the oldest stars are those obtained for nearby halo subgiants because they depend almost entirely on just the measured parallaxes and absolute oxygen abundances. In this study, we have used the Fine Guidance Sensors on the Hubble Space Telescope to determine trigonometric parallaxes, with precisions of 2.1% or better, for the Population II subgiants HD 84937, HD 132475, and HD 140283. High quality spectra have been used to derive their surface abundances of O, Fe, Mg, Si, and Ca, which are assumed to be 0.1-0.15 dex less than their initial abundances due to the effects of diffusion. Comparisons of isochrones with the three subgiants on the (log T {sub eff}, M{sub V} ) diagram yielded ages of 12.08 ± 0.14, 12.56 ± 0.46, and 14.27 ± 0.38 Gyr for HD 84937, HD 132475, and HD 140283, in turn, where each error bar includes only the parallax uncertainty. The total uncertainty is estimated to be ∼ ± 0.8 Gyr (larger in the case of the near-turnoff star HD 84937). Although the age of HD 140283 is greater than the age of the universe as inferred from the cosmic microwave background by ∼0.4-0.5 Gyr, this discrepancy is at a level of <1σ. Nevertheless, the first Population II stars apparently formed very soon after the Big Bang. (Stellar models that neglect diffusive processes seem to be ruled out as they would predict that HD 140283 is ∼1.5 Gyr older than the universe.) The field halo subgiants appear to be older than globular clusters of similar metallicities: if distances close to those implied by the RR Lyrae standard candle are assumed, M 92 and M 5 are younger than HD 140283 and HD 132475 by ∼1.5 and ∼1.0 Gyr, respectively.

  17. Coincidence measurements of intermediate mass fragments produced in /sup 32/S-induced reactions on Ag at E/A = 22.5 MeV

    International Nuclear Information System (INIS)

    Fields, D.J.; Lynch, W.G.; Nayak, T.K.

    1986-01-01

    Single- and two-particle inclusive cross sections for the production of light nuclei and intermediate mass fragments, 3< or =Z< or =24, were measured at angles well beyond the grazing angle for /sup 32/S-induced reactions on Ag at 720 MeV. Information about fragment multiplicities and reaction dynamics was extracted from measurements of light particles, intermediate mass fragments, and targetlike residues in coincidence with intermediate mass fragments. Incomplete linear momentum transfer and non-compound-particle emission are important features of collisions producing intermediate mass fragments. About half of the incident kinetic energy in these collisions is converted into internal excitation. The mean multiplicity of intermediate mass fragments is of the order of 1. Particle correlations are strongly enhanced in the plane which contains the intermediate mass fragment and the beam axis

  18. Correlations of intermediate mass fragments from Fe+Ta, Au, and Th collisions

    International Nuclear Information System (INIS)

    Sangster, T.C.; Begemann-Blaich, M.; Blaich, T.; Britt, H.C.; Hansen, L.F.; Namboodiri, M.N.; Peilert, G.

    1995-01-01

    Charge, velocity, and angular correlations between intermediate mass fragments (IMF) are presented for 50 and 100 MeV/nucleon Fe bombardments of Ta, Au, and Th targets. Correlation functions generated as a function of the relative velocity and the opening angle between two IMF's are qualitatively independent of the projectile energy and target mass and show a suppression at small relative velocities and opening angles due to the Coulomb repulsion between the fragments. The correlations are consistent with IMF's emitted primarily from a highly excited target residue following a rapid preequilibrium cascade. The correlation data are compared to model calculations using the event generator MENEKA and the quantum molecular dynamics (QMD) code with a statistical deexcitation of residual fragments utilizing the multifragmentation code SMM. All data are consistent with a simultaneous multifragmentation at a freeze-out density of 0.1--0.3 times normal nuclear matter density or a more sequential emission with time constant τ≤500 fm/c

  19. A Tidal Disruption Event in a Nearby Galaxy Hosting an Intermediate Mass Black Hole

    Science.gov (United States)

    Donato, D; Cenko, S. B.; Covino, S.; Troja, E.; Pursimo, T.; Cheung, C. C.; Fox, O.; Kutyrev, A.; Campana, S.; Fugazza, D.; hide

    2014-01-01

    We report the serendipitous discovery of a bright point source flare in the Abell cluster A1795 with archival EUVE and Chandra observations. Assuming the EUVE emission is associated with the Chandra source, the X-ray 0.5-7 kiloelectronvolt flux declined by a factor of approximately 2300 over a time span of 6 years, following a power-law decay with index approximately equal to 2.44 plus or minus 0.40. The Chandra data alone vary by a factor of approximately 20. The spectrum is well fit by a blackbody with a constant temperature of kiloteslas approximately equal to 0.09 kiloelectronvolts (approximately equal to 10 (sup 6) Kelvin). The flare is spatially coincident with the nuclear region of a faint, inactive galaxy with a photometric redshift consistent at the 1 sigma level with the cluster (redshift = 0.062476).We argue that these properties are indicative of a tidal disruption of a star by a black hole (BH) with log(M (sub BH) / M (sub 1 solar mass)) approximately equal to 5.5 plus or minus 0.5. If so, such a discovery indicates that tidal disruption flares may be used to probe BHs in the intermediate mass range, which are very difficult to study by other means.

  20. A tidal disruption event in a nearby galaxy hosting an intermediate mass black hole

    Energy Technology Data Exchange (ETDEWEB)

    Donato, D.; Troja, E. [CRESST and Astroparticle Physics Laboratory NASA/GSFC, Greenbelt, MD 20771 (United States); Cenko, S. B.; Fox, O. [Astrophysics Science Division, NASA/GSFC, Mail Code 661, Greenbelt, MD 20771 (United States); Covino, S. [INAF, Osservatorio Astronomico di Brera, via E. Bianchi 46, I-23807 Merate (Italy); Pursimo, T. [Nordic Optical Telescope, Apartado 474, E-38700 Santa Cruz de La Palma (Spain); Cheung, C. C. [Space Science Division, Naval Research Laboratory, Washington, DC 20375-5352 (United States); Kutyrev, A. [Observational Cosmology Laboratory, NASA/GSFC, 8800 Greenbelt Road, Greenbelt, MD 20771-2400 (United States); Campana, S.; Fugazza, D. [Joint Space Science Institute, University of Maryland, College Park, MD 20742 (United States); Landt, H. [Department of Physics, Durham University, South Road, Durham DH1 3LE (United Kingdom); Butler, N. R., E-mail: davide.donato-1@nasa.gov [School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287 (United States)

    2014-02-01

    We report the serendipitous discovery of a bright point source flare in the Abell cluster A1795 with archival EUVE and Chandra observations. Assuming the EUVE emission is associated with the Chandra source, the X-ray 0.5-7 keV flux declined by a factor of ∼2300 over a time span of 6 yr, following a power-law decay with index ∼2.44 ± 0.40. The Chandra data alone vary by a factor of ∼20. The spectrum is well fit by a blackbody with a constant temperature of kT ∼ 0.09 keV (∼10{sup 6} K). The flare is spatially coincident with the nuclear region of a faint, inactive galaxy with a photometric redshift consistent at the 1σ level with the cluster (z = 0.062476). We argue that these properties are indicative of a tidal disruption of a star by a black hole (BH) with log (M {sub BH}/M {sub ☉}) ∼ 5.5 ± 0.5. If so, such a discovery indicates that tidal disruption flares may be used to probe BHs in the intermediate mass range, which are very difficult to study by other means.

  1. A tidal disruption event in a nearby galaxy hosting an intermediate mass black hole

    International Nuclear Information System (INIS)

    Donato, D.; Troja, E.; Cenko, S. B.; Fox, O.; Covino, S.; Pursimo, T.; Cheung, C. C.; Kutyrev, A.; Campana, S.; Fugazza, D.; Landt, H.; Butler, N. R.

    2014-01-01

    We report the serendipitous discovery of a bright point source flare in the Abell cluster A1795 with archival EUVE and Chandra observations. Assuming the EUVE emission is associated with the Chandra source, the X-ray 0.5-7 keV flux declined by a factor of ∼2300 over a time span of 6 yr, following a power-law decay with index ∼2.44 ± 0.40. The Chandra data alone vary by a factor of ∼20. The spectrum is well fit by a blackbody with a constant temperature of kT ∼ 0.09 keV (∼10 6 K). The flare is spatially coincident with the nuclear region of a faint, inactive galaxy with a photometric redshift consistent at the 1σ level with the cluster (z = 0.062476). We argue that these properties are indicative of a tidal disruption of a star by a black hole (BH) with log (M BH /M ☉ ) ∼ 5.5 ± 0.5. If so, such a discovery indicates that tidal disruption flares may be used to probe BHs in the intermediate mass range, which are very difficult to study by other means.

  2. A MULTIPLICITY CENSUS OF INTERMEDIATE-MASS STARS IN SCORPIUS-CENTAURUS

    International Nuclear Information System (INIS)

    Janson, Markus; Lafrenière, David; Jayawardhana, Ray; Bonavita, Mariangela; Girard, Julien H.; Brandeker, Alexis; Gizis, John E.

    2013-01-01

    Stellar multiplicity properties have been studied for the lowest and the highest stellar masses, but intermediate-mass stars from F-type to late A-type have received relatively little attention. Here, we report on a Gemini/NICI snapshot imaging survey of 138 such stars in the young Scorpius-Centaurus (Sco-Cen) region, for the purpose of studying multiplicity with sensitivity down to planetary masses at wide separations. In addition to two brown dwarfs and a companion straddling the hydrogen-burning limit which we reported previously, here we present 26 new stellar companions and determine a multiplicity fraction within 0.''1-5.''0 of 21% ± 4%. Depending on the adopted semimajor axis distribution, our results imply a total multiplicity in the range of ∼60%-80%, which further supports the known trend of a smooth continuous increase in the multiplicity fraction as a function of primary stellar mass. A surprising feature in the sample is a distinct lack of nearly equal-mass binaries, for which we discuss possible reasons. The survey yielded no additional companions below or near the deuterium-burning limit, implying that their frequency at >200 AU separations is not quite as high as might be inferred from previous detections of such objects within the Sco-Cen region

  3. Prompt emission from tidal disruptions of white dwarfs by intermediate mass black holes

    Directory of Open Access Journals (Sweden)

    Laguna P.

    2012-12-01

    Full Text Available We present a qualitative picture of prompt emission from tidal disruptions of white dwarfs (WD by intermediate mass black holes (IMBH. The smaller size of an IMBH compared to a supermassive black hole and a smaller tidal radius of a WD disruption lead to a very fast event with high peak luminosity. Magnetic field is generated in situ following the tidal disruption, which leads to effective accretion. Since large-scale magnetic field is also produced, geometrically thick super-Eddington inflow leads to a relativistic jet. The dense jet possesses a photosphere, which emits quasi-thermal radiation in soft X-rays. The source can be classified as a long low-luminosity gamma-ray burst (ll-GRB. Tidal compression of a WD causes nuclear ignition, which is observable as an accompanying supernova. We suggest that GRB060218 and SN2006aj is such a pair of ll-GRB and supernova. We argue that in a flux-limited sample the disruptions of WDs by IMBHs are more frequent then the disruptions of other stars by IMBHs.

  4. Ab initio results for intermediate-mass, open-shell nuclei

    Science.gov (United States)

    Baker, Robert B.; Dytrych, Tomas; Launey, Kristina D.; Draayer, Jerry P.

    2017-01-01

    A theoretical understanding of nuclei in the intermediate-mass region is vital to astrophysical models, especially for nucleosynthesis. Here, we employ the ab initio symmetry-adapted no-core shell model (SA-NCSM) in an effort to push first-principle calculations across the sd-shell region. The ab initio SA-NCSM's advantages come from its ability to control the growth of model spaces by including only physically relevant subspaces, which allows us to explore ultra-large model spaces beyond the reach of other methods. We report on calculations for 19Ne and 20Ne up through 13 harmonic oscillator shells using realistic interactions and discuss the underlying structure as well as implications for various astrophysical reactions. This work was supported by the U.S. NSF (OCI-0904874 and ACI -1516338) and the U.S. DOE (DE-SC0005248), and also benefitted from the Blue Waters sustained-petascale computing project and high performance computing resources provided by LSU.

  5. Characterizing Intermediate-Mass, Pre-Main-Sequence Stars via X-Ray Emision

    Science.gov (United States)

    Haze Nunez, Evan; Povich, Matthew Samuel; Binder, Breanna Arlene; Broos, Patrick; Townsley, Leisa K.

    2018-01-01

    The X-ray emission from intermediate-mass, pre-main-sequence stars (IMPS) can provide useful constraints on the ages of very young (${getting power from the gravitational contraction of the star. Main-sequence late-B and A-type stars are not expected to be strong X-ray emitters, because they lack the both strong winds of more massive stars and the magneto-coronal activity of lower-mass stars. There is, however, mounting evidence that IMPS are powerful intrinsic x-ray emitters during their convection-dominated early evolution, before the development and rapid growth of a radiation zone. We present our prime candidates for intrinsic, coronal X-ray emission from IMPS identified in the Chandra Carina Complex Project. The Carina massive star-forming complex is of special interest due to the wide variation of star formation stages within the region. Candidate IMPS were identified using infrared spectral energy distribution (SED) models. X-ray properties, including thermal plasma temperatures and absorption-corrected fluxes, were derived from XSPEC fits performed using absorption ($N_{H}$) constrained by the extinction values returned by the infrared SED fits. We find that IMPS have systematically higher X-ray luminosities compared to their lower-mass cousins, the TTauri stars.This work is supported by the National Science Foundation under grant CAREER-1454334 and by NASA through Chandra Award 18200040.

  6. A PRECISE MASS MEASUREMENT OF THE INTERMEDIATE-MASS BINARY PULSAR PSR J1802 - 2124

    International Nuclear Information System (INIS)

    Ferdman, R. D.; Cognard, I.; Desvignes, G.; Theureau, G.; Stairs, I. H.; Kramer, M.; McLaughlin, M. A.; Lorimer, D. R.; Nice, D. J.; Manchester, R. N.; Hobbs, G.; Lyne, A. G.; Faulkner, A.; Camilo, F.; Possenti, A.; Demorest, P. B.; Backer, D. C.

    2010-01-01

    PSR J1802 - 2124 is a 12.6 ms pulsar in a 16.8 hr binary orbit with a relatively massive white dwarf (WD) companion. These properties make it a member of the intermediate-mass class of binary pulsar (IMBP) systems. We have been timing this pulsar since its discovery in 2002. Concentrated observations at the Green Bank Telescope, augmented with data from the Parkes and Nancay observatories, have allowed us to determine the general relativistic Shapiro delay. This has yielded pulsar and WD mass measurements of 1.24 ± 0.11 M sun and 0.78 ± 0.04 M sun (68% confidence), respectively. The low mass of the pulsar, the high mass of the WD companion, the short orbital period, and the pulsar spin period may be explained by the system having gone through a common-envelope phase in its evolution. We argue that selection effects may contribute to the relatively small number of known IMBPs.

  7. Evolving ONe WD+He star systems to intermediate-mass binary pulsars

    Science.gov (United States)

    Liu, D.; Wang, B.; Chen, W.; Zuo, Z.; Han, Z.

    2018-06-01

    It has been suggested that accretion-induced collapse (AIC) is a non-negligible path for the formation of the observed neutron stars (NSs). An ONe white dwarf (WD) that accretes material from a He star may experience AIC process and eventually produce intermediate-mass binary pulsars (IMBPs), named as the ONe WD+He star scenario. Note that previous studies can only account for part of the observed IMBPs with short orbital periods. In this work, we investigate the evolution of about 900 ONe WD+He star binaries to explore the distribution of IMBPs. We found that the ONe WD+He star scenario could form IMBPs including pulsars with 5-340 ms spin periods and 0.75-1.38 M_{⊙} WD companions, in which the orbital periods range from 0.04 to 900 d. Compared with the 20 observed IMBPs, this scenario can cover the parameters of 13 sources in the final orbital period-WD mass plane and the Corbet diagram, most of which have short orbital periods. We found that the ONe WD+He star scenario can explain almost all the observed IMBPs with short orbital periods. This work can well match the observed parameters of PSR J1802-2124 (one of the two precisely observed IMBPs), providing a possible evolutional path for its formation. We also speculate that the compact companion of HD 49798 (a hydrogen depleted sdO6 star) may be not a NS based on this work.

  8. Liquid-vapor phase transition, collective flow and entropy determination from future measurements of intermediate mass fragments

    International Nuclear Information System (INIS)

    Coffin, J.P.

    1991-01-01

    Some global variables reflecting the highly collective character of nuclear matter produced in relativistic heavy-ion collisions are briefly reviewed on the basis of presently available experimental results and of Quantum Statistical Model and Quantum Molecular Dynamic Model predictions relative to intermediate mass fragments. Possible future measurements are suggested. (author) 27 refs., 8 figs

  9. A population of relic intermediate-mass black holes in the halo of the Milky Way

    International Nuclear Information System (INIS)

    Rashkov, Valery; Madau, Piero

    2014-01-01

    If 'seed' central black holes were common in the subgalactic building blocks that merged to form present-day massive galaxies, then relic intermediate-mass black holes (IMBHs) should be present in the Galactic bulge and halo. We use a particle tagging technique to dynamically populate the N-body Via Lactea II high-resolution simulation with black holes, and assess the size, properties, and detectability of the leftover population. The method assigns a black hole to the most tightly bound central particle of each subhalo at infall according to an extrapolation of the M BH -σ * relation, and self-consistently follows the accretion and disruption of Milky Way progenitor dwarfs and their holes in a cosmological 'live' host from high redshift to today. We show that, depending on the minimum stellar velocity dispersion, σ m , below which central black holes are assumed to be increasingly rare, as many as ∼2000 (σ m = 3 km s –1 ) or as few as ∼70 (σ m = 12 km s –1 ) IMBHs may be left wandering in the halo of the Milky Way today. The fraction of IMBHs forced from their hosts by gravitational recoil is ≲ 20%. We identify two main Galactic subpopulations, 'naked' IMBHs, whose host subhalos were totally destroyed after infall, and 'clothed' IMBHs residing in dark matter satellites that survived tidal stripping. Naked IMBHs typically constitute 40%-50% of the total and are more centrally concentrated. We show that, in the σ m = 12 km s –1 scenario, the clusters of tightly bound stars that should accompany naked IMBHs would be fainter than m V = 16 mag, spatially resolvable, and have proper motions of 0.1-10 mas yr –1 . Their detection may provide an observational tool to constrain the formation history of massive black holes in the early universe.

  10. Jetted tidal disruptions of stars as a flag of intermediate mass black holes at high redshifts

    Science.gov (United States)

    Fialkov, Anastasia; Loeb, Abraham

    2017-11-01

    Tidal disruption events (TDEs) of stars by single or binary supermassive black holes (SMBHs) brighten galactic nuclei and reveal a population of otherwise dormant black holes. Adopting event rates from the literature, we aim to establish general trends in the redshift evolution of the TDE number counts and their observable signals. We pay particular attention to (I) jetted TDEs whose luminosity is boosted by relativistic beaming and (II) TDEs around binary black holes. We show that the brightest (jetted) TDEs are expected to be produced by massive black hole binaries if the occupancy of intermediate mass black holes (IMBHs) in low-mass galaxies is high. The same binary population will also provide gravitational wave sources for the evolved Laser Interferometer Space Antenna. In addition, we find that the shape of the X-ray luminosity function of TDEs strongly depends on the occupancy of IMBHs and could be used to constrain scenarios of SMBH formation. Finally, we make predictions for the expected number of TDEs observed by future X-ray telescopes finding that a 50 times more sensitive instrument than the Burst Alert Telescope (BAT) on board the Swift satellite is expected to trigger ˜10 times more events than BAT, while 6-20 TDEs are expected in each deep field observed by a telescope 50 times more sensitive than the Chandra X-ray Observatory if the occupation fraction of IMBHs is high. Because of their long decay times, high-redshift TDEs can be mistaken for fixed point sources in deep field surveys and targeted observations of the same deep field with year-long intervals could reveal TDEs.

  11. INTERMEDIATE-MASS HOT CORES AT {approx}500 AU: DISKS OR OUTFLOWS?

    Energy Technology Data Exchange (ETDEWEB)

    Palau, Aina; Girart, Josep M. [Institut de Ciencies de l' Espai (CSIC-IEEC), Campus UAB-Facultat de Ciencies, Torre C5-parell 2, 08193 Bellaterra, Catalunya (Spain); Fuente, Asuncion; Alonso-Albi, Tomas [Observatorio Astronomico Nacional, P.O. Box 112, 28803 Alcala de Henares, Madrid (Spain); Fontani, Francesco; Sanchez-Monge, Alvaro [Osservatorio Astrofisico di Arcetri, INAF, Largo E. Fermi 5, 50125 Firenze (Italy); Boissier, Jeremie [Istituto di Radioastronomia, INAF, Via Gobetti 101, Bologna (Italy); Pietu, Vincent; Neri, Roberto [IRAM, 300 Rue de la piscine, 38406 Saint Martin d' Heres (France); Busquet, Gemma [Istituto di Fisica dello Spazio Interplanetario, INAF, Area di Recerca di Tor Vergata, Via Fosso Cavaliere 100, 00133 Roma (Italy); Estalella, Robert [Departament d' Astronomia i Meteorologia (IEEC-UB), Institut Ciencies Cosmos, Universitat Barcelona, Marti Franques 1, 08028 Barcelona (Spain); Zapata, Luis A. [Centro de Radioastronomia y Astrofisica, Universidad Nacional Autonoma de Mexico, P.O. Box 3-72, 58090 Morelia, Michoacan (Mexico); Zhang, Qizhou; Ho, Paul T. P. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Audard, Marc, E-mail: palau@ieec.uab.es [Geneva Observatory, University of Geneva, Ch. des Maillettes 51, 1290 Versoix (Switzerland)

    2011-12-20

    Observations with the Plateau de Bure Interferometer in the most extended configuration toward two intermediate-mass star-forming regions, IRAS 22198+6336 and AFGL 5142, reveal the presence of several complex organic molecules at {approx}500 AU scales, confirming the presence of hot cores in both regions. The hot cores are not rich in CN-bearing molecules, as often seen in massive hot cores, and are mainly traced by CH{sub 3}CH{sub 2}OH, (CH{sub 2}OH){sub 2}, CH{sub 3}COCH{sub 3}, and CH{sub 3}OH, with, additionally, CH{sub 3}CHO, CH{sub 3}OD, and HCOOD for IRAS 22198+6336, and C{sub 6}H and O{sup 13}CS for AFGL 5142. The emission of complex molecules is resolved down to sizes of {approx}300 and {approx}600 AU, for IRAS 22198+6336 and AFGL 5142, respectively, and most likely is tracing protostellar disks rather than flattened envelopes or toroids as is usually found. This is especially clear for the case of IRAS 22198+6336, where we detect a velocity gradient for all the mapped molecules perpendicular to the most chemically rich outflow of the region, yielding a dynamic mass {approx}> 4 M{sub Sun }. As for AFGL 5142, the hot core emission is resolved into two elongated cores separated {approx}1800 AU. A detailed comparison of the complex molecule peaks to the new CO (2-1) data and H{sub 2}O maser data from the literature suggests also that for AFGL 5142 the complex molecules are mainly associated with disks, except for a faint and extended molecular emission found to the west, which is possibly produced in the interface between one of the outflows and the dense surrounding gas.

  12. Gravitational Waves and Intermediate-mass Black Hole Retention in Globular Clusters

    Science.gov (United States)

    Fragione, Giacomo; Ginsburg, Idan; Kocsis, Bence

    2018-04-01

    The recent discovery of gravitational waves (GWs) has opened new horizons for physics. Current and upcoming missions, such as LIGO, VIRGO, KAGRA, and LISA, promise to shed light on black holes of every size from stellar mass (SBH) sizes up to supermassive black holes. The intermediate-mass black hole (IMBH) family has not been detected beyond any reasonable doubt. Recent analyses suggest observational evidence for the presence of IMBHs in the centers of two Galactic globular clusters (GCs). In this paper, we investigate the possibility that GCs were born with a central IMBH, which undergoes repeated merger events with SBHs in the cluster core. By means of a semi-analytical method, we follow the evolution of the primordial cluster population in the galactic potential and the mergers of the binary IMBH-SBH systems. Our models predict ≈1000 IMBHs within 1 kpc from the galactic center and show that the IMBH-SBH merger rate density changes from { \\mathcal R }≈ 1000 Gpc‑3 yr‑1 beyond z ≈ 2 to { \\mathcal R }≈ 1{--}10 Gpc‑3 yr‑1 at z ≈ 0. The rates at low redshifts may be significantly higher if young massive star clusters host IMBHs. The merger rates are dominated by IMBHs with masses between 103 and 104 M ⊙. Currently, there are no LIGO/VIRGO upper limits for GW sources in this mass range, but our results show that at design sensitivity, these instruments will detect IMBH-SBH mergers in the coming years. LISA and the Einstein Telescope will be best suited to detect these events. The inspirals of IMBH-SBH systems may also generate an unresolved GW background.

  13. INTERMEDIATE-MASS HOT CORES AT ∼500 AU: DISKS OR OUTFLOWS?

    International Nuclear Information System (INIS)

    Palau, Aina; Girart, Josep M.; Fuente, Asunción; Alonso-Albi, Tomás; Fontani, Francesco; Sánchez-Monge, Álvaro; Boissier, Jérémie; Piétu, Vincent; Neri, Roberto; Busquet, Gemma; Estalella, Robert; Zapata, Luis A.; Zhang, Qizhou; Ho, Paul T. P.; Audard, Marc

    2011-01-01

    Observations with the Plateau de Bure Interferometer in the most extended configuration toward two intermediate-mass star-forming regions, IRAS 22198+6336 and AFGL 5142, reveal the presence of several complex organic molecules at ∼500 AU scales, confirming the presence of hot cores in both regions. The hot cores are not rich in CN-bearing molecules, as often seen in massive hot cores, and are mainly traced by CH 3 CH 2 OH, (CH 2 OH) 2 , CH 3 COCH 3 , and CH 3 OH, with, additionally, CH 3 CHO, CH 3 OD, and HCOOD for IRAS 22198+6336, and C 6 H and O 13 CS for AFGL 5142. The emission of complex molecules is resolved down to sizes of ∼300 and ∼600 AU, for IRAS 22198+6336 and AFGL 5142, respectively, and most likely is tracing protostellar disks rather than flattened envelopes or toroids as is usually found. This is especially clear for the case of IRAS 22198+6336, where we detect a velocity gradient for all the mapped molecules perpendicular to the most chemically rich outflow of the region, yielding a dynamic mass ∼> 4 M ☉ . As for AFGL 5142, the hot core emission is resolved into two elongated cores separated ∼1800 AU. A detailed comparison of the complex molecule peaks to the new CO (2-1) data and H 2 O maser data from the literature suggests also that for AFGL 5142 the complex molecules are mainly associated with disks, except for a faint and extended molecular emission found to the west, which is possibly produced in the interface between one of the outflows and the dense surrounding gas.

  14. X-Ray Emission from Active Galactic Nuclei with Intermediate-Mass Black Holes

    Science.gov (United States)

    Dewangan, G. C.; Mathur, S.; Griffiths, R. E.; Rao, A. R.

    2008-12-01

    We present a systematic X-ray study of eight active galactic nuclei (AGNs) with intermediate-mass black holes (MBH ~ 8-95 × 104 M⊙) based on 12 XMM-Newton observations. The sample includes the two prototype AGNs in this class—NGC 4395 and POX 52 and six other AGNs discovered with the Sloan Digitized Sky Survey. These AGNs show some of the strongest X-ray variability, with the normalized excess variances being the largest and the power density break timescales being the shortest observed among radio-quiet AGNs. The excess-variance-luminosity correlation appears to depend on both the BH mass and the Eddington luminosity ratio. The break timescale-black hole mass relations for AGN with IMBHs are consistent with that observed for massive AGNs. We find that the FWHM of the Hβ/Hα line is uncorrelated with the BH mass, but shows strong anticorrelation with the Eddington luminosity ratio. Four AGNs show clear evidence for soft X-ray excess emission (kTin ~ 150-200 eV). X-ray spectra of three other AGNs are consistent with the presence of the soft excess emission. NGC 4395 with lowest L/LEdd lacks the soft excess emission. Evidently small black mass is not the primary driver of strong soft X-ray excess emission from AGNs. The X-ray spectral properties and optical-to-X-ray spectral energy distributions of these AGNs are similar to those of Seyfert 1 galaxies. The observed X-ray/UV properties of AGNs with IMBHs are consistent with these AGNs being low-mass extensions of more massive AGNs, those with high Eddington luminosity ratio looking more like narrow-line Seyfert 1 s and those with low L/LEdd looking more like broad-line Seyfert 1 galaxies.

  15. Protoplanetary disks around intermediate-mass stars: the asset of imaging in the mid-infrared

    International Nuclear Information System (INIS)

    Doucet, Coralie

    2006-01-01

    The accrued efficiency of the instruments in many wavelengths has allowed to show that most young stellar objects were surrounded by circumstellar matter distributed in a disk. Direct imaging of such systems is very difficult because of their narrow angular size and their weak luminosity in comparison with the star. Nowadays, 50 % of low-mass pre-main sequence stars, i.e. T Tauri stars, are surrounded by a disk. This proportion is less obvious for intermediate-mass stars, like Herbig Ae stars, that are less numerous and whose direct disk detection is more difficult. Until now, only the interpretation of the Spectral Energy Distribution (SED) of such objects allows to have access to the geometry of the disk. But the solutions are degenerated and several parameters fit the same SED. It is essential to have direct images of the objects, the only evidence of the presence of disks. This PhD allows to show that mid-infrared imaging could rise a part of the degeneracy of the disk's parameters linked to the fit of the SED for several objects and gives constraints on the minimum external radius and inclination of the disk. We present a new observation mode with VISIR, the mid-infrared imager and spectrometer on the VLT (ESO, Chile): the so-called BURST mode. This mode allows to reach the diffraction limit of the telescope. Thanks to mid-infrared imaging with this instrument, we were able, for the first time, to have access to the geometry of a disk (flared structure) around a massive star that was, until now, only deduced from the SED modelling. (author) [fr

  16. Limits on runaway growth of intermediate mass black holes from advanced LIGO

    Science.gov (United States)

    Kovetz, Ely D.; Cholis, Ilias; Kamionkowski, Marc; Silk, Joseph

    2018-06-01

    There is growing evidence that intermediate-mass black holes (IMBHs), defined here as having a mass in the range M =500 -105 M⊙ , are present in the dense centers of certain globular clusters (GCs). Gravitational waves from their mergers with other IMBHs or with stellar BHs in the cluster are mostly emitted in frequencies ≲10 Hz , which unfortunately is out of reach for current ground-based observatories such as advanced LIGO (aLIGO). Nevertheless, we show that aLIGO measurements can be used to efficiently probe one of the possible formation mechanisms of IMBHs in GCs, namely a runaway merger process of stellar seed BHs. In this case, aLIGO will be sensitive to the lower-mass rungs of the merger ladder, ranging from the seed BH mass to masses ≳50 - 300 M⊙ , where the background from standard mergers is expected to be very low. Assuming this generic IMBH formation scenario, we calculate the mass functions that correspond to the limiting cases of possible merger trees. Based on estimates for the number density of GCs and taking into account the instrumental sensitivity, we show that current observations do not effectively limit the occupation fraction focc of IMBHs formed by runaway mergers of stellar BHs in GCs. However, we find that if runaway mergers occur steadily throughout the lifetimes of GCs (as opposed to happening mainly early in their lifetimes), then a six-year run of aLIGO at design sensitivity will be able to probe down to focc≲3 % at a 99.9% confidence level, either finding evidence for this formation mechanism, or necessitating others if the fraction of GCs that harbor IMBHs is higher.

  17. EVIDENCE FOR AN INTERMEDIATE-MASS BLACK HOLE IN NGC 5408 X-1

    International Nuclear Information System (INIS)

    Strohmayer, Tod E.; Mushotzky, Richard F.

    2009-01-01

    We report the discovery with XMM-Newton of correlated spectral and timing behavior in the ultraluminous X-ray source (ULX) NGC 5408 X-1. An ∼100 ks pointing with XMM/Newton obtained in 2008 January reveals a strong 10 mHz quasi-periodic oscillation (QPO) in the >1 keV flux, as well as flat-topped, band-limited noise breaking to a power law. The energy spectrum is again dominated by two components, a 0.16 keV thermal disk and a power law with an index of ∼2.5. These new measurements, combined with results from our previous 2006 January pointing in which we first detected QPOs, show for the first time in a ULX a pattern of spectral and temporal correlations strongly analogous to that seen in Galactic black hole (BH) sources, but at much higher X-ray luminosity and longer characteristic timescales. We find that the QPO frequency is proportional to the inferred disk flux, while the QPO and broadband noise amplitude (rms) are inversely proportional to the disk flux. Assuming that QPO frequency scales inversely with the BH mass at a given power-law spectral index we derive mass estimates using the observed QPO frequency-spectral index relations from five stellar-mass BH systems with dynamical mass constraints. The results from all sources are consistent with a mass range for NGC 5408 X-1 from 1000 to 9000 M sun . We argue that these are conservative limits, and a more likely range is from 2000 to 5000 M sun . Moreover, the recent relation from Gierlinski et al. that relates the BH mass to the strength of variability at high frequencies (above the break in the power spectrum) is also indicative of such a high mass for NGC 5408 X-1. Importantly, none of the above estimates appears consistent with a BH mass less than ∼1000 M sun for NGC 5408 X-1. We argue that these new findings strongly support the conclusion that NGC 5408 X-1 harbors an intermediate-mass BH.

  18. Search for gravitational wave ringdowns from perturbed intermediate mass black holes in LIGO-Virgo data from 2005-2010

    OpenAIRE

    Aasi, J.; Abbott, B.; Abbott, R.; Abbott, T.; Abernathy, M.; Acernese, F.; Ackley, K.; Adams, C.; Adams, T.; Addesso, P.; Adhikari, R.; Affeldt, C.; Agathos, M.; Aggarwal, N.; Aguiar, O.

    2014-01-01

    We report results from a search for gravitational waves produced by perturbed intermediate mass black holes (IMBH) in data collected by LIGO and Virgo between 2005 and 2010. The search was sensitive to astrophysical sources that produced damped sinusoid gravitational wave signals, also known as ringdowns, with frequency $50\\le f_{0}/\\mathrm{Hz} \\le 2000$ and decay timescale $0.0001\\lesssim \\tau/\\mathrm{s} \\lesssim 0.1$ characteristic of those produced in mergers of IMBH pairs. No significant ...

  19. Testing Asteroseismic Radii of Dwarfs and Subgiants with Kepler and Gaia

    DEFF Research Database (Denmark)

    Sahlholdt, C. L.; Silva Aguirre, V.; Casagrande, L.

    2018-01-01

    We test asteroseismic radii of Kepler main-sequence and subgiant stars by deriving their parallaxes which are compared with those of the first Gaia data release. We compute radii based on the asteroseismic scaling relations as well as by fitting observed oscillation frequencies to stellar models...... overestimate radii and masses at high temperatures, and that they are accurate to within 5% in radius and 13% in mass for main-sequence stars with temperatures below 6400 K. However, further analysis is required to test the validity of the corrections on a star-by-star basis and for more evolved stars....

  20. VizieR Online Data Catalog: Abundances in dwarfs, subgiants, and giants (da Silva+, 2015)

    Science.gov (United States)

    da Silva, R.; Milone, A. C.; Rocha-Pinto, H. J.

    2015-05-01

    Photospheric parameters mass, age, and the abundances of C, N, O, Na, Mg, Si, Ca, Ti, V, Mn, Fe, Ni, Cu, and Ba for a sample of FGK dwarfs, subgiants, and giants are derived. We used spectra of high-resolution (R~42,000) and high S/N (>150 on average) available in the ELODIE online database (Moultaka et al., 2004PASP..116..693M). These are spectra collected with the ELODIE high-resolution spectrograph (Baranne et al. 1996) of the Haute Provence Observatory (France). Only spectra with individual S/N>20 and with an image type classified as "object fibre only" (OBJO) were used. (7 data files).

  1. Muriithi, IM

    African Journals Online (AJOL)

    Muriithi, IM. Vol 8, No 2 (2014) - Articles Correlation of magnetic resonance imaging findings with arthroscopy in the evaluation of rotator cuff pathology. Abstract PDF · Vol 8, No 2 (2014) - Articles Patterns of knee, hip and hand osteoarthritis in Kenyatta National Hospital Abstract PDF. ISSN: 1994-1072. AJOL African ...

  2. Quick scan IMS vendors

    NARCIS (Netherlands)

    Norp, A.H.J.; Pals, H.; Walraven, F.A.

    2007-01-01

    IMS is gaining momentum in the market. First operators are deploying IMS, while other operators are considering buying IMS. Operators have two approaches for introducing IMS and building an IMS eco-system: • Buying IMS from a large vendor or system integrator. Vendors like Alcatel-Lucent, Ericsson

  3. Theoretical study of intermediate-mass fragments in proton-nucleus reactions at 200 MeV

    Energy Technology Data Exchange (ETDEWEB)

    Sabra, Mohammad S. [NASA Marshall Space Flight Center, USRA Space Science Department, Huntsville, AL (United States)

    2017-03-15

    We have analyzed energy spectra, angular distributions, and mass and charge distributions of intermediate-mass fragments (IMFs) from the interaction of {sup 27}Al, {sup 59}Co, and {sup 197}Au with 200 MeV protons. Calculations within the modified statistical model with final-state interaction were performed using SAPTON code. Within the experimental uncertainty and constraint, SAPTON shows good agreement with the data, and suggests that the IMFs are produced after the intra-nuclear cascade stage, and during the surface coalescence, as well as the evaporation/fission stages. (orig.)

  4. Interferometric diameters of five evolved intermediate-mass planet-hosting stars measured with PAVO at the CHARA Array

    Science.gov (United States)

    White, T. R.; Huber, D.; Mann, A. W.; Casagrande, L.; Grunblatt, S. K.; Justesen, A. B.; Silva Aguirre, V.; Bedding, T. R.; Ireland, M. J.; Schaefer, G. H.; Tuthill, P. G.

    2018-04-01

    Debate over the planet occurrence rates around intermediate-mass stars has hinged on the accurate determination of masses of evolved stars, and has been exacerbated by a paucity of reliable, directly-measured fundamental properties for these stars. We present long-baseline optical interferometry of five evolved intermediate-mass (˜ 1.5 M⊙) planet-hosting stars using the PAVO beam combiner at the CHARA Array, which we combine with bolometric flux measurements and parallaxes to determine their radii and effective temperatures. We measured the radii and effective temperatures of 6 Lyncis (5.12±0.16 R⊙, 4949±58 K), 24 Sextantis (5.49±0.18 R⊙, 4908±65 K), κ Coronae Borealis (4.77±0.07 R⊙, 4870±47 K), HR 6817 (4.45±0.08 R⊙, 5013±59 K), and HR 8641 (4.91±0.12 R⊙, 4950±68 K). We find disagreements of typically 15 % in angular diameter and ˜ 200 K in temperature compared to interferometric measurements in the literature, yet good agreement with spectroscopic and photometric temperatures, concluding that the previous interferometric measurements may have been affected by systematic errors exceeding their formal uncertainties. Modelling based on BaSTI isochrones using various sets of asteroseismic, spectroscopic, and interferometric constraints tends to favour slightly (˜ 15 %) lower masses than generally reported in the literature.

  5. Radio Observations of Ultra-Luminous X-Ray Sources ---Microblazars or Intermediate-Mass Black Holes?---

    Science.gov (United States)

    Körding, E.; Colbert, E.; Falcke, H.

    In recent years Ultra-Luminous X-Ray sources (ULXs) received wide attention, however, their true nature is not yet understood. Many explanations have been suggested, including intermediate-mass black holes, super-Eddington accretion flows, anisotropic emission, and relativistic beaming of microquasars. We model the logN-logS distribution of ULXs assuming that each neutron star or black hole XRB can be described by an accretion disk plus jet model, where the jet is relativistically beamed. The distribution can be either fit by intermediate-mass black holes or by stellar mass black holes with mildly relativistic jets. Even though the jet is intrinsically weaker than the accretion disk, relativistic beaming can in the latter approach lead to the high fluxes observed. To further explore the possibility of microblazars contributing to the ULX phenomenon, we have embarked on a radio-monitoring study of ULXs in nearby galaxies with the VLA. However, up to now no radio flare has been detected. Using the radio/X-ray correlation the upper limits on the radio flux can be converted into upper limits for the black hole masses of MBH ≲ 10^3 M⊙.

  6. Fission of intermediate mass nuclei by bremsstrahlung photons in the energy range 0.8-1.8 GeV

    International Nuclear Information System (INIS)

    Lima, D.A. de.

    1983-01-01

    The fission of intermediate mass nuclei in the Al-Ta internal induced by bremsstrahlung photons of maximum energies between 0,8 to 1,8 GeV is studied. Thin targets of Nd and Sm and dense targets of Al,Ti,Co,Zr,Nb,Ag,In and Ta are utilized, and all the aspects related with the fission fragment absorption by the targets themselves are considered. The samples are exposed in th 2,5 GeV Electron Synchrotron at Bonn University. Muscovite mica, CR-39 and makrofol are used as fission fragments detectors. Fission cross sections and nuclear fissionabilities of the studied elements are estimated. (L.C.) [pt

  7. A luminous X-ray outburst from an intermediate-mass black hole in an off-centre star cluster

    Science.gov (United States)

    Lin, Dacheng; Strader, Jay; Carrasco, Eleazar R.; Page, Dany; Romanowsky, Aaron J.; Homan, Jeroen; Irwin, Jimmy A.; Remillard, Ronald A.; Godet, Olivier; Webb, Natalie A.; Baumgardt, Holger; Wijnands, Rudy; Barret, Didier; Duc, Pierre-Alain; Brodie, Jean P.; Gwyn, Stephen D. J.

    2018-06-01

    A unique signature for the presence of massive black holes in very dense stellar regions is occasional giant-amplitude outbursts of multi-wavelength radiation from tidal disruption and subsequent accretion of stars that make a close approach to the black holes1. Previous strong tidal disruption event (TDE) candidates were all associated with the centres of largely isolated galaxies2-6. Here, we report the discovery of a luminous X-ray outburst from a massive star cluster at a projected distance of 12.5 kpc from the centre of a large lenticular galaxy. The luminosity peaked at 1043 erg s-1 and decayed systematically over 10 years, approximately following a trend that supports the identification of the event as a TDE. The X-ray spectra were all very soft, with emission confined to be ≲3.0 keV, and could be described with a standard thermal disk. The disk cooled significantly as the luminosity decreased—a key thermal-state signature often observed in accreting stellar-mass black holes. This thermal-state signature, coupled with very high luminosities, ultrasoft X-ray spectra and the characteristic power-law evolution of the light curve, provides strong evidence that the source contains an intermediate-mass black hole with a mass tens of thousand times that of the solar mass. This event demonstrates that one of the most effective means of detecting intermediate-mass black holes is through X-ray flares from TDEs in star clusters.

  8. Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. Detailed abundance analysis of OGLE-2008-BLG-209S

    OpenAIRE

    Bensby, T.; Johnson, J. A.; Cohen, J.; Feltzing, S.; Udalski, A.; Gould, A.; Huang, W.; Thompson, I.; Simmerer, J.; Adén, D.

    2009-01-01

    AIMS. Our aims are twofold. First we aim to evaluate the robustness and accuracy of stellar parameters and detailed elemental abundances that can be derived from high-resolution spectroscopic observations of microlensed dwarf and subgiant stars. We then aim to use microlensed dwarf and subgiant stars to investigate the abundance structure and chemical evolution of the Milky Way Bulge. [ABRIDGED] METHODS. We present a detailed elemental abundance analysis of OGLE-2008-BLG-209S, the source star...

  9. Testing asteroseismic radii of dwarfs and subgiants with Kepler and Gaia

    Science.gov (United States)

    Sahlholdt, C. L.; Silva Aguirre, V.; Casagrande, L.; Mosumgaard, J. R.; Bojsen-Hansen, M.

    2018-05-01

    We test asteroseismic radii of Kepler main-sequence and subgiant stars by deriving their parallaxes which are compared with those of the first Gaia data release. We compute radii based on the asteroseismic scaling relations as well as by fitting observed oscillation frequencies to stellar models for a subset of the sample, and test the impact of using effective temperatures from either spectroscopy or the infrared flux method. An offset of 3 per cent, showing no dependency on any stellar parameters, is found between seismic parallaxes derived from frequency modelling and those from Gaia. For parallaxes based on radii from the scaling relations, a smaller offset is found on average; however, the offset becomes temperature dependent which we interpret as problems with the scaling relations at high stellar temperatures. Using the hotter infrared flux method temperature scale, there is no indication that radii from the scaling relations are inaccurate by more than about 5 per cent. Taking the radii and masses from the modelling of individual frequencies as reference values, we seek to correct the scaling relations for the observed temperature trend. This analysis indicates that the scaling relations systematically overestimate radii and masses at high temperatures, and that they are accurate to within 5 per cent in radius and 13 per cent in mass for main-sequence stars with temperatures below 6400 K. However, further analysis is required to test the validity of the corrections on a star-by-star basis and for more evolved stars.

  10. Interpretation of the gap on the subgiant branch of several globular clusters

    Energy Technology Data Exchange (ETDEWEB)

    Armandroff, T.E.; Demarque, P.

    1984-10-01

    Four globular clusters whose color-magnitude diagrams show a gap on the subgiant branch are discussed. Standard stellar evolution theory does not predict the existence of a rapid phase of evolution at this point during a star's lifetime. A mechanism is outlined where this rapid evolutionary phase is attributed to the hydrogen-burning shell passing through a discontinuity in chemical composition. This discontinuity is set up by an ad-hoc mixing process. The plausibility of this mixing is discussed. The thermal-profile history of the star constrains this mixing process to occur only during a short period following the main-sequence turnoff. Evolutionary tracks constructed using this scheme result in a gap crossing time a factor of two smaller than the standard model and almost identical evolution outside the gap. While this is suggestive, it cannot completely explain the gap. Another possibility, that the gap is caused by a rapid change in atmospheric structure, is investigated by varying the mixing length in the convection zone. Tracks constructed in this manner are not consistent with the observed gaps.

  11. An interpretation of the gap on the subgiant branch of several globular clusters

    International Nuclear Information System (INIS)

    Armandroff, T.E.; Demarque, P.

    1984-01-01

    Four globular clusters whose color-magnitude diagrams show a gap on the subgiant branch are discussed. Standard stellar evolution theory does not predict the existence of a rapid phase of evolution at this point during a star's lifetime. A mechanism is outlined where this rapid evolutionary phase is attributed to the hydrogen-burning shell passing through a discontinuity in chemical composition. This discontinuity is set up by an ad-hoc mixing process. The plausibility of this mixing is discussed. The thermal-profile history of the star constrains this mixing process to occur only during a short period following the main-sequence turnoff. Evolutionary tracks constructed using this scheme result in a gap crossing time a factor of two smaller than the standard model and almost identical evolution outside the gap. While this is suggestive, it cannot completely explain the gap. Another possibility, that the gap is caused by a rapid change in atmospheric structure, is investigated by varying the mixing length in the convection zone. Tracks constructed in this manner are not consistent with the observed gaps. (orig.)

  12. CHARACTERIZING TWO SOLAR-TYPE KEPLER SUBGIANTS WITH ASTEROSEISMOLOGY: KIC 10920273 AND KIC 11395018

    International Nuclear Information System (INIS)

    Doğan, G.; Metcalfe, T. S.; Mathur, S.; Deheuvels, S.; Pinsonneault, M.; Di Mauro, M. P.; Eggenberger, P.; Creevey, O. L.; Monteiro, M. J. P. F. G.; Sousa, S. G.; Brandão, I. M.; Campante, T. L.; Frasca, A.; Karoff, C.; Handberg, R.; Thygesen, A. O.; Bruntt, H.; Biazzo, K.; Niemczura, E.; Bedding, T. R.

    2013-01-01

    Determining fundamental properties of stars through stellar modeling has improved substantially due to recent advances in asteroseismology. Thanks to the unprecedented data quality obtained by space missions, particularly CoRoT and Kepler, invaluable information is extracted from the high-precision stellar oscillation frequencies, which provide very strong constraints on possible stellar models for a given set of classical observations. In this work, we have characterized two relatively faint stars, KIC 10920273 and KIC 11395018, using oscillation data from Kepler photometry and atmospheric constraints from ground-based spectroscopy. Both stars have very similar atmospheric properties; however, using the individual frequencies extracted from the Kepler data, we have determined quite distinct global properties, with increased precision compared to that of earlier results. We found that both stars have left the main sequence and characterized them as follows: KIC 10920273 is a one-solar-mass star (M = 1.00 ± 0.04 M ☉ ), but much older than our Sun (t = 7.12 ± 0.47 Gyr), while KIC 11395018 is significantly more massive than the Sun (M = 1.27 ± 0.04 M ☉ ) with an age close to that of the Sun (t = 4.57 ± 0.23 Gyr). We confirm that the high lithium abundance reported for these stars should not be considered to represent young ages, as we precisely determined them to be evolved subgiants. We discuss the use of surface lithium abundance, rotation, and activity relations as potential age diagnostics.

  13. Radial Velocities of Subgiant Stars and New Astrophysical Insights into RV Jitter

    Science.gov (United States)

    Luhn, Jacob; Bastien, Fabienne; Wright, Jason T.

    2018-01-01

    For nearly 20 years, the California Planet Search (CPS) has simultaneously monitored precise radial velocities and chromospheric activity levels of stars from Keck observatory to search for exoplanets. This sample provides a useful set of stars to better determine the dependence of RV jitter on flicker (which traces surface gravity) first shown in Bastien et al. (2014). We expand upon this initial work by examining a much larger sample of stars covering a much wider range of stellar parameters (effective temperature, surface gravity, and activity, among others). For more than 600 stars, there are enough RV measurements to distinguish this astrophysical jitter from accelerations due to orbital companions. To properly isolate RV jitter from these effects, we must first remove the RV signal due to these companions, including several previously unannounced giant planets around subgiant stars. We highlight some new results from our analysis of the CPS data. A more thorough understanding of the various sources of RV jitter and the underlying stellar phenomena that drive these intrinsic RV variations will enable more precise jitter estimates for RV follow-up targets such as those from K2 or the upcoming TESS mission.

  14. Seismic constraints on the radial dependence of the internal rotation profiles of six Kepler subgiants and young red giants

    Science.gov (United States)

    Deheuvels, S.; Doğan, G.; Goupil, M. J.; Appourchaux, T.; Benomar, O.; Bruntt, H.; Campante, T. L.; Casagrande, L.; Ceillier, T.; Davies, G. R.; De Cat, P.; Fu, J. N.; García, R. A.; Lobel, A.; Mosser, B.; Reese, D. R.; Regulo, C.; Schou, J.; Stahn, T.; Thygesen, A. O.; Yang, X. H.; Chaplin, W. J.; Christensen-Dalsgaard, J.; Eggenberger, P.; Gizon, L.; Mathis, S.; Molenda-Żakowicz, J.; Pinsonneault, M.

    2014-04-01

    Context. We still do not understand which physical mechanisms are responsible for the transport of angular momentum inside stars. The recent detection of mixed modes that contain the clear signature of rotation in the spectra of Kepler subgiants and red giants gives us the opportunity to make progress on this question. Aims: Our aim is to probe the radial dependence of the rotation profiles for a sample of Kepler targets. For this purpose, subgiants and early red giants are particularly interesting targets because their rotational splittings are more sensitive to the rotation outside the deeper core than is the case for their more evolved counterparts. Methods: We first extracted the rotational splittings and frequencies of the modes for six young Kepler red giants. We then performed a seismic modeling of these stars using the evolutionary codes Cesam2k and astec. By using the observed splittings and the rotational kernels of the optimal models, we inverted the internal rotation profiles of the six stars. Results: We obtain estimates of the core rotation rates for these stars, and upper limits to the rotation in their convective envelope. We show that the rotation contrast between the core and the envelope increases during the subgiant branch. Our results also suggest that the core of subgiants spins up with time, while their envelope spins down. For two of the stars, we show that a discontinuous rotation profile with a deep discontinuity reproduces the observed splittings significantly better than a smooth rotation profile. Interestingly, the depths that are found to be most probable for the discontinuities roughly coincide with the location of the H-burning shell, which separates the layers that contract from those that expand. Conclusions: We characterized the differential rotation pattern of six young giants with a range of metallicities, and with both radiative and convective cores on the main sequence. This will bring observational constraints to the

  15. Intermediate mass dimuon events

    International Nuclear Information System (INIS)

    Moser, H.-G.

    1985-01-01

    We report the observation of 67 dimuon events at the CERN p anti p collider with the UA1 detector. The events will be interpreted in terms of the Drell-Yan mechanism, J/PSI and UPSILON decays and heavy flavour production. (author)

  16. L1188: A Promising Candidate for Cloud–Cloud Collisions Triggering the Formation of Low- and Intermediate-mass Stars

    Energy Technology Data Exchange (ETDEWEB)

    Gong, Yan; Fang, Min; Mao, Ruiqing; Zhang, Shaobo; Wang, Yuan; Su, Yang; Chen, Xuepeng; Yang, Ji; Wang, Hongchi; Lu, Dengrong, E-mail: ygong@pmo.ac.cn [Purple Mountain Observatory and Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, 2 West Beijing Road, 210008 Nanjing (China)

    2017-01-20

    We present a new large-scale (2° × 2°) simultaneous {sup 12}CO, {sup 13}CO, and C{sup 18}O (J = 1–0) mapping of L1188 with the Purple Mountain Observatory 13.7 m telescope. Our observations have revealed that L1188 consists of two nearly orthogonal filamentary molecular clouds at two clearly separated velocities. Toward the intersection showing large velocity spreads, we find several bridging features connecting the two clouds in velocity, and an open arc structure that exhibits high excitation temperatures, enhanced {sup 12}CO and {sup 13}CO emission, and broad {sup 12}CO line wings. This agrees with the scenario that the two clouds are colliding with each other. The distribution of young stellar object (YSO) candidates implies an enhancement of star formation in the intersection of the two clouds. We suggest that a cloud–cloud collision happened in L1188 about 1 Myr ago, possibly triggering the formation of low- and intermediate-mass YSOs in the intersection.

  17. Multiplicity correlations of intermediate-mass fragments with pions and fast protons in 12C + 197AU

    International Nuclear Information System (INIS)

    Turzo, K.; Begemann-Blaich, M.L.; Auger, G.

    2003-12-01

    Low-energy π + (E π 12 C+ 197 Au collisions at incident energies from 300 to 1800 MeV per nucleon were detected with the Si-Si(Li)-CsI(Tl) calibration telescopes of the INDRA multidetector. The inclusive angular distributions are approximately isotropic, consistent with multiple rescattering in the target spectator. The multiplicity correlations of the low-energy pions and of energetic protons (E p >or ≤ 150 MeV) with intermediate-mass fragments were determined from the measured coincidence data. The deduced correlation functions 1 + R ∼ 1.3 for inclusive event samples reflect the strong correlations evident from the common impact-parameter dependence of the considered multiplicities. For narrow impact-parameter bins (based on charged-particle multiplicity), the correlation functions are close to unity and do not indicate strong additional correlations. Only for pions at high particle multiplicities (central collisions) a weak anticorrelation is observed, probably due to a limited competition between these emissions. Overall, the results are consistent with the equilibrium assumption made in statistical multifragmentation scenarios. Predictions obtained with intranuclear cascade models coupled to the statistical multifragmentation model are in good agreement with the experimental data. (orig.)

  18. Search for Gravitational Wave Ringdowns from Perturbed Intermediate Mass Black Holes in LIGO-Virgo Data from 2005-2010

    Science.gov (United States)

    Aasi, J.; Abbott, B. P.; Abbott, R.; Abbott, T.; Abernathy, M. R.; Acernese, F.; Blackburn, Lindy L.; Camp, J. B.; Gehrels, N.; Graff, P. B.

    2014-01-01

    We report results from a search for gravitational waves produced by perturbed intermediate mass black holes (IMBH) in data collected by LIGO and Virgo between 2005 and 2010. The search was sensitive to astrophysical sources that produced damped sinusoid gravitational wave signals, also known as ringdowns, with frequency 50 less than or equal to italic f0/Hz less than or equal to 2000 and decay timescale 0.0001 approximately less than t/s approximately less than 0.1 characteristic of those produced in mergers of IMBH pairs. No significant gravitational wave candidate was detected. We report upper limits on the astrophysical coalescence rates of IMBHs with total binary mass 50 less than or equal to M/solar mass less than or equal to 450 and component mass ratios of either 1:1 or 4:1. For systems with total mass 100 less than or equal to M/solar mass 150, we report a 90%-confidence upper limit on the rate of binary IMBH mergers with non-spinning and equal mass components of 6:9 x 10(exp 8) Mpc(exp -3)yr(exp -1). We also report a rate upper limit for ringdown waveforms from perturbed IMBHs, radiating 1% of their mass as gravitational waves in the fundamental, l=m=2, oscillation mode, that is nearly three orders of magnitude more stringent than previous results.

  19. High-resolution Hydrodynamic Simulation of Tidal Detonation of a Helium White Dwarf by an Intermediate Mass Black Hole

    Science.gov (United States)

    Tanikawa, Ataru

    2018-05-01

    We demonstrate tidal detonation during a tidal disruption event (TDE) of a helium (He) white dwarf (WD) with 0.45 M ⊙ by an intermediate mass black hole using extremely high-resolution simulations. Tanikawa et al. have shown tidal detonation in results of previous studies from unphysical heating due to low-resolution simulations, and such unphysical heating occurs in three-dimensional (3D) smoothed particle hydrodynamics (SPH) simulations even with 10 million SPH particles. In order to avoid such unphysical heating, we perform 3D SPH simulations up to 300 million SPH particles, and 1D mesh simulations using flow structure in the 3D SPH simulations for 1D initial conditions. The 1D mesh simulations have higher resolutions than the 3D SPH simulations. We show that tidal detonation occurs and confirm that this result is perfectly converged with different space resolution in both 3D SPH and 1D mesh simulations. We find that detonation waves independently arise in leading parts of the WD, and yield large amounts of 56Ni. Although detonation waves are not generated in trailing parts of the WD, the trailing parts would receive detonation waves generated in the leading parts and would leave large amounts of Si group elements. Eventually, this He WD TDE would synthesize 56Ni of 0.30 M ⊙ and Si group elements of 0.08 M ⊙, and could be observed as a luminous thermonuclear transient comparable to SNe Ia.

  20. Searching for intermediate-mass black holes in galaxies with low-luminosity AGN: a multiple-method approach

    Science.gov (United States)

    Koliopanos, F.; Ciambur, B.; Graham, A.; Webb, N.; Coriat, M.; Mutlu-Pakdil, B.; Davis, B.; Godet, O.; Barret, D.; Seigar, M.

    2017-10-01

    Intermediate Mass Black Holes (IMBHs) are predicted by a variety of models and are the likely seeds for super massive BHs (SMBHs). However, we have yet to establish their existence. One method, by which we can discover IMBHs, is by measuring the mass of an accreting BH, using X-ray and radio observations and drawing on the correlation between radio luminosity, X-ray luminosity and the BH mass, known as the fundamental plane of BH activity (FP-BH). Furthermore, the mass of BHs in the centers of galaxies, can be estimated using scaling relations between BH mass and galactic properties. We are initiating a campaign to search for IMBH candidates in dwarf galaxies with low-luminosity AGN, using - for the first time - three different scaling relations and the FP-BH, simultaneously. In this first stage of our campaign, we measure the mass of seven LLAGN, that have been previously suggested to host central IMBHs, investigate the consistency between the predictions of the BH scaling relations and the FP-BH, in the low mass regime and demonstrate that this multiple method approach provides a robust average mass prediction. In my talk, I will discuss our methodology, results and next steps of this campaign.

  1. Angular distributions of intermediate mass fragments emitted in 30 MeV/u 40Ar induced reactions

    International Nuclear Information System (INIS)

    Gou Quanbu; Zhu Yongtai; Xu Hushan; Wei Zhiyong; Lu Jun; Zhang Yuhu; Wang Qi; Li Songlin; Wu Zhongli

    1999-01-01

    The angular distributions of intermediate mass fragments with charge numbers from 3 to 24 emitted in 30 MeV/u 40 Ar + 58,64 Ni and 115 In reactions over an angular range of 5 degree-140 degree have been measured. In different angular region an exponential distribution function dσ/dΩ = N exp(-θ/α) was used to fit the measured angular distributions. The decay factor α which can be connected with the interaction time τ and the factor N which is related to the intensity of the emission sources have been extracted. The relationship of α(Z) and N(Z) with Z for different reaction systems and different angular regions has been discussed. The different behavior of dσ/dΩ, α(Z), and N(Z) for the three studied reaction systems exists mainly in the middle and backward angular regions. The dependencies of angular distributions on isospin and the size of reaction systems have also been discussed

  2. A NEW CLASS OF GAMMA-RAY BURSTS FROM STELLAR DISRUPTIONS BY INTERMEDIATE-MASS BLACK HOLES

    International Nuclear Information System (INIS)

    Gao, H.; Lu, Y.; Zhang, S. N.

    2010-01-01

    It has been argued that the long gamma-ray burst (GRB) of GRB 060614 without an associated supernova (SN) has challenged the current classification and fuel model for long GRBs, and thus a tidal disruption model has been proposed to account for such an event. Since it is difficult to detect SNe for long GRBs at high redshift, the absence of an SN association cannot be regarded as the solid criterion for a new classification of long GRBs similar to GRB 060614, called GRB 060614-type bursts. Fortunately, we now know that there is an obvious periodic substructure observed in the prompt light curve of GRB 060614. We thus use such periodic substructure as a potential criterion to categorize some long GRBs into a new class of bursts, which might have been fueled by an intermediate-mass black hole (IMBH) gulping a star, rather than a massive star collapsing to form a black hole. Therefore, the second criterion to recognize for this new class of bursts is whether they fit the tidal disruption model. From a total of 328 Swift GRBs with accurately measured durations and without SN association, we find 25 GRBs satisfying the criteria for GRB 060614-type bursts: seven of them are with known redshifts and 18 with unknown redshifts. These new bursts are ∼6% of the total Swift GRBs, which are clustered into two subclasses: Type I and Type II with considerably different viscous parameters of accretion disks formed by tidally disrupting their different progenitor stars. We suggest that the two different kinds of progenitors are solar-type stars and white dwarfs: the progenitors for four Type I bursts with viscous parameter of around 0.1 are solar-type stars, and the progenitors for 21 Type II bursts with viscous parameter of around 0.3 are white dwarfs. The potential applications of this new class of GRBs as cosmic standard candles are discussed briefly.

  3. Emsission of intermediate mass fragments in the p(1.9 GeV)+natNI reaction

    International Nuclear Information System (INIS)

    Bubak, A.

    2004-06-01

    The emission of the intermediate mass fragments (IMFs; 2 ≤ Z ≤ 14) produced in the interaction of 1.9 GeV protons with nickel ( nat Ni) has been a subject of interest of the present study. Energy spectra of isotopically and elementally identified ejectiles have been measured at angles 15 and 120 with the respect to the beam direction. The identification of the emitted IMFs has been performed by means of the Bragg curve spectroscopy and the time-of-flight technique (TOF). The Bragg curve detectors (BCDs) were employed for the charge identification, whereas the TOF method combined with the BCD, for the mass identification. The main task of the present PhD thesis was to built appropriate data acquisition system, to perform the experiment on the internal beam of the COSY accelerator, to propose the methodology of the off-line analysis of the data, to apply it to the event-by-event stored data, and to perform the phenomenological analysis of the obtained data. The results, experimental procedures, and different techniques of the element and isotope identification by means of the BCD + TOF are presented. The determination of the power law parameter τ characterizing the mass and charge distributions of the reaction products is discussed. Various methods of the nuclear matter temperature determination, the comparison between nuclear matter thermometers, and the discussion of the obtained results, shown in the energy-temperature diagram (the so called caloric curve), are presented as well. The results suggest two different mechanisms of the IMFs production: from the equilibrated (IMFs measured at 120 ), and non-equilibrated (IMFs measured at 15 ) state of the nucleus. (orig.)

  4. Does Explosive Nuclear Burning Occur in Tidal Disruption Events of White Dwarfs by Intermediate-mass Black Holes?

    Energy Technology Data Exchange (ETDEWEB)

    Tanikawa, Ataru; Sato, Yushi; Hachisu, Izumi [Department of Earth Science and Astronomy, College of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902 (Japan); Nomoto, Ken’ichi; Maeda, Keiichi [Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583 (Japan); Nakasato, Naohito, E-mail: tanikawa@ea.c.u-tokyo.ac.jp [Department of Computer Science and Engineering, University of Aizu, Tsuruga Ikki-machi Aizu-Wakamatsu, Fukushima 965-8580 (Japan)

    2017-04-20

    We investigate nucleosynthesis in tidal disruption events (TDEs) of white dwarfs (WDs) by intermediate-mass black holes. We consider various types of WDs with different masses and compositions by means of three-dimensional (3D) smoothed particle hydrodynamics (SPH) simulations. We model these WDs with different numbers of SPH particles, N , from a few 10{sup 4} to a few 10{sup 7} in order to check mass resolution convergence, where SPH simulations with N > 10{sup 7} (or a space resolution of several 10{sup 6} cm) have unprecedentedly high resolution in this kind of simulation. We find that nuclear reactions become less active with increasing N and that these nuclear reactions are excited by spurious heating due to low resolution. Moreover, we find no shock wave generation. In order to investigate the reason for the absence of a shock wave, we additionally perform one-dimensional (1D) SPH and mesh-based simulations with a space resolution ranging from 10{sup 4} to 10{sup 7} cm, using a characteristic flow structure extracted from the 3D SPH simulations. We find shock waves in these 1D high-resolution simulations, one of which triggers a detonation wave. However, we must be careful of the fact that, if the shock wave emerged in an outer region, it could not trigger the detonation wave due to low density. Note that the 1D initial conditions lack accuracy to precisely determine where a shock wave emerges. We need to perform 3D simulations with ≲10{sup 6} cm space resolution in order to conclude that WD TDEs become optical transients powered by radioactive nuclei.

  5. Wandering off the centre: a characterization of the random motion of intermediate-mass black holes in star clusters

    Science.gov (United States)

    de Vita, Ruggero; Trenti, Michele; MacLeod, Morgan

    2018-04-01

    Despite recent observational efforts, unequivocal signs for the presence of intermediate-mass black holes (IMBHs) in globular clusters (GCs) have not been found yet. Especially when the presence of IMBHs is constrained through dynamical modelling of stellar kinematics, it is fundamental to account for the displacement that the IMBH might have with respect to the GC centre. In this paper, we analyse the IMBH wandering around the stellar density centre using a set of realistic direct N-body simulations of star cluster evolution. Guided by the simulation results, we develop a basic yet accurate model that can be used to estimate the average IMBH radial displacement (〈rbh〉) in terms of structural quantities as the core radius (rc), mass (Mc), and velocity dispersion (σc), in addition to the average stellar mass (mc) and the IMBH mass (Mbh). The model can be expressed by the equation /r_c=A(m_c/M_bh)^α [σ _c^2r_c/(GM_c)]^β, in which the free parameters A, α, and β are calculated through comparison with the numerical results on the IMBH displacement. The model is then applied to Galactic GCs, finding that for an IMBH mass equal to 0.1 per cent of the GC mass, the typical expected displacement of a putative IMBH is around 1 arcsec for most Galactic GCs, but IMBHs can wander to larger angular distances in some objects, including a prediction of a 2.5 arcsec displacement for NGC 5139 (ω Cen), and >10 arcsec for NGC5053, NGC6366, and ARP2.

  6. Prospects for detection of intermediate-mass black holes in globular clusters using integrated-light spectroscopy

    Science.gov (United States)

    de Vita, R.; Trenti, M.; Bianchini, P.; Askar, A.; Giersz, M.; van de Ven, G.

    2017-06-01

    The detection of intermediate-mass black holes (IMBHs) in Galactic globular clusters (GCs) has so far been controversial. In order to characterize the effectiveness of integrated-light spectroscopy through integral field units, we analyse realistic mock data generated from state-of-the-art Monte Carlo simulations of GCs with a central IMBH, considering different setups and conditions varying IMBH mass, cluster distance and accuracy in determination of the centre. The mock observations are modelled with isotropic Jeans models to assess the success rate in identifying the IMBH presence, which we find to be primarily dependent on IMBH mass. However, even for an IMBH of considerable mass (3 per cent of the total GC mass), the analysis does not yield conclusive results in one out of five cases, because of shot noise due to bright stars close to the IMBH line of sight. This stochastic variability in the modelling outcome grows with decreasing BH mass, with approximately three failures out of four for IMBHs with 0.1 per cent of total GC mass. Finally, we find that our analysis is generally unable to exclude at 68 per cent confidence an IMBH with mass of 103 M⊙ in snapshots without a central BH. Interestingly, our results are not sensitive to GC distance within 5-20 kpc, nor to misidentification of the GC centre by less than 2 arcsec (<20 per cent of the core radius). These findings highlight the value of ground-based integral field spectroscopy for large GC surveys, where systematic failures can be accounted for, but stress the importance of discrete kinematic measurements that are less affected by stochasticity induced by bright stars.

  7. Burn out or fade away? On the X-ray and magnetic death of intermediate mass stars

    Energy Technology Data Exchange (ETDEWEB)

    Drake, Jeremy J.; Kashyap, Vinay; Günther, H. Moritz; Wright, Nicholas J. [Smithsonian Astrophysical Observatory, MS-3, 60 Garden Street, Cambridge, MA 02138 (United States); Braithwaite, Jonathan, E-mail: jdrake@cfa.harvard.edu [Argelander Institut für Astronomie, Auf dem Hügel 71, D-53121 Bonn (Germany)

    2014-05-10

    The nature of the mechanisms apparently driving X-rays from intermediate mass stars lacking strong convection zones or massive winds remains poorly understood, and the possible role of hidden, lower mass close companions is still unclear. A 20 ks Chandra HRC-I observation of HR 4796A, an 8 Myr old main sequence A0 star devoid of close stellar companions, has been used to search for a signature or remnant of magnetic activity from the Herbig Ae phase. X-rays were not detected and the X-ray luminosity upper limit was L{sub X} ≤ 1.3 × 10{sup 27} erg s{sup –1}. The result is discussed in the context of various scenarios for generating magnetic activity, including rotational shear and subsurface convection. A dynamo driven by natal differential rotation is unlikely to produce observable X rays, chiefly because of the difficulty in getting the dissipated energy up to the surface of the star. A subsurface convection layer produced by the ionization of helium could host a dynamo that should be effective throughout the main sequence but can only produce X-ray luminosities of the order 10{sup 25} erg s{sup –1}. This luminosity lies only moderately below the current detection limit for Vega. Our study supports the idea that X-ray production in Herbig Ae/Be stars is linked largely to the accretion process rather than the properties of the underlying star, and that early A stars generally decline in X-ray luminosity at least 100,000 fold in only a few million years.

  8. REVERBERATION MAPPING OF THE INTERMEDIATE-MASS NUCLEAR BLACK HOLE IN SDSS J114008.71+030711.4

    International Nuclear Information System (INIS)

    Rafter, Stephen E.; Kaspi, Shai; Behar, Ehud; Kollatschny, Wolfram; Zetzl, Matthias

    2011-01-01

    We present the results of a reverberation mapping (RM) campaign on the black hole (BH) associated with the active galactic nucleus (AGN) in SDSS J114008.71+030711.4 (hereafter GH08). This object is selected from a sample of 19 candidate intermediate-mass BHs (M BH 6 M sun ) found by Greene and Ho in the Sloan Digital Sky Survey. We used the Hobby-Eberly Telescope to obtain 30 spectra over a period of 178 days in an attempt to resolve the reverberation time lag (τ) between the continuum source and the broad-line region (BLR) in order to determine the radius of the BLR (R BLR ) in GH08. We measure τ to be two days with an upper limit of six days. We estimate the AGN luminosity at 5100 Å to be λL 5100 ≈ 1.1 × 10 43 erg s –1 after deconvolution from the host galaxy. The most well-calibrated R BLR –L relation predicts a time lag that is four times larger than what we measure. Using the measured Hβ full width at half-maximum of 703 ± 110 km s –1 and an upper limit for R BLR =6 light days, we find M BH ∼ 5 M sun as an upper limit to the BH virial mass in GH08, which implies super-Eddington accretion. Based on our measured M BH we propose that GH08 may be another candidate to add to the very short list of AGNs with M BH 6 M sun determined using RM.

  9. Testing the Paradigm that Ultraluminous X-Ray Sources as a Class Represent Accreting Intermediate-Mass Black Holes

    Science.gov (United States)

    Berghea, C. T.; Weaver, K. A.; Colbert, E. J. M.; Roberts, T. P.

    2008-11-01

    To test the idea that ultraluminous X-ray sources (ULXs) in external galaxies represent a class of accreting intermediate-mass black holes (IMBHs), we have undertaken a program to identify ULXs and a lower luminosity X-ray comparison sample with the highest quality data in the Chandra archive. We establish as a general property of ULXs that the most X-ray-luminous objects possess the flattest X-ray spectra (in the Chandra bandpass). No prior sample studies have established the general hardening of ULX spectra with luminosity. This hardening occurs at the highest luminosities (absorbed luminosity >=5 × 1039 erg s-1) and is in line with recent models arguing that ULXs are actually stellar mass black holes. From spectral modeling, we show that the evidence originally taken to mean that ULXs are IMBHs—i.e., the "simple IMBH model"—is nowhere near as compelling when a large sample of ULXs is looked at properly. During the last couple of years, XMM-Newton spectroscopy of ULXs has to a large extent begun to negate the simple IMBH model based on fewer objects. We confirm and expand these results, which validates the XMM-Newton work in a broader sense with independent X-ray data. We find that (1) cool-disk components are present with roughly equal probability and total flux fraction for any given ULX, regardless of luminosity, and (2) cool-disk components extend below the standard ULX luminosity cutoff of 1039 erg s-1, down to our sample limit of 1038.3 erg s-1. The fact that cool-disk components are not correlated with luminosity damages the argument that cool disks indicate IMBHs in ULXs, for which strong statistical support was never found.

  10. Inductive Monitoring System (IMS)

    Data.gov (United States)

    National Aeronautics and Space Administration — IMS: Inductive Monitoring System The Inductive Monitoring System (IMS) is a tool that uses a data mining technique called clustering to extract models of normal...

  11. EVOLUTION OF INTERMEDIATE-MASS X-RAY BINARIES DRIVEN BY THE MAGNETIC BRAKING OF AP/BP STARS. I. ULTRACOMPACT X-RAY BINARIES

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Wen-Cong [School of Physics and Electrical Information, Shangqiu Normal University, Shangqiu 476000 (China); Podsiadlowski, Philipp, E-mail: chenwc@pku.edu.cn [Department of Physics, University of Oxford, Oxford OX1 3RH (United Kingdom)

    2016-10-20

    It is generally believed that ultracompact X-ray binaries (UCXBs) evolved from binaries consisting of a neutron star accreting from a low-mass white dwarf (WD) or helium star where mass transfer is driven by gravitational radiation. However, the standard WD evolutionary channel cannot produce the relatively long-period (40–60 minutes) UCXBs with a high time-averaged mass-transfer rate. In this work, we explore an alternative evolutionary route toward UCXBs, where the companions evolve from intermediate-mass Ap/Bp stars with an anomalously strong magnetic field (100–10,000 G). Including the magnetic braking caused by the coupling between the magnetic field and an irradiation-driven wind induced by the X-ray flux from the accreting component, we show that intermediate-mass X-ray binaries (IMXBs) can evolve into UCXBs. Using the MESA code, we have calculated evolutionary sequences for a large number of IMXBs. The simulated results indicate that, for a small wind-driving efficiency f = 10{sup −5}, the anomalous magnetic braking can drive IMXBs to an ultra-short period of 11 minutes. Comparing our simulated results with the observed parameters of 15 identified UCXBs, the anomalous magnetic braking evolutionary channel can account for the formation of seven and eight sources with f = 10{sup −3}, and 10{sup −5}, respectively. In particular, a relatively large value of f can fit three of the long-period, persistent sources with a high mass-transfer rate. Though the proportion of Ap/Bp stars in intermediate-mass stars is only 5%, the lifetime of the UCXB phase is ≳2 Gyr, producing a relatively high number of observable systems, making this an alternative evolutionary channel for the formation of UCXBs.

  12. Sensitivity of gravitational wave searches to the full signal of intermediate-mass black hole binaries during the first observing run of Advanced LIGO

    Science.gov (United States)

    Calderón Bustillo, Juan; Salemi, Francesco; Dal Canton, Tito; Jani, Karan P.

    2018-01-01

    The sensitivity of gravitational wave searches for binary black holes is estimated via the injection and posterior recovery of simulated gravitational wave signals in the detector data streams. When a search reports no detections, the estimated sensitivity is then used to place upper limits on the coalescence rate of the target source. In order to obtain correct sensitivity and rate estimates, the injected waveforms must be faithful representations of the real signals. Up to date, however, injected waveforms have neglected radiation modes of order higher than the quadrupole, potentially biasing sensitivity and coalescence rate estimates. In particular, higher-order modes are known to have a large impact in the gravitational waves emitted by intermediate-mass black holes binaries. In this work, we evaluate the impact of this approximation in the context of two search algorithms run by the LIGO Scientific Collaboration in their search for intermediate-mass black hole binaries in the O1 LIGO Science Run data: a matched filter-based pipeline and a coherent unmodeled one. To this end, we estimate the sensitivity of both searches to simulated signals for nonspinning binaries including and omitting higher-order modes. We find that omission of higher-order modes leads to biases in the sensitivity estimates which depend on the masses of the binary, the search algorithm, and the required level of significance for detection. In addition, we compare the sensitivity of the two search algorithms across the studied parameter space. We conclude that the most recent LIGO-Virgo upper limits on the rate of coalescence of intermediate-mass black hole binaries are conservative for the case of highly asymmetric binaries. However, the tightest upper limits, placed for nearly equal-mass sources, remain unchanged due to the small contribution of higher modes to the corresponding sources.

  13. A midrapidity source of intermediate mass fragments in highly central collisions of Au+Au at 150 A MeV

    Energy Technology Data Exchange (ETDEWEB)

    Alard, J P; Bastid, N; Crouau, M; Dupieux, P; Fraysse, L; Jorio, M; Montarou, G; Morel, P [Laboratoire de Physique Corpusculaire, 63 - Clermont-Ferrand (France); Basrak, Z; Caplar, R; Cindro, N; Hoelbling, S [Rudjer Boskovic Inst., Zagreb (Yugoslavia); Belayev, I M; Frolov, S; Korchagin, Y; Lebedev, A; Smolyankin, S; Zhilin, A V [Institute for Experimental and Theoretical Physics, Moscow (Russia); Bini, M; Olmi, A; Pasquali, G; Poggi, G; Taccetti, N [Florence Univ. (Italy); [INFN, Florence (Italy); Blaich, T [Mainz Univ. (Germany); Buta, A; Legrand, I; Moisa, D; Petrovici, M; Simion, V [Institute for Physics and Nuclear Engineering, Bucharest (Romania); Cerruti, C; Coffin, J P; Fintz, P; Guillaume, G; Houari, O; Jundt, F; Kuhn, C; Maguire, C; Rami, F; Tezkratt, R; Wagner, P [Centre de Recherches Nucleaires, 67 - Strasbourg (France); [Strasbourg Univ., 67 (France); Eroe, J; Fodor, Z; Kecskemeti, J; Koncz, P; Seres, Z [Central Research Inst. for Physics, Budapest (Hungary); Grigoriyan, Y; Manko, V; Mgebrishvili, G; Sadchikov, A; Vasiliev, M A [Kurchatov Inst. for Atomic Energy, Moscow (Russia); Herrmann, N; Pelte, D; Trzaska, M; Wienold, T [Heidelberg Univ. (Germany). Physikalisches Inst.; Kotte, R; Moesner, J; Neubert, W; Wohlfarth, D [Forschungszentrum Rossendorf (Germany); Matulewicz, T; Sikora, B; Wilhelmi, Z [Warsaw Univ. (Poland). Inst. of Experimental Physics; Bock, R; Fan, Z G; Freifelder, R; Gobbi, A; Hildenbrand, K D; Jeong, S C; Kraemer, M; Reisdorf, W; Schuell, D; Sodan, U; Teh, K; Wessels, J P; FOPI Collaboration at GSI

    1992-02-01

    Charged particles have been observed in collisions of Au on Au at incident energy of 150 A MeV using a high-granularity detector system covering approximatley the forward hemisphere in the center-of-mass system. Highly central collisions have been studied using a double selection criterion which combines large charged particle multiplicities with small transverse momentum directivities. In this class of events about one quarter of the total nuclear charge emerges as intermediate mass fragments with nuclear charges Z>2. These fragments are centred at midrapidity and are produced with large transverse velocities. (orig.).

  14. Search for ternary fragmentation in the reaction 856 MeV 98Mo + 51V: Kinematic probing of intermediate-mass-fragment emissions

    International Nuclear Information System (INIS)

    Vardaci, Emanuele; Kaplan, Morton; Parker, Winifred E.; Moses, David J.; Boger, J.T.; Gilfoyle, G.T.; McMahan, M.A.; Montoya, M.

    2000-05-01

    A new technique has been applied to coincidence measurements between fission fragments (FF) and intermediate mass fragments (IMF) emitted from the composite system 149 65 Tb at an excitation energy of 224 MeV. The method permits simultaneous observation of IMF emissions along and normal to the FF separation axes. For the integrated total of 0.10 +-0.02 IMF emitted per fission, we find no significant correlation with FF direction, suggesting that IMFs associated with fission reactions are predominantly emitted from the system prior to fission

  15. A midrapidity source of intermediate mass fragments in highly central collisions of Au+Au at 150 A MeV

    International Nuclear Information System (INIS)

    Alard, J.P.; Bastid, N.; Crouau, M.; Dupieux, P.; Fraysse, L.; Jorio, M.; Montarou, G.; Morel, P.; Basrak, Z.; Caplar, R.; Cindro, N.; Hoelbling, S.; Belayev, I.M.; Frolov, S.; Korchagin, Y.; Lebedev, A.; Smolyankin, S.; Zhilin, A.V.; Bini, M.; Olmi, A.; Pasquali, G.; Poggi, G.; Taccetti, N.; Blaich, T.; Buta, A.; Legrand, I.; Moisa, D.; Petrovici, M.; Simion, V.; Cerruti, C.; Coffin, J.P.; Fintz, P.; Guillaume, G.; Houari, O.; Jundt, F.; Kuhn, C.; Maguire, C.; Rami, F.; Tezkratt, R.; Wagner, P.; Eroe, J.; Fodor, Z.; Kecskemeti, J.; Koncz, P.; Seres, Z.; Grigoriyan, Y.; Manko, V.; Mgebrishvili, G.; Sadchikov, A.; Vasiliev, M.A.; Herrmann, N.; Pelte, D.; Trzaska, M.; Wienold, T.; Matulewicz, T.; Sikora, B.; Wilhelmi, Z.; Bock, R.; Fan, Z.G.; Freifelder, R.; Gobbi, A.; Hildenbrand, K.D.; Jeong, S.C.; Kraemer, M.; Reisdorf, W.; Schuell, D.; Sodan, U.; Teh, K.; Wessels, J.P.

    1992-02-01

    Charged particles have been observed in collisions of Au on Au at incident energy of 150 A MeV using a high-granularity detector system covering approximatley the forward hemisphere in the center-of-mass system. Highly central collisions have been studied using a double selection criterion which combines large charged particle multiplicities with small transverse momentum directivities. In this class of events about one quarter of the total nuclear charge emerges as intermediate mass fragments with nuclear charges Z>2. These fragments are centred at midrapidity and are produced with large transverse velocities. (orig.)

  16. OPTICAL VARIABILITY OF THE ACCRETION DISK AROUND THE INTERMEDIATE-MASS BLACK HOLE ESO 243-49 HLX-1 DURING THE 2012 OUTBURST

    Energy Technology Data Exchange (ETDEWEB)

    Webb, N. A.; Godet, O.; Barret, D. [Université de Toulouse, UPS-OMP, IRAP, Toulouse (France); Wiersema, K. [University of Leicester, University Road, Leicester LE1 7RH (United Kingdom); Lasota, J.-P. [Institut d' Astrophysique de Paris, UMR 7095, CNRS, UPMC Université Paris 06, 98bis Boulevard Arago, F-75014 Paris (France); Farrell, S. A. [Sydney Institute for Astronomy, School of Physics, The University of Sydney, NSW 2006 (Australia); Maccarone, T. J. [Department of Physics, Box 41051, Texas Tech University, Lubbock TX 79409-1051 (United States); Servillat, M., E-mail: natalie.webb@irap.omp.eu [Laboratoire AIM (CEA/DSM/IRFU/SAp, CNRS, Université Paris Diderot), CEA Saclay, Bat. 709, F-91191 Gif-sur-Yvette (France)

    2014-01-01

    We present dedicated quasi-simultaneous X-ray (Swift) and optical (Very Large Telescope, V-, and R-band) observations of the intermediate-mass black hole candidate HLX-1 before and during the 2012 outburst. We show that the V-band magnitudes vary with time, thus proving that a portion of the observed emission originates in the accretion disk. Using the first quiescent optical observations of HLX-1, we show that the stellar population surrounding HLX-1 is fainter than V ∼ 25.1 and R ∼ 24.2. We show that the optical emission may increase before the X-ray emission consistent with the scenario proposed by Lasota et al. in which the regular outbursts could be related to the passage at periastron of a star circling the intermediate-mass black hole in an eccentric orbit, which triggers mass transfer into a quasi-permanent accretion disk around the black hole. Further, if there is indeed a delay in the X-ray emission we estimate the mass-transfer delivery radius to be ∼10{sup 11} cm.

  17. A next-to-leading-log Monte Carlo study of photon pairs and the search for the intermediate mass Higgs Boson

    International Nuclear Information System (INIS)

    Bailey, B.R.

    1993-01-01

    Symmetry breaking and the question of the origin of mass are the reasons the Superconducting Super Collider and the Large Hadron Collider are being built. The Standard Model of particle physics provides a solution to this problem by proposing the existence of a neutral scalar particle, the Higgs boson. This particle, via its interactions, gives mass to all of the particles in the Standard Model. The question of whether the Higgs boson can be detected at these machines depends critically on its final state decays. These decays in turn depend crucially on the mass of the Higgs boson, an unknown parameter of the theory. A lower bound of the Higgs mass has been set by experiment and a upper bound via theoretical arguments. Throughout much of the mass range Higgs decays via weak gauge bosons yield a clear signal. However, near the lower limit, the so-called intermediate mass region, the situation is less clear. In this region Higgs decays into photon pairs have been suggested as a viable signal. The significance of such a signal depends on other competing processes or backgrounds. This dissertation attempts to answer the question, open-quotes Can the Intermediate mass Higgs boson be detected via its electromagnetic decays?close quotes To answer this question various Standard Model processes are calculated to the leading-log and next-to-leading-log level in a Monte Carlo environment

  18. Bremssysteme im Personenkraftwagen

    Science.gov (United States)

    Reif, Konrad

    Für die ersten drei Punkte ist die Betriebsbremsanlage ("Fußbremse“) zuständig. Der Fahrer aktiviert sie durch Betätigen des Bremspedals. Die Feststellbremsanlage ("Handbremse“) hält das Fahrzeug im Stillstand.

  19. Geschlechterstereotype im Einsatz

    Directory of Open Access Journals (Sweden)

    Erika Kegyes

    2007-11-01

    Full Text Available Die umfangreiche Monographie gehört zum Forschungsbereich der kritischen angewandten Linguistik (Critical Applied Linguistics und liegt sowohl theoretisch als auch praktisch im Schnittpunkt der gender- und werbesprachlichen Untersuchungen.

  20. Towards a dynamical description of intermediate mass fragment formation in heavy-ion collisions at some tens of MeV/A

    International Nuclear Information System (INIS)

    Suraud, E.

    1990-01-01

    We briefly remind the possible dynamical scenario of fragments formation in central heavy-ion collisions at some tens of MeV/A. We discuss how present day dynamical models can describe fragment formation. We show that particle methods provide a reasonable solution of Boltzman-like equations. We next turn to the Boltzmann-Langevin formalism which gives a well defined framework for the understanding of Intermediate Mass Fragments formation. We present a first numerical solution of this equation and show the importance of fluctuations in the dynamics of the collision. We finally apply the formalism to the onset of multifragmentation in the 40 Ca + 40 Ca system between 20 and 60 MeV/A beam energy

  1. Emission of intermediate mass fragments in the heavy ion interaction of (14.0 MeV/u) Pb+Au

    International Nuclear Information System (INIS)

    Khan, E.U.; Qureshi, I.E.; Shahzad, M.I.; Khattak, F.N.; Khan, H.A.

    2001-01-01

    We have studied the heavy ion interactions of (14.0 MeV/u) Pb + Au using two threshold detectors, mica and CN-85. A thin layer of Au was deposited on each of the three mica and two CN-85 detector pieces. These target-detector assemblies were exposed to a beam of 14.0 MeV/u Pb ions having the fluence of 1.5x10 6 cm 2 at GSI, Darmstadt, Germany. After removing the target material and etching the samples in appropriate etchants, we scanned 32.29 cm 2 and 24.97 cm 2 area of mica and CN-85, respectively. Based on the observed number of events of various multiplicities, we have determined the total as well as partial experimental reaction cross-sections. It is shown that a significant number of intermediate mass fragments are emitted along with the heavy fragments in the present reaction

  2. Fission of intermediate mass nuclei by photons of stopping radiation in the maximum energy range 0,8 - 1,8 MeV

    International Nuclear Information System (INIS)

    Lima, D.A. de.

    1983-07-01

    The fission of intermediate mass nuclei in Al - Ta interval, induced by stopping radiation phtons of maximum energies between 0,8 and 1.8 GeV is studied. Nd and Sm thin targets and Al, Ti, Co, Zr, Nb, Ag, In and Ta thick targets were used, considering all peculiarities inherent to absorption of fission fragments in the target. The samples were exposed into the 2.5 GeV Electron Synchrotron in Bonn Univerity. The fission fragment tracks were registered in foil type detectors using mica muscovite for Sm and Nd, CR-39 for Al and Ti and makrofol for Co, Zr; Nb, Ag, In, Nd and Ta. The track length and track depth angle distributions were measured for determining fission efficiencies. The fission cross sections and nuclear fissionable of the studied elements were evaluated. (M.C.K.) [pt

  3. Robo-AO Kepler Asteroseismic Survey. I. Adaptive Optics Imaging of 99 Asteroseismic Kepler Dwarfs and Subgiants

    Energy Technology Data Exchange (ETDEWEB)

    Schonhut-Stasik, Jessica S.; Baranec, Christoph; Huber, Daniel; Atkinson, Dani; Hagelberg, Janis; Marel, Nienke van der; Hodapp, Klaus W. [Institute for Astronomy, University of Hawai‘i at Mānoa, Hilo, HI 96720-2700 (United States); Ziegler, Carl; Law, Nicholas M. [Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3255 (United States); Gaidos, Eric [Department of Geology and Geophysics, University of Hawai‘i at Mānoa, Honolulu, HI 96822 (United States); Riddle, Reed, E-mail: jstasik@hawaii.edu [Division of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, CA 91125 (United States)

    2017-10-01

    We used the Robo-AO laser adaptive optics (AOs) system to image 99 main sequence and subgiant stars that have Kepler -detected asteroseismic signals. Robo-AO allows us to resolve blended secondary sources at separations as close as ∼0.″15 that may contribute to the measured Kepler light curves and affect asteroseismic analysis and interpretation. We report eight new secondary sources within 4.″0 of these Kepler asteroseismic stars. We used Subaru and Keck AOs to measure differential infrared photometry for these candidate companion systems. Two of the secondary sources are likely foreground objects, while the remaining six are background sources; however, we cannot exclude the possibility that three of the objects may be physically associated. We measured a range of i ′-band amplitude dilutions for the candidate companion systems from 0.43% to 15.4%. We find that the measured amplitude dilutions are insufficient to explain the previously identified excess scatter in the relationship between asteroseismic oscillation amplitude and the frequency of maximum power.

  4. On the Origin of Sub-subgiant Stars. II. Binary Mass Transfer, Envelope Stripping, and Magnetic Activity

    Energy Technology Data Exchange (ETDEWEB)

    Leiner, Emily; Mathieu, Robert D. [Department of Astronomy, University of Wisconsin-Madison, 475 North Charter Street, Madison, WI 53706 (United States); Geller, Aaron M., E-mail: leiner@astro.wisc.edu [Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (United States)

    2017-05-10

    Sub-subgiant stars (SSGs) lie to the red of the main sequence and fainter than the red giant branch in cluster color–magnitude diagrams (CMDs), a region not easily populated by standard stellar evolution pathways. While there has been speculation on what mechanisms may create these unusual stars, no well-developed theory exists to explain their origins. Here we discuss three hypotheses of SSG formation: (1) mass transfer in a binary system, (2) stripping of a subgiant’s envelope, perhaps during a dynamical encounter, and (3) reduced luminosity due to magnetic fields that lower convective efficiency and produce large starspots. Using the stellar evolution code MESA, we develop evolutionary tracks for each of these hypotheses, and compare the expected stellar and orbital properties of these models with six known SSGs in the two open clusters M67 and NGC 6791. All three of these mechanisms can create stars or binary systems in the SSG CMD domain. We also calculate the frequency with which each of these mechanisms may create SSG systems, and find that the magnetic field hypothesis is expected to create SSGs with the highest frequency in open clusters. Mass transfer and envelope stripping have lower expected formation frequencies, but may nevertheless create occasional SSGs in open clusters. They may also be important mechanisms to create SSGs in higher mass globular clusters.

  5. X-RAY PROPERTIES OF INTERMEDIATE-MASS BLACK HOLES IN ACTIVE GALAXIES. II. X-RAY-BRIGHT ACCRETION AND POSSIBLE EVIDENCE FOR SLIM DISKS

    International Nuclear Information System (INIS)

    Desroches, Louis-Benoit; Greene, Jenny E.; Ho, Luis C.

    2009-01-01

    We present X-ray properties of optically selected intermediate-mass (∼10 5 -10 6 M sun ) black holes (BHs) in active galactic nuclei (AGNs), using data from the Chandra X-Ray Observatory. Our observations are a continuation of a pilot study by Greene and Ho. Of the eight objects observed, five are detected with X-ray luminosities in the range L 0.5-2keV = 10 41 -10 43 erg s -1 , consistent with the previously observed sample. Objects with enough counts to extract a spectrum are well fit by an absorbed power law. We continue to find a range of soft photon indices 1 s -Γ s , consistent with previous AGN studies, but generally flatter than other narrow-line Seyfert 1 active nuclei (NLS1s). The soft photon index correlates strongly with X-ray luminosity and Eddington ratio, but does not depend on BH mass. There is no justification for the inclusion of any additional components, such as a soft excess, although this may be a function of the relative inefficiency of detecting counts above 2 keV in these relatively shallow observations. As a whole, the X-ray-to-optical spectral slope α ox is flatter than in more massive systems, even other NLS1s. Only X-ray-selected NLS1s with very high Eddington ratios share a similar α ox . This is suggestive of a physical change in the accretion structure at low masses and at very high accretion rates, possibly due to the onset of slim disks. Although the detailed physical explanation for the X-ray loudness of these intermediate-mass BHs is not certain, it is very striking that targets selected on the basis of optical properties should be so distinctly offset in their broader spectral energy distributions.

  6. Evolution, Nucleosynthesis, and Yields of AGB Stars at Different Metallicities. III. Intermediate-mass Models, Revised Low-mass Models, and the ph-FRUITY Interface

    Science.gov (United States)

    Cristallo, S.; Straniero, O.; Piersanti, L.; Gobrecht, D.

    2015-08-01

    We present a new set of models for intermediate-mass asymptotic giant branch (AGB) stars (4.0, 5.0, and 6.0 M⊙) at different metallicities (-2.15 ≤ [Fe/H] ≤ +0.15). This set integrates the existing models for low-mass AGB stars (1.3 ≤ M/M⊙ ≤ 3.0) already included in the FRUITY database. We describe the physical and chemical evolution of the computed models from the main sequence up to the end of the AGB phase. Due to less efficient third dredge up episodes, models with large core masses show modest surface enhancements. This effect is due to the fact that the interpulse phases are short and, therefore, thermal pulses (TPs) are weak. Moreover, the high temperature at the base of the convective envelope prevents it from deeply penetrating the underlying radiative layers. Depending on the initial stellar mass, the heavy element nucleosynthesis is dominated by different neutron sources. In particular, the s-process distributions of the more massive models are dominated by the 22Ne(α,n)25Mg reaction, which is efficiently activated during TPs. At low metallicities, our models undergo hot bottom burning and hot third dredge up. We compare our theoretical final core masses to available white dwarf observations. Moreover, we quantify the influence intermediate-mass models have on the carbon star luminosity function. Finally, we present the upgrade of the FRUITY web interface, which now also includes the physical quantities of the TP-AGB phase for all of the models included in the database (ph-FRUITY).

  7. EVOLUTION, NUCLEOSYNTHESIS, AND YIELDS OF AGB STARS AT DIFFERENT METALLICITIES. III. INTERMEDIATE-MASS MODELS, REVISED LOW-MASS MODELS, AND THE pH-FRUITY INTERFACE

    Energy Technology Data Exchange (ETDEWEB)

    Cristallo, S.; Straniero, O.; Piersanti, L.; Gobrecht, D. [INAF-Osservatorio Astronomico di Collurania, I-64100 Teramo (Italy)

    2015-08-15

    We present a new set of models for intermediate-mass asymptotic giant branch (AGB) stars (4.0, 5.0, and 6.0 M{sub ⊙}) at different metallicities (−2.15 ≤ [Fe/H] ≤ +0.15). This set integrates the existing models for low-mass AGB stars (1.3 ≤ M/M{sub ⊙} ≤ 3.0) already included in the FRUITY database. We describe the physical and chemical evolution of the computed models from the main sequence up to the end of the AGB phase. Due to less efficient third dredge up episodes, models with large core masses show modest surface enhancements. This effect is due to the fact that the interpulse phases are short and, therefore, thermal pulses (TPs) are weak. Moreover, the high temperature at the base of the convective envelope prevents it from deeply penetrating the underlying radiative layers. Depending on the initial stellar mass, the heavy element nucleosynthesis is dominated by different neutron sources. In particular, the s-process distributions of the more massive models are dominated by the {sup 22}Ne(α,n){sup 25}Mg reaction, which is efficiently activated during TPs. At low metallicities, our models undergo hot bottom burning and hot third dredge up. We compare our theoretical final core masses to available white dwarf observations. Moreover, we quantify the influence intermediate-mass models have on the carbon star luminosity function. Finally, we present the upgrade of the FRUITY web interface, which now also includes the physical quantities of the TP-AGB phase for all of the models included in the database (ph-FRUITY)

  8. Resilience in IMS

    DEFF Research Database (Denmark)

    Kamyod, Chayapol; Nielsen, Rasmus Hjorth; Prasad, Neeli R.

    2012-01-01

    ) and supporting always on services. Therefore, not only Quality of Service (QoS) but also resilience is required. In this paper, we attempt to evaluate and analyze end-to-end reliability of the IMS system using a model proposed as a combination of Reliability Block Diagram (RBD) and Markov Reward Models (MRMs......Reliability evaluation of systems has been widely researched for improving system resilience especially in designing processes of a complex system. The convergence of different access networks is possible via IP Multimedia Subsystem (IMS) for development toward Next Generation Networks (NGNs......). The resilience of the IMS architecture is studied by applying 1:1 redundancy at different communication scenarios between end users within and across communication domains. The model analysis provides useful reliability characteristics of the system and can be further applied for system design processes....

  9. Delegation und Kooperation im Gesundheitswesen

    OpenAIRE

    Rosenau, Henning

    2010-01-01

    Delegation und Kooperation im Gesundheitswesen. - In: Tıpta işbirliği ve hukuksal sorunlar = Delegation und Kooperation im Gesundheitswesen / ed.: Hakan Hakeri ... - Samsun : Adalet, 2010. - S. 7-18

  10. Organisationsprobleme im Ökomarketing

    OpenAIRE

    Dienel, Wolfram

    2000-01-01

    Organisationsprobleme im Ökomarketing - eine transaktionskostentheoretische Analyse im Absatzkanal konventioneller Lebensmittelhandel Die im Vergleich zum großen Nachfragepotential zögerliche Entwicklung des Ökomarkts in Deutschland ist auf Organisationsprobleme zurückzuführen. Die Organisationsprobleme behindern insbesondere die großskalige Ökomarkterschließung über die konventionellen Supermarktketten, erschweren aber auch die Effizienzsteigerung im kleiner strukturierten alternativen N...

  11. IMS Application Developer's Handbook Creating and Deploying Innovative IMS Applications

    CERN Document Server

    Noldus, Rogier; Mulligan, Catherine; Fikouras, Ioannis; Ryde, Anders; Stille, Mats

    2011-01-01

    IMS Application Developer Handbook will give a hands-on view of exactly what needs to be done by IMS application developers to write an application and take it "live" on an operator's network. It will offer practical guidance on building innovative applications using the features and capabilities of the IMS network, show how the rapidly changing development environment is impacting on the business models employed in the industry and how existing network solutions can be moved towards IMS. The book will also elaborate on how IMS applies basic VoIP principles and techniques to realise a true mul

  12. New probe of dark-matter properties: gravitational waves from an intermediate-mass black hole embedded in a dark-matter minispike.

    Science.gov (United States)

    Eda, Kazunari; Itoh, Yousuke; Kuroyanagi, Sachiko; Silk, Joseph

    2013-05-31

    An intermediate-mass black hole (IMBH) may have a dark-matter (DM) minihalo around it and develop a spiky structure within less than a parsec from the IMBH. When a stellar mass object is captured by the minihalo, it eventually infalls into such an IMBH due to gravitational wave backreaction which in turn could be observed directly by future space-borne gravitational wave experiments such as eLISA and NGO. In this Letter, we show that the gravitational wave (GW) detectability strongly depends on the radial profile of the DM distribution. So if the GW is detected, the power index, that is, the DM density distribution, would be determined very accurately. The DM density distribution obtained would make it clear how the IMBH has evolved from a seed black hole and whether the IMBH has experienced major mergers in the past. Unlike the γ-ray observations of DM annihilation, GW is just sensitive to the radial profile of the DM distribution and even to noninteracting DM. Hence, the effect we demonstrate here can be used as a new and powerful probe into DM properties.

  13. Sexting im Schulumfeld

    Directory of Open Access Journals (Sweden)

    Barbara Buchegger

    2015-03-01

    Full Text Available Wir wollten es einfach wissen. Wie steht es nun mit diesem "Sexting" – also der Übermittlung von Nacktaufnahmen, die Jugendliche untereinander teilen? Stimmt unser Eindruck aus den Workshops in Schulen, dass es bereits ein "übliches Verhalten" der Jugendlichen geworden ist? Saferinternet.at hat im November/Dezember 2014 eine Studie durch das Institut für Jugendkulturforschung rund um das Thema "Sexting" in Auftrag gegeben.

  14. The distribution of stars around the Milky Way's central black hole. II. Diffuse light from sub-giants and dwarfs

    Science.gov (United States)

    Schödel, R.; Gallego-Cano, E.; Dong, H.; Nogueras-Lara, F.; Gallego-Calvente, A. T.; Amaro-Seoane, P.; Baumgardt, H.

    2018-01-01

    Context. This is the second of three papers that search for the predicted stellar cusp around the Milky Way's central black hole, Sagittarius A*, with new data and methods. Aims: We aim to infer the distribution of the faintest stellar population currently accessible through observations around Sagittarius A*. Methods: We used adaptive optics assisted high angular resolution images obtained with the NACO instrument at the ESO VLT. Through optimised PSF fitting we removed the light from all detected stars above a given magnitude limit. Subsequently we analysed the remaining, diffuse light density. Systematic uncertainties were constrained by the use of data from different observing epochs and obtained with different filters. We show that it is necessary to correct for the diffuse emission from the mini-spiral, which would otherwise lead to a systematically biased light density profile. We used a Paschen α map obtained with the Hubble Space Telescope for this purpose. Results: The azimuthally averaged diffuse surface light density profile within a projected distance of R ≲ 0.5 pc from Sagittarius A* can be described consistently by a single power law with an exponent of Γ = 0.26 ± 0.02stat ± 0.05sys, similar to what has been found for the surface number density of faint stars in Paper I. Conclusions: The analysed diffuse light arises from sub-giant and main-sequence stars with Ks ≈ 19-22 with masses of 0.8-1.5 M⊙. These stars can be old enough to be dynamically relaxed. The observed power-law profile and its slope are consistent with the existence of a relaxed stellar cusp around the Milky Way's central black hole. We find that a Nuker law provides an adequate description of the nuclear cluster's intrinsic shape (assuming spherical symmetry). The 3D power-law slope near Sgr A* is γ = 1.13 ± 0.03model ± 0.05sys. The stellar density decreases more steeply beyond a break radius of about 3 pc, which corresponds roughly to the radius of influence of the

  15. Behavior of Abundances in Chemically Peculiar Dwarf and Subgiant A-Type Stars: HD 23193 and HD 170920

    Science.gov (United States)

    Kılıçoğlu, Tolgahan; Çalışkan, Şeyma; Ünal, Kübraözge

    2018-01-01

    To understand the origin of the abundance peculiarities of non-magnetic A-type stars, we present the first detailed chemical abundance analysis of a metallic line star HD 23193 (A2m) and an A-type subgiant HD 170920 (A5), which could have been a HgMn star on the main sequence. Our analysis is based on medium (R ∼ 14,000) and high (R ∼ 40,000) resolution spectroscopic data of the stars. The abundances of 18 elements are derived: C, O, Na, Mg, Al, Si, S, Ca, Sc, Ti, Cr, Mn, Fe, Ni, Zn, Sr, Y, and Ba. The masses of HD 23193 and HD 170920 are estimated from evolutionary tracks as 2.3 ± 0.1 M ⊙ and 2.9 ± 0.1 M ⊙. The ages are found to be 635 ± 33 Myr for HD 23193 and 480 ± 50 Myr for HD 170920 using isochrones. The abundance pattern of HD 23193 shows deviations from solar values in the iron-peak elements and indicates remarkable overabundances of Sr (1.16), Y (1.03), and Ba (1.24) with respect to the solar abundances. We compare the derived abundances of this moderately rotating (v\\sin i =37.5 km s‑1) Am star to the theoretical chemical evolution models including rotational mixing. The theoretically predicted abundances resemble our derived abundance pattern, except for a few elements (Si and Cr). For HD 170920, we find nearly solar abundances, except for C (‑0.43), S (0.16), Ti (0.15), Ni (0.16), Zn (0.41), Y (0.57), and Ba (0.97). Its low rotational velocity (v\\sin i=14.5 km s‑1), reduced carbon abundance, and enhanced heavy element abundances suggest that the star is most likely an evolved HgMn star. Based on observations made at the TÜBITAK National Observatory (Program ID 14BRTT150–671), and the Ankara University Observatory, Turkey.

  16. Intermediate-mass black holes in dwarf galaxies out to redshift ˜ 2.4 in the Chandra COSMOS Legacy Survey

    Science.gov (United States)

    Mezcua, M.; Civano, F.; Marchesi, S.; Suh, H.; Fabbiano, G.; Volonteri, M.

    2018-05-01

    We present a sample of 40 AGN in dwarf galaxies at redshifts z ≲ 2.4. The galaxies are drawn from the Chandra COSMOS-Legacy survey as having stellar masses 107 ≤ M* ≤ 3 × 109 M⊙. Most of the dwarf galaxies are star-forming. After removing the contribution from star formation to the X-ray emission, the AGN luminosities of the 40 dwarf galaxies are in the range L0.5-10keV ˜ 1039 - 1044 erg s-1. With 12 sources at z > 0.5, our sample constitutes the highest-redshift discovery of AGN in dwarf galaxies. The record-holder is cid_1192, at z = 2.39 and with L0.5-10keV ˜ 1044 erg s-1. One of the dwarf galaxies has M* = 6.6 × 107 M⊙ and is the least massive galaxy found so far to host an AGN. All the AGN are of type 2 and consistent with hosting intermediate-mass black holes (BHs) with masses ˜104 - 105 M⊙ and typical Eddington ratios >1%. We also study the evolution, corrected for completeness, of AGN fraction with stellar mass, X-ray luminosity, and redshift in dwarf galaxies out to z = 0.7. We find that the AGN fraction for 109 < M* ≤ 3 × 109 M⊙ and LX ˜ 1041 - 1042 erg s-1 is ˜0.4% for z ≤ 0.3 and that it decreases with X-ray luminosity and decreasing stellar mass. Unlike massive galaxies, the AGN fraction seems to decrease with redshift, suggesting that AGN in dwarf galaxies evolve differently than those in high-mass galaxies. Mindful of potential caveats, the results seem to favor a direct collapse formation mechanism for the seed BHs in the early Universe.

  17. IMS applications analysis

    Energy Technology Data Exchange (ETDEWEB)

    RODACY,PHILIP J.; REBER,STEPHEN D.; SIMONSON,ROBERT J.; HANCE,BRADLEY G.

    2000-03-01

    This report examines the market potential of a miniature, hand-held Ion Mobility Spectrometer. Military and civilian markets are discussed, as well as applications in a variety of diverse fields. The strengths and weaknesses of competing technologies are discussed. An extensive Ion Mobility Spectrometry (IMS) bibliography is included. The conclusions drawn from this study are: (1) There are a number of competing technologies that are capable of detecting explosives, drugs, biological, or chemical agents. The IMS system currently represents the best available compromise regarding sensitivity, specificity, and portability. (2) The military market is not as large as the commercial market, but the military services are more likely to invest R and D funds in the system. (3) Military applications should be addressed before commercial applications are addressed. (4) There is potentially a large commercial market for rugged, hand-held Ion Mobility Spectrometer systems. Commercial users typically do not invest R and D funds in this type of equipment rather, they wait for off-the-shelf availability.

  18. THE M BH-L SPHEROID RELATION AT HIGH AND LOW MASSES, THE QUADRATIC GROWTH OF BLACK HOLES, AND INTERMEDIATE-MASS BLACK HOLE CANDIDATES

    International Nuclear Information System (INIS)

    Graham, Alister W.; Scott, Nicholas

    2013-01-01

    From a sample of 72 galaxies with reliable supermassive black hole masses M bh , we derive the M bh -(host spheroid luminosity, L) relation for (1) the subsample of 24 core-Sérsic galaxies with partially depleted cores, and (2) the remaining subsample of 48 Sérsic galaxies. Using K s -band Two Micron All Sky Survey data, we find the near-linear relation M bh ∝L 1.10±0.20 K s for the core-Sérsic spheroids thought to be built in additive dry merger events, while we find the relation M bh ∝L 2.73±0.55 K s for the Sérsic spheroids built from gas-rich processes. After converting literature B-band disk galaxy magnitudes into inclination- and dust-corrected bulge magnitudes, via a useful new equation presented herein, we obtain a similar result. Unlike with the M bh -(velocity dispersion) diagram, which is also updated here using the same galaxy sample, it remains unknown whether barred and non-barred Sérsic galaxies are offset from each other in the M bh -L diagram. While black hole feedback has typically been invoked to explain what was previously thought to be a nearly constant M bh /M Spheroid mass ratio of ∼0.2%, we advocate that the near-linear M bh -L and M bh -M Spheroid relations observed at high masses may have instead arisen largely from the additive dry merging of galaxies. We argue that feedback results in a dramatically different scaling relation, such that black hole mass scales roughly quadratically with the spheroid mass in Sérsic galaxies. We therefore introduce a revised cold-gas 'quasar' mode feeding equation for semi-analytical models to reflect what we dub the quadratic growth of black holes in Sérsic galaxies built amidst gas-rich processes. Finally, we use our new Sérsic M bh -L equations to predict the masses of candidate intermediate mass black holes in almost 50 low-luminosity spheroids containing active galactic nuclei, finding many masses between that of stellar mass black holes and supermassive black holes.

  19. N-body modeling of globular clusters: detecting intermediate-mass black holes by non-equipartition in HST proper motions

    Science.gov (United States)

    Trenti, Michele

    2010-09-01

    Intermediate Mass Black Holes {IMBHs} are objects of considerable astrophysical significance. They have been invoked as possible remnants of Population III stars, precursors of supermassive black holes, sources of ultra-luminous X-ray emission, and emitters of gravitational waves. The centers of globular clusters, where they may have formed through runaway collapse of massive stars, may be our best chance of detecting them. HST studies of velocity dispersions have provided tentative evidence, but the measurements are difficult and the results have been disputed. It is thus important to explore and develop additional indicators of the presence of an IMBH in these systems. In a Cycle 16 theory project we focused on the fingerprints of an IMBH derived from HST photometry. We showed that an IMBH leads to a detectable quenching of mass segregation. Analysis of HST-ACS data for NGC 2298 validated the method, and ruled out an IMBH of more than 300 solar masses. We propose here to extend the search for IMBH signatures from photometry to kinematics. The velocity dispersion of stars in collisionally relaxed stellar systems such as globular clusters scales with main sequence mass as sigma m^alpha. A value alpha = -0.5 corresponds to equipartition. Mass-dependent kinematics can now be measured from HST proper motion studies {e.g., alpha = -0.21 for Omega Cen}. Preliminary analysis shows that the value of alpha can be used as indicator of the presence of an IMBH. In fact, the quenching of mass segregation is a result of the degree of equipartition that the system attains. However, detailed numerical simulations are required to quantify this. Therefore we propose {a} to carry out a new, larger set of realistic N-body simulations of star clusters with IMBHs, primordial binaries and stellar evolution to predict in detail the expected kinematic signatures and {b} to compare these predictions to datasets that are {becoming} available. Considerable HST resources have been invested in

  20. Transiting exoplanets from the CoRoT space mission. XXIII. CoRoT-21b: a doomed large Jupiter around a faint subgiant star

    DEFF Research Database (Denmark)

    Pätzold, M.; Endl, M.; Csizmadia, Sz.

    2012-01-01

    -up observations, however, were performed mainly by the 10-m Keck telescope in January 2010. The companion CoRoT-21b is a Jupiter-like planet of 2.26 ± 0.33 Jupiter masses and 1.30 ± 0.14 Jupiter radii in an circular orbit of semi-major axis 0.0417 ± 0.0011 AU and an orbital period of 2.72474 ± 0.00014 days....... The planetary bulk density is (1.36   ±   0.48) × 103 kg m-3, very similar to the bulk density of Jupiter, and follows an M1/3 − R relation like Jupiter. The F8IV star is a sub-giant star of 1.29 ± 0.09 solar masses and 1.95 ± 0.2 solar radii. The star and the planet exchange extremetidal forces that will lead...

  1. Jung und Alt im Dialog

    Directory of Open Access Journals (Sweden)

    Caroline Baetge

    2012-04-01

    Full Text Available Rezension zu: Kupser, Thomas, und Ida Pöttinger, Hrsg. 2011. Mediale Brücken: Generationen im Dialog durch aktive Medienarbeit. Gesellschaft - Altern - Medien 3. München: kopaed.

  2. Gesundheit und Pflege im Alter

    OpenAIRE

    Pfaff, Martin

    1989-01-01

    Gesundheit und Pflege im Alter : d. Gesundheitsreformgesetz (GRG) ; Möglichkeiten, Grenzen u. weitere Vorschläge / Martin Pfaff ; Klaus Deimer. - In: Expertengespräch "Pflege in der Familie". - Augsburg, 1989. - Getr. Zählung

  3. Resilience of the IMS system

    DEFF Research Database (Denmark)

    Kamyod, Chayapol; Nielsen, Rasmus Hjorth; Prasad, Neeli R.

    2014-01-01

    The paper focuses on end-to-end resilience analysis of the IMS based network through the principal resilience parameters by using OPNET. The resilience behaviours of communication across multiple IMS domains are investigated at different communication scenarios and compared with previous state......-of-the-art. Moreover, the resilience effects when adding a redundancy of the S-CSCF unit are examined. The results disclose interesting resilience behaviours for long distance communications....

  4. KEPLER-21b: A 1.6 R{sub Earth} PLANET TRANSITING THE BRIGHT OSCILLATING F SUBGIANT STAR HD 179070

    Energy Technology Data Exchange (ETDEWEB)

    Howell, Steve B. [National Optical Astronomy Observatory, Tucson, AZ 85719 (United States); Rowe, Jason F.; Bryson, Stephen T. [NASA Ames Research Center, Moffett Field, CA 94035 (United States); Quinn, Samuel N. [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Marcy, Geoffrey W.; Isaacson, Howard [Department of Astronomy, University of California, Berkeley, CA 94720 (United States); Ciardi, David R. [NASA Exoplanet Science Institute/Caltech, Pasadena, CA 91125 (United States); Chaplin, William J.; Elsworth, Yvonne [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom); Metcalfe, Travis S. [High Altitude Observatory and Scientific Computing Division, National Center for Atmospheric Research, Boulder, CO 80307 (United States); Monteiro, Mario J. P. F. G. [Centro de Astrofisica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto (Portugal); Appourchaux, Thierry [Institut d' Astrophysique Spatiale, Universite Paris XI-CNRS (UMR8617), Batiment 121, 91405 Orsay Cedex (France); Basu, Sarbani [Department of Astronomy, Yale University, New Haven, CT 06520-8101 (United States); Creevey, Orlagh L. [Departamento de Astrofisica, Universidad de La Laguna, E-38206 La Laguna, Tenerife (Spain); Gilliland, Ronald L. [Space Telescope Science Institute, Baltimore, MD 21218 (United States); Quirion, Pierre-Olivier [Canadian Space Agency, 6767 Boulevard de l' Aeroport, Saint-Hubert, QC, J3Y 8Y9 (Canada); Stello, Denis [Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006 (Australia); Kjeldsen, Hans; Christensen-Dalsgaard, Joergen [Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark); Garcia, Rafael A. [Laboratoire AIM, CEA/DSM-CNRS-Universite Paris Diderot-IRFU/SAp, 91191 Gif-sur-Yvette Cedex (France); and others

    2012-02-20

    We present Kepler observations of the bright (V = 8.3), oscillating star HD 179070. The observations show transit-like events which reveal that the star is orbited every 2.8 days by a small, 1.6 R{sub Earth} object. Seismic studies of HD 179070 using short cadence Kepler observations show that HD 179070 has a frequency-power spectrum consistent with solar-like oscillations that are acoustic p-modes. Asteroseismic analysis provides robust values for the mass and radius of HD 179070, 1.34 {+-} 0.06 M{sub Sun} and 1.86 {+-} 0.04 R{sub Sun }, respectively, as well as yielding an age of 2.84 {+-} 0.34 Gyr for this F5 subgiant. Together with ground-based follow-up observations, analysis of the Kepler light curves and image data, and blend scenario models, we conservatively show at the >99.7% confidence level (3{sigma}) that the transit event is caused by a 1.64 {+-} 0.04 R{sub Earth} exoplanet in a 2.785755 {+-} 0.000032 day orbit. The exoplanet is only 0.04 AU away from the star and our spectroscopic observations provide an upper limit to its mass of {approx}10 M{sub Earth} (2{sigma}). HD 179070 is the brightest exoplanet host star yet discovered by Kepler.

  5. Individualisierte Produkte im Fokus der intergrierten Produktentwicklung

    OpenAIRE

    Baumberger, C.;Gahr, A.

    2017-01-01

    Individualisierte Produkte stellen neue Herausforderungen an die Produktentwicklung – vornehmlich im Bereich der Produktstrukturplanung, der kundenindividuellen Produktadaption und dem Zielkostenmanagement. Diese Themen werden am Lehrstuhl für Produktentwicklung im Rahmen des Sonderforschungsbereiches 582 behandelt.

  6. Application of Hadamard transform in IMS

    International Nuclear Information System (INIS)

    Sha Miaomiao; Liu Weihao; Chen Yong; Jiang Dazhen

    2008-01-01

    Hadamard transform can improve the SNR by increasing the ion duty cycle in IMS. In this paper, the ion spectral signals were processed by Hadamard transform based on the IMS detector hardware platform. The results showed that Hadamard transform can greatly improve the SNR of the IMS detector in contrast with traditional method. (authors)

  7. Advanced Interval Management (IM) Concepts of Operations

    Science.gov (United States)

    Barmore, Bryan E.; Ahmad, Nash'at N.; Underwood, Matthew C.

    2014-01-01

    This document provides a high-level description of several advanced IM operations that NASA is considering for future research and development. It covers two versions of IM-CSPO and IM with Wake Mitigation. These are preliminary descriptions to support an initial benefits analysis

  8. Argumentellipse in der "weichen" Nachricht im Deutschen und im Slowenischen

    Directory of Open Access Journals (Sweden)

    Uršula Krevs

    1998-12-01

    Full Text Available Argumentellipsen werden in der sprachlichen Kommunikation ohne weiteres akzeptiert, obwohl sie allenfalls in gewissem Sinne wegen ihrer Elliptizität abweichend wirken. Im folgenden interessiert uns, wie die Argumentellipse als syntaktische Entität in den Text eingebettet wird und welche Funktionen sie ausübt. Unsere Aufmerksamkeit gilt bier der Textsorte "weiche" Nachricht, die als Abweichung des Grundmusters gilt. Um im Sprachenpaar Deutsch-Slowenisch die in dieser Textsorte realisierten Argumentellipsen vergleichen zu können, wurde die Homogenität in der Thematik angestrebt und die Texte aus dem gleichen Kommunikationsbereich gewählt. So wurden die Korpora zwei Zeitschriften, die sich mit der gleichen Sportart beschäftigen, entnommen: der deutschen Zeitschrift "Rotpunkt" und der slowenischen Zeitschrift  "Grif '.

  9. Lithium in the active sub-giant HD123351. A quantitative analysis with 3D and 1D model atmospheres using different observed spectra

    Science.gov (United States)

    Mott, A.; Steffen, M.; Caffau, E.; Strassmeier, K. G.

    Current 3D hydrodynamical model atmosphere simulations together with non-LTE spectrum synthesis calculations permit to determine reliable atomic and in particular isotopic chemical abundances. Although this approach is computationally time demanding, it became feasible in studying lithium in stellar spectra. In the literature not much is known about the presence of the more fragile {6Li} isotope in evolved metal-rich objects. In this case the analysis is complicated by the lack of a suitable list of atomic and molecular lines in the spectral region of the lithium resonance line at 670.8 nm. Here we present a spectroscopic comparative analysis of the Li doublet region of HD 123351, an active sub-giant star of solar metallicity. We fit the Li profile in three observed spectra characterized by different qualities: two very-high resolution spectra (Gecko@CFHT, R=120 000, SNR=400 and PEPSI@LBT, R=150 000, SNR=663) and a high-resolution SOPHIE@OHP spectrum (R=40 000, SNR=300). We adopt a set of model atmospheres, both 3D and 1D, having different stellar parameters (T_{eff} and log g). The 3D models are taken from the CIFIST grid of COBOLD model atmospheres and departures from LTE are considered for the lithium components. For the blends other than the lithium in this wavelength region we adopt the linelist of \\citet{melendez12}. We find consistent results for all three observations and an overall good fit with the selected list of atomic and molecular lines, indicating a high {6Li} content. The presence of {6Li} is not expected in cool stellar atmospheres. Its detection is of crucial importance for understanding mixing processes in stars and external lithium production mechanisms, possibly related to stellar activity or planetray accretion of {6Li}-rich material.

  10. Chemical Abundances of Main-sequence, Turnoff, Subgiant, and Red Giant Stars from APOGEE Spectra. I. Signatures of Diffusion in the Open Cluster M67

    Science.gov (United States)

    Souto, Diogo; Cunha, Katia; Smith, Verne V.; Allende Prieto, C.; García-Hernández, D. A.; Pinsonneault, Marc; Holzer, Parker; Frinchaboy, Peter; Holtzman, Jon; Johnson, J. A.; Jönsson, Henrik; Majewski, Steven R.; Shetrone, Matthew; Sobeck, Jennifer; Stringfellow, Guy; Teske, Johanna; Zamora, Olga; Zasowski, Gail; Carrera, Ricardo; Stassun, Keivan; Fernandez-Trincado, J. G.; Villanova, Sandro; Minniti, Dante; Santana, Felipe

    2018-04-01

    Detailed chemical abundance distributions for 14 elements are derived for eight high-probability stellar members of the solar metallicity old open cluster M67 with an age of ∼4 Gyr. The eight stars consist of four pairs, with each pair occupying a distinct phase of stellar evolution: two G dwarfs, two turnoff stars, two G subgiants, and two red clump (RC) K giants. The abundance analysis uses near-IR high-resolution spectra (λ1.5–1.7 μm) from the Apache Point Observatory Galactic Evolution Experiment survey and derives abundances for C, N, O, Na, Mg, Al, Si, K, Ca, Ti, V, Cr, Mn, and Fe. Our derived stellar parameters and metallicity for 2M08510076+1153115 suggest that this star is a solar twin, exhibiting abundance differences relative to the Sun of ≤0.04 dex for all elements. Chemical homogeneity is found within each class of stars (∼0.02 dex), while significant abundance variations (∼0.05–0.20 dex) are found across the different evolutionary phases; the turnoff stars typically have the lowest abundances, while the RCs tend to have the largest. Non-LTE corrections to the LTE-derived abundances are unlikely to explain the differences. A detailed comparison of the derived Fe, Mg, Si, and Ca abundances with recently published surface abundances from stellar models that include chemical diffusion provides a good match between the observed and predicted abundances as a function of stellar mass. Such agreement would indicate the detection of chemical diffusion processes in the stellar members of M67.

  11. RETIRED A STARS AND THEIR COMPANIONS. VI. A PAIR OF INTERACTING EXOPLANET PAIRS AROUND THE SUBGIANTS 24 SEXTANIS AND HD 200964

    International Nuclear Information System (INIS)

    Johnson, John Asher; Payne, Matthew; Ford, Eric B.; Howard, Andrew W.; Marcy, Geoffrey W.; Clubb, Kelsey I.; Bowler, Brendan P.; Henry, Gregory W.; Fischer, Debra A.; Brewer, John M.; Schwab, Christian; Reffert, Sabine; Lowe, Thomas B.

    2011-01-01

    We report radial velocity (RV) measurements of the G-type subgiants 24 Sextanis (= HD 90043) and HD 200964. Both are massive, evolved stars that exhibit periodic variations due to the presence of a pair of Jovian planets. Photometric monitoring with the T12 0.80 m APT at Fairborn Observatory demonstrates both stars to be constant in brightness to ≤0.002 mag, thus strengthening the planetary interpretation of the RV variations. Based on our dynamical analysis of the RV time series, 24 Sex b, c have orbital periods of 452.8 days and 883.0 days, corresponding to semimajor axes 1.333 AU and 2.08 AU, and minimum masses 1.99 M Jup and 0.86 M Jup , assuming a stellar mass M * = 1.54 M sun . HD 200964 b, c have orbital periods of 613.8 days and 825.0 days, corresponding to semimajor axes 1.601 AU and 1.95 AU, and minimum masses 1.99 M Jup and 0.90 M Jup , assuming M * = 1.44 M sun . We also carry out dynamical simulations to properly account for gravitational interactions between the planets. Most, if not all, of the dynamically stable solutions include crossing orbits, suggesting that each system is locked in a mean-motion resonance that prevents close encounters and provides long-term stability. The planets in the 24 Sex system likely have a period ratio near 2:1, while the HD 200964 system is even more tightly packed with a period ratio close to 4:3. However, we caution that further RV observations and more detailed dynamical modeling will be required to provide definitive and unique orbital solutions for both cases, and to determine whether the two systems are truly resonant.

  12. Using IMS VDEX in Agrega

    Directory of Open Access Journals (Sweden)

    Jose Manuel Canabal

    2009-03-01

    Full Text Available An essential element in a learning object repository is the meta-information associated with the resources housed by the repository, as this is what enables the objects to be retrieved. In many cases, the meta-information which is described consists of the classification of a resource in relation to a taxonomy or thesaurus. Agrega is a network of learning object repositories in which an LOM profile, called LOM-ES, has been used to label the objects. Part of the meta-information described corresponds to the classification of the object with respect to a group of taxonomies and a thesaurus, which have had to be described using the ims vdex standard to enable them to be managed from the federation nodes. This article describes the way in which ims vdex has been used in order to create this description and how these metadata instances are managed.

  13. Professionalisierung und Doping im Sport

    OpenAIRE

    Wüterich, Christoph

    2004-01-01

    Der Beitrag untersucht Zusammenhänge zwischen der zunehmenden Professionalisierung des Sports und dem Anstieg von Dopingvergehen. Er zeigt, dass im historischen Vergleich beide Phänomene nicht neu sind, dass sich die Probleme aufgrund der steigenden Bedeutung des Leistungssports aber zugespitzt haben. Ausgehend von einer juristischen und sozioökonomischen Analyse der Anreize zu Doping werden Lösungsvorschläge entwickelt. The author analyzes the interdependencies between a growing commercia...

  14. The IMS Software Integration Platform

    Science.gov (United States)

    1993-04-12

    products to incorporate all data shared by the IMS applications. Some entities (time-series, images, a algorithm -specific parameters) must be managed...dbwhoanii, dbcancel Transaction Management: dbcommit, dbrollback Key Counter Assignment: dbgetcounter String Handling: cstr ~to~pad, pad-to- cstr Error...increment *value; String Maniputation: int cstr topad (array, string, arraylength) char *array, *string; int arrayjlength; int pad tocstr (string

  15. Suchverhalten im Web: Empirische Ergebnisse

    OpenAIRE

    Schmidt-Mänz, Nadine

    2005-01-01

    Nadine Schmidt-Mänz vom Institut für Entscheidungstheorie u. Unternehmensforschung, Universität Karlsruhe, berichtete über „Suchverhalten im Web: Empirische Ergebnisse“. Rund 6000 Benutzer von Suchmaschinen füllten den von ihr hergestellten Online-Fragebogen aus. Einige ihrer Erkenntnisse: Als Suchmaschine wurde mit 91,3 % Google benutzt. Die Monopolstellung von Google war den Suchenden nicht bewußt. Einer der Schlüsse der Referentin: Es mangelt nicht an Suchmaschinen, sondern an der „Weitere...

  16. The magnetic strip(s) in the advanced phases of stellar evolution. Theoretical convective turnover timescale and Rossby number for low- and intermediate-mass stars up to the AGB at various metallicities

    Science.gov (United States)

    Charbonnel, C.; Decressin, T.; Lagarde, N.; Gallet, F.; Palacios, A.; Aurière, M.; Konstantinova-Antova, R.; Mathis, S.; Anderson, R. I.; Dintrans, B.

    2017-09-01

    Context. Recent spectropolarimetric observations of otherwise ordinary (in terms e.g. of surface rotation and chemical properties) G, K, and M giants have revealed localized magnetic strips in the Hertzsprung-Russell diagram coincident with the regions where the first dredge-up and core helium burning occur. Aims: We seek to understand the origin of magnetic fields in such late-type giant stars, which is currently unexplained. In analogy with late-type dwarf stars, we focus primarily on parameters known to influence the generation of magnetic fields in the outer convective envelope. Methods: We compute the classical dynamo parameters along the evolutionary tracks of low- and intermediate-mass stars at various metallicities using stellar models that have been extensively tested by spectroscopic and asteroseismic observations. Specifically, these include convective turnover timescales and convective Rossby numbers, computed from the pre-main sequence (PMS) to the tip of the red giant branch (RGB) or the early asymptotic giant branch (AGB) phase. To investigate the effects of the very extended outer convective envelope, we compute these parameters both for the entire convective envelope and locally, that is, at different depths within the envelope. We also compute the turnover timescales and corresponding Rossby numbers for the convective cores of intermediate-mass stars on the main sequence. Results: Our models show that the Rossby number of the convective envelope becomes lower than unity in the well-delimited locations of the Hertzsprung-Russell diagram where magnetic fields have indeed been detected. Conclusions: We show that α - Ω dynamo processes might not be continuously operating, but that they are favored in the stellar convective envelope at two specific moments along the evolution tracks, that is, during the first dredge-up at the base of the RGB and during central helium burning in the helium-burning phase and early-AGB. This general behavior can explain

  17. Digital Medien im Naturwissenschaftlichen Unterricht

    CERN Document Server

    Meßinger-Koppelt, Jenny

    2014-01-01

    „Morgens, 8 Uhr: Kurz vor der Schultür werden noch die neuesten Posts auf Facebook geliked, ein Selfie in die Whats-App-Gruppe hochgeladen oder auf YouTube noch ein #LOL-Video gestreamed. Dann klingelt es und die Digital Natives greifen wieder zu Stift, Papier und werden frontal mit Fakten gefüttert“ (A. Spang). Für Schüler sind Internet, Smartphone und Tablet-PC heute selbstverständlicher Teil ihrer Lernwelt. Und auch die Alltags- und Berufswelt ist ohne Informationstechnologien nicht mehr vorstellbar. Doch was bedeutet das für den Schulunterricht, insbesondere für die techniknahen Naturwissenschaften? Wie gelingt im Schulalltag die Balance zwischen Kreidezeit und interaktivem Whiteboard nach mittlerweile 30 Jahren Erfahrung mit Schulcomputern? Der vorliegende Sammelband präsentiert zahlreiche Praxisbeispiele aus dem Schulalltag zum sinnvollen Einsatz digitaler Medien im Biologie-, Chemie- und Physik-Unterricht sowie den aktuellen Stand der fachdidaktischen Forschung. Zu Wort kommen Hochschullehr...

  18. IMS Learning Design Frequently Asked Questions

    NARCIS (Netherlands)

    Tattersall, Colin; Manderveld, Jocelyn; Hummel, Hans; Sloep, Peter; Koper, Rob; De Vries, Fred

    2004-01-01

    This list of frequently asked questions was composed on the basis of questions asked of the Educational Technology Expertise Centrum. The questions addessed are: Where can I find the IMS Learning Design Specification? What is meant by the phrase “Learning Design”? What is the IMS LD Specification

  19. ALMA Images of the Host Cloud of the Intermediate-mass Black Hole Candidate CO‑0.40–0.22*: No Evidence for Cloud–Black Hole Interaction, but Evidence for a Cloud–Cloud Collision

    Science.gov (United States)

    Tanaka, Kunihiko

    2018-06-01

    This paper reports a reanalysis of archival ALMA data of the high velocity(-width) compact cloud CO‑0.40–0.22, which has recently been hypothesized to host an intermediate-mass black hole (IMBH). If beam-smearing effects, difference in beam sizes among frequency bands, and Doppler shift due to the motion of the Earth are considered accurately, none of the features reported as evidence for an IMBH in previous studies are confirmed in the reanalyzed ALMA images. Instead, through analysis of the position–velocity structure of the HCN J = 3–2 data cube, we have found kinematics typical of a cloud–cloud collision (CCC), namely, two distinct velocity components bridged by broad emission features with elevated temperatures and/or densities. One velocity component has a straight filamentary shape with approximately constant centroid velocities along its length but with a steep, V-shaped velocity gradient across its width. This contradicts the IMBH scenario but is consistent with a collision between two dissimilar-sized clouds. From a non-LTE analysis of the multitransition methanol lines, the volume density of the post-shock gas has been measured to be ≳106 cm‑3, indicating that the CCC shock can compress gas in a short timescale to densities typical of star-forming regions. Evidence for star formation has not been found, possibly because the cloud is in an early phase of CCC-triggered star formation or because the collision is nonproductive.

  20. VERY-LOW-MASS STELLAR AND SUBSTELLAR COMPANIONS TO SOLAR-LIKE STARS FROM MARVELS. III. A SHORT-PERIOD BROWN DWARF CANDIDATE AROUND AN ACTIVE G0IV SUBGIANT

    Energy Technology Data Exchange (ETDEWEB)

    Ma Bo; Ge Jian; De Lee, Nathan; Fleming, Scott W.; Lee, Brian L.; Wang Ji [Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL 32611-2055 (United States); Barnes, Rory; Agol, Eric [Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195-1580 (United States); Crepp, Justin R. [Department of Physics, University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, IN 46556 (United States); Dutra-Ferreira, Leticia; Porto de Mello, G. F. [Observatorio do Valongo, Universidade Federal do Rio de Janeiro, Ladeira do Pedro Antonio, 43, CEP: 20080-090, Rio de Janeiro, RJ (Brazil); Esposito, Massimiliano; Femenia, Bruno; Gonzalez Hernandez, Jonay I. [Instituto de Astrofisica de Canarias, C/Via Lctea S/N, E-38200 La Laguna (Spain); Gaudi, B. Scott [Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210 (United States); Ghezzi, Luan [Laboratorio Interinstitucional de e-Astronomia (LIneA), Rio de Janeiro, RJ 20921-400 (Brazil); Hebb, Leslie; Stassun, Keivan G. [Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235 (United States); Wisniewski, John P. [Homer L Dodge Department of Physics and Astronomy, University of Oklahoma, 440 W Brooks St, Norman, OK 73019 (United States); Bizyaev, Dmitry, E-mail: boma@astro.ufl.edu [Apache Point Observatory, P.O. Box 59, Sunspot, NM 88349-0059 (United States); and others

    2013-01-01

    We present an eccentric, short-period brown dwarf candidate orbiting the active, slightly evolved subgiant star TYC 2087-00255-1, which has effective temperature T{sub eff} = 5903 {+-} 42 K, surface gravity log (g) = 4.07 {+-} 0.16 (cgs), and metallicity [Fe/H] = -0.23 {+-} 0.07. This candidate was discovered using data from the first two years of the Multi-object APO Radial Velocity Exoplanets Large-area Survey, which is part of the third phase of Sloan Digital Sky Survey. From our 38 radial velocity measurements spread over a two-year time baseline, we derive a Keplerian orbital fit with semi-amplitude K = 3.571 {+-} 0.041 km s{sup -1}, period P = 9.0090 {+-} 0.0004 days, and eccentricity e = 0.226 {+-} 0.011. Adopting a mass of 1.16 {+-} 0.11 M{sub Sun} for the subgiant host star, we infer that the companion has a minimum mass of 40.0 {+-} 2.5 M{sub Jup}. Assuming an edge-on orbit, the semimajor axis is 0.090 {+-} 0.003 AU. The host star is photometrically variable at the {approx}1% level with a period of {approx}13.16 {+-} 0.01 days, indicating that the host star spin and companion orbit are not synchronized. Through adaptive optics imaging we also found a point source 643 {+-} 10 mas away from TYC 2087-00255-1, which would have a mass of 0.13 M{sub Sun} if it is physically associated with TYC 2087-00255-1 and has the same age. Future proper motion observation should be able to resolve if this tertiary object is physically associated with TYC 2087-00255-1 and make TYC 2087-00255-1 a triple body system. Core Ca II H and K line emission indicate that the host is chromospherically active, at a level that is consistent with the inferred spin period and measured v{sub rot}sin i, but unusual for a subgiant of this T{sub eff}. This activity could be explained by ongoing tidal spin-up of the host star by the companion.

  1. E2eUberIM

    DEFF Research Database (Denmark)

    Wac, Katarzyna; Cummings, Mark; Dey, Jayanta

    2016-01-01

    , high-quality services, we propose an innovative end-to-end service management framework called e2eUberIM. This framework contains a scalable, flexible, and volatile information model (UberIM) and a real-time, "organic" communication and storage process (e2eUber). It leverages the proprietary interfaces...... of different vendors, enabling the resulting enhanced operations system environment to automatically and in real-time optimize operational overhead while maximizing the user experience, and quickly field new innovative, composed "any-services" (XaaS). We document the e2eUberIM requirements and its design...

  2. Imágenes e identidades

    OpenAIRE

    Guerrini, Sebastión

    2013-01-01

    Las identidades se estructuran en un proceso de identificación continua con imágenes. Esto afecta no solo a las identidades de las personas, sino también a las de las instituciones, organizaciones y empresas. En este sentido, el rol de ser del Diseño en Comunicación Visual es intentar afectar a las identidades de los espectadores de sus imágenes. Por esta razón, primero es importante definir qué son las imágenes. Facultad de Bellas Artes

  3. I'm a Map, I'm a Green Tree

    Science.gov (United States)

    Anderson, Daniel

    2010-01-01

    I'm talking about the ways we represent ourselves and our world. I've put some thoughts on the topic together here--a gathering that enacts new media creating and takes up conceptual layers like metaphors, models, and composing. The primary sources are videos from the Get a Mac campaign, aka I'm a Mac; I'm a PC ads. Posthuman concepts blending…

  4. Innovationsmanagement im Marketing: Anleitung zur Innovations-Sensibilisierung und deren Umsetzung im Rahmen der Neuen Lernkultur

    OpenAIRE

    Mangisch, Christian; Blatter, Martin

    2009-01-01

    Der Kurs “Innovationsmanagement im Marketing“ vermittelt den Teilnehmenden Wissen zum Innovationsmanagement, zum innovativen Team und zu innovativen Marketing Trends. Diese Kurse sind online auf dem folgenden Link www.ritzycampus.ch zu finden. Die Teilnehmer müssen für den Online-Kurs keine speziellen Kenntnisse oder Voraussetzungen mitbringen. Diese Online-Kurse im Fach Marketing sind an ein breites Publikum gerichtet. Sie ermöglichen den Studierenden im Eigenstudium die Grundlagen der Theme...

  5. IMS Mitigation Target Areas - 2010 [ds673

    Data.gov (United States)

    California Natural Resource Agency — Mitigation Target Areas (MTA) were developed by the California Department of Fish and Game for the Interim Mitigation Strategy (IMS). The MTAs are an identification...

  6. [Variation im heutigen Deutsch...] / Laura Tidrike

    Index Scriptorium Estoniae

    Tidrike, Laura

    2008-01-01

    Arvustus: Variation im heutigen Deutsch : Perspektiven für den Sprachunterricht / hrsg. v. Eva Neuland. Frankfurt am Main : Lang, 2006. (Sprache - Kommunikation - Kultur. Soziolinguistische Beiträge ; Vol. 4)

  7. Literatur zu Gast im Globe

    CERN Multimedia

    2006-01-01

    Der deutsche Schriftsteller Thomas LEHR liest am 23. März 2006 aus seinem Roman '42', einem philosophischen Abenteuerroman über die Suche nach der Zeit, erzählt in einer funkelnden und souveränen Sprache. Eine Welt von vernichtender Schönheit und bizarren Schrecken wartet auf eine Besuchergruppe, die in der Nähe von Genf die unterirdischen Anlagen des Forschungszentrums für Teilchenphysik CERN besichtigt. Als sie um 12:47:42 wieder ans Tageslicht tritt, scheint ganz Europa in einen Dornröschenschlaf gefallen. Allein die 70 Besucher können sich noch bewegen. Monate und Jahre verharrt die Welt wie in einer riesigen dreidimensionalen Fotografie, bis ein wiederum schockierendes Ereignis die 'Chronifizierten' aus ihren physikalischen Spekulationen und seltsamen Lebensformen reisst. Zu dieser literarischen Veranstaltung im 'Globe of Science and Innovation' laden gemeinsam das Generalkonsulat der Bundesrepublik Deutschland in Genf und CERN ein. Vor Beginn der Lesung wird eine Führung in deutscher Sprac...

  8. Gruppenbezogene Menschenfeindlichkeit im Sport in Brandenburg

    OpenAIRE

    Delto, Hannes; Tzschoppe, Petra

    2016-01-01

    Mit der Querschnittsstudie "Wir und die Anderen – Gruppenbezogene Menschenfeindlichkeit im organisierten Sport in Brandenburg" wurde das Syndrom Gruppenbezogener Menschenfeindlichkeit im organisierten Sport untersucht. Das Konzept der Gruppenbezogenen Menschenfeindlichkeit – ausgehend von einer Ideologie der Ungleichwertigkeit – wurde von Prof. Wilhelm Heitmeyer (Universität Bielefeld) entwickelt. Die Ergebnisse ermöglichen explizite Aussagen über Ausmaß und Ursachen Gruppenbezogener Menschen...

  9. Gruppenbezogene Menschenfeindlichkeit im Sport in Sachsen

    OpenAIRE

    Delto, Hannes; Tzschoppe, Petra

    2015-01-01

    Mit der Querschnittsstudie „Wir und die Anderen – Gruppenbezogene Menschenfeindlichkeit im organisierten Sport in Sachsen“ wurde erstmals das Syndrom Gruppenbezogener Menschenfeindlichkeit im organisierten Sport untersucht. Das Konzept der Gruppenbezogenen Menschenfeindlichkeit – ausgehend von einer Ideologie der Ungleichwertigkeit – wurde von Prof. Wilhelm Heitmeyer (Universität Bielefeld) entwickelt. Die Ergebnisse ermöglichen explizite Aussagen über Ausmaß und Ursachen Gruppenbezogener Men...

  10. Verletzungen und Fehlbeanspruchungen im leistungsorientierten Rudersport

    OpenAIRE

    Bussian, Marc Robert

    2004-01-01

    Die Stellung der Breitensportart Rudern als gesundheitsfördernde Sportform ist in der Literatur gleichlautend positiv beschrieben. Im leistungsorientierten Rudersport müssen neben den Verletzungen und Fehlbeanspruchungen der eigentlichen Sportart die unabdingbaren Nebentrainingsformen berücksichtigt werden. In den neunziger Jahren vollzog sich ein trainingsmethodischer Wandel, die Einführung eines erschwinglichen Rudersimulators und eine technische Weiterentwicklung im Boots- und Ruderbau. Ei...

  11. Integrating IMS LD and IMS QTIv2 using CopperCore Service Integration

    NARCIS (Netherlands)

    Vogten, Hubert

    2006-01-01

    Vogten, H. (2006). Integrating IMS LD and IMS QTIv2 using CopperCore Service Integration. Presentation at International Workshop in Learning Networks for Lifelong Competence Development. March, 30-31, 2006. Sofia, Bulgaria: TENCompetence Conference. Retrieved June 30th, 2006, from

  12. CopperCore Service Integration, Integrating IMS Learning Design and IMS Question and Test Interoperability

    NARCIS (Netherlands)

    Vogten, Hubert; Martens, Harrie; Nadolski, Rob; Tattersall, Colin; Van Rosmalen, Peter; Koper, Rob

    2006-01-01

    Vogten, H., Martens, H., Nadolski, R., Tattersall, C., Rosmalen, van, P., Koper, R., (2006). CopperCore Service Integration, Integrating IMS Learning Design and IMS Question and Test Interoperability. Proceedings of the 6th IEEE International Conference on Advanced Learning Technologies (pp.

  13. Integrating IMS Learning Design and IMS Question and Test Interoperability using CopperCore Service Integration

    NARCIS (Netherlands)

    Vogten, Hubert; Martens, Harrie; Nadolski, Rob; Tattersall, Colin; Van Rosmalen, Peter; Koper, Rob

    2006-01-01

    Please, cite this publication as: Vogten, H., Martens, H., Nadolski, R., Tattersall, C., van Rosmalen, P., & Koper, R. (2006). Integrating IMS Learning Design and IMS Question and Test Interoperability using CopperCore Service Integration. Proceedings of International Workshop in Learning Networks

  14. Δim-lacunary statistical convergence of order α

    Science.gov (United States)

    Altınok, Hıfsı; Et, Mikail; Işık, Mahmut

    2018-01-01

    The purpose of this work is to introduce the concepts of Δim-lacunary statistical convergence of order α and lacunary strongly (Δim,p )-convergence of order α. We establish some connections between lacunary strongly (Δim,p )-convergence of order α and Δim-lacunary statistical convergence of order α. It is shown that if a sequence is lacunary strongly (Δim,p )-summable of order α then it is Δim-lacunary statistically convergent of order α.

  15. Radiological information management system (RadIMS)

    International Nuclear Information System (INIS)

    Oesterling, R.G.; Marko, S.A.; Tschaeche, A.N.

    1991-01-01

    Westinghouse Idaho Nuclear Company, Inc. (WINCO) is developing and implementing an information management system, known as RadIMS, to track and record personnel exposure to ionizing radiation. RadIMS has been designed to fulfill all the requirements of US Department of Energy (USDOE) Order 5480.11, ''Radiation Protection for Occupational Workers.'' This Order requires the contractor to maintain detailed radiation exposure records on all individuals who work at the facility. These records must be retrievable for the entire working life of the individual and be available to other USDOE contractors on request. To meet these general needs, RadIMS provides for retrieval of detailed, comprehensive individual exposure histories as well as the usual online interactions to accomplish day-today radiation protection operations. These two extremes of functionality require different approaches in the WINCO computing environment. The exposure histories include database text, paper, microfilm, and electronic bitmaps

  16. Radiological information management system (RadIMS)

    Energy Technology Data Exchange (ETDEWEB)

    Oesterling, R.G.; Marko, S.A.; Tschaeche, A.N.

    1991-08-19

    Westinghouse Idaho Nuclear Company, Inc. (WINCO) is developing and implementing an information management system, known as RadIMS, to track and record personnel exposure to ionizing radiation. RadIMS has been designed to fulfill all the requirements of US Department of Energy (USDOE) Order 5480.11, Radiation Protection for Occupational Workers.'' This Order requires the contractor to maintain detailed radiation exposure records on all individuals who work at the facility. These records must be retrievable for the entire working life of the individual and be available to other USDOE contractors on request. To meet these general needs, RadIMS provides for retrieval of detailed, comprehensive individual exposure histories as well as the usual online interactions to accomplish day-today radiation protection operations. These two extremes of functionality require different approaches in the WINCO computing environment. The exposure histories include database text, paper, microfilm, and electronic bitmaps.

  17. Radiological information management system (RadIMS)

    Energy Technology Data Exchange (ETDEWEB)

    Oesterling, R.G.; Marko, S.A.; Tschaeche, A.N.

    1991-08-19

    Westinghouse Idaho Nuclear Company, Inc. (WINCO) is developing and implementing an information management system, known as RadIMS, to track and record personnel exposure to ionizing radiation. RadIMS has been designed to fulfill all the requirements of US Department of Energy (USDOE) Order 5480.11, ``Radiation Protection for Occupational Workers.`` This Order requires the contractor to maintain detailed radiation exposure records on all individuals who work at the facility. These records must be retrievable for the entire working life of the individual and be available to other USDOE contractors on request. To meet these general needs, RadIMS provides for retrieval of detailed, comprehensive individual exposure histories as well as the usual online interactions to accomplish day-today radiation protection operations. These two extremes of functionality require different approaches in the WINCO computing environment. The exposure histories include database text, paper, microfilm, and electronic bitmaps.

  18. Midlatitude magnetometer chains during the IMS

    International Nuclear Information System (INIS)

    Mcpherron, R.L.

    1982-01-01

    The International Magnetospheric Study (IMS) is an international program to study global problems of magnetospheric dynamics. A key element of the U.S. participation in this program was the establishment of a ground magnetometer network. This network included a number of arrays at high and low latitudes. This report describes three chains established at midlatitudes, including the IMS Midlatitude Chain, the AFGL Magnetometer Network, and the Bell Lab Conjugate Array. Descriptions of the type of equipment, station locations, types of data display, and availability of data for each chain are presented in this report. A major problem of the data analysis phase of the IMS will be reducing selected subsets of these data to a common format. Currently, there are no plans to do this in a systematic manner

  19. Developing an effective IM/IT strategy.

    Science.gov (United States)

    Kramer, Sarah; Walker, Joanne; Falk, Will

    2009-01-01

    Healthcare organizations and systems around the world lag far behind banking, manufacturing, travel and other industries in their use of information management/information technology (IM/IT) to deliver high-quality products and services. Across Canada, healthcare organizations, as well as governments, understand that information and information technology are needed to deliver quality care and to sustain our publicly funded health system. However, insufficient funding, few experienced resources, lack of strong leadership and absence of clear business/clinical rationale have restricted innovation and advancement in the use of IM/IT to improve healthcare delivery and patient outcomes.

  20. Systeme im Einsatz. Lernmanagement, Kompetenzmanagement und PLE

    NARCIS (Netherlands)

    Kalz, Marco; Schön, Sandra; Lindner, Martin; Roth, Detlev; Baumgartner, Peter

    2011-01-01

    Kalz, M., Schön, S., Lindner, M., Roth, D., & Baumgartner, P. (2011). Systeme im Einsatz. Lernmanagement, Kompetenzmanagement und PLE. In M. Ebner, & S. Schön (Eds.), L3T - Lerhbuch für Lernen und Lehren mit Technologie (pp. 111-118). Graz, Austria: Uni Graz. Available at

  1. IMS Learning Design: De stand van zaken

    NARCIS (Netherlands)

    Tattersall, Colin; Manderveld, Jocelyn

    2005-01-01

    Tattersall, C. & Manderveld, J. (2004) IMS Learning Design: De stand van zaken In: Gorissen, P., Manderveld, J., Benneker, F. & Cordewener, B. Leertechnologie in de Lage Landen (pp. 31-33). Utrecht, Stichting Surf. Ook beschikbaar in dspace: http://hdl.handle.net/1820/270

  2. An IMS testbed for SIP applications

    DEFF Research Database (Denmark)

    Caba, Cosmin Marius; Soler, José

    2013-01-01

    The paper presents the design and implementation of an emulation platform for the IP Multimedia Subsystem. The SIP Servlet API v1.1 has been used to implement the final system. The purpose of the emulation is to offer to IMS service developers an environment where they can integrate development...

  3. Managing P2P services via the IMS

    NARCIS (Netherlands)

    Liotta, A.; Lin, L.

    2007-01-01

    The key aim of our work was to illustrate the benefits and means to deploy P2P services via the IMS. Having demonstrated the technical viability of P2P-IMS we have also found a way to add a new management dimension to existing P2P systems. P2P-IMS comes with a natural "data management" mechanism,

  4. [Kriegsland im Osten Eroberung, Kolonisierung und Militärherrschaft im Ersten Weltkrieg] / Markus Pöhlmann

    Index Scriptorium Estoniae

    Pöhlmann, Markus

    2003-01-01

    Rets.: Vejas Gabriel Liulevicius. Kriegsland im Osten Eroberung, Kolonisierung und Militärherrschaft im Ersten Weltkrieg. Aus dem Amerikanischen von Jürgen Bauer, Edith Nerke und Fee Engemann. Hamburg : 2002

  5. The Application of Internal Marketing (IM in a Service Organization

    Directory of Open Access Journals (Sweden)

    R. Sharma

    2013-07-01

    Findings and Strategic Implications. To complement earlier theoretical proposition on IM, the findings indicate that there are several empirical aspects such as “costs, people and concept” which hinder successful implementation of IM. This study proposes several strategic HR recommendations to reduce the “implementation gap” in IM such as to conduct continuous staff training on IM knowledge on regular time intervals, to reduce excessive work load and pressure and engaging staff members in continuous personal development sessions. In addition, the findings reveal that IM training should be given priority to solve “people-oriented” issues.

  6. λ (Δim) -statistical convergence of order α

    Science.gov (United States)

    Colak, Rifat; Et, Mikail; Altin, Yavuz

    2017-09-01

    In this study, using the generalized difference operator Δim and a sequence λ = (λn) which is a non-decreasing sequence of positive numbers tending to ∞ such that λn+1 ≤ λn+1, λ1 = 1, we introduce the concepts of λ (Δim) -statistical convergence of order α (α ∈ (0, 1]) and strong λ (Δim) -Cesàro summablility of order α (α > 0). We establish some connections between λ (Δim) -statistical convergence of order α and strong λ (Δim) -Cesàro summablility of order α. It is shown that if a sequence is strongly λ (Δim) -Cesàro summable of order α, then it is λ (Δim) -statistically convergent of order β in case 0 < α ≤ β ≤ 1.

  7. Emotionsregulationsstrategien und aggressives Verhalten im Kindergartenalter

    OpenAIRE

    Helmsen, Johanna; Petermann, Franz

    2010-01-01

    In der vorliegenden Studie (N = 193) wurde untersucht, ob sich körperlich und relational aggressive Kinder im Kindergartenalter (mittleres Alter: 55 Monate) in ihren Emotionsregulationsstrategien von ihren unauffälligen Altersgenossen unterscheiden. Zur Erhebung der Emotionsregulation wurde eine strukturierte, videografierte Verhaltensbeobachtung durchgeführt, in der gezielt Frustration ausgelöst wurde. Anschließend wurden Regulationsstrategien in sieben verschiedenen Kategorien ausgewertet. ...

  8. THOR Ion Mass Spectrometer instrument - IMS

    Science.gov (United States)

    Retinò, Alessandro; Kucharek, Harald; Saito, Yoshifumi; Fraenz, Markus; Verdeil, Christophe; Leblanc, Frederic; Techer, Jean-Denis; Jeandet, Alexis; Macri, John; Gaidos, John; Granoff, Mark; Yokota, Shoichiro; Fontaine, Dominique; Berthomier, Matthieu; Delcourt, Dominique; Kistler, Lynn; Galvin, Antoniette; Kasahara, Satoshi; Kronberg, Elena

    2016-04-01

    Turbulence Heating ObserveR (THOR) is the first mission ever flown in space dedicated to plasma turbulence. Specifically, THOR will study how turbulent fluctuations at kinetic scales heat and accelerate particles in different turbulent environments within the near-Earth space. To achieve this goal, THOR payload is being designed to measure electromagnetic fields and particle distribution functions with unprecedented resolution and accuracy. Here we present the Ion Mass Spectrometer (IMS) instrument that will measure the full three-dimensional distribution functions of near-Earth main ion species (H+, He+, He++ and O+) at high time resolution (~ 150 ms for H+ , ~ 300 ms for He++) with energy resolution down to ~ 10% in the range 10 eV/q to 30 keV/q and angular resolution ~ 10°. Such high time resolution is achieved by mounting multiple sensors around the spacecraft body, in similar fashion to the MMS/FPI instrument. Each sensor combines a top-hat electrostatic analyzer with deflectors at the entrance together with a time-of-flight section to perform mass selection. IMS electronics includes a fast sweeping high voltage board that is required to make measurements at high cadence. Ion detection includes Micro Channel Plates (MCP) combined with Application-Specific Integrated Circuits (ASICs) for charge amplification, discrimination and time-to-digital conversion (TDC). IMS is being designed to address many of THOR science requirements, in particular ion heating and acceleration by turbulent fluctuations in foreshock, shock and magnetosheath regions. The IMS instrument is being designed and will be built by an international consortium of scientific institutes with main hardware contributions from France, USA, Japan and Germany.

  9. Experimentelle Untersuchungen zur sonographischen Frakturdiagnostik im Kinderalter

    OpenAIRE

    Meuser, Stefan Heinrich Peter

    2010-01-01

    Falsch diagnostiziert und nicht korrekt therapiert können Frakturen im Kindesalter zu Wachstumsstörungen und damit verbundenen lebenslangen Problemen führen. Nach einem Trauma ist die klinische Untersuchung und Bestimmung des Schmerzmaximums gerade bei Kindern oft sehr schwierig. So müssen häufig mehrere Röntgenaufnahmen getätigt werden, ehe eine Fraktur sicher diagnostiziert oder ausgeschlossen werden kann. Die hierbei auftretende ionisierende Strahlung geht jedoch besonder...

  10. Professionelle Literaturrecherche und -verwaltung im Web [Praxisbericht

    OpenAIRE

    Schaffert, Sandra

    2007-01-01

    In diesem Beitrag werden Hinweise für eine professionelle Literaturrecherche und -verwaltung im World Wide Web gegeben. Dazu werden für die pädagogische Ausbildung und Forschung einschlägige Literaturdatenbanken genannt, insbesondere solche, die kostenlos zu nutzen sind. Außerdem werden Tipps für clevere Recherchen sowie eine kurze Übersicht über Web-Werkzeuge zur Verwaltung von bibliografischen Angaben gegeben. (DIPF/Orig.)

  11. Dynamik des Kaufverhaltens im Bio-Sortiment

    OpenAIRE

    Buder, Fabian; Hamm, Ulrich; Bickel, Malte; Bien, Barbara; Michels, Paul

    2010-01-01

    Das Gesamtziel des vorliegenden Forschungsprojekts war es, eine detaillierte Informationsgrundlage zum tatsächlichen Kaufverhalten von deutschen Haushalten bei ökologischen Lebensmitteln auf der Basis von Haushaltspaneldaten zu erstellen. Dazu sollten zum einen relevante Aspekte des Kaufverhaltens von Haushalten bei Öko-Lebensmitteln im Zeitverlauf von 2004 bis 2008 analysiert und zum anderen die Einflussfaktoren des Kaufverhaltens bei Öko-Lebensmitteln für das Jahr 2008 identifiziert werden....

  12. Gewerbsmässigkeit im schweizerischen Luftrecht

    OpenAIRE

    Müller, Roland

    2005-01-01

    Der Begriff der Gewerbsmässigkeit hat im schweizerischen Luftrecht eine grosse Bedeutung. Werden gewerbsmässige Flüge ohne die entsprechenden Bewilligungen und Voraussetzungen durchgeführt, so resultieren gravierende zivilrechtliche, strafrechtliche und administrative Konsequenzen. In den massgebenden internationalen Luftfahrtabkommen findet sich keine Definition der Gewerbsmässigkeit, dies wird den einzelnen Staaten überlassen. Nur in den Joint Aviation Requirements und in der EU-Zollver...

  13. Toward an Intelligent Ion Mobility Spectrometer (IMS)

    International Nuclear Information System (INIS)

    McJunkin, Timothy R.; Scott, Jill R.; Miller, Carla J.

    2003-01-01

    The ultimate goal is to design and build a very smart ion mobility spectrometer (IMS) that can operate autonomously. To accomplish this, software capable of interpreting spectra so that it can be used in control loops for data interpretation as well as adjusting instrument parameters is being developed. Fuzzy logic and fuzzy numbers are used in this IMS spectra classification scheme. Fuzzy logic provides a straight forward method for developing a classification/detection system, whenever rules for classifying the spectra can be described linguistically. Instead of using 'max' and 'min' values, the product of the truth values is used to determine class membership. Using the product allows rule-bases that utilize the AND function to allow each condition to discount truth value in determining membership, while rule-bases with an OR function are allowed to accumulate membership. Fuzzy numbers allow encapsulation of the uncertainties due to ion mobility peak widths as well as measured instrumental parameters, such as pressure and temperature. Associating a peak with a value of uncertainty, in addition to making adjustments to the mobility calculation based on variations in measured parameters, enables unexpected shifts to be more reliably detected and accounted for; thereby, reducing the opportunity for 'false negative' results. The measure of uncertainty is anticipated to serve the additional purpose of diagnosing the operational conditions of the IMS instrument.

  14. Grand Prix Eurovision: Eine Fankultur im Medienzeitalter

    Directory of Open Access Journals (Sweden)

    Heinz Moser

    2017-06-01

    Full Text Available Der Grand Prix Eurovision ist seit Jahrzehnten eine der bekanntesten Unterhaltungssendungen im europäischen Raum. Dennoch erregte es Verwunderung, wenn der Schreibende Bekannten darüber berichtete, daß dies ein Forschungsgegenstand sei. Wurde von Interviews mit Grand Prix-Fans erzählt, so fielen schnell Aussagen wie: „Wie kann man sich nur für so etwas Abseitiges und Triviales wie den Grand Prix interessieren“. Dennoch bin ich der Meinung, daß Fankulturen für die entstehende Mediengesellschaft ein nicht unwichtiges Forschungsthema darstellen. Zwar geht es nicht um eine medienpädagogische Fragestellung im engeren Sinne; die Fans des Grand Prix Eurovision sind dem Jugendalter längst entwachsen. Dennoch handelt es sich bei Fangemeinschaften um Phänomene, die im Rahmen von Jugend- und Kinderkulturen von besonderer Relevanz sind. So meint Winter (1997, daß jugendliche Fanwelten eine bedeutende Rolle als Kristallisationspunkte kultureller Differenzierung spielen: ,Die Zugehörigkeit zu einer Fan weit ist Teil der jugendlichen Lebensbewältigung in der Postmoderne, denn in der Gemeinschaft der Fans können Jugendliche emotionale Allianzen eingehen, außeralltäglichen Beschäftigungen nachgehen, expressive Identitätsmuster gemeinschaftlich realisieren und sich mit ihrer Lebenssituation als Heranwachsende auseinandersetzen“ (Winter 1997, S. 51f..

  15. Cyberbullying und Empathie : affektive, kognitive und medienbasierte Empathie im Kontext von Cyberbullying im Kindes- und Jugendalter

    OpenAIRE

    Pfetsch, Jan; Müller, Christin R.; Ittel, Angela

    2014-01-01

    "Bei medial vermittelter Kommunikation sinkt sowohl die Hemmschwelle für aggressive Verhaltensweisen wie Cyberbullying als auch die Wahrscheinlichkeit empathischer Reaktionen. Im Fokus der vorliegenden Studie mit 979 Schülerinnen und Schülern der 4.-8. Klassen (M=12.01, SD=1.68 Jahre, 55% weiblich) stand die Frage, ob Cyberbullies geringere Ausprägungen für affektive, kognitive und medienbasierte Empathie aufweisen als Unbeteiligte. Empathie wurde im Selbst- und Peerbericht erhoben. Hypothese...

  16. Security in the internet; Sicherheitsaspekte im Internet

    Energy Technology Data Exchange (ETDEWEB)

    Seibel, R.M.M.; Kocher, K.; Landsberg, P. [Witten-Herdecke Univ., Witten (Germany). Inst. fuer Diagnostische und Interventionelle Radiologie

    2000-04-01

    Aim of the study: Is it possible to use the Internet as a secure media for transport of telemedicine? Which risks exist for routine use? In this article state of the art methods of security were analysed. Telemedicine in the Internet has severe risks, because patient data and hospital data of a secure Intranet can be manipulated by connecting it to the Web. Conclusions: Establishing of a firewall and the introduction of HPC (Health Professional Card) are minimizing the risk of un-authorized access to the hospital server. HPC allows good safety with digital signature and authentication of host and client of medical data. For secure e-mail PGP (Pretty Good Privacy) is easy to use as a standard protocol. Planning all activities exactly as well as following legal regulations are important requisites for reduction of safety risks in Internet. (orig.) [German] Ziele der Studie und Analyse: Es sollten die Fragen beantwortet werden, ob es moeglich ist, das Internet als sicheres Uebermittlungsmedium fuer Telemedizin zu nutzen und welche Sicherheitsrisiken bestehen. Dazu wurden die gaengigen Sicherheitsmethoden analysiert. Telemedizin im Internet ist mit Sicherheitsrisiken behaftet, die durch die Oeffnung eines Intranets mit der Moeglichkeit zur unberechtigten Manipulation von aussen bedingt sind. Schlussfolgerung: Diese Sicherheitsrisiken koennen durch eine Firewall weitgehend unterbunden werden. Chipkarten wie die Health professional card ermoeglichen eine hohe Sicherheit bei digitaler Signatur und sicherer Authentifikation der Sender und Empfaenger von Daten im Internet. Auch Standards wie Pretty good privacy sind inzwischen fuer sichere e-mails einfach einzusetzen. Wichtige Voraussetzung fuer die Reduktion von Sicherheitsrisiken ist unter Beruecksichtigung der gesetzlichen Vorgaben die exakte Planung aller Aktivitaeten im Internet, bei denen medizinische Patientendaten versandt werden sollen, in einem Team aus Aerzten und Informatikern. (orig.)

  17. Ion Mobility Spectrometer / Mass Spectrometer (IMS-MS)

    Energy Technology Data Exchange (ETDEWEB)

    Hunka, Deborah E. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Austin, Daniel [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2005-10-01

    The use of Ion Mobility Spectrometry (IMS)in the Detection of Contraband Sandia researchers use ion mobility spectrometers for trace chemical detection and analysis in a variety of projects and applications. Products developed in recent years based on IMS-technology include explosives detection personnel portals, the Material Area Access (MAA) checkpoint of the future, an explosives detection vehicle portal, hand-held detection systems such as the Hound and Hound II (all 6400), micro-IMS sensors (1700), ordnance detection (2500), and Fourier Transform IMS technology (8700). The emphasis to date has been on explosives detection, but the detection of chemical agents has also been pursued (8100 and 6400).

  18. [Bernt Ahrenholz : Verweise mit Demonstrativa im Gesprochenen Deutsch...] / Klaus Geyer

    Index Scriptorium Estoniae

    Geyer, Klaus

    2008-01-01

    Arvustus: Ahrenholz, Bernt. Verweise mit Demonstrativa im gesprochenen Deutsch : Grammatik, Zweitspracherwerb und Deutsch als Fremdsprache. Berlin ; New York : de Gruyter, 2007. (Linguistik - Impulse & Tendenzen ; 17)

  19. Kriminologie und Kriminalistik im Zugriff der Geschichtswissenschaft

    Directory of Open Access Journals (Sweden)

    Peter-Alexis Albrecht

    2007-01-01

    Full Text Available Rezensierte Werke:Silviana Galassi, Kriminologie im Deutschen Kaiserreich. Geschichte einer gebrochenen Verwissen­schaftlichung, Stuttgart: Franz Steiner Verlag 2004, 452 S., ISBN 3-515-08352-9; Peter Becker, Dem Täter auf der Spur. Eine Geschichte der Kriminalistik, Darmstadt: Primus Verlag 2005, 287 S., ISBN 3-89678-275-4; Peter Becker, Richard F. Wetzell (Hg., Criminals and their Scientists. The History of Criminology in International Perspective, Cambridge: Cambridge University Press 2006, 492 S., ISBN 0-521-81012-4

  20. Im Bild sprechen: Cixous Visual Instruction: Cixous

    OpenAIRE

    Jens E. Sennewald

    2006-01-01

    Gemeinsam von Künstlern und Wissenschaftlern/Philosophen erstellte Bücher sind selten und nicht immer erfolgreich. Eines der Fährnisse ist das Verhältnis zwischen bildlichen und schriftlichen Anteilen: Nicht selten wird der künstlerische Anteil zur Illustration der dominierenden Schrift. Eine Neupositionierung des Bildes im Buch ist nun der amerikanischen Künstlerin Roni Horn gelungen. Mehr als „sujet“ ihres Buches, ist die französische Philosophin Hélène Cixous gleichsam instruierende „Stimm...

  1. Corporate Venture Capital im Bankensektor: Eine Fallstudie

    OpenAIRE

    Maxin, Hannes

    2015-01-01

    Die Digitalisierung der Gesellschaft beeinflusst zunehmend das klassische Bankgeschäft, was durch die Erfolge vieler junger FinTech-Unternehmen verdeutlicht wird. Der damit verbundene Innovationsdruck führte dazu, dass die Commerzbank AG im Oktober 2013 die Main Incubator GmbH gründete. Mithilfe dieser Corporate Venture Capital-Gesellschaft (CVC-Gesellschaft) versucht die Frankfurter Großbank, eine Kooperation mit den neuen Wettbewerbern einzugehen, um mögliche Synergiepotenziale für das eige...

  2. Politische Inhalte im Internet: Angebot und Nachfrage politischer Inhalte im World Wide Web am Beispiel von Volksabstimmungen in der Schweiz

    OpenAIRE

    Rademacher, Patrick Horst Josef

    2010-01-01

    Welche Bedeutung kommt dem Internet in der Politikvermittlung zu? Dieser Frage geht Patrick Rademacher nach, indem er untersucht, welche Anbieter politische Inhalte im Internet zur Verfügung stellen, wie sie dabei vorgehen und wie die Struktur der Inhalte beschaffen ist. Darüber hinaus analysiert er, inwiefern die online angebotenen Inhalte auf eine Nachfrage durch die Bürger treffen. Im Untersuchungskontext von Volksabstimmungen in der Schweiz hat der Autor hierfür im Jahr 2008 umfangreiche ...

  3. bildbild – visuelle Kompetenz im Unterricht

    Directory of Open Access Journals (Sweden)

    Norbert Grube

    2013-05-01

    Full Text Available Der vorliegende Artikel stellt das Webseiten-Projekt bildbild vor. Der Webseite liegt die Motivation zugrunde, Schülerinnen und Schüler für ein Nachdenken über globale Themen zu sensibilisieren. Ein solches Nachdenken ist immer auch eines über bildlich vermittelte Wirklichkeit. Es ist mit bildbild ein Anliegen, angesichts einer allseits konstatierten «Bilderflut» ein didaktisches Medium zu entwickeln, das einen Fundus an historischen und aktuellen Fotografien zur Verfügung stellt und diese so aufbereitet, dass sie gerade nicht hinter ihrer illustrativen Funktion verschwinden. Dadurch sollen die Bilder für ein selbständiges Lernen auf dem Weg hin zu einer visuellen Kompetenz einsetzbar gemacht werden. Der Beitrag beleuchtet die Entwicklung der Webseite vor dem Hintergrund kulturkritischer Haltungen zum Bild seit der Moderne sowie im Rahmen dessen, was seit den 1970er Jahren im pädagogischen Kontext als Visual Literacy diskutiert und gefördert wird. Dabei wird auch auf die medialen Potenziale einer Webseite für die Bildlesekompetenz von Jugendlichen eingegangen.

  4. Thermal Degradation Study of IM7/DMBZ-15 High Temperature Composite by TGA/FTIR

    National Research Council Canada - National Science Library

    Nadler, Melvin

    2003-01-01

    (U) High temperature graphite composites such as IM7/8552 epoxy, IM7/5250 BMI, and IM7/DMBZ-15 polyimide show blistering and/or "catastrophic" delamination when rapidly heated to temperatures above...

  5. The future of the IMS Learning Design specification: a critical look

    NARCIS (Netherlands)

    Sloep, Peter

    2009-01-01

    P. B. Sloep (2009). The future of the IMS Learning Design specification: a critical look. Presentation at the IMS Learning Design seminar 'The future of IMS Learning Design'. December, 10, 2009, Wollongong, Australia: University of Wollongong.

  6. Digitalisierung im Verteilnetz: Evolution oder Revolution anhand konkreter Beispiele

    Science.gov (United States)

    Krone, Oliver; Bachmann, Maurus

    Durch die Integration der neuen erneuerbaren Energien steht das Stromnetz vor großen Herausforderungen. Das Energiesystem als Gesamtes und die Verteilnetze im Speziellen werden smart. Anhand konkreter Beispiele wird aufgezeigt, wie die Digitalisierung im Elektrizitätsnetz voranschreitet. Diese Entwicklung ist eine Evolution, nicht aber eine Revolution.

  7. [Einheit und Vielfalt in der Rechtsgeschichte im Ostseeraum] / Marelle Leppik

    Index Scriptorium Estoniae

    Leppik, Marelle

    2013-01-01

    Arvustus: Einheit und Vielfalt in der Rechtsgeschichte im Ostseeraum. Unity and plurality in the legal history of the Baltic Sea area Sechster Rechtshistorikertag im Ostseeraum, 3.-5. Juni 2010 Tartu (Estland) / Riga (Lettland9. Hrsg. von Marju Luts-Sootak, Sanita Osipova und Frank L. Schäfer. (Rechtshistorische Reihe, Bd. 428.) Land. Frankfurt am Main u. a. 2012

  8. Information Management System (Ims) For Gender Mainstreaming In ...

    African Journals Online (AJOL)

    Information Management System (IMS) is an essential tool in supporting the provision of information needed for planning and decision making in any organization. Proper IMS facilitates the smooth flow of information both vertical and horizontal. This paper presents the findings of a survey on information needs of the Gender ...

  9. Support interoperability and reusability of emerging forms of assessment: Some issues on integrating IMS LD with IMS QTI

    NARCIS (Netherlands)

    Miao, Yongwu; Boon, Jo; Van der Klink, Marcel; Sloep, Peter; Koper, Rob

    2009-01-01

    Miao, Y., Boon, J., Van der Klink, M., Sloep, P. B., & Koper, R. (2011). Support interoperability and reusability of emerging forms of assessment: Some issues on integrating IMS LD with IMS QTI. In F. Lazarinis, S. Green, & E. Pearson (Eds.), E-Learning Standards and Interoperability: Frameworks

  10. Die Rule of Law im Völker- und im Europarecht – aktuelle Probleme

    Directory of Open Access Journals (Sweden)

    Helmut Tichy

    2015-04-01

    Full Text Available Diese am 5. März 2015 in Graz gehaltene Antrittsvorlesung eines Praxisprofessors, der im Hauptberuf Leiter des Völkerrechtsbüros im österreichischen Außenministerium ist, beschäftigt sich mit dem Begriff der Herrschaft des Rechts in den internationalen Beziehungen (Rule of Law und mit den Möglichkeiten Österreichs, zur Stärkung der Rule of Law und zur Lösung aktueller Probleme beizutragen. Dabei werden insbesondere die Mitwirkung an Kodifikationsbemühungen und an der Verbesserung der Einhaltung des humanitären Völkerrechts, die Umsetzung der Menschenrechte (auch in Österreich und Fragen der internationalen Gerichtsbarkeit angesprochen.

  11. Antarctic observations available for IMS correlative analyses

    International Nuclear Information System (INIS)

    Rycroft, M.J.

    1982-01-01

    A review is provided of the wide-ranging observational programs of 25 stations operating on and around the continent of Antarctica during the International Magnetospheric Study (IMS). Attention is given to observations of geomagnetism, short period fluctuations of the earth's electromagnetic field, observations of the ionosphere and of whistler mode signals, observational programs in ionospheric and magnetospheric physics, upper atmosphere physics observations, details of magnetospheric programs conducted at Kerguelen, H-component magnetograms, magnetic field line oscillations, dynamic spectra of whistlers, and the variation of plasmapause position derived from recorded whistlers. The considered studies suggest that, in principle, if the level of magnetic activity is known, predictions can be made concerning the time at which the trough occurs, and the shape and the movement of the main trough

  12. FUNKTIONSLOGIK TERRORISTISCHER PROPAGANDA IM BEWEGTEN BILD

    Directory of Open Access Journals (Sweden)

    Stefan Christoph

    2015-09-01

    Full Text Available Die Medienfront ist heute ein wichtiger Kriegsschauplatz, den viele neben Land, Wasser und Luft für gleich wichtig halten. Terroristen fühlen sich in sozialen Medien wohler als man denken könnte. Im Netz können sie die asymmetrische Kräfteverteilung überwinden, die sie in der offenen Feldschlacht unterlegen sein ließe. Terroristen machen sich das Bild zur Waffe und produzieren erst durch die Positionierung an der Medienfront Sinn in ihren Taten. Ohne ein Bekennerschreiben, ein Abschiedsvideo des Attentäters oder ein letztes Posting im sozialen Netzwerk wäre ein Bombenanschlag nichts als ein Kapitalverbrechen. Durch die terroristische Kommunikationsstrategie wird das Verbrechen erst zum terroristischen Akt. Das ist die theoretische Grundannahme dieses Aufsatzes. Ohne Medienberichterstattung könnten terroristische Organisationen nicht existieren. Durch die Entwicklung des Web 2.0 und insbesondere sozialer Medien kommen terroristische Organisationen heutzutage aber ganz ohne das Verschicken von Videotapes an Fernsehsender aus. Durch YouTube und andere Kanäle, können sie die Adressaten ihrer Botschaften direkt und ohne zwischengeschaltete Journalistinnen und Journalisten erreichen. So ist es nicht erstaunlich, dass terroristische Organisationen sich eine gewisse Expertise im Umgang mit sozialen Medien zugelegt haben. Al-Qaida hat seine eigene Medienabteilung, auch die kolumbianischen FARC arbeiten sehr professionell und welchen Einfluss der Islamische Staat im Internet ausübt ist inzwischen bereits Gegenstand einiger Reportagen und Untersuchungen geworden. Die diesem Aufsatz zugrundeliegende Arbeit hat sich mit neun verschiedenen Videos aus dem Umfeld von al-Qaida, der IRA und der FARC beschäftigt und versucht, aus dem analytischen Vergleich dieser Videos Rückschlüsse über terroristische Medienmacher und die terroristischen Organisationen selbst zu ziehen. Wie schnell und suggestiv die Videos arbeiten, ist etwa davon abh

  13. Die Pluralbildung im Deutschen - ein Versuch im Rahmen der Optimalitätstheorie

    Directory of Open Access Journals (Sweden)

    Wegener, Heide

    1999-01-01

    Full Text Available Die Pluralbildung im Deutschen ist nicht chaotisch, aber komplex. Unabhängig davon, ob man für die Pluralbildung Regeln, Schemata oder die Wortstruktur als Erklärungsmodell benutzt, bleibt die Tatsache einer beachtlichen Zahl miteinander konkurrierender Formen zu erklären. Dies gilt schon deshalb, weil die Variation unter den Pluralformen wohl mit dazu beiträgt, dass trotz der Arbeiten von Mugdan 1977 und Köpcke 1987, 1993, der klaren Darstellung des Pluralsystems in vielen Grammatiken, z.B. Eisenberg 1986, 1989, 1998 noch immer bisweilen die Meinung besteht, die Pluralbildung im Deutschen sei arbiträr.Es soll gezeigt werden, dass das Pluralsystem des Deutschen nach Beschränkungen aufgebaut ist, die morphologischer und silbenphonologischer Natur sind und sich im Rahmen der Optimalitätstheorie (OT beschreiben lassen. Die OT nimmt an, dass Wortformen universalen Beschränkungen (Constraints unterliegen, und dass diese prinzipiell verletzbar sind. Ich werde zunächst die für die Pluralbildung relevanten Beschränkungen definieren, dann an heimischen Pluralformen und -varianten ihr Zusammenwirken zeigen und schließlich den Assimilationsprozess von Fremdwörtern mit Hilfe dieser Beschränkungen und der Beschränkungshierarchien zu erklären versuchen. Daran werden schließlich Überlegungen zu Verarbeitung und Lernbarkeit der Pluralformen geknüpft.

  14. Implantate im Mittelohrbereich - Teil 2 (Ergänzungen 2007)

    Science.gov (United States)

    Stieve, M.; Lenarz, Thomas

    In Deutschland leben ca. 12 Millionen Menschen, die an einer ein- oder beidseitigen Schwerhörigkeit leiden. Diese kann angeboren oder im Laufe des Lebens erworben sein. Klinisch und therapeutisch wichtig ist die Unterscheidung hinsichtlich des Schädigungsortes im Bereich des Mittelohres, d. h. eine Schalleitungsschwerhörigkeit, oder im Bereich des Innenohres, d. h. eine Schallempfindungsschwerhörigkeit, wobei hier der Schädigungsort auch am Hörnerven oder in den zentralen Hörabschnitten liegen kann. Therapeutisch lassen sich sowohl Schwerhörigkeiten im Bereich des Mittelohres als auch im Innenohr und sogar im Hirnstammbereich (Hirnstammimplantat) behandeln. 1,9 Millionen Schwerhörige haben eine Erkrankung im Mittelohrbereich, d. h. der Schall kann nur ungenügend auf das Innenohr übertragen werden. Die Ursache besteht meist in einer chronischen Mittelohrentzündung, die zu einer Zerstörung des Trommelfells und der Gehörknöchelchenkette geführt haben. Therapeutisch und damit als Prinzip der operativen Hörverbesserung steht primär der Verschluß des Trommelfells oder eine Rekonstruktion der Gehörknöchelchen. Mittelohroperationen werden mikrochirurgisch unter dem Operationsmikroskop durchgeführt, wobei zunächst durch eine sanierende Operation der Entzündungsprozeß entfernt wird und nach einer Ausheilungszeit die Gehörknöchelchenkette durch künstliche Prothesen rekonstruiert werden kann.

  15. Thermal instabilities in low-mass subgiants?

    International Nuclear Information System (INIS)

    Von Rudloff, I.R.; Vandenberg, D.A.; Hartwick, F.D.A.

    1988-01-01

    The thermal stability of evolving stars in globular clusters has been examined in order to determine whether or not gaps and the observationally inferred deep mixing near the base of the red-giant branch can be explained in terms of an instability of the hydrogen-burning shell. The results of this investigation are that, in agreement with previous suggestions, the greatest potential for such an instability occurs just at the point where a star begins to ascend the giant branch - i.e., where gaps are seen in some systems - but, in contrast with earlier predictions, the standard models do not actually become unstable. However, from all indications, the stability is believed to be marginal, and it is suggested that rotation, which has now been observed in some globulars, may be the mechanism by which an instability is produced. 36 references

  16. Medienerziehung im Vorschulbereich - Zum Projekt Mediengarten der Wiener Medienpädagogik

    Directory of Open Access Journals (Sweden)

    Gudrun Kern

    2010-09-01

    Full Text Available Im Zuge des Projekts Mediengarten der Wiener Medienpädagogik wurde in Kooperation mit angehenden KindergartenpädagogInnen eine Medienerziehung im Sinne einer Auseinandersetzung über Medien im Vorschulbereich anhand konkreter Angebote in Kindergärten konzipiert. Im folgenden Artikel werden die Schwerpunktsetzungen dieses Konzepts vorgestellt und durch praktische Beispiele verdeutlicht.

  17. A Management Tool for Improvement (Improving) IMS Stations Performance

    International Nuclear Information System (INIS)

    Mohammad, D.; Pantin, A.; Quintana, E.

    2011-01-01

    IMS-Maintenance is a software under development by the personnel of ARN-CTBT office, intended for the technical management of IMS stations under ARN's responsibility. This software integrates the whole control of the equipment in an IMS station, including the management of consumables used in daily or periodic operation. It permits an easy retrieval (access) of the technical features, suppliers, etc. of each item of the equipment, as well as its maintenance history and scheduled task. Although this project is still in a starting phase, a preliminary version of this software is being used in radionuclide station RN01 (Buenos Aires), having already demonstrated its usefulness and potential for the improvement of IMS station management. (authors)

  18. Implementing Adaptive Educational Methods with IMS Learning Design

    NARCIS (Netherlands)

    Specht, Marcus; Burgos, Daniel

    2006-01-01

    Please, cite this publication as: Specht, M. & Burgos, D. (2006). Implementing Adaptive Educational Methods with IMS Learning Design. Proceedings of Adaptive Hypermedia. June, Dublin, Ireland. Retrieved June 30th, 2006, from http://dspace.learningnetworks.org

  19. CopperCore, an Open Source IMS Learning Design Engine

    NARCIS (Netherlands)

    Vogten, Hubert

    2004-01-01

    The presentation gives an overview of the approach of the development programme of the OTEC department towards the development of Open Source. The CopperCore IMS Learning Design engine is described as an example of this approach.

  20. [Preussen und Livland im Zeichen der Reformation] / Anti Selart

    Index Scriptorium Estoniae

    Selart, Anti, 1973-

    2015-01-01

    Arvustus: Preussen und Livland im Zeichen der Reformation. Hrsg. von Arno Mentzel-Reuters und Klaus Neitmann. (Tagungsberichte der Historischen Kommission für ost- und westpreussische Landesforschung, 28). Fibre Verlag. Osnabrück 2014

  1. Quantensprung Digitalisierung - Energiewirtschaft im 21. Jahrhundert

    Science.gov (United States)

    Thyen, Elmar

    Die Energiewende wird ohne eine umfassende Digitalisierung der Energiewirtschaft Stückwerk bleiben. Die historisch gewachsene, aus hunderten fossilen Großkraftwerken getriebene Energieversorgung hat sich durch den Zubau von mehr als einer Millionen dezentraler Erzeugungseinheiten innerhalb der vergangenen 15 Jahren radikal verändert. Zum Ausgleich von Last und Erzeugung, aber auch zum Aufbau neuer Geschäftsfelder ist die digitale Technik unverzichtbar. Ihre Möglichkeiten scheinen nahezu unbegrenzt, ihre Rolle wird in einer zukünftig nahezu vollständig elektrifizierten Gesellschaft zunehmend wichtiger werden. Neue Anbieter drängen auf den Markt und setzen die traditionelle Energiewirtschaft unter Druck. Energieversorger, die sich dem Wandel nicht stellen, drohen den Anschluss zu verpassen. Noch werden Verbundunternehmen und Stadtwerke von weitreichenden regulatorischen Vorgaben geschützt. Beispiele aus anderen Branchen zeigen aber, dass die Digitalisierung im Stande ist, regulatorische Mechanismen außer Kraft zu setzen. Zugleich verhindert die enge Regulierung und ein falsch verstandener Datenschutzbegriff in Deutschland die Entwicklung neuer Geschäftsmodelle, die energie- und volkswirtschaftlich sinnvoll wären.

  2. Travestie im alten Ägypten

    Directory of Open Access Journals (Sweden)

    prof.Magda Abdalla

    2011-01-01

    Full Text Available Der Artikel möchte versuchen zu beweisen, dass den alten Ägyptern Travestie bekannt war. In verschiedenen Texten wie Märchen, Fabeln und Liebesgedichten auf Papyri und Ostraka, finden sich Belege von Travestie. Zuerst muss jedoch betont werden, dass es einen Unterschied zwischen dem Begriff der Travestie, mit anderen Worten der Verkleidung,[1] und dem der Metamorphose, dem Verwandeln der Gestalt,[2] gibt. [1] Tra.ve´stie: f. satirisch, Verspottung eines Literaturwerkes, bei der (im Unterschied zur Parodie der Inhalt beibehalten und die Form verändert wird (frz. travestie „Verkleidung“; zu lat. trans „hinüber“+vestire, „kleiden“. G. Wahrig,. Deutsches Wörterbuch, mit einem „Lexikon der deutschen Sprachlehre“( München, 1987, 1292. Es gibt auch eine moderne Definition des Begriffes Travestie aus dem 17. Jahrhundert. Hier beinhaltet diese ein Verfahren oder eine kritische Zielsetzung.w.Karrer.,Parodie Travestie, Pastiche (München, 1977, 19, 46. [2] Me.ta.mor´pho.se Umwandlung eines Gesteins in ein anderes; Wandlung des jungen Tieres durch verschiedene äußere Stadien; Verwandlung von Menschen in Tiere, Pflanzen, Quellen usw. (Deutsches Wörterbuch, 883. الإحصائيات

  3. Das Problem der Ethnogenese im antiken Griechenland

    Directory of Open Access Journals (Sweden)

    Welwei Karl-Wilhelm

    2011-01-01

    Full Text Available Sprachwissenschaftliche Untersuchungen lassen darauf schließen, dass die historischen Dialekte der alten Hellenen erst auf griechischem Boden um und nach 1000 v. Chr. entstanden sind. Bei den frühen Zuwanderern kann es sich nur um kleinere Verbände gehandelt haben, so daß zweifelllos keine großen „Stämme“ nach Griechenland vorgedrungen sind, wie man in der älteren Forschung angenommen hat. In Griechenland haben die Zuwanderer die Suffixe -ss und -nth oder -nd nicht erst kennengelernt, sondern zumindest zum Teil schon mitgebracht und vermutlich im 3. Jahrtausend v. Chr. die allmähliche Entwicklung des späteren Griechischen eingeleitet. Impulse für die Entwicklung der materiellen Kultur gingen um 1700 v. Chr. von Kreta aus und beeinflussten in starkem Maße die mykenische Zeit mit ihren Palastsystemen, deren Zusammenbruch um 1200 v. Chr. aber nicht schon zum Ende der mykenischen Kultur führte, wenn auch die Linear B-Schrift nicht mehr benutzt wurde und die Infrastrukturen der Machtzentren zusammenbrachen. Dies war zugleich die Voraussetzung für die Bildung kleinerer Siedlungen mit neuen Führungssystemen und Sozialstrukturen sowie mit einem jeweils eigenen Identitätsbewußtsein.

  4. CORPORATIVE MOTIVES ON IMPLEMENTATION OF INTEGRATED MANAGEMENT SYSTEM (IMS

    Directory of Open Access Journals (Sweden)

    Dragan Rajkovic

    2009-09-01

    Full Text Available Integration of management systems for quality, environment, health and risk management as well as corporative social responsibilities is workable corporative approach to reduce costs, effective use of resources, higher motivation of employees and better fulfillment of requirements of social engagements and stakeholders. This paper presents contents of literature and review of a company motives on integrated management system (IMS implementation, namely factors affecting the IMS implementation.

  5. Gruppenbezogene Menschenfeindlichkeit im Sport in Sachsen-Anhalt

    OpenAIRE

    Delto, Hannes; Tzschoppe, Petra

    2016-01-01

    Mit der Querschnittsstudie „Wir und die Anderen – Gruppenbezogene Menschenfeindlichkeit im organisierten Sport in Sachsen-Anhalt“ wurde das Syndrom Gruppenbezogener Menschenfeindlichkeit im organisierten Sport untersucht. Das Konzept der Gruppenbezogenen Menschenfeindlichkeit – ausgehend von einer Ideologie der Ungleichwertigkeit – wurde von Prof. Wilhelm Heitmeyer (Universität Bielefeld) entwickelt. Die Ergebnisse ermöglichen explizite Aussagen über Ausmaß und Ursachen Gruppenbezogener Mensc...

  6. Ein Ausblick auf Supply-Chain-Management im Jahr 2016

    DEFF Research Database (Denmark)

    Wieland, Andreas

    2016-01-01

    Wie sieht Supply-Chain-Management im Jahr 2016 aus? Was erwartet uns? Vieles deutet darauf hin, dass SCM in Zukunft sogar noch mehr auf den Kunden gerichtet sein könnte als bisher.......Wie sieht Supply-Chain-Management im Jahr 2016 aus? Was erwartet uns? Vieles deutet darauf hin, dass SCM in Zukunft sogar noch mehr auf den Kunden gerichtet sein könnte als bisher....

  7. Wir und die Anderen: Gruppenbezogene Menschenfeindlichkeit im Sport in Sachsen

    OpenAIRE

    Delto, Hannes; Tzschoppe, Petra

    2015-01-01

    Mit der Querschnittsstudie "Wir und die Anderen – Gruppenbezogene Menschenfeindlichkeit im organisierten Sport in Sachsen" wurde erstmals das Syndrom Gruppenbezogener Menschenfeindlichkeit im organisierten Sport untersucht. Das Konzept der Gruppenbezogenen Menschenfeindlichkeit – ausgehend von einer Ideologie der Ungleichwertigkeit – wurde von Prof. Wilhelm Heitmeyer (Universität Bielefeld) entwickelt. Die Ergebnisse ermöglichen explizite Aussagen über Ausmaß und Ursachen Gruppenbezogener Men...

  8. Eisengehalt von Fleisch - Ermittlung des Eisengehalts im Fleisch verschiedener Tierarten

    OpenAIRE

    Westphal, Karsten; Klose, Ralf; Golze, Manfred

    2009-01-01

    Der Bericht beinhaltet Ergebnisse von Fleischuntersuchungen auf den Eisengehalt. Untersucht wurden 308 Schweinefleischproben und etwa 300 Fleischproben der Tierarten Rind, Bison, Auerochse, Büffel, Schaf, Ziege, Kaninchen, Wildschwein, Rehwild, Rotwild und Fasan. Die sächsischen Ergebnisse bestätigen Untersuchungen anderer Bundesländer und belegen den starken Rückgang des Eisengehaltes im Schweinefleisch. Er lag im Mittel bei 4,1 mg/kg Frischmasse (FM). Vor 30 Jahren lag der Eisengehalt...

  9. Die Raumdarstellung im erzählenden Werk um 1900

    OpenAIRE

    Lu, Xiaoli

    2011-01-01

    In der Literatur existiert eine eigene Welt, die mit Raum und Zeit verbunden ist. Im 19. Jahrhundert gewinnen beide, Raum und Zeit, an Bedeutung als bewusst eingesetzte Gestaltungselemente. Es bilden sich zwei Grundrichtungen heraus, eine mit dem Erzählgeschehen verknüpfte Semantisierung in der Klassik und in der Romantik und eine betonte Fixierung des Geschehens in der realen Welt durch genaue Zeit- und Ortsangaben im Realismus. Die Semantisierung von Raum und Zeit führt zu einer Bedeutungss...

  10. ifo Konjunkturprognose 2015/2016: Deutsche Wirtschaft im Aufschwung

    OpenAIRE

    Wollmershäuser, Timo; Nierhaus, Wolfgang; Berg, Tim Oliver; Breuer, Christian; Garnitz, Johanna; Grimme, Christian; Henzel, Steffen; Hristov, Atanas; Hristov, Nikolay; Meister, Wolfgang; Schröter, Felix; Steiner, Andreas; Wieland, Elisabeth; Wohlrabe, Klaus; Wolf, Anna

    2015-01-01

    Die deutsche Wirtschaft befindet sich derzeit in einem kräftigen Aufschwung. Das reale Bruttoinlandsprodukt wird in diesem Jahr voraussichtlich um 1,9% expandieren und im kommenden Jahr um 1,8%. Der private Konsum bleibt die Stütze des Aufschwungs, da die Einkommensperspektiven der privaten Haushalte aufgrund der sich weiter verbessernden Arbeitsmarktlage gut sind. Allerdings entfallen allmählich die Kaufkraftgewinne durch den Ölpreisrückgang, so dass sich die Konsumdynamik im Prognosezeitrau...

  11. Coherent ambient infrasound recorded by the global IMS network

    Science.gov (United States)

    Matoza, R. S.; Landes, M.; Le Pichon, A.; Ceranna, L.; Brown, D.

    2011-12-01

    The International Monitoring System (IMS) includes a global network of infrasound arrays, which is designed to detect atmospheric nuclear explosions anywhere on the planet. The infrasound network also has potential application in detection of natural hazards such as large volcanic explosions and severe weather. Ambient noise recorded by the network includes incoherent wind noise and coherent infrasound. We present a statistical analysis of coherent infrasound recorded by the IMS network. We have applied broadband (0.01 to 5 Hz) array processing systematically to the multi-year IMS historical dataset (2005-present) using an implementation of the Progressive Multi-Channel Correlation (PMCC) algorithm in log-frequency space. We show that IMS arrays consistently record coherent ambient infrasound across the broad frequency range from 0.01 to 5 Hz when wind-noise levels permit. Multi-year averaging of PMCC detection bulletins emphasizes continuous signals such as oceanic microbaroms, as well as persistent transient signals such as repetitive volcanic, surf, or anthropogenic activity (e.g., mining or industrial activity). While many of these continuous or repetitive signals are of interest in their own right, they may dominate IMS array detection bulletins and obscure or complicate detection of specific signals of interest. The new PMCC detection bulletins have numerous further applications, including in volcano and microbarom studies, and in IMS data quality assessment.

  12. Rotation and magnetism in intermediate-mass stars

    Science.gov (United States)

    Quentin, Léo G.; Tout, Christopher A.

    2018-06-01

    Rotation and magnetism are increasingly recognized as important phenomena in stellar evolution. Surface magnetic fields from a few to 20 000 G have been observed and models have suggested that magnetohydrodynamic transport of angular momentum and chemical composition could explain the peculiar composition of some stars. Stellar remnants such as white dwarfs have been observed with fields from a few to more than 109 G. We investigate the origin of and the evolution, on thermal and nuclear rather than dynamical time-scales, of an averaged large-scale magnetic field throughout a star's life and its coupling to stellar rotation. Large-scale magnetic fields sustained until late stages of stellar evolution with conservation of magnetic flux could explain the very high fields observed in white dwarfs. We include these effects in the Cambridge stellar evolution code using three time-dependant advection-diffusion equations coupled to the structural and composition equations of stars to model the evolution of angular momentum and the two components of the magnetic field. We present the evolution in various cases for a 3 M_{⊙} star from the beginning to the late stages of its life. Our particular model assumes that turbulent motions, including convection, favour small-scale field at the expense of large-scale field. As a result, the large-scale field concentrates in radiative zones of the star and so is exchanged between the core and the envelope of the star as it evolves. The field is sustained until the end of the asymptotic giant branch, when it concentrates in the degenerate core.

  13. Grundlegende Steuerungsverfahren im heterogenen Logistiknetz mit Kanban

    Science.gov (United States)

    Dickmann, Eva; Dickmann, Philipp; Lödding, Hermann; Möller, Niklas; Rücker, Thomas; Schneider, Herfried M.; Zäh, Michael F.

    In vielen Unternehmen werden heterogene (verschiedene) Steuerungen in einem abgestimmten Konzept kombiniert. Je nach Anwendungsfall und Rahmenbedingungen werden Kombinationen allgemein bekannter Steuerungen oder Steuerungsvarianten gemischt eingesetzt, um eine optimale Steuerung für unterschiedliche Fälle zu erreichen. Hierbei stehen neben den bekannten und weit verbreiteten Methoden, wie Material Requirements Planning (MRP) oder Kanban, auch weniger bekannte oder neue Methoden zur Auswahl, wie die Produktionssteuerung mit dezentraler, bestandsorientierter Fertigungsregelung (DBF). Kanban ist ein simples und effizientes Steuerungskonzept, das in der klassischen Form für spezifische einfache Anwendungsfälle umsetzbar ist. Hochentwickelte Steuerungsalgorithmen können helfen, komplexe Abläufe optimal abzubilden. Mit einer grundlegenden Vereinfachung der Abläufe kann allerdings in vielen Fällen ein wesentlich stärkerer und umfassender Verbesserungseffekt erzielt werden. Die wesentliche Fragestellung sollte folglich lauten: Warum ist der Ablauf nicht mit einer einfachen Steuerung wie Kanban abzubilden? Um die Vorteile des Konzepts auch in untypischen Bereichen anwenden zu können, sind jedoch verschiedene Varianten oder Kanban-ähnliche Steuerungsmethoden entstanden. Darüber hinaus sind in der Praxis hybride Steuerungen im Einsatz, welche so kombiniert werden, dass die Zusammensetzung anspruchsvolle Eigenschaftsbilder noch exakt abbildet. In der Praxis basieren die Steuerungsentscheidungen nur zu einem kleinen Teil auf den eigentlichen Steuerungsalgorithmen, wie sie uns das MRP-System zur Verfügung stellt. Moderne Steuerungswelten" schließen alle relevanten Informationsquellen in eine heterogene Entscheidungsmatrix mit ein. Letztlich zählt nicht, ob die Entscheidung auf den Informationen aus dem MRP-System oder auf Softfacts basierend getroffen wurde, sondern nur, ob die Entscheidung erfolgreich war.

  14. A New IMS Based Inter-working Solution

    Science.gov (United States)

    Zhu, Zhongwen; Brunner, Richard

    With the evolution of third generation network, more and more multimedia services are developed and deployed. Any new service to be deployed in IMS network is required to inter-work with existing Internet communities or legacy terminal users in order to appreciate the end users, who are the main drivers for the service to succeed. The challenge for Inter-working between IMS (IP Multimedia Subsystem) and non-IMS network is “how to handle recipient’s address”. This is because each network has its own routable address schema. For instance, the address for Google Talk user is xmpp:xyz@google.com, which is un-routable in IMS network. Hereafter a new Inter-working (IW) solution between IMS and non-IMS network is proposed for multimedia services that include Instant Messaging, Chat, and File transfer, etc. It is an end-to-end solution built on IMS infrastructure. The Public Service Identity (PSI) defined in 3GPP standard (3rd Generation Partnership Project) is used to allow terminal clients to allocate this IW service. When sending the SIP (Session Initial Protocol) request out for multimedia services, the terminal includes the recipient’s address in the payload instead of the “Request-URI” header. In the network, the proposed solution provides the mapping rules between different networks in MM-IW (Multimedia IW). The detailed technical description and the corresponding use cases are present. The comparison with other alternatives is made. The benefits of the proposed solution are highlighted.

  15. Ion mobility spectrometer / mass spectrometer (IMS-MS).

    Energy Technology Data Exchange (ETDEWEB)

    Hunka Deborah Elaine; Austin, Daniel E.

    2005-07-01

    The use of Ion Mobility Spectrometry (IMS) in the Detection of Contraband Sandia researchers use ion mobility spectrometers for trace chemical detection and analysis in a variety of projects and applications. Products developed in recent years based on IMS-technology include explosives detection personnel portals, the Material Area Access (MAA) checkpoint of the future, an explosives detection vehicle portal, hand-held detection systems such as the Hound and Hound II (all 6400), micro-IMS sensors (1700), ordnance detection (2500), and Fourier Transform IMS technology (8700). The emphasis to date has been on explosives detection, but the detection of chemical agents has also been pursued (8100 and 6400). Combining Ion Mobility Spectrometry (IMS) with Mass Spectrometry (MS) is described. The IMS-MS combination overcomes several limitations present in simple IMS systems. Ion mobility alone is insufficient to identify an unknown chemical agent. Collision cross section, upon which mobility is based, is not sufficiently unique or predictable a priori to be able to make a confident peak assignment unless the compounds present are already identified. Molecular mass, on the other hand, is much more readily interpreted and related to compounds. For a given compound, the molecular mass can be determined using a pocket calculator (or in one's head) while a reasonable value of the cross-section might require hours of computation time. Thus a mass spectrum provides chemical specificity and identity not accessible in the mobility spectrum alone. In addition, several advanced mass spectrometric methods, such as tandem MS, have been extensively developed for the purpose of molecular identification. With an appropriate mass spectrometer connected to an ion mobility spectrometer, these advanced identification methods become available, providing greater characterization capability.

  16. Instrumentale Spielformeln und Vokale Verzierungen im 16.Jahrhundert

    Directory of Open Access Journals (Sweden)

    Göllner, Theodor

    2001-12-01

    Full Text Available In the music of the 16th century, stereotype four-note formulas are found in the instrumental as well as in the vocal idiom. Although frequently identical in appearance, their functions are very different. While indispensable in the instrumental idiom, particularly in keyboard music, where they represent the very essence of instruction in 15th-century organ treatises and fundamenta, they appear in vocal music only as additions to finished compositions or existing practices. What amounts to an absolute necessity in one case is merely an ornamental supplement in the other. In vocal music it is treated as a matter of performance carried out by a qualified soloist and limited to the musical centers of Italy. The present article raises the question as to how the genuinely instrumental and widely spread keyboard practice made its impact on the vocal ornaments of the singer, whose primary concern is the musical communication of language.

    [de] Die in der Musik des 16. Jahrhunderts im Instrumentalen wie im Vokalen vorkommenden, meist viertönigen, stereotypen Formeln sind zwar in beiden Bereichen weitgehend identisch, doch von höchst unterschiedlicher Funktion. Während sie im Instrumentalen, besonders in der Tastenmusik, unverzichtbar sind und schon im 15. Jahrhundert den Kern der Orgeltraktate und Fundamenta bilden, treten sie im Vokalen zu einer fertigen Komposition oder bestehenden Praxis hinzu. Was im einen Fall eine unbedingte Notwendigkeit ist, wird im anderen zu einem nachträglichen Ornament, das sich oft erst bei der Aufftührung einstellt, den qualifizierten Solosänger voraussetzt und auf die musikalischen Zentren Italiens konzentriert war. Der Artikel versucht zu klären, wie sich das genuin instrumentale, allgemein verbreitete Tastenspiel auf die spezielle Verzierungskunst des Sängers auswirkt, dessen primäre Aufgabe es ist, Sprache musikalisch zu vermitteln.

  17. Handover Based IMS Registration Scheme for Next Generation Mobile Networks

    Directory of Open Access Journals (Sweden)

    Shireen Tahira

    2017-01-01

    Full Text Available Next generation mobile networks aim to provide faster speed and more capacity along with energy efficiency to support video streaming and massive data sharing in social and communication networks. In these networks, user equipment has to register with IP Multimedia Subsystem (IMS which promises quality of service to the mobile users that frequently move across different access networks. After each handover caused due to mobility, IMS provides IPSec Security Association establishment and authentication phases. The main issue is that unnecessary reregistration after every handover results in latency and communication overhead. To tackle these issues, this paper presents a lightweight Fast IMS Mobility (FIM registration scheme that avoids unnecessary conventional registration phases such as security associations, authentication, and authorization. FIM maintains a flag to avoid deregistration and sends a subsequent message to provide necessary parameters to IMS servers after mobility. It also handles the change of IP address for user equipment and transferring the security associations from old to new servers. We have validated the performance of FIM by developing a testbed consisting of IMS servers and user equipment. The experimental results demonstrate the performance supremacy of FIM. It reduces media disruption time, number of messages, and packet loss up to 67%, 100%, and 61%, respectively, as compared to preliminaries.

  18. A SURVEY ON INDIAN EXPERIENCE ON INTEGRATED MANAGEMENT STANDARDS (IMS

    Directory of Open Access Journals (Sweden)

    H. Khanna

    2009-09-01

    Full Text Available Adoption of management systems standards is a key issue in manufacturing industry in India. Following the global trend quality and environmental issues are gaining importance. However the number of ISO 14001 certified companies are much less in India as compared to ISO 9001. The integration of ISO 14001 with ISO 9001 may help companies to sustain competitive advantage and overcome disappointments with quality standards and in turn encourage companies to adopt good environmental practices. The aim of this research is to study the implementation of integrated management standards (IMS by the manufacturing organizations in India. The different aspects of integration and benefits of IMS implementation are analyzed. This r esearch is based on empirical study carried out in Indian manufacturing firms, involving the application of a questionnaire. This questionnaire was tested on 50 manufacturing companies in India. The study reveals that focus on stakeholders; top management commitment and training are critical success factors for implementation of IMS. The main benefits of integration are discussed. The small sample size is one of the major limitations of this study. The paper informs the managers in manufacturing organizations and practitioners of management system standards especially in developing countries about IMS and will enable them to adopt IMS in future so that those organizations may not implement multiple and overlapping MSS(Management System Standards.

  19. Transplantate und Implantate im Mittelohrbereich - Teil 1 (Stand 2002)

    Science.gov (United States)

    Kempf, Hans-Georg; Lenarz, Thomas; Eckert, Karl-Ludwig

    In Deutschland leben ungefähr 12 Millionen Menschen, die an einer ein- oder beidseitigen Schwerhörigkeit leiden. Diese kann angeboren oder im Laufe des Lebens erworben sein. Klinisch und therapeutisch wichtig ist die Unterscheidung, ob die Ursache der Schwerhörigkeit im Bereich des Mittelohres, d. h. der Schallübertragung, oder im Bereich des Innenohres, der Hörnerven und der zentralen Hörbahnabschnitte, d. h. der Schallempfindung, liegt. 2,5 Millionen Schwerhörige haben dabei das Problem der Schallübertragung, d.h. die Störung liegt im Mittelohrbereich, und hier kann man in der Regel mit operativen, mikrochirurgisch durchgeführten Massnahmen helfen [1, 2]. Im Vordergrund steht als Ursache hier die chronische Mittelohrentzündung, die sich als Perforation des Trommelfells, als Defekt oder Unterbrechung der Gehörknöchelchen oder auch als Cholesteatom, einer sogenannte Knocheneiterung äussern kann [3]. Therapeutisch und damit als Prinzip der operativen Hörverbesserung steht primär der Verschluss des Trommelfells oder eine Rekonstruktion der Gehörknöchelchen an.

  20. Aggregation und Management von Metadaten im Kontext von Europeana

    Directory of Open Access Journals (Sweden)

    Gerda Koch

    2017-09-01

    Full Text Available Mit dem In-Beziehung-Setzen und Verlinken von Daten im Internet wird der Weg zur Umsetzung des semantischen Webs geebnet. Erst die semantische Verbindung von heterogenen Datenbeständen ermöglicht übergreifende Suchvorgänge und späteres „Machine Learning“. Im Artikel werden die Aktivitäten der Europäischen Digitalen Bibliothek im Bereich des Metadatenmanagements und der semantischen Verlinkung von Daten skizziert. Dabei wird einerseits ein kurzer Überblick zu aktuellen Forschungsschwerpunkten und Umsetzungsstrategien gegeben, und darüber hinaus werden einzelne Projekte und maßgeschneiderte Serviceangebote für naturhistorische Daten, regionale Kultureinrichtungen und Audiosammlungen beschrieben.

  1. Information management system study results. Volume 1: IMS study results

    Science.gov (United States)

    1971-01-01

    The information management system (IMS) special emphasis task was performed as an adjunct to the modular space station study, with the objective of providing extended depth of analysis and design in selected key areas of the information management system. Specific objectives included: (1) in-depth studies of IMS requirements and design approaches; (2) design and fabricate breadboard hardware for demonstration and verification of design concepts; (3) provide a technological base to identify potential design problems and influence long range planning (4) develop hardware and techniques to permit long duration, low cost, manned space operations; (5) support SR&T areas where techniques or equipment are considered inadequate; and (6) permit an overall understanding of the IMS as an integrated component of the space station.

  2. Environmental trace analysis by means of supersensitive GC-IMS

    International Nuclear Information System (INIS)

    Leonhardt, J.W.

    1997-01-01

    The effective control of pollutants in ambient air requires their fast in situ identification and concentration determination of chemical compounds in the range of micrograms per m 3 . There are attempts to use conventional analytical techniques as portable GC and GC-MS. These systems are relatively expensive. A new supersensitive ion Mobility Sensor (IMS) was developed and checked by IUT Ltd, which meets the new demands. The use of tritium sources is an advantage in comparison with other IMS being equipped by nickel-63, the application of which is rather critical in respect of the radiation protection. On the other hand an integrated separation column allows to reduce interferences by matrix effects. The technical parameters of the IUT GC- IMS and some of its most important applications are briefly presented

  3. Wozu und wie kooperative Arbeitsformen im studienbegleitenden Deutschunterricht?

    Directory of Open Access Journals (Sweden)

    Karmelka Barić

    2016-04-01

    Full Text Available Ausgehend von einer Reflexion über die im Beruf und im Leben notwendigen Kompetenzen in der Kommunikation sowie von der Überzeugung, dass es notwendig ist, diese Kompetenzen schon im Studium durch geeignete Arbeitsverfahren und Themen zu entwickeln, werden Kooperation und Autonomie fördernde Arbeitsformen für den studienbegleitenden Deutsch- und Fremdsprachenunterricht (SDU/SFU vorgestellt. Diese Arbeitsformen sind auf andere Sprachen übertragbar und aus dem Lehrwerk Mit Deutsch studieren arbeiten leben A2/B1 (Lévy-Hillerich, Serena, Barić & Cickovska 2010 und der dazu gehörenden Lernplattform entnommen. Das Lehrwerk selbst ist eine Umsetzung der SDU-Rahmencurricula, die im Laufe von über zwanzig Jahren in zehn Ländern im Rahmen eines 1994 am Goethe-Institut Warschau begonnenen Hochschulprojekts und der daraus entstandenen Forschungstätigkeit entstanden sind. Grundlage des Projekts ist ein ganzheitlicher soziopädagogischer Ansatz, der LernerInnen als Menschen betrachtet, die im Präsenz- oder im virtuellen Unterricht in der Sprache und durch die Sprache fach- und sprachübergreifende Kooperationsfähigkeiten entwickeln, die sich später im Leben in der Gesellschaft auswirken. Nach der Vorstellung des Projekts und seiner wissenschaftlichen Hintergründe im ersten Teil des Beitrags werden im zweiten Teil die sich aus dem Ansatz ergebenden Arbeitsformen untersucht: Dabei werden die sich dazu eignenden Themen, die Lernhilfen für StudentInnen, die den LehrerInnen zufallenden Rollen sowie die Ansprüche an Lehrbücher/Unterrichtsmaterialien und Online-/Blended-Learning-Lernszenarien besprochen. Der abschließende Überblick im dritten Teil über die Schwierigkeiten, die beim kooperativen Lernen im SDU/SFU auftreten können, ist gleichzeitig eine offenbleibende Frage danach, wie LehrerInnen aus- und fortgebildet werden sollten, um sich den Anforderungen einer sich dauernd verändernden Lernlandschaft stellen zu können.   The paper

  4. Environmental trace analysis by means of supersensitive GC-IMS

    Energy Technology Data Exchange (ETDEWEB)

    Leonhardt, J.W. [IUTLimited, Berlin, (Germany)

    1997-10-01

    The effective control of pollutants in ambient air requires their fast in situ identification and concentration determination of chemical compounds in the range of micrograms per m{sup 3}. There are attempts to use conventional analytical techniques as portable GC and GC-MS. These systems are relatively expensive. A new supersensitive ion Mobility Sensor (IMS) was developed and checked by IUT Ltd, which meets the new demands. The use of tritium sources is an advantage in comparison with other IMS being equipped by nickel-63, the application of which is rather critical in respect of the radiation protection. On the other hand an integrated separation column allows to reduce interferences by matrix effects. The technical parameters of the IUT GC- IMS and some of its most important applications are briefly presented 6 refs., 1 tab., 5 figs.

  5. Minería de imágenes

    OpenAIRE

    Fernández, Jacqueline; Miranda, Natalia Carolina; Guerrero, Roberto A.; Piccoli, María Fabiana

    2006-01-01

    Durante los últimos años, la proliferación de los medios digitales ha creado la necesidad del desarrollo de herramientas para la eficiente representación, acceso y recuperación de información visual. La minería de imágenes se ha convertido en una importante rama de investigación a causa del potencial que posee en descubrir patrones característicos a partir de un importante conjunto de imágenes. No obstante, la minería de imágenes es más que una simple extensión de la minería de datos al domin...

  6. Facebook Ethnography: The Poststructural Ontology of Transnational (Im Migration Research

    Directory of Open Access Journals (Sweden)

    David Joseph Piacenti PhD

    2014-02-01

    Full Text Available This theoretical article discusses the creative utility of Facebook as a new ethnographic tool in which to study transnational (im migration. Facebook ethnography allows the (im migration researcher to transcend the four structural dualities that constrain transnational ethnographic research: (a geographic constraints, (b travel funding constraints, (c travel time constraints, and (d the logistical constraints of entrée into new ethnographic contexts. Facebook ethnography also allows the qualitative researcher to temporarily transcend the ontological structuralist dualities of traditional research methods, producing a new poststructural epistemological and ontological methodology.

  7. IMS IN SMES - REASONS, ADVANTAGES AND BARRIERS ON IMPLEMENTATION

    Directory of Open Access Journals (Sweden)

    Dragan Rajković

    2008-09-01

    Full Text Available Appearance of a number of management systems with various and sometimes divergent demands, demands for revise of optimal strategy on implementation of these standards in small and medium-sized enterprises (SMEs and the attempt on their integration into integrated management system are suggested even more. Firstly question on choice and reasons for implementation of standards is raised. Management and employees expect benefits on the implementation and they pass and minimize the implementation barriers. Basic concept on integrated management system (IMS into SMEs and analyse on reasons, advantages and barriers at IMS implementation are presented in this paper.

  8. Reconocimiento de imágenes utilizando redes neuronales artificiales

    OpenAIRE

    García García, Pedro Pablo

    2013-01-01

    Este trabajo describe el proceso de extracción de patrones característicos de imágenes,mediante la ayuda de Redes Neuronales Artificiales. La información de la Red Neuronal junto con datos adicionales de las imágenes, serán almacenados en una base de datos y consumidos por un servicio web. Un teléfono móvil con sistema operativo Android consumirá la información almacenada en el servicio web. Posteriormente al realizar una captura de imagen con la cámara del teléfono, este procesará la imag...

  9. Frauen im Netz weltweit – ausgegrenzt und mittendrin

    Directory of Open Access Journals (Sweden)

    Sigrid Peuker

    2003-03-01

    Full Text Available Mit dem Global Center for Women’s Studies and Politics (GLOW ist das Feministische Institut der Heinrich-Böll-Stiftung 1998 online gegangen. Mit diesem Schritt wurden Fragen nach den Möglichkeiten und Grenzen sowie nach den Gestaltungsräumen virtueller Kommunikation für Frauen zentral. Mit feminist_spaces. Frauen im Netz. Diskurse – Communities – Visionen, legt die Heinrich-Böll-Stiftung zusammen mit dem Feministischen Institut Antworten aus internationaler Perspektive vor. Das Buch geht auf die gleichnamige zweitätige Konferenz in Berlin im November 2001 zurück.

  10. Hinderniserkennung und -verfolgung mit einer PMD-kamera im automobil

    Science.gov (United States)

    Schamm, Thomas; Vacek, Stefan; Natroshvilli, Koba; Marius Zöllner, J.; Dillmann, Rüdiger

    Die Detektion von Hindernissen vor dem Automobil ist eine Hauptanforderung an moderne Fahrerassistenzsysteme (FAS). In dieser Arbeit wird ein System vorgestellt, das mit Hilfe einer PMDKamera (Photomischdetektor) Hindernisse auf der Fahrspur erkennt und deren relevante Parameter bestimmt. Durch die PMD-Kamera werden zunächst 3D-Tiefenbilder der Fahrzeugumwelt generiert. Nach einem initialen Filterprozess werden im Tiefenbild mit Hilfe eines Bereichswachstumsverfahrens Hindernisse gesucht. Zur Stabilisierung des Verfahrens und zur Parameterberechnung wird ein Kaiman Filter eingesetzt. Das Ergebnis ist eine Liste aller Hindernisse im Fahrbereich des Automobils.

  11. Im Wind / Mari Vallisoo ; tõlk. Gisbert Jänicke

    Index Scriptorium Estoniae

    Vallisoo, Mari, 1950-2013

    2003-01-01

    Sisu: Im Wind = Tuulega ; Zwei Frauen = Kaks naist ; In Gedanken an Aleksander Levin = aleksander Levinile mõteldes ; Jetzt im Dunkel = Nüüd pimedas ; Fragen = Küsimused ; Der Zwillingsbruder = Kaksikvend

  12. Regelungen im Verkehr mit Lebensmitteln und Bedarfsgegenständen in Deutschland

    Science.gov (United States)

    Thomas, Gundula; Freund, Astrid; Gründig, Friedrich

    Im Zuge der Globalisierung von Produktion und Handel ändert sich auch der Charakter der Vorschriften im Lebensmittelrecht. Zunehmend treten internationale Rechtsbestimmungen, Abkommen, Standards und andere Normen an die Stelle nationaler Regelungen.

  13. International Monitoring system (IMS) build-up in Africa: Current status and the way forward

    International Nuclear Information System (INIS)

    Basham, P.

    2002-01-01

    The complete IMS verification system for primary and auxiliary seismic together with that of radionuclide, hydroacoustic and infrasound is plotted on a global map and Africa in particular showing its status. IMS situation in East and Southern Africa is included

  14. Volatility study of [C1C1im][NTf2] and [C2C3im][NTf2] ionic liquids

    International Nuclear Information System (INIS)

    Rocha, Marisa A.A.; Ribeiro, Filipe M.S.; Schröder, Bernd; Coutinho, João A.P.; Santos, Luís M.N.B.F.

    2014-01-01

    Highlights: • Vapor pressures of [C 1 C 1 im][NTf 2 ] and [C 2 C 3 im][NTf 2 ] ionic liquids are reported. • [C 1 C 1 im][NTf 2 ] presents higher enthalpy and entropy of vaporization than expected. • The high volatility of [C 2 C 3 im][NTf 2 ] is a result from its asymmetric character. -- Abstract: Vapor pressures of 1,3-dimethylimidazolium bis(trifluoromethylsulfonyl)imide, ([C 1 C 1 im][NTf 2 ]) and 1-ethyl-3-propylimidazolium bis(trifluoromethylsulfonyl)imide, ([C 2 C 3 im][NTf 2 ]) ionic liquids were measured as a function of temperature using a Knudsen effusion apparatus combined with a quartz crystal microbalance. Enthalpies and entropies of vaporization were derived from the fitting of vapor pressure and temperature results to the Clarke and Glew equation. [C 1 C 1 im][NTf 2 ] presents a higher enthalpy and entropy of vaporization than the neighboring members of the series. The enthalpy of vaporization of [C 2 C 3 im][NTf 2 ] lies in between the asymmetric and symmetric ionic liquid series, reflecting a decrease in the electrostatic interactions due to a decrease of the charge accessibility between the ionic pairs when the methyl group is replaced by an ethyl group. The obtained higher volatility of [C 2 C 3 im][NTf 2 ] arises from its asymmetric character, leading to an higher entropic contribution that compensates the enthalpic penalty. The border conditions ([C 1 C 1 im][NTf 2 ], [C 2 C 1 im][NTf 2 ] and [C 2 C 2 im][NTf 2 ]), topology ([C 2 C 3 im][NTf 2 ]) and symmetry/asymmetry of the ILs effect were evaluated and rationalized based on a comparative analysis of the thermodynamic properties, enthalpies and entropies of vaporization

  15. Mapping IMS Learning Design and Moodle. A first understanding

    NARCIS (Netherlands)

    Burgos, Daniel; Tattersall, Colin; Dougiamas, Martin; Vogten, Hubert; Koper, Rob

    2006-01-01

    Please, cite this publication as follows: Burgos, D., Tattersall, C., Dougiamas, M., Vogten, H., & Koper, E. J. R. (2006). Mapping IMS Learning Design and Moodle. A first understanding. Proceedings of Simposo Internacional de Informática Educativa (SIIE06), León, Spain: IEEE Technical Committee on

  16. Collaborative Research: Calibration for IMS Stations in Eastern Asia

    Science.gov (United States)

    2007-07-01

    Atomnaya Energia , Vol.87, Issue 3, 1989 (in Russian). 142 BondAr, I. Combining 1-D models for regional calibration, in Proceedings of a Workshop on IMS...Zelentsov and V.N. Mikhailov, Characteristics of 96 underground nuclear explosions at the Semipalatinsk Test Site, Atomaya Energia , (in Russian), Vol. 67

  17. EFEKTIVITAS MEDIA PEMBELAJARAN IM3 DITINJAU DARI MOTIVASI BELAJAR

    Directory of Open Access Journals (Sweden)

    J. Handhika

    2012-10-01

    Full Text Available Penelitian ini bertujuan untuk mengetahui perbedaan penggunaan media pembelajaran IM3 berbasis flash dan media MS. Power Point terhadap prestasi belajar IPA-Fisika. Hasil penelitian  menunjukkan bahwa siswa yang diajar menggunakan media IM3 berbasis flash memberikan rata-rata prestasi lebih baik dibandingkan dengan siswa yang diajar menggunakan power point. Siswa dengan motivasi belajar tinggi menghasilkan rata-rata prestasi lebih baik daripada siswa dengan motivasi belajar rendah, serta terdapat interaksi motivasi belajar dengan media pembelajaran terhadap prestasi belajar IPA-Fisika.   This study aims to determine differences in the use of flash-based IM3 learning media and MS media. Power Point to IPA-Physics learning achievement. Results showed that students who were taught using flash-based media IM3 gives an average performance better than students who were taught using the power point. Students with high motivation to learn the average yield better performance than students with low learning motivation, and there is interaction with the medium of learning motivation toward science learning achievement-Physics.

  18. Address Translation Problems in IMS Based Next Generation Networks

    Directory of Open Access Journals (Sweden)

    Balazs Godor

    2006-01-01

    Full Text Available The development of packed based multimedia networks reached a turning point when the ITU-T and the ETSIhave incorporated the IMS to the NGN. With the fast development of mobile communication more and more services andcontent are available. In contrast with fix network telephony both the services and the devices are personalized in the “mobileworld”. Services, known from the Internet - like e-mail, chat, browsing, presence, etc. – are already available via mobiledevices as well. The IMS originally wanted to exploit both the benefits of mobile networks and the fancy services of theInternet. But today it is already more than that. IMS is the core of the next generation telecommunication networks and abasis for fix-mobile convergent services. The fact however that IMS was originally a “mobile” standard, where IPv6 was notoddity generated some problems for the fix networks, where IPv4 is used. In this article I give an overview of these problemsand mention some solutions as well.

  19. I'm Positive: Growing Up with Self-Esteem.

    Science.gov (United States)

    Kansas State Univ., Manhattan. Cooperative Extension Service.

    This document presents "I'm Positive: Growing Up With Self-Esteem," an informal, personal study course designed to strengthen the reader's ability to nurture self-esteem in children from birth through adolescence. Special emphasis is given to four parenting skills: acceptance, encouragement, empowerment, and love. Weekly activities are provided…

  20. Sixteenth Meeting of the IMS Study Group "Cantus Planus"

    Czech Academy of Sciences Publication Activity Database

    Vozková, Jana

    2011-01-01

    Roč. 48, 2-3 (2011), s. 310-311 ISSN 0018-7003. [Sixteenth Meeting of the IMS Study Group “Cantus Planus”. Vídeň, 21.08.2011–27.08.2011] Institutional research plan: CEZ:AV0Z90580513 Keywords : plainchant * annual conference * International Musicological Society Subject RIV: AL - Art, Architecture, Cultural Heritage

  1. Ausländische Direktinvestitionen und Technologietransfer im angolanischen Energiesektor

    Directory of Open Access Journals (Sweden)

    2016-04-01

    Full Text Available Dem Zusammenhang von ausländischen Direktinvestionen (Foreign Direct Investment, FDI und Technologietransfer wird sowohl in der Forschung als auch in der politischen Analyse große Bedeutung zugeschrieben. Zahlreiche Veröffentlichungen belegen, dass FDI den Transfer von und/oder den Zugang zu Technologien erleichtert. Allerdings gibt es zu wenige empirische Studien, die diesen Zusammenhang in Bezug auf die Wirtschaft afrikanischer Staaten untersuchen. Der Autor will diese Lücke zu einem kleinen Teil schließen, indem er die Bedeutung des Technologietransfers durch den Zufluss von FDI im Energiesektor Angolas ermittelt. Seine Analyse basiert auf qualitativer Forschung in Angola im Jahr 2014. Er zeigt auf, dass sich die Erzeugung von Energie(trägern und die Verteilungsinfrastruktur - maschinelle Ausrüstung und Qualifizierung - durch den Zufluss von FDI erheblich entwickeln konnte. Allerdings gebe es keinen Beleg dafür, dass dieser Zufluss die endogenen wissenschaftlichen und technologischen Forschungspotenziale im angolanischen Energiesektor gefördert hat. Der Autor empfiehlt politische Maßnahmen zur Förderung dieser Fähigkeiten, insbesondere im Bereich der Produktion.

  2. First inter metatarsal (IM) angles in Nigerians and their relationship ...

    African Journals Online (AJOL)

    Background: No age is immune to the deformity known as Hallux valgus as it has been proven that 50% of adults developed it during adolescence, while 40% of juveniles developed it before the age of 10.5 years. Aim: To determine from radiographs the normal value of the first inter metatarsal (IM) angle and to establish if ...

  3. Using IMS Learning Design to model collaborative learning activities

    NARCIS (Netherlands)

    Tattersall, Colin

    2006-01-01

    IMS Learning Design provides a counter to the trend towards designing for lone-learners reading from screens. It guides staff and educational developers to start not with content, but with learning activities and the achievement of learning objectives. It recognises that learning can happen without

  4. MATTHEW'S SITZ IM LEBEN AND THE EMPHASIS ON THE TORAH

    African Journals Online (AJOL)

    Acta Theologica ... such as would be expected from letters (Bauckham 1998:48). Yet the ... it in other words; the Sitz im Leben der alten Kirche can indirectly be .... 4 Along with most scholars I assume that Matthew was written some time after.

  5. Distance tracking scheme for seamless handover in IMS-based ...

    African Journals Online (AJOL)

    This paper proposes a fast and seamless handover scheme for systems based on IP Multimedia Subsystem (IMS) architectural framework with Universal Mobile Telecommunications System (UMTS) access network. In the scheme the location, direction and movement pattern of a Mobile Node (MN) in a network cell are ...

  6. Choosing the Right Free IM Providers and Clients for Your Library

    Science.gov (United States)

    Izenstark, Amanda K.

    2009-01-01

    With virtual library services increasing, public services librarians may find themselves with questions such as: What instant messaging services (IM) are available? Which IM service would best suit my patrons' needs? Which IM service best suits my library's technology profile? This column describes the features and functionality of major instant…

  7. Pengaruh Intensitas Mengakses Twitter Duta Im3 terhadap Kepuasan Pengalaman Adopsi dan Kepuasan Pengalaman Adopsi terhadap Keputusan Penggunaan Program Im3

    OpenAIRE

    Ayu Kinasih, Diyan Hafdinovianti; Pradekso, Tandiyo; Setiabudi, Djoko

    2014-01-01

    Nama : Diyan H Ayu KinasihNIM : D2C009029Judul : Pengaruh Intensitas Mengakses Twitter Duta IM3 terhadapKepuasan Pengalaman Adopsi dan Kepuasan PengalamanAdopsi terhadap Keputusan Penggunaan Program IM3ABSTRAKTwitter sebagai salah satu promotion tools yang digunakan oleh PTIndosat Tbk, diharapkan dapat memperkenalkan program-program serta eventyang dilakukan oleh Indosat. Melalui duta IM3 sebagai brand ambassador, Indosatmencoba meraih pasar anak muda dengan melakukan kegiatan promosi.Tipe pe...

  8. Usability test of the ImPRO, computer-based procedure system

    International Nuclear Information System (INIS)

    Jung, Y.; Lee, J.

    2006-01-01

    ImPRO is a computer based procedure in both flowchart and success logic tree. It is evaluated on the basis of computer based procedure guidelines. It satisfies most requirements such as presentations and functionalities. Besides, SGTR has been performed with ImPRO to evaluate reading comprehension and situation awareness. ImPRO is a software engine which can interpret procedure script language, so that ImPRO is reliable by nature and verified with formal method. One bug, however, had hidden one year after release, but it was fixed. Finally backup paper procedures can be prepared on the same format as VDU in case of ImPRO failure. (authors)

  9. Estudios por imágenes en reumatismo

    Directory of Open Access Journals (Sweden)

    Muñoz Ch. Sara, Dra.

    2012-07-01

    Los grandes avances tecnológicos de la última década han mejorado la calidad y cantidad de información que las distintas técnicas aportan, especialmente la RM; esto hace vislumbrar un cambio significativo en el diagnóstico por imágenes, ya que en el futuro no solo estará basado en los cambios morfológicos en órganos y tejidos; las imágenes obtenidas aportarán información bioquímica, molecular y fisiológica de los procesos patológicos facilitando su diagnóstico aun más precoz.

  10. Geschichtsbezogene und rechtspolitische Polonica im Bücherbestand Gottfried Lengnichs

    Directory of Open Access Journals (Sweden)

    Iwona Imańska

    2017-11-01

    Full Text Available Gottfried Lengnich, der Historiker und Syndikus der Stadt Danzig aus dem 18. Jahrhundert, hinterließ eine Büchersammlung mit über viertausend Büchern, die nach seinem Tode in zwei Auktionen im Juli und November 1774 versteigert werden sollten. Die Auktionskataloge befinden sich in der Staatsbibliothek zu Berlin – Stiftung Preußischer Kulturbesitz und sind auch online zugänglich. Wegen wissenschaftlicher Interessen Lengnichs befanden sich in seiner Bibliothek ca. 600 Polonica-Drucke, die meisten davon waren Abhandlungen im Themenfeld Geschichte, Recht und Politik. Die Analyse dieses Fragments des Bücherbestands Lengnichs bewies, dass der Syndikus eine perfekte Arbeitswerkstatt für sich schuf, indem er die Werke der meisten wichtigsten polnischen und fremden Autoren, die über die Geschichte und die Gesetzgebung Polens und Preußens schrieben, sammelte.

  11. Synthesis of Cyclic Py-Im Polyamide Libraries

    OpenAIRE

    Li, Benjamin C.; Montgomery, David C.; Puckett, James W.; Dervan, Peter B.

    2013-01-01

    Cyclic Py-Im polyamides containing two GABA turn units exhibit enhanced DNA binding affinity, but extensive studies of their biological properties have been hindered due to synthetic inaccessibility. A facile modular approach toward cyclic polyamides has been developed via microwave-assisted solid-phase synthesis of hairpin amino acid oligomer intermediates followed by macrocyclization. A focused library of cyclic polyamides 1–7 targeted to the androgen response element (ARE) and the estrogen...

  12. Agrupador de imágenes multimodal no supervisado

    OpenAIRE

    Pérez Hernando, Jesús

    2013-01-01

    Trabajo Fin de Máster donde se implementa un método multimodal para la clasificación de imágenes sin etiquetar y sin intervención humana. Treball Fi de Màster on s'implementa un mètode multimodal per a la classificació d'imatges sense etiquetar i sense intervenció humana. Master thesis for the Computer Science Engineering program.

  13. Topologieoptimierung im Creo-Umfeld mit ProTopCI

    OpenAIRE

    Simmler, Urs

    2016-01-01

    Wikipedia umschreibt die Topologieoptimierung als ein computerbasiertes Berechnungsverfahren, durch welches eine günstige Grundgestalt (Topologie) für Bauteile unter mechanischer Belastung ermittelt werden kann. Durch die Verwendung von 3D-Druck-Verfahren wird die Gestaltung der Komponenten revolutioniert, weil diese nicht mehr abhängig vom Fertigungsverfahren sind. Dabei werden auch optimale Gitterstrukturen innerhalb der Komponenten immer wichtiger. Diese neuen Herausforderungen können im C...

  14. Simulation von Heißrubbeln im Gesamtbremssystem

    OpenAIRE

    Könning, Maximilian

    2017-01-01

    Bremsenrubbeln ist eine fremderregte Schwingung des Bremssystems, die es in der Ent-wicklung zu vermeiden gilt. Eine Wirkungskette des Heißrubbelns wurde in einem Vorgängerprojekt erarbeitet und bildet die Grundlage für diese Arbeit. Die Entstehung des Heißrubbelns besteht aus verschiedenen Phasen und beginnt mit einer initialen Verwellung. Daraus resultieren im Bremssystem Bremsmomentschwankungen und die schwankende Reibleistung führt wiederum zu einem Wachstum der Bremsscheibenverformung. ...

  15. Frauen mit Eßstörungen im Ausdauersport

    OpenAIRE

    Bös, Annette

    2003-01-01

    Die vorliegende Arbeit untersucht das Phänomen Eßstörungen bei Ausdauersportlerinnen. Auf dem Hintergrund des identitätstheoretischen Ansatzes von Stahr et al. (1995) geht es um die Frage nach den Hauptverursachungsmomenten der Eßstörungen von sieben jungen Sportlerinnen. Im Rahmen einer qualitativen Sozialforschungsarbeit wurden sieben Athletinnen in einem problemzentrierten Interview zur Phase ihrer Eßstörungserkrankung befragt. Die Arbeit setzt sich zum Ziel, einen Beitrag zur systematisch...

  16. Aufgabenbezogene Differenzierung und Entwicklung des verbalen Selbstkonzepts im Anfangsunterricht

    OpenAIRE

    Lipowsky, Frank; Kastens, Claudia; Lotz, Miriam; Faust, Gabriele

    2011-01-01

    Die vorliegende Studie untersucht, wie sich aufgabenbezogene Differenzierung im Deutschunterricht auf die Entwicklung des verbalen Selbstkonzepts von Erst- und Zweitklässlern (Lesen und Schreiben) auswirkt. Die untersuchte Stichprobe setzt sich aus 735 Schülern des ersten Schuljahres zusammen, die 38 Klassen an staatlichen und privaten Grundschulen besuchen und die bis zum Ende des zweiten Schuljahres in ihrer Entwicklung untersucht wurden. Die Ergebnisse zeigen sowohl einen indirekten als au...

  17. Mediengestaltung im interkulturellen Vergleich. Eine Studie zu Mikroaspekten der Globalisierung

    OpenAIRE

    Vera-Stahl, Gilda

    2017-01-01

    Die vorliegende Arbeit befasst sich mit dem interkulturellen Vergleich von lokalen Werbespots aus Deutschland und Ecuador. Im Zentrum des Interesses steht die implizite Dimension der technisch gebundenen audiovisuellen Kommunikation, d.h. die Art und Weise, wie die Kommunikationsmedien – das Bild, die Sprache und die Musik – bei der Gestaltung der Spots verwendet werden. Ausgangspunkt der Untersuchung bildet der Ansatz von Nothnagel/Vera (2004, 2005), dass Habitusformen der Face-to-Face-...

  18. Collecting Virtual Reference Statistics with an IM Chat-Bot

    Directory of Open Access Journals (Sweden)

    Mason R.K. Hall

    2008-06-01

    Full Text Available A perennial problem in libraries is capturing accurate statistics. This article addresses this problem with the creative use of Web 2.0 tools: Meebo and AOL Instant Messenger. It describes the development and implementation of an instant messaging "stat-bot" that prompts staff to record virtual reference statistics via IM. Step-by-step guidelines and the perl script are provided.

  19. Business-Intelligence-Systeme im Spannungsfeld zwischen Usability und Sicherheit

    OpenAIRE

    Hinck, Thorsten

    2010-01-01

    Business-Intelligence-Systeme stehen im Spannungsfeld zwischen Usability und Sicherheit. Die Gefahren und Sicherheitsmaßnahmen für Informationssysteme werden ermittelt und ökonomisch in Bezug zur Gebrauchstauglichkeit gesetzt. Es entsteht ein Sicherheitsprofil für Business-Intelligence-Systeme. Business-Intelligence-Systems are in tension between Usability and IT-Security. Risks and safety measures of informationsystems are defined and set in (economic) regard to Usability. A security prof...

  20. QUARTERLY TECHNICAL REPORT FOR IN-MINE (IM) SYSTEM

    International Nuclear Information System (INIS)

    Zvi H. Meiksin

    2001-01-01

    A circuit that had been earlier lab-tested to eliminate multi-antenna interference in the In-mine (IM) system was fabricated, implemented and tested successfully in a system setting. An adaptive, tracking comb-filter for the through-the-earth (TTE) communications system was designed and implemented. This resulted in noticeable noise reduction. Studies for multi-channel transmission have begun

  1. ImSET: Impact of Sector Energy Technologies

    Energy Technology Data Exchange (ETDEWEB)

    Roop, Joseph M.; Scott, Michael J.; Schultz, Robert W.

    2005-07-19

    This version of the Impact of Sector Energy Technologies (ImSET) model represents the ''next generation'' of the previously developed Visual Basic model (ImBUILD 2.0) that was developed in 2003 to estimate the macroeconomic impacts of energy-efficient technology in buildings. More specifically, a special-purpose version of the 1997 benchmark national Input-Output (I-O) model was designed specifically to estimate the national employment and income effects of the deployment of Office of Energy Efficiency and Renewable Energy (EERE) -developed energy-saving technologies. In comparison with the previous versions of the model, this version allows for more complete and automated analysis of the essential features of energy efficiency investments in buildings, industry, transportation, and the electric power sectors. This version also incorporates improvements in the treatment of operations and maintenance costs, and improves the treatment of financing of investment options. ImSET is also easier to use than extant macroeconomic simulation models and incorporates information developed by each of the EERE offices as part of the requirements of the Government Performance and Results Act.

  2. Zur mediopassiven 2. Und 3. Person dualis im indogermanischen

    Directory of Open Access Journals (Sweden)

    Bojan Čop

    1972-12-01

    Full Text Available Bekanntlich gibt es in einigen seltenen idg. Sprachen (im Arischen, Griechischen, Tocharischen auch Personal - suffixe für die 2. u n d 3. P. Du. des Mediopassivs. Von diesen sind die griechischen Ausgänge – 2. und 3. Du primär, 2. Du. sekundär, Du. sekundär sicher junge Neubildungen, s. z. B. Brugmann, Grdr.2 II 3 II, 657, § 602; Schwyzer, Gr. Gr. I 670, 672. Ein voll ausgebildetes System solcher Endungen besitzt das Arische; im Tocharischen kommt nur eine einzige Form mit solcher Endung vor, die die 2. P. Du. Med. lmperativi darstellt. Unter solchen Umständen scheint es schwierig, aus diesem Material wahrscheinliche Schlüsse für da_s Urindogermanische zu machen. Und doch ist gerade die tocharische Form, die uns eine ausserordentlich grosse Hilfe leistet, wenn man sie richtig zu beurteilen vermag. Die tocharische Endung, verbunden mit den arischen, wird unter Einschluss der allgemeinen Tendenzen und Regelungen im System der indogermanischen Personalsuffixe ohne Schwierigkeit die urindogermanische Urform erscheinen lassen.

  3. Report on converging insert moulding with µ-IM

    DEFF Research Database (Denmark)

    Islam, Aminul

    moulding with µ-IM  Task 5.2.1 and COTECH demonstrator: guide line for 5PRC production based on the concept of Task 5.2.1 Information and results provided by this deliverable will be directly used for one of the COTECH demonstrators production which will call for convergent insert moulding with µ......Task 5.2.1 deals with the technical feasibility of converging the state-of-the-art µ IM process with insert moulding to offer a wide range of multi-material µ components. The main objective of this deliverable is to summarize state-of-the-art information and to make the guideline needed...... for the convergence. In particular the following aspects are summed up in the deliverable:  Need for converging insert moulding with µ-IM  Objectives and expected outcome from task 5.2.1  State-of-the-art micro insert moulding and different scenario of micro insert moulding  Challenges ahead of converging insert...

  4. [Das Bild und die Wahrnehmung der Stadt und der städtischen Gesellschaft im Hanseraum im Mittelalter und in der frühen Neuzeit] / Juhan Kreem

    Index Scriptorium Estoniae

    Kreem, Juhan

    2009-01-01

    Arvustus: Das Bild und die Wahrnehmung der Stadt und der städtischen Gesellschaft im Hanseraum im Mittelalter und in der frühen Neuzeit. hrsg. v. Roman Czaja. Torun, 2004. Torunis 2002. aastal toimunud konverentsi materjalid. Projekti "Pilt ja linn" raames ilmunud publikatsioonide loendit saab näha aadressil http://www.historiaurbium.org/english/attivita_images_en.html.

  5. Medienpädagogische Aufgabenfelder hinsichtlich der Visualität im digitalen Zeitalter. Desiderate im Umgang mit visuellen Medienkulturen

    Directory of Open Access Journals (Sweden)

    Petra Missomelius

    2017-04-01

    Full Text Available Die bildungskulturell leitende Funktion des Buches diffundiert im digitalen Zeitalter mobiler und transversaler Systeme von Netzwerkmedien. Zudem sind soziokulturelle Lebenswelten wie Bildungsinstitutionen, Familie und Peers durch Heterogenität gekennzeichnet. Indem auch diese Teil des Geflechts medienkultureller Architekturen werden, geraten ehemals gültige Unterscheidungsparameter wie explizites und implizites, formelles und informelles Wissen ins Wanken. Grenzziehungen und konkurrierende Auffassungen gegenüber diesen, vormals als der Bildung entgegengesetzt wahrgenommenen, Bereichen erweisen sich nunmehr als problematisch. So spielt Visualität im Kontext multimodal zusammengesetzter Bildungsmaterialien eine zunehmende Rolle und wird als Möglichkeit des Umgangs mit Komplexität eingesetzt. Wenngleich somit die Zurückhaltung gegenüber (Bewegt-Bildmedien in der pädagogischen Praxis schwindet, so haben sich mit der Digitalisierung medienkulturell bedeutsame Felder eröffnet, welche erziehungswissenschaftlicher Beachtung bedürfen. Eine sich der Komplexität digitaler Medienkulturen stellende Medienpädagogik bringt mit sich, dass auch Funktion und Gebrauch visueller Medien im Kontext von Bildungsprozessen reflektiert stattfinden. Medienpädagogisch informiertes Agieren in visuellen Medienkulturen ist darüber hinaus heute gerade deshalb essentiell, da es sich bei digital generierter Visualität um eine neue Qualität im Unterschied zu traditionellen Bildmedien handelt, welche der Logik der Repräsentation entsprachen. Der Beitrag thematisiert Desiderate, die sich hinsichtlich des Visuellen datenbasierter Medien für die Medienpädagogik ergeben, und geht dabei auf kommunikative Bildlichkeit, auf paradigmatische mediale Formen und auf datengestützte Wissensgenerierung ein.

  6. Finanzmärkte – Unternehmungen – Informationen: Ergebnisse des Projektes im Wintersemester 2016/2017

    OpenAIRE

    Geyer, Helmut; Grau, Svenja; Giersch, Peter; Eckardt, Maximilian; Eder, Josephin; Catholy, Victoria; Pisak, Anastasia; Löser, Matthias; Jehring, Maximilian; Zhang, Haoyang; Grabengießer, Anja; Gruschwitz, Karoline; Heinrich, Katharina; Patzer, Vivien; Päsler, Florian

    2018-01-01

    Der vorliegende Beitrag der Wirtschaftswissenschaftlichen Schriften ist ein Sammelband, der die Beiträge der Studierenden des 2. Fachsemesters im Masterstudiengang General Management aus dem Wintersemester 2016/2017 umfasst. Die Einzelbeiträge wurden in einer zwei Monate dauernden Projektarbeit im Herbst 2016 erarbeitet und im Januar 2017 präsentiert. Der Themenschwerpunkt für dieses Jahr lag auf dem Bereich "Immobilien/Wohnungspolitik". Innerhalb dieser Vorgabe wurde ein breites Spektrum bea...

  7. [Photoionization ion mobility spectrometry (UV-IMS) for the isomeric volatile organic compounds].

    Science.gov (United States)

    Li, Hu; Niu, Wen-qi; Wang, Hong-mei; Huang, Chao-qun; Jiang, Hai-he; Chu, Yan-nan

    2012-01-01

    The construction and performance study is reported for a newly developed ultraviolet photoionization ion mobility spectrometry (UV-IMS). In the present paper, an UV-IMS technique was firstly developed to detect eleven isomeric volatile organic compounds including the differences in the structure of carbon chain, the style of function group and the position of function group. Their reduced mobility values were determined and increased in this order: linears alcohols homemade UV-IMS was around ppb-ppm.

  8. Incidental findings in chest X-rays; Zufallsbefunde im Roentgenthorax

    Energy Technology Data Exchange (ETDEWEB)

    Wielpuetz, M.O.; Kauczor, H.U. [Universitaetsklinikum Heidelberg, Klinik fuer Diagnostische und Interventionelle Radiologie, Heidelberg (Germany); Universitaet Heidelberg, Translational Lung Research Center (TLRC), Deutsches Zentrum fuer Lungenforschung (DZL), Heidelberg (Germany); Universitaetsklinikum Heidelberg, Klinik fuer Diagnostische und Interventionelle Radiologie mit Nuklearmedizin, Thoraxklinik, Heidelberg (Germany); Weckbach, S. [Universitaetsklinikum Heidelberg, Klinik fuer Diagnostische und Interventionelle Radiologie, Heidelberg (Germany); Universitaet Heidelberg, Translational Lung Research Center (TLRC), Deutsches Zentrum fuer Lungenforschung (DZL), Heidelberg (Germany)

    2017-04-15

    Conventional projection radiography (chest x-ray) is one of the most frequently requested procedures in radiology. Even though chest x-ray imaging is frequently performed in asymptomatic patients for preoperative assessment, clinically relevant incidental findings are relatively scarce. This is due to the relatively low sensitivity of chest x-rays where few clinically relevant incidental findings are to be expected, as any detectable pathologies will as a rule already be clinically symptomatic. Recommendations from relevant societies for the management of incidental findings, apart from the clarification of incidental nodules, do not exist. This review article therefore describes the most frequent and typical incidental findings of lung parenchyma (apart from pulmonary nodules), mediastinal structures including the hilum of the lungs, pleura, chest wall and major vessels. Also described are those findings which can be diagnosed with sufficient certainty from chest x-rays so that further clarification is not necessary and those which must be further clarified by multislice imaging procedures or other techniques. (orig.) [German] Eine der haeufigsten Untersuchungen in der Radiologie ist die konventionelle Projektionsradiographie des Thorax (Roentgenthorax). Auch wenn projektionsradiographische Aufnahmen im Rahmen einer praeoperativen Abklaerung haeufig als orientierende Untersuchung angefertigt werden, sind - bedingt durch die relativ geringe Sensitivitaet des Roentgenthorax - wenig klinisch relevante Zufallsbefunde zu erwarten, da nachweisbare Pathologien in der Regel bereits auch klinisch apparent sind. Empfehlungen entsprechender Fachgesellschaften zu Zufallsbefunden im Roentgenthorax jenseits der Abklaerung von Rundherden liegen nicht vor. Die vorliegende Arbeit beleuchtet daher haeufige und typische Zufallsbefunde des Lungenparenchyms (ausser den Lungenrundherden), der mediastinalen Strukturen einschliesslich der Hili, der Pleura, der Thoraxwand sowie der

  9. Die Freunde im und die Freude am Fernsehen

    Directory of Open Access Journals (Sweden)

    Amina Ovcina Cajacob

    2012-09-01

    Full Text Available Das Ziel der vorliegenden Arbeit besteht darin, die Wirkungen von Popstars und Popbands auf Jugendliche (13- bis 17-Jährige zu erforschen. Im Mittelpunkt der Interessen steht die Frage, welche Wirkungen aus der Rezeption von Musiksendungen (bzw. Videoclips von Musiksendern entstehen und welche Charakteristika innerhalb der aufgebauten Beziehungen zu den Stars bemerkbar sind. Andererseits wurden die Unterschiede und Parallelen zwischen parasozialen Beziehungen zu den Stars und orthosozialen Beziehungen aufgezeigt. Im Zusammenhang mit der empirischen Untersuchung bezieht sich die Autorin auf den Uses-and-Gratifications-Approach, wobei die bedürfnissbefriedigenden Wirkungen von Musikkanälen und den dazu gehörigen Popstars im Mittelpunkt stehen. Mit Hilfe des Uses-and-Gratifications-Approach wird angenommen, dass das Konsumieren der Musiksendungen und der Musikstars von den Jugendlichen gezielt zur Befriedigung bestimmter Bedürfnisse eingesetzt wird.The objective of this study is to explore the effects of pop stars on adolescents (aged between 13 and 17. The focus of interest is the question what effect music channels (i.e. video clips from music channels produce and what characteristics are noticeable from the formed relationship between adolescents and pop stars. On the other side, parallels and differences have been drawn between the para-social relationships to pop stars and ortho-social relationships. In connection with empirical study, the author also refers to Uses-and Gratification-Approach where the need satisfying effects of music channels and pop stars are in focus. With the help of Uses-and Gratification-Approach it will be assumed, that aim of watching music channels and therefore pop stars will be pointed toward the gratification of specific needs.

  10. ImBuild: Impact of building energy efficiency programs

    Energy Technology Data Exchange (ETDEWEB)

    Scott, M.J.; Hostick, D.J.; Belzer, D.B.

    1998-04-01

    As part of measuring the impact of government programs on improving the energy efficiency of the Nation`s building stock, the Department of Energy Office of Building Technology, State and Community Programs (BTS) is interested in assessing the economic impacts of its portfolio of programs, specifically the potential impact on national employment and income. The special-purpose version of the IMPLAN model used in this study is called ImBuild. In comparison with simple economic multiplier approaches, such as Department of Commerce RIMS 2 system, ImBuild allows for more complete and automated analysis of the economic impacts of energy efficiency investments in buildings. ImBuild is also easier to use than existing macroeconomic simulation models. The authors conducted an analysis of three sample BTS energy programs: the residential generator-absorber heat exchange gas heat pump (GAX heat pump), the low power sulfur lamp (LPSL) in residential and commercial applications, and the Building America program. The GAX heat pump would address the market for the high-efficiency residential combined heating and cooling systems. The LPSL would replace some highly efficient fluorescent commercial lighting. Building America seeks to improve the energy efficiency of new factory-built, modular, manufactured, and small-volume, site-built homes through use of systems engineering concepts and early incorporation of new products and processes, and by increasing the demand for more energy-efficient homes. The authors analyze a scenario for market penetration of each of these technologies devised for BTS programs reported in the BTS GPRA Metrics Estimates, FY99 Budget Request, December 19, 1997. 46 figs., 4 tabs.

  11. Thermische Verletzungen im Kindesalter: Eine retrospektive Kohortenstudie von 212 Fällen

    OpenAIRE

    Sperling, Patrik Leonhart

    2012-01-01

    Anhand einer retrospektiven Datenanalyse sollen Verteilungsmuster von Verbrennungen und Verbrühungen bezogen auf Alter und Geschlecht untersucht werden. Erfasst wurden 212 Patienten im Alter von 0 bis 16 Jahren betrachtet, die im Zeitraum vom 01.01.2004 bis zum 31.12.2009 auf Grund einer thermischen Verletzung stationär im Universitätsklinikum Würzburg der Julius-Maximilians-Universität Würzburg behandelt wurden. Den größten Anteil thermischer Verletzungen im Kindesalter stellen Verbrühungen ...

  12. A two-stage extraction procedure for insensitive munition (IM) explosive compounds in soils.

    Science.gov (United States)

    Felt, Deborah; Gurtowski, Luke; Nestler, Catherine C; Johnson, Jared; Larson, Steven

    2016-12-01

    The Department of Defense (DoD) is developing a new category of insensitive munitions (IMs) that are more resistant to detonation or promulgation from external stimuli than traditional munition formulations. The new explosive constituent compounds are 2,4-dinitroanisole (DNAN), nitroguanidine (NQ), and nitrotriazolone (NTO). The production and use of IM formulations may result in interaction of IM component compounds with soil. The chemical properties of these IM compounds present unique challenges for extraction from environmental matrices such as soil. A two-stage extraction procedure was developed and tested using several soil types amended with known concentrations of IM compounds. This procedure incorporates both an acidified phase and an organic phase to account for the chemical properties of the IM compounds. The method detection limits (MDLs) for all IM compounds in all soil types were regulatory risk-based Regional Screening Level (RSL) criteria for soil proposed by the U.S. Army Public Health Center. At defined environmentally relevant concentrations, the average recovery of each IM compound in each soil type was consistent and greater than 85%. The two-stage extraction method decreased the influence of soil composition on IM compound recovery. UV analysis of NTO established an isosbestic point based on varied pH at a detection wavelength of 341 nm. The two-stage soil extraction method is equally effective for traditional munition compounds, a potentially important point when examining soils exposed to both traditional and insensitive munitions. Copyright © 2016 Elsevier Ltd. All rights reserved.

  13. Einsatz von Skype im Unternehmen: Chancen und Risiken

    OpenAIRE

    Messerer, Thomas

    2016-01-01

    Gegenstand dieser Studie ist der Internet-Telefoniedienst Skype, der sich grundsätzlich an Endanwender richtet. Im Mittelpunkt steht dabei die Frage, ob und unter welchen Umständen sich dieses Skype-Angebot auch für den Einsatz in Unternehmen eignet. Microsoft bietet darüber hinaus eine Skype-Lösung (ehemals Lync) an, die sich ausdrücklich an Unternehmen wendet. Deren Markenname ist „Skype for Business“. Dieser Dienst wird in der vorliegenden Studie nicht untersucht; dazu hat das Autorenteam ...

  14. ODE/IM correspondence and modified affine Toda field equations

    Energy Technology Data Exchange (ETDEWEB)

    Ito, Katsushi; Locke, Christopher

    2014-08-15

    We study the two-dimensional affine Toda field equations for affine Lie algebra g{sup ^} modified by a conformal transformation and the associated linear equations. In the conformal limit, the associated linear problem reduces to a (pseudo-)differential equation. For classical affine Lie algebra g{sup ^}, we obtain a (pseudo-)differential equation corresponding to the Bethe equations for the Langlands dual of the Lie algebra g, which were found by Dorey et al. in study of the ODE/IM correspondence.

  15. Using scenarios for dissemination - Experiences from the IMS GLOBEMEN project

    DEFF Research Database (Denmark)

    Ollus, Martin; Hartel, Ingo; Tølle, Martin

    2002-01-01

    due to the complexities of the interdisciplinary field addressed. As an instrument for communication to the non-specialist public the IMS GLOBEMEN project produces a web-based scenario as part of its dissemination activities. It is aimed at giving a practical overview of specific challenges...... in the field and contributions from the project. Based upon a generic Virtual Enterprise Reference Architecture (called VERA) the partners in the project have developed a set of protypes to be implemeted in their own business processes. The results will be illutrated in one integrated scenario....

  16. Morphological and physiological investigations on mutants of Fusarium monoliforme IM

    International Nuclear Information System (INIS)

    Gancheva, V.

    1996-01-01

    High-producing mutants of Fusarium moniliforme IM are obtained as a result of gamma irradiation. The cultural characteristics of mutant strains 3284, 3211 and 76 following incubation of the producers for 14 days on potato-glucose agar are described. The colour of the aerial and substrate mycelium and the ability of the mutant strains to form conidiae and pigments are discussed in detail. The differences in the ability of mutants to assimilate different carbon and nitrogen sources are of specific importance for modelling nutrient media for submerged cultivation of F. moniliforme. 2 tabs., 2 figs. 7 refs

  17. [Leben im Eismeer - Tauchuntersuchungen zur Biologie arktischer Meerespflanzen und Meerestiere

    Science.gov (United States)

    Lippert; Karsten; Wiencke

    2000-01-01

    Die Maske wird nochmals auf Dichtigkeit überprüft, der Knoten der Sicherungsleine mit zwei halben Schlägen fixiert, dann rutscht die Taucherin von der Eiskante in das kalte Wasser. Eine halbe Stunde vergeht, bevor ihr Kopf wieder aus dem Eisloch auftaucht und sie ein großes Sammelnetz nach oben reicht, gefüllt mit verschiedenen Arten von Makroalgen. Obwohl noch große Flächen des Kongsfjordes im arktischen Spitzbergen zugefroren sind und das Festland von einer dicken Schneedecke bedeckt ist, hat unter Wasser in den Algenwäldern bereits der Sommer und damit die Saison der Meeresbiologen begonnen.

  18. Die filmstilistische Darstellung von Klaras Gehbehinderung im Kinderfilm "Heidi"

    Directory of Open Access Journals (Sweden)

    Maria Ohrfandl

    2016-09-01

    Full Text Available Dieser Beitrag soll die Forschungslücke zur Darstellung von Behinderungen speziell im Kinderfilm im deutschsprachigen Raum füllen. Auf Basis einer neoformalistisch orientierten Filmanalyse nach Bordwell und Thompson (2008, wird anhand von drei Filmsequenzen eine mögliche Lesart des Kinderfilms "Heidi" (Marcus 2005 entwickelt, um die filmstilistische Darstellung der Gehbehinderung des Mädchens Klara zu untersuchen. Die Ergebnisse werden mit theoretischen Überlegungen zur Problematik der Begriffsbestimmung von Körperbehinderung sowie zur Mobilität und Selbstbestimmung von Menschen mit Körperbehinderungen in Bezug gesetzt. Dabei zeigt sich im Wesentlichen, dass im Kinderfilm "Heidi" (Marcus 2005 Klaras Gehbehinderung als 'heilbare Krankheit' und der Rollstuhl als Einschränkung von Mobilität begriffen wird. Außerdem unterliegt Klara aufgrund ihrer Körperbehinderung überwiegend der Fremdbestimmung von Erwachsenen. Zur Klärung wahrscheinlicher filmischer Bildungspotenziale werden die Ergebnisse schließlich anhand der von Jörissen und Marotzki (2009 entwickelten Orientierungsdimensionen "Wissens-, Handlungs-, Grenz- und Biographiebezug" diskutiert. This article aims to bridge a knowledge gap by showing ways of representing disabilities in the German children film genre. Using Bordwell and Thomson's (2008 neoformalistically orientated film analysis approach, the movie "Heidi" (Marcus 2005 is analysed. Bordwell and Thompson's (2008 method is applied to three sequences of "Heidi" in order to present an interpretation and to discuss the representation of Clara's walking impediment. The results are then associated with theoretical considerations regarding the mobility and self-determination of people with disabilities and problematic definitions of the term 'physical disability'. It is shown that characters in the children's film "Heidi" (Marcus 2005 regard Clara's walking impediment as a 'curable disease' and the wheelchair as a limitation

  19. Multimediale Kommunikationsarchitekturen: Herausforderungen und Weiterentwicklungen der Forschungen im Kulturraum Internet

    Directory of Open Access Journals (Sweden)

    Winfried Marotzki

    2008-04-01

    Full Text Available Im Folgenden setze ich mich mit der Frage auseinander, wie der sich rasch verändernde kulturelle Raum Internet forschungsmässig zu erschliessen ist. Dabei möchte ich weniger den aktuellen Stand der Internet Forschung bilanzieren, das ist durch verschiedene einschlägige Publikationen bereits geschehen. Vielmehr werde ich mich darauf konzentrieren, die Hauptveränderungen des Internet in den letzten Jahren zu skizzieren, um daran anknüpfend einige ausgewählte methodische Probleme, die damit verbunden sind, zu bearbeiten.

  20. "ARZT IM GANZEN SPEKTRUM" ["PHYSICIAN IN THE FULL SPEKTRUM"

    Directory of Open Access Journals (Sweden)

    Mitzkat, Anika

    2006-11-01

    Full Text Available [english] For more than 20 years teaching in the medical program at Witten/Herdecke Private University has followed the goal of introducing students to the reality of patient care by a practical approach. The “adaptive physician personality” describes the educational objective of a physician who is able to orient towards “the full spectrum” of his professional core competencies. In regard to the “adaptive physician personality” four Integrated Curricula (Communication, Science, Ethics, and Health Economy had been developed along with the introduction of a model medical program in 2000. Witten/Herdecke University thereby today addresses the requirements defined by the New Medical Licensure Act of 27.06.2002 and brings forward at the same time a program which prepares the medical student for the multi-dimensional responsibilities in the reality of modern health care. This article describes the Integrated Curricula exemplified by the Communication curriculum. This relatively young area of medical teaching in Germany is still extensively unexplored concerning evidence-based research about its effectiveness and efficiency of teaching. [german] Die Lehre im Studiengang Humanmedizin an der Privaten Universität Witten/Herdecke (UWH verfolgt seit mehr als 20 Jahren das Ziel, Studierende praxisnah an die Realität der Patientenversorgung heranzuführen. Das Ausbildungsziel des Medizinstudiums ist dabei die ”lernfähige Arztpersönlichkeit”, die sich möglichst „im ganzen Spektrum” ärztlicher Kernkompetenzen zu orientieren vermag. Im Hinblick auf das Ziel der „lernfähigen Arztpersönlichkeit“ wurden mit der Einführung des Modellstudiengangs Medizin im Jahr 2000 vier Integrierte Curricula (Kommunikation, Wissenschaft, Ethik und Gesundheitsökonomie aufgebaut. Die Lehre an der Universität Witten/Herdecke geht damit einerseits auf die Anforderungen, die mit Einführung der neuen Approbationsordnung für Ärzte vom 27.06.2002 an

  1. Primary fibrosarcoma im small intestine of dog - Case report

    OpenAIRE

    Geórgia Modé Magalhães; Juliana Santilli; Sabryna Gouveia Calazans; Lilian Toshiko Nishimura; Sofia de Amorim Cerejo; Fernanda Gosuen Gonçalves Dias

    2015-01-01

    ABSTRACT. Magalhães G.M., Santilli J., Calazans S.G., Nishimura L.T., Cerejo S.A. & Dias F.G.G. [Primary fibrosarcoma im small intestine of dog - Case report.] Fibrossarcoma primário em intestino delgado de cão - Relato de caso. Revista Brasileira de Medicina Veterinária, 37(2):145-148, 2015. Programa de Pós-Graduação em Medicina Veterinária de Pequenos Animais, Universidade de Franca, Av. Dr. Armando Salles Oliveira, 201, Cx postal 82, Parque Universitá- rio, Franca, SP 14404-600, Brasil. E-...

  2. Sexualität im Werk Arno Schmidts

    OpenAIRE

    Reischert, Jessica

    2006-01-01

    Die Sexualität im Frühwerk Arno Schmidts stellt ein umfangreiches und komplexes Thema dar, das dennoch auf gewisse Grundmuster und –vorgänge reduziert werden kann. So haben sich bei der Begegnung von Menschen untereinander klare Linien ergeben, anhand derer viele Gespräche eingeordnet und analysiert werden können. Unterschieden werden können mehrere Gesprächstypen, in denen sich bestimmte Verhaltensweisen der Schmidtschen Protagonisten zeigen: In den geschlechtlich gemischten Gesprächsrunden ...

  3. Economic management system at the im. Abakumova mine

    Energy Technology Data Exchange (ETDEWEB)

    Martynenko, V.F. (Shakhta im. Abakumova (Ukraine))

    1992-08-01

    Decribes new methods of settling accounts between mine departments, and methods of paying wages introduced in the im. Abakumova mine. Internal banknotes were introduced in 1991. Ways of clearing the cost of materials, depreciation and repair work are explained. Claims of mine departments are settled by arbitration committees. It was found that the new system of financial self-dependence of mine departments prevented downtime from occurring. Losses of coal reserves were reduced in 1991 by 28% compared to 1990. In the first quarter of 1992, labor efficiency increased by 6% compared to the first quarter in 1991.

  4. Psychiatrie im Nationalsozialismus. Zwangssterilisation und Euthanasie am Beispiel des Saarlandes

    Directory of Open Access Journals (Sweden)

    Torsten Mergen

    2006-03-01

    Full Text Available In seiner ausführlichen und anhand zahlreicher Patientenakten erarbeiteten Dissertationsschrift untersucht Christoph Braß die Folgen des rassenhygienischen Denkens am Beispiel des Saarlandes von 1935 bis 1945. Dabei analysiert er einerseits systematisch die Vorgänge im Rahmen der Zwangssterilisation von psychisch Kranken und Behinderten, andererseits zeigt er exemplarisch Vorgeschichte, Verlauf und Ergebnisse der Euthanasie an saarländischen Patienten. Es entsteht eine eindrucksvolle und durch die dichte Darstellung Betroffenheit auslösende Studie, die eine wichtige Lücke der NS-Forschung schließt.

  5. Der antiskeptische Boden unter dem Gehirn im Tank

    OpenAIRE

    Müller, Olaf L.

    2001-01-01

    Crispin Wright hat die bislang beste Rekonstruktion von Putnams Beweis gegen die skeptische Hypothese vom Gehirn im Tank vorgelegt. Aber selbst in Wrights Fassung hat der Beweis einen Mangel: Er wird mithilfe eines Prädikates wie z.B. "Tiger" geführt und funktioniert nur, wenn man sich darauf verlassen kann, dass es Tiger wirklich gibt. Aber die Skeptikerin bestreitet, über die Existenz von Tigern bescheid zu wissen. Das Problem lässt sich dadurch beheben, dass man den Beweis – statt mit dem ...

  6. Attempt to promote hospital management by IM Public Platform

    Directory of Open Access Journals (Sweden)

    Hui CHEN

    2014-06-01

    Full Text Available Thisarticle has analyzed the contribution of modern IT to hospital management: using public platform of IM (instant message/communication will make it more convenient and efficient to conduct communication with (prior to the treatment, conduct treatment, and provide post-treatment service for patients and their family; withthe set-up of a smooth and efficient information channel set up, the relationship between patients and doctors will be greatly improved ,thus reputation and credibility of the hospital and its doctors will be promoted; when the public has better received the hospital and its doctors, social harmony will be achieved. 

  7. Verminderung der Prüfungsangst durch Modellernen im Klassenzimmer

    OpenAIRE

    Ellgring, Johann Heinrich; Elbing, Eberhard

    2010-01-01

    Die Wirksamkeit des Modellernens im Klassenzimmer zur Veränderung der Prüfungsangst wurde bei 152 Knaben und 164 Mädchen der Klassen 5-8 einer Hauptschule untersucht. Den Schülern wurden die Angst-Skalen (TASe und GASC) von Sarason vorgelegt. Anhand der Fragebogenergebnisse wurden die Kinder den Kategorien "hochängstlich" (HA), "mittelängstlich" (MA) und "niedrigängstlich" (NA) zugeordnet. Für 3,5 Monate wurden die folgenden Paarbildungen (Banknachbarn) beibehalten: HA neben HA, MA und NA, NA...

  8. Der Wortschatz als "Wahrheitsvermittler" im außenpolitischen Pressekommentar

    Directory of Open Access Journals (Sweden)

    Vida Jesenšek

    1998-12-01

    Full Text Available Bekannterweise weist die ausgewählte journalistische Textsorte eine spezifische textuelle Struktur auf; ihre inhaltliche (evaluative und intentionale Komponente sind zunächst in Kürze zu erläutern. Es zeigt sich, daß die Bewertung als obligatorisches Element eines Kommentartextes textstrukturell und stilistisch-pragmatisch bedingt ist und daß sie im Prinzip mittels Lexik realisiert wird. Das Funktionieren der Lexik als Bewertungsträger wird anschließend aufgrund einer exemplarischen Fallanalyse dargestellt, wobei hauptsächlich Zusammenhänge zwischen textstrukturellen Besonderheiten der Kommentartexte und stilistisch-pragmatischen Eigenschaften der Lexik interessieren.

  9. Entwicklung der Reglementierung von 10 MEM-Berufen im Kontext von Bildungsreformen und dem Wandel in der Arbeitswelt: Eine Kurzstudie im Auftrag von LIBS: Eine Kurzstudie im Auftrag von LIBS Industrielle Berufslehren Schweiz, Baden

    OpenAIRE

    Egg, Maria Esther; Renold, Ursula

    2015-01-01

    Im Auftrag der LIBS Industrielle Berufslehren Schweiz, hat die KOF die Entwicklung von 10 MEM1-Berufsbildern seit dem ersten Berufsbildungsgesetz dargestellt und diese eingebettet in eine kurze Zusammenfassung der wichtigsten Etappenschritte des Schweizer Berufsbildungssystems.

  10. Synthesis and DNA binding properties of 1-(3-aminopropyl)-imidazole-containing triamide f-Im*PyIm: a novel diamino polyamide designed to target 5'-ACGCGT-3'.

    Science.gov (United States)

    Satam, Vijay; Babu, Balaji; Porte, Alexander; Savagian, Mia; Lee, Megan; Smeltzer, Thomas; Liu, Yang; Ramos, Joseph; Wilson, W David; Lin, Shicai; Kiakos, Kostantinos; Hartley, John A; Lee, Moses

    2012-09-15

    A novel diamino/dicationic polyamide f-Im(*)PyIm (5) that contains an orthogonally positioned aminopropyl chain on an imidazole (Im(*)) moiety was designed to target 5'-ACGCGT-3'. The DNA binding properties of the diamino polyamide 5, determined by CD, ΔT(M), DNase I footprinting, SPR, and ITC studies, were compared with those of its monoamino/monocationic counterpart f-ImPyIm (1) and its diamino/dicationic isomer f-ImPy(*)Im (2), which has the aminopropyl group attached to the central pyrrole unit (Py(*)). The results gave evidence for the minor groove binding and selectivity of polyamide 5 for the cognate sequence 5'-ACGCGT-3', and with strong affinity (K(eq)=2.3×10(7) M(-1)). However, the binding affinities varied according to the order: f-ImPy(*)Im (2)>f-ImPyIm (1)≥f-Im(*)PyIm (5) confirming that the second amino group can improve affinity, but its position within the polyamide can affect affinity. Copyright © 2012 Elsevier Ltd. All rights reserved.

  11. Aktuelle Tendenzen im computerunterstützten (Fach- Fremdsprachenunterricht

    Directory of Open Access Journals (Sweden)

    Pawel Szerszeń

    2015-03-01

    Full Text Available Die heutigen Entwicklungen im Bereich der Kommunikations-und Informationstechnologien tragen u.a. dazu bei,dass wir immer wieder mit neuen E-Learning-Angeboten im (Fach-Fremdsprachenunterricht konfrontiert werden. Diese Tatsa-che stellt u.a. die FremdsprachendidaktikerInnen vor neue Herausforderungen, für die eine kritische Reflexion über die didakti-sche Effizienz von E-Learning-Produkten Vorrang hat. Für eine solche didaktische Reflexion muss jedoch zunächst geklärt wer-den, welche Haupttypen von E-Learning-Produkten bestehen. Das Hauptziel des vorliegenden Beitrags ist somit der Versuch, diezurzeit bestehenden Haupttypen zu erfassen, zu kategorisieren sowie mit einigen Beispielen zu veranschaulichen wie auch aufinteressante Features ausgewählter Lernplattformen/Lernprogramme und auf einige neue E-Learning-Tendenzen hinzuweisen.Dieser Überblick stellt eine nötige und geeignete Grundlage für eine zukünftig mögliche Effizienzreflexion und-diskussion vordem Hintergrund möglicher Produktvergleiche dar

  12. Medienkompetenz multiplizieren? Entwicklung eines Multiplikator/-innenkonzepts im Lehramtsstudium

    Directory of Open Access Journals (Sweden)

    Antje Müller

    2017-02-01

    Full Text Available Zur Förderung von Medienkompetenz und medienpädagogischer Kompetenz in der universitären Lehramtsausbildung wurde an der Justus-Liebig-Universität Gießen ein Lehrprojekt initiiert, das an der aktuellen technologischen Ausstattung von deutschen Schulen ansetzt. Als Zugang wurde die Technologie der interaktiven Whitebords gewählt, um gegenwärtige Entwicklungen der Digitalisierung von Unterrichtsräumen zu thematisieren und dabei ausgewählte Aspekte von Medienkompetenz zu fördern. In dem Projekt haben verschiedene Einrichtungen der Universität und der Lehrerbildung kooperiert, um eine Multiplikator/-innenschulung für Studierende zu erarbeiten und zu etablieren. Es wurde eine 28-stündige Qualifizierungsreihe entwickelt, die sich aus modularisierten Workshops zur medientechnischen und -didaktischen Auseinandersetzung mit interaktiven Whiteboards, Elementen der Tutor/-innenausbildung sowie der Erarbeitung eines eigenen Unterrichtsentwurfes zusammensetzt. In dem Artikel werden die entwickelten Module vorgestellt und bewertet, inwieweit sie den von Herzig, Aßmann und Klar (2014 formulierten Zielvorstellungen zur Medienkompetenzförderung für das Lehramtsstudium entsprechen. Im Abgleich mit diesen Zielvorstellungen werden Entwicklungspotentiale des Konzepts identifiziert. Darüber hinaus fliessen Ergebnisse der praktischen Durchführung in Optimierungsvorschläge zur Steigerung der Nachhaltigkeit und Qualität der didaktischen Kompetenzen zum Einsatz von interaktiven Whiteboards in der Lehramtsausbildung – und darüber vermittelt im Schulunterricht – ein.

  13. Integrated municipal wind power concepts; Windenergienutzung im staedtischen Verbund

    Energy Technology Data Exchange (ETDEWEB)

    Kolbert, D.; Richert, F. [Ventis Energietechnik GmbH, Braunschweig (Germany)

    1998-06-01

    The role of wind power in the industrial sector currently depends very much on its technical and economic integrability in existing conventional supply structures. The most important questions in this context relate to capacity effects, adapted operating methods of conventional power suppliers, and, most important of all, operational energy production costs. In some regions alternative energy supply concepts are not yet or not sufficiently available. However, these will nevertheless offer ways of installing energy systems with a large renewable segment. The chances of bringing such projects to fruition depend for one thing on the climate, which may either stimulate or deter from development work on renewables (wind power, solar energy), and for another, often in apparent opposition to the former, on the oftentimes poorly developed infrastructure and economic strength of the region in question. [Deutsch] Die Bedeutung der Windenergienutzung im industrialisierten Bereich ist derzeit verknuepft mit deren technischen und oekonomischen Integrationsfaehigkeit in bestehende, konventionelle Versorgungsstrukturen. Im Vordergrund steht hierbei die Klaerung der Fragestellungen nach Kapazitaetseffekten, angepassten Betriebsweisen konventioneller Stromerzeuger und, in erster Linie, betriebswirtschaftlichen Energieerzeugungskosten. Derzeit bieten die Regionen, in denen eine anderweitige Versorgung noch nicht oder in nicht ausreichendem Masse existieren Moeglichkeiten zur Installation von Energiesystemen mit hoher regenerativer Durchdringung. Fuer die Realisation solcher Projekte stehen sich haeufig die klimatischen Bedingungen, die einerseits z.T. die Ursache fuer den geringen Entwicklungsstand sind, andererseits aber auch guenstige Voraussetzungen fuer die Nutzung regenerativer Energien (Wind, Sonne) bieten, der meist schlechten Infrastruktur und der geringen Wirtschaftskraft gegenueber. (orig./MSK)

  14. Anmerkungen zur Aufrichtigkeit im russischen Autorenkino der 2010er

    Directory of Open Access Journals (Sweden)

    Irina Souch

    2017-06-01

    Full Text Available Obwohl der Begriff der Aufrichtigkeit seit längerer Zeit in der westlichen Filmtheorie mit Bezug auf einen bestimmten Regiestil verwendet worden ist, manifestiert sich dieser Trend in Russland erst seit Kurzem. Der Essay beginnt mit einer Betrachtung der diskursiven Anwendungen des Konzepts von Aufrichtigkeit zu, um sich anschließend den Filmen dreier junger russischer Regisseurinnen anzunähern: Oksana Byčkovas Eshche odin god / Another Year (2014, Nigina Sajfullaevas Kak menja zovut/ Sag mir, wer ich bin (2014, sowie Natalija Meščaninovas Kombinat „Nadežda“ / Fabrik der Hoffnung (2014. Obwohl sie der sogenannten neuen Welle des Autorenkinos („novaja režisserskaja volna“ zugeordnet werden, fechten die Positionen, die diese Regisseurinnen gegenüber ihren Vorgängern, aber auch ihren Zeitgenossen einnehmen, sowohl in Russland als auch dem Westen eine einfache Zuordnung an. Die Filme bieten einen Einblick in das Anliegen der Regisseurinnen, die gesellschaftlichen und emotionalen Sorgen ihrer Generation auf eine ehrliche und realistische Art und Weise auszudrücken. Eine sorgfältige Untersuchung unterstreicht die unterschiedlich verwendeten, aber dennoch gemeinsamen stilistischen, narrativen und thematischen Elemente, die sie im Film einsetzen. Im Laufe der Untersuchungen begegnet die Aufrichtigkeit nicht nur als diskursives Phänomen, sondern auch als eine vielseitige kulturelle Praxis. Die Mittel, mit denen die einzelnen Filme versuchen bei den Zuschauern eine emotionale Reaktion hervorzurufen, berechtigen die Einordnung einer solchen ästhetischen Taktik als aufrichtig und ehrlich.

  15. Utility of the ImPACT test with deaf adolescents.

    Science.gov (United States)

    Reesman, Jennifer; Pineda, Jill; Carver, Jenny; Brice, Patrick J; Zabel, T Andrew; Schatz, Philip

    2016-02-01

    The goals of the study included empirical examination of the utility of the Immediate and Post-Concussion Assessment and Cognitive Testing (ImPACT) test with adolescents who are deaf or hard-of-hearing and to investigate patterns of performance at baseline that may arise in the assessment of this population. Baseline assessment of student-athletes has been conducted on a widespread scale with focus on performance of typically developing student-athletes and some clinical groups, though to date no studies have examined adolescents who are deaf or hard-of-hearing. Retrospective and de-identified ImPACT baseline test used with deaf and hard-of-hearing high-school student-athletes (N = 143; 66% male, mean age = 16.11) was examined. Review indicated significant differences in some composite scores between the deaf and hard-of-hearing group and hearing normative comparisons. A possible marker of task misunderstanding was identified to occur more frequently within the deaf and hard-of-hearing sample (13% in deaf sample vs. .31% in hearing sample). Results may provide support for the consideration and use of additional measures to ensure comprehension of task demands when considering this tool for use with deaf and hard-of-hearing adolescents.

  16. International Conference on Informatics and Management Science (IMS)

    CERN Document Server

    Informatics and Management Science III

    2013-01-01

    The International Conference on Informatics and Management Science (IMS) 2012 will be held on November 16-19, 2012, in Chongqing, China, which is organized by Chongqing Normal University, Chongqing University, Shanghai Jiao Tong University, Nanyang Technological University, University of Michigan, Chongqing University of Arts and Sciences, and sponsored by National Natural Science Foundation of China (NSFC). The objective of IMS 2012 is to facilitate an exchange of information on best practices for the latest research advances in a range of areas. Informatics and Management Science contains over 600 contributions to suggest and inspire solutions and methods drawing from multiple disciplines including: ·         Computer Science ·         Communications and Electrical Engineering ·         Management Science ·         Service Science ·         Business Intelligence

  17. International Conference on Informatics and Management Science (IMS) 2012

    CERN Document Server

    Informatics and Management Science VI

    2013-01-01

    The International Conference on Informatics and Management Science (IMS) 2012 will be held on November 16-19, 2012, in Chongqing, China, which is organized by Chongqing Normal University, Chongqing University, Shanghai Jiao Tong University, Nanyang Technological University, University of Michigan, Chongqing University of Arts and Sciences, and sponsored by National Natural Science Foundation of China (NSFC). The objective of IMS 2012 is to facilitate an exchange of information on best practices for the latest research advances in a range of areas. Informatics and Management Science contains over 600 contributions to suggest and inspire solutions and methods drawing from multiple disciplines including: ·         Computer Science ·         Communications and Electrical Engineering ·         Management Science ·         Service Science ·         Business Intelligence

  18. [Christian Westerhoff. Zwangsarbeit im Ersten Weltkrieg. Deutsche Arbeitskräftepolitik im besetzten Polen und Litauen 1914-1918, Tilman Plath.Zwischen Schonung und Menschenjagden. Die Arbeitseinsatzpolitik in den baltischen Generalbezirken des Reich

    Index Scriptorium Estoniae

    Hiio, Toomas, 1965-

    2014-01-01

    Arvustus: Westerhoff, Christian. Zwangsarbeit im Ersten Weltkrieg. Deutsche Arbeitskräftepolitik im besetzten Polen und Litauen 1914-1918 (Studien zur historischen Migrationsforschung, 25). Verlag Ferdinand Schöningh. Padeborn 2011

  19. World-wide developments in motor vehicle inspection/maintenance (I/M) programs

    Energy Technology Data Exchange (ETDEWEB)

    Klausmeier, R. [Consulting Inc., Austin, TX (United States); Kishan, S. [Radian Corporation, Austin, TX (United States)

    1995-12-31

    Motor vehicles contribute much to urban air pollution. As a result, most governments have enacted emission standards that significantly lower pollutant emission levels from new motor vehicles. For example, vehicles built in the United States emit 95 % fewer pollutants than uncontrolled vehicles when they are new. However, studies indicate that proper maintenance is needed to obtain the full benefit of vehicle emission controls. Furthermore, there is evidence that a significant percentage of the vehicle fleet is not properly maintained. This has led to the creation of motor vehicle Inspection/Maintenance (I/M) Programs. I/M programs inspect vehicles for indications that they are emitting excessive quantities of pollutants. Vehicles that fail the inspection must be repaired in order to comply with program requirements. The first I/M programs were implemented in the United States in the early 1970s. With substantial urging from the federal government, most of the U.S. states with severe air pollution problems have implemented I/M programs. Recently, with the passage of the U.S. Clean Air Act Amendments of 1990, many states have been required to significantly upgrade the performance and coverage of their I/M programs. I/M programs also have been implemented in Europe and recently in Asia. This presentation reviews developments in I/M programs for light-duty gasoline powered vehicles. Developments in I/M programs for diesel powered vehicles are briefly described. (author)

  20. A flicker noise/IM3 cancellation technique for active mixer using negative impedance

    NARCIS (Netherlands)

    Cheng, W.; Annema, Anne J.; Wienk, Gerhardus J.M.; Nauta, Bram

    2013-01-01

    Abstract—This paper presents an approach to simultaneously cancel flicker noise and IM3 in Gilbert-type mixers, utilizing negative impedances. For proof of concept, two prototype double-balanced mixers in 0.16- m CMOS are fabricated. The first demonstration mixer chip was optimized for full IM3

  1. Real-time resource availability signalling in IMS-based networks

    NARCIS (Netherlands)

    Ozcelebi, T.; Radovanovic, I.; Lukkien, J.J.

    2007-01-01

    The emerging converged IP multimedia subsystem (IMS) allows the use of unlicensed, nondedicated and nondeterministic computer access networks for delivering IP multimedia services. To provide end-to-end quality-of-service (QoS) over such networks combined with the IMS core network, for resource

  2. IMS Intra- and Inter Domain End-to-End Resilience Analysis

    DEFF Research Database (Denmark)

    Kamyod, Chayapol; Nielsen, Rasmus Hjorth; Prasad, Neeli R.

    2013-01-01

    This paper evaluated resilience of the reference IMS based network topology in operation through the keys reliability parameters via OPNET. The reliability behaviors of communication within similar and across registered home IMS domains were simulated and compared. Besides, the reliability effects...

  3. Strukturwandel, Verbandsabstinenz, Tarifflucht : zur Lage der Unternehmen und Arbeitgeberverbände im ostdeutschen verarbeitenden Gewerbe

    OpenAIRE

    Ettl, Wilfried; Heikenroth, André

    1996-01-01

    "Im Kontext der am Start der ostdeutschen Transformation vorgenommenen wirtschaftspolitischen Richtungsentscheidungen erwies sich die flächentarifvertragliche Normierung von Arbeits- und Entlohnungsbedingungen für die Arbeitgeberverbände als organisationspolitisch dysfunktional, weil sie der Differenzierung betriebswirtschaftlicher Kostenbedingungen und Interessenlagen im rasanten Strukturwandel nicht gerecht werden konnte. Anhand der Ergebnisse einer Befragung ostdeutscher ...

  4. NDIA 2018 IM and EM Technology Symposium: Innovative Insensitive Munition Solutions for Enhanced Warfighter Effectiveness

    Science.gov (United States)

    2018-04-26

    2018 IM & EM TECHNOLOGY SYMPOSIUM INNOVATIVE INSENSITIVE MUNITION SOLUTIONS FOR ENHANCED WARFIGHTER EFFECTIVENESS April 23 – 26, 2018 Doubletree by...IM & EM TECHNOLOGY SYMPOSIUM On behalf of the Insensitive Munitions and Energetic Materials Committee and our MSIAC partner, I would like to...welcome you to the 2018 Insensitive Munitions and Energetic Materials Technology Symposium. This international gathering of the top chemists, system

  5. World-wide developments in motor vehicle inspection/maintenance (I/M) programs

    Energy Technology Data Exchange (ETDEWEB)

    Klausmeier, R [Consulting Inc., Austin, TX (United States); Kishan, S [Radian Corporation, Austin, TX (United States)

    1996-12-31

    Motor vehicles contribute much to urban air pollution. As a result, most governments have enacted emission standards that significantly lower pollutant emission levels from new motor vehicles. For example, vehicles built in the United States emit 95 % fewer pollutants than uncontrolled vehicles when they are new. However, studies indicate that proper maintenance is needed to obtain the full benefit of vehicle emission controls. Furthermore, there is evidence that a significant percentage of the vehicle fleet is not properly maintained. This has led to the creation of motor vehicle Inspection/Maintenance (I/M) Programs. I/M programs inspect vehicles for indications that they are emitting excessive quantities of pollutants. Vehicles that fail the inspection must be repaired in order to comply with program requirements. The first I/M programs were implemented in the United States in the early 1970s. With substantial urging from the federal government, most of the U.S. states with severe air pollution problems have implemented I/M programs. Recently, with the passage of the U.S. Clean Air Act Amendments of 1990, many states have been required to significantly upgrade the performance and coverage of their I/M programs. I/M programs also have been implemented in Europe and recently in Asia. This presentation reviews developments in I/M programs for light-duty gasoline powered vehicles. Developments in I/M programs for diesel powered vehicles are briefly described. (author)

  6. Calibración de imágenes de radares meteorológicos

    Directory of Open Access Journals (Sweden)

    Virgilio Santander Socorras Quintero

    2014-04-01

    Full Text Available En este documento se ilustran las técnicas de fusión de imágenes para complementar y calibrar la información meteorológica presente en imágenes de radares terrestres con el uso de imágenes satelitales meteorológicas. Para realizar la calibración de las imágenes de radares terrestres se implementó un método de fusión de imágenes basado en la herramienta matemática transformada wavelet discreta. Ya que existe una familia de wavelets, es necesario determinar cuál wavelet ofrece el mejor resultado; para esto se determina la correlación existente entre los resultados de fusión de diferentes wavelets y las imágenes uti-lizadas en cada fusión. Se define una metodología para selección de umbral global de segmentación y una metodología para realizar la calibración de las imágenes de radares terrestres. Siguiendo la metodología de calibración de imágenes, se generan algunos resultados y se muestran sus ventajas.

  7. Computer-Aided Teaching Using MATLAB/Simulink for Enhancing an IM Course With Laboratory Tests

    Science.gov (United States)

    Bentounsi, A.; Djeghloud, H.; Benalla, H.; Birem, T.; Amiar, H.

    2011-01-01

    This paper describes an automatic procedure using MATLAB software to plot the circle diagram for two induction motors (IMs), with wound and squirrel-cage rotors, from no-load and blocked-rotor tests. The advantage of this approach is that it avoids the need for a direct load test in predetermining the IM characteristics under reduced power.…

  8. A Unidimensional Instrument for Measuring Internal Marketing Concept in the Higher Education Sector: IM-11 Scale

    Science.gov (United States)

    Yildiz, Suleyman Murat; Kara, Ali

    2017-01-01

    Purpose: Although the existing internal marketing (IM) scales include various scale items to measure employee motivation, they fall short of incorporating the needs and expectations of service sector employees. Hence, the purpose of this study is to present a practical instrument designed to measure the IM construct in the higher education sector.…

  9. Long-term liablities of coal mining; Ewigkeitslasten im Kohlenbergbau

    Energy Technology Data Exchange (ETDEWEB)

    Frenz, Walter (ed.) [GDMB Gesellschaft der Metallurgen und Bergleute e.V., Clausthal-Zellerfeld (Germany)

    2016-07-01

    The closer the end of coal mining in 2018, the more the issue of groundwater re-emergence in the Ruhr area is also being considered. This is especially the case because currently the subject of restitution and liability issues in the area of contaminated sites of the peaceful use of nuclear energy is discussed. In addition, the companies concerned lost considerable value on the stock market. For this reason, the question of whether the financial provisions in the created foundation are sufficient to shoulder the expected responsibilities and measures also arises with regard to coal mining. The question is which measures are to be taken and where damages can occur. Additional impulses are given by the Meggen judgment of the BVerwG of 18.12.2014, which interpreted the responsibility of the mining companies very widely. In the Rhineland, an earthquake hit 2.4 on 22.12.2015 - probably due to a rise in groundwater around the closed opencast mine Bergheim. All these questions are included in the colloquium on economics and environmental law on 26 January 2016. This also includes experiences and problems from other federal states such as Brandenburg and Saxony. [German] Je naeher das Ende des Steinkohlenbergbaus 2018 rueckt, desto eher geraet auch die Frage des Grundwasserwiederanstiegs im Ruhrgebiet ins Blickfeld. Das gilt zumal deshalb, weil aktuell ueber Rueckstellung und Haftungsfragen im Bereich der Altlasten der friedlichen Nutzung der Kernenergie diskutiert wird. Zudem verloren die betroffenen Gesellschaften an der Boerse erheblich an Wert. Daher stellt sich auch in Bezug auf den Steinkohlenbergbau die Frage, ob die finanziellen Rueckstellungen in der geschaffenen Stiftung ausreichen, um die zu erwartenden Verantwortlichkeiten und Massnahmen schultern zu koennen. Vorgelagert ist die Frage, welche Massnahmen zu ergreifen sind und wo Schaeden auftreten koennen. Zusaetzliche Impulse bekommt diese Frage durch das Meggen-Urteil des BVerwG vom 18.12.2014, welches die

  10. Biomechanisch-kinemetrische Bewegungsanalyse und Ansätze zur Bewegungssteuerung für ein Training im Wellenreiten

    OpenAIRE

    Matschkur, Tina

    2008-01-01

    Neben der biomechanisch-kinemetrischen Bewegungsanalyse einzelner ausgewählter Techniken im Wellenreiten beschäftigt sich diese Dissertation auch ansatzweise im Rahmen einer elektromyographischen Fallstudie mit der muskulären Koordination bei der Bewegungsausführung im Surfen, um daraus Schlussfolgerungen für das Training im Wellenreiten treffen zu können. Ein geschichtlicher und wissenschaftlicher Überblick über das Wellenreiten leitet das Thema ein und macht somit auf die besondere Ausgangs...

  11. ODE/IM correspondence and the Argyres-Douglas theory

    Science.gov (United States)

    Ito, Katsushi; Shu, Hongfei

    2017-08-01

    We study the quantum spectral curve of the Argyres-Douglas theories in the Nekrasov-Sahashvili limit of the Omega-background. Using the ODE/IM correspondence we investigate the quantum integrable model corresponding to the quantum spectral curve. We show that the models for the A 2 N -type theories are non-unitary coset models ( A 1)1 × ( A 1) L /( A 1) L+1 at the fractional level L=2/2N+1-2 , which appear in the study of the 4d/2d correspondence of N = 2 superconformal field theories. Based on the WKB analysis, we clarify the relation between the Y-functions and the quantum periods and study the exact Bohr-Sommerfeld quantization condition for the quantum periods. We also discuss the quantum spectral curves for the D and E type theories.

  12. Think tank in the desert sand; Ideenschmiede im Wuestensand

    Energy Technology Data Exchange (ETDEWEB)

    Ullrich, Sven

    2013-11-01

    The international architectural competition shows imaginative concepts for living in energy self-sufficient houses. A total of 109 student teams had applied. Only 19 were allowed to build their solar house in Irvine, California. In addition to architectural elements and an attractive design, the jury members also evaluate the technical concepts of the buildings. The winners came from Austria with their building ''Lisi''. [German] Der internationale Architekturwettbewerb zeigt ideenreiche Konzepte zum Wohnen in energieautarken Haeusern. Insgesamt 109 Studenten-Teams hatten sich beworben. Nur 19 durften ihr Solarhaus im kalifornischen Irvine aufbauen. Neben architektonischen Elementen und einem attraktiven Design bewerten die Jurymitglieder auch die Technikkonzepte der Gebaeude. Die Gewinner kamen aus Oesterreich mit ihrem Gebaeude ''Lisi''.

  13. Berechnung verkehrlicher Substitutionseffekte im Personenverkehr bei Online-Shopping

    Science.gov (United States)

    Nerlich, Mark R.; Schiffner, Felix; Vogt, Walter; Rauh, Jürgen; Breidenbach, Petra

    Für Güter des täglichen, mittelfristigen und langfristigen Bedarfs sowie für das Beispiel Baumarktartikel wird das Potenzial für Personenverkehrsaufwand von Einkaufsaktivtäten quantitativ abgeschätzt. Die entwickelten Algorithmen behandeln die einkaufsvorbereitende Information und den eigentlichen Einkauf, d.h. den Erwerb eines Gutes, separat. Informationsaktivitäten haben insbesondere bei höherwertigen Gütern einen hohen Stellenwert und damit auch verkehrliche Relevanz. Wie Berechnungen zeigen, spart Online-Shopping Informations- und Einkaufsverkehrsaufwand im Pkw-Verkehr ein. Die notwendigen Eingangsdaten wie differenzierte Informations- und Einkaufshäufigkeiten sowie verkehrliche Parameter zu Verkehrsmittelwahl, Entfernungen und Wegekopplungen wurden aus eigenen Erhebungen gewonnen.

  14. Disturbance observer based current controller for vector controlled IM drives

    DEFF Research Database (Denmark)

    Teodorescu, Remus; Dal, Mehmet

    2008-01-01

    induction motor (IM) drives. The control design, based on synchronously rotating d-q frame model of the machine, has a simple structure that combines the proportional portion of a conventional PI control and output of the observer. The observer is predicted to estimate the disturbances caused by parameters...... coupling effects and increase robustness against parameters change without requiring any other compensation strategies. The experimental implementation results are provided to demonstrate validity and performance of the proposed control scheme.......In order to increase the accuracy of the current control loop, usually, well known parameter compensation and/or cross decoupling techniques are employed for advanced ac drives. In this paper, instead of using these techniques an observer-based current controller is proposed for vector controlled...

  15. Single-molecule studies of the Im7 folding landscape.

    Science.gov (United States)

    Pugh, Sara D; Gell, Christopher; Smith, D Alastair; Radford, Sheena E; Brockwell, David J

    2010-04-23

    Under appropriate conditions, the four-helical Im7 (immunity protein 7) folds from an ensemble of unfolded conformers to a highly compact native state via an on-pathway intermediate. Here, we investigate the unfolded, intermediate, and native states populated during folding using diffusion single-pair fluorescence resonance energy transfer by measuring the efficiency of energy transfer (or proximity or P ratio) between pairs of fluorophores introduced into the side chains of cysteine residues placed in the center of helices 1 and 4, 1 and 3, or 2 and 4. We show that while the native states of each variant give rise to a single narrow distribution with high P values, the distributions of the intermediates trapped at equilibrium (denoted I(eqm)) are fitted by two Gaussian distributions. Modulation of the folding conditions from those that stabilize the intermediate to those that destabilize the intermediate enabled the distribution of lower P value to be assigned to the population of the unfolded ensemble in equilibrium with the intermediate state. The reduced stability of the I(eqm) variants allowed analysis of the effect of denaturant concentration on the compaction and breadth of the unfolded state ensemble to be quantified from 0 to 6 M urea. Significant compaction is observed as the concentration of urea is decreased in both the presence and absence of sodium sulfate, as previously reported for a variety of proteins. In the presence of Na(2)SO(4) in 0 M urea, the P value of the unfolded state ensemble approaches that of the native state. Concurrent with compaction, the ensemble displays increased peak width of P values, possibly reflecting a reduction in the rate of conformational exchange among iso-energetic unfolded, but compact conformations. The results provide new insights into the initial stages of folding of Im7 and suggest that the unfolded state is highly conformationally constrained at the outset of folding. (c) 2010 Elsevier Ltd. All rights reserved.

  16. Zur Palökologie der Euproopiden im Nordwestdeutschen Oberkarbon

    Directory of Open Access Journals (Sweden)

    S. Schultka

    2000-01-01

    Full Text Available Tierische Fossilien aus dem Westfal D des Piesbergs bei Osnabrück sind seit 1860 vereinzelt immer wieder beschrieben worden. Doch erst durch die Funde der letzten 30 Jahre zählt der Piesberg zu den bedeutendsten Fundorten terrestrischer Fauna im Karbon. Erstmals werden 45 stratifiziert aufgesammelte Individuen von Euproops untersucht. Einige Details der Morphologie sowie eine dichte Behaarung werden beschrieben. Auf der Basis dieser Merkmale sowie der Verteilung juveniler und adulter Individuen im geologischen Profil wird eine Deutung des Lebensraumes der Euproopiden versucht. Danach hielten sich die juvenilen Individuen dieser Tiergruppe als Laubstreubewohner in feuchten Spülsäumen flacher ruhiger Gewässer und Laubstreuhorizonten auf. Die adulten Formen lebten vornehmlich benthisch in ufernahen Gewässern und verließen wohl nur noch gelegentlich das Wasser. Since 1860 articulated fossils of terrestrial taxa have been described from lower Westfalian D sediments of the Piesberg section near Osnabrück (northwestern Germany. In this paper 45 individuals of the genus Euproops, sampled from particular levels in the profile, are reported on for the first time. Analysis of the fossil material reveals new morphological details – especially setae densely covering the ventral side – that, combined with the geological setting of the profile, gives novel insights into the palaeoenvironment and to the hypothesis of subaerial activity. Young individuals of Euproops may have been "litter dwellers" inhabiting forest-litter and partly decayed plant material that had washed ashore. By contrast, adults formed a principal component of the nearshore benthic fauna. They were able to leave the water, but only for short periods. This is proved by the occurence of adults and juveniles in different lithologies. doi:10.1002/mmng.20000030105

  17. 78 FR 79498 - Notice Pursuant to The National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2013-12-30

    ... Production Act of 1993--IMS Global Learning Consortium, Inc. Notice is hereby given that, on November 22....C. Sec. 4301 et seq. (``the Act''), IMS Global Learning Consortium, Inc. (``IMS Global'') has filed..., Carson-Dellosa Publishing, Greensboro, NC; Data Recognition Group, Maple Grove, MN; Nelson Education Ltd...

  18. 78 FR 7456 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2013-02-01

    ... District, Selbyville, DE; learning.com , Portland, OR; State of Michigan Dept. of Education, Bureau of... Production Act of 1993--IMS Global Learning Consortium, Inc. Notice is hereby given that, on December 28....C. 4301 et seq. (``the Act''), IMS Global Learning Consortium, Inc. (``IMS Global'') has filed...

  19. [Glanz und Elend - Mythos und Wirklichkeit der Herrenhäuser im Baltikum] / Karsten Brüggemann

    Index Scriptorium Estoniae

    Brüggemann, Karsten, 1965-

    2014-01-01

    Arvustus: Glanz und Elend - Mythos und Wirklichkeit der Herrenhäuser im Baltikum. Hrsg. von Ilse von zur Mühlen im Auftrag der Carl-Schirren-Gesellschaft e.V. und des Ostpreußischen Landesmuseums Lüneburg. Kunstverlag Josef Fink. Lindenberg im Allgäu 2012

  20. IMS Learning Design desde dentro. Una especificación para crear escenarios de aprendizaje online (parte I)

    NARCIS (Netherlands)

    Burgos, Daniel; Berbegal, Nidia; Griffiths, David; Tattersall, Colin; Koper, Rob

    2005-01-01

    IMS Learning Design, IMS LD de ahora en adelante (IMS, 2003), es una especificación centrada en formación online o e-learning y que permite modelar programaciones curriculares o lecciones presenciales de forma que puedan ser seguidas online, construyendo lo que se denomina Unidades de Aprendizaje

  1. RETIRED A STARS AND THEIR COMPANIONS. III. COMPARING THE MASS-PERIOD DISTRIBUTIONS OF PLANETS AROUND A-TYPE STARS AND SUN-LIKE STARS

    International Nuclear Information System (INIS)

    Bowler, Brendan P.; Johnson, John Asher; Liu, Michael C.; Marcy, Geoffrey W.; Peek, Kathryn M. G.; Henry, Gregory W.; Fischer, Debra A.; Clubb, Kelsey I.; Reffert, Sabine; Schwab, Christian; Lowe, Thomas B.

    2010-01-01

    We present an analysis of ∼5 years of Lick Observatory radial velocity measurements targeting a uniform sample of 31 intermediate-mass (IM) subgiants (1.5 ∼ * /M sun ∼ +9 -8 %, which is significantly higher than the 5%-10% frequency observed around solar-mass stars. The median detection threshold for our sample includes minimum masses down to {0.2, 0.3, 0.5, 0.6, 1.3} M Jup within {0.1, 0.3, 0.6, 1.0, 3.0} AU. To compare the properties of planets around IM stars to those around solar-mass stars we synthesize a population of planets based on the parametric relationship dN ∝ M α P β dlnMdlnP, the observed planet frequency, and the detection limits we derived. We find that the values of α and β for planets around solar-type stars from Cumming et al. fail to reproduce the observed properties of planets in our sample at the 4σ level, even when accounting for the different planet occurrence rates. Thus, the properties of planets around A stars are markedly different than those around Sun-like stars, suggesting that only a small (∼50%) increase in stellar mass has a large influence on the formation and orbital evolution of planets.

  2. Doing religion im Phowa-Kurs: Praxeologische und reflexionslogische Studien zum "bewussten Sterben" im Diamantweg-Buddhismus

    Directory of Open Access Journals (Sweden)

    Werner Vogd

    2015-07-01

    Full Text Available Im Sinne einer pragmatistischen Perspektive, wie sie zuerst John DEWEY (1987 [1934] in Anschluss an William JAMES formulierte, ist das Religiöse weniger als eine spezifische Art von experience zu verstehen, denn als ein adjustment hin zu einer epistemischen Perspektive, die alle Erfahrungen in einem veränderten Licht erscheinen lässt. Religiosität zielt damit auf ein besonderes Selbst- und Weltverhältnis, in dem die Beziehung zwischen Selbst und Welt aus einer ganzheitlichen Perspektive betrachtet wird. Wie aber können fremde, auf den ersten Blick in ihrer Genese unwahrscheinliche und unter modernen Verhältnissen zudem anzweifelbare religiöse Haltungen und Sinnsysteme etabliert werden? Am Beispiel der im tibetischen Buddhismus verbreiteten Phowa-Meditation des "bewussten Sterbens" wird untersucht, wie für westliche Adept/innen auf den ersten Blick befremdlich und esoterisch anmutende spirituelle Lehren mit zunehmender Praxis an Evidenz und Sinnhaftigkeit gewinnen können, indem sich Gruppenprozesse, Visualisierungen, körperorientierte Übungen und psychisches Erleben zu einem übergreifenden Arrangement verschränken. Die empirische Datengrundlage für die Untersuchung liefern narrative Interviews mit westlich sozialisierten Schüler/innen und Lehrer/innen des Diamantweg-Buddhismus, der derzeit größten buddhistischen Gemeinschaft des tibetischen Buddhismus in Deutschland. Die Auswertung der Interviews erfolgte angelehnt an die dokumentarische Methode, erweitert durch eine Kontexturanalyse, um den Reflexionsverhältnissen gerecht zu werden, die den religiösen Selbst- und Weltbezug aufspannen. URN: http://nbn-resolving.de/urn:nbn:de:0114-fqs1503179

  3. Nachlassverzeichnisse im Netz – Ein Projekt der Bayerischen Staatsbibliothek

    Directory of Open Access Journals (Sweden)

    Maximilian Schreiber

    2015-12-01

    Full Text Available Nachlässe rücken in der wissenschaftlichen Forschung immer mehr in den Fokus, wie etwa die stark gestiegenen Nutzerzahlen der Bayerischen Staatsbibliothek (BSB über die letzten Jahre hinweg deutlich zeigen. Umso wichtiger ist insbesondere für Bibliotheken mit umfangreichen und fachlich breit gestreuten Nachlassbeständen eine möglichst genaue Erschließung im Internet, um der wissenschaftlichen Forschung einen schnellen Zugriff auf diese unikalen Materialien zu ermöglichen. Bei der digitalen Bereitstellung und vernetzten Erschließung verfolgt die BSB mit ihren rund 1.100 Nachlässen eine doppelte Strategie. Einerseits wird versucht, ausgewählte Nachlässe im Verbundsystem Kalliope zu katalogisieren. Andererseits werden die Erschließungsdaten zu den bereits erschlossenen und den erst grob geordneten Nachlässen, die in Form von hand- oder maschinenschriftlichen Listen sowie als Wordlisten vorliegen, digitalisiert und über den Bibliothekskatalog online zur Verfügung gestellt, um den Nutzern die Möglichkeit zu geben, sich so über die vorhandenen Bestände zu informieren. Wie dieses Projekt genau durchgeführt wurde, ist Gegenstand des Artikels. Special collections and personal papers are becoming more and more important for academic research, as is shown clearly by the increasing usage numbers at the Bavarian State Library (BSB over the last couple of years. Especially for libraries with extensive and manifold collections of estates, it is important to present these unique materials in a well-indexed manner on the internet, in order to give the scientific community easy access. The Bavarian State Library, which keeps more than 1.100 estates of personal papers, pursues a double strategy: On the one hand, selected estates are fully cataloged in the database “Kalliope”. As this procedure is likely to take a long time, the library on the other hand has been digitizing older hand- or typewritten lists with information

  4. Workflows des Projektes Mengenentsäuerung im Deutschen Literaturarchiv

    Directory of Open Access Journals (Sweden)

    Melanie Kubitza

    2018-03-01

    Full Text Available Das Deutsche Literaturarchiv Marbach (DLA begann 1998 mit der Evaluation geeigneter Entsäuerungsverfahren für seine unikalen Archiv- und Bibliotheksbestände. Seit 2013 erfolgt eine kontinuierliche Entsäuerungsbehandlung der Buchbestände mit dem Papersave-Verfahren der Nitrochemie AG, mit einer jährlichen Entsäuerungsleistung von insgesamt rund 4,0 t in acht Chargen. Neben den Magazinbeständen mit Erstausgaben bis hin zur Sekundärliteratur zu den einzelnen Autoren, wurden nun auch erstmals erfolgreich Bände aus den Spezialsammlungen des DLA entsäuert, zu denen auch Autorenbibliotheken gehören. Der Beitrag erläutert neben der Zusammenarbeit des Referats Bestandserhaltung mit den Abteilungen Bibliothek und Archiv auch Teilaspekte der Workflows aus restauratorischer Sicht. Dabei steht die intern entwickelte Barcode-unterstützte Dokumentation der Maßnahme auf Exemplarsebene im Bestandskatalog Kallías im Fokus. Sie enthält neben den verfahrensrelevanten Daten u. a. Informationen zu den Ausschlusskriterien oder alternativen und ergänzenden Maßnahmen der Verpackung, Restaurierung oder Digitalisierung. Das Marbacher Mengenentsäuerungsprojekt führt an den Originalen eine Qualitätskontrolle bezüglich aufgetretener Nebenwirkungen am Bibliotheksgut durch und kontrolliert die Langzeitwirkung der Entsäuerung an originalähnlichen Referenzbänden mit nicht zerstörungsfreien Messungen. In 1998 the German Literature Archive (DLA began to evaluate appropriate deacidification processes for its unique archive and library stock. Since 2013, Nitrochemie’s papersave procedure has been used for an ongoing deacidification treatment of the bookstock with an annual output of about 4,0 t in eight batches. The deacidification process has been successfully used for primary and secondary literature as well as - for the first time - for volumes of the rare materials collection of the DLA, including authors‘ libraries. The article describes the

  5. Detection of microbial volatile organic compounds (MVOC) by means of ion mobility spectroscopy (IMS); Detektion leicht fluechtiger organischer Verbindungen mikrobiellen Ursprungs (MVOC) mittels Ionenmobilitaetsspektrometrie (IMS)

    Energy Technology Data Exchange (ETDEWEB)

    Tiebe, Carlo

    2010-07-01

    Traces of microbial volatile organic compounds (MVOCs) can indicate the growth of moulds in the indoor air. The application of ion mobility spectrometry (IMS) is a very promising method for the detection of these MVOCs due to its high sensitivity. A mobile IMS device was tested to use this analytical-chemical method for in situ indoor air diagnostics. The first part of this work describes the test gas generation of 14 MVOCs in the laboratory. The test gases were produced by preparation of permeation procedures. Due to the MVOCs test gases IMS parameters like reduced mobility (K{sub 0}), relative drift time (t{sub rd}), the concentration dependency of MVOCs signals were determined and the limit of detection (LOD) was calculated. The LODs are in the range of 2 to 192 {mu}g m{sup -3} (1 to 51 ppb{sub V}). In the second part of this manuscript seven different mould species were cultivated on nutrient media and their MVOCs emissions were explored. It was found out, that the MVOCs emissions of moulds have a dependency of species and of their cultivation time. These results are confirmed by principal component analysis (PCA). The identification of these MVOCs was performed by test-related GC-MS analysis and approved these results. The MVOCs emissions were explored in the cultivation of mould mixtures on three different building materials. The IMS-results were interpreted chemo metrically by PCA. It was possible to find different emission patterns of cultivated moulds on building materials without an identification of the MVOCs inside the emission chamber. In 27 field trials of different indoor environments (rooms) the IMS was tested to detect MVOCs. In 59 % of the cases a positive correlation is determined between visible mould-infested rooms and the detected MVOCs by IMS. (orig.)

  6. Enhancing end-to-end QoS for multimedia streaming in IMS-based networks

    NARCIS (Netherlands)

    Ozcelebi, T.; Radovanovic, I.; Chaudron, M.R.V.

    2007-01-01

    Convergence of the emerging IP Multimedia Subsystem(IMS) includes unlicensed, nondedicated and nondeterministic hence uncontrollable. computer access, networks for IP multimedia services. It enables provision of resource demanding real-time services and multimedia communication raising new

  7. [Stefan Hartmann. Revaler Handwerker im Spiegel fer Ratsprotokolle von 1722 bis 1755] / Paul Kaegbein

    Index Scriptorium Estoniae

    Kaegbein, Paul

    2007-01-01

    Arvustus: Stefan Hartmann. Revaler Handwerker im Spiegel fer Ratsprotokolle von 1722 bis 1755. In : Ostseeprovinzen, baltische Staaten und das Nationale. Münster : LIT, 2005. lk. 89-112. Kanuti gildi koondunud ametite organisatsioonist ja struktuurist

  8. [Perceptions of Loss, Decline and Doom in the Baltic Sea - Untergangsvorstellungen im Ostseeraum] / David Feest

    Index Scriptorium Estoniae

    Feest, David, 1969-

    2011-01-01

    Arvustus : Perceptions of Loss, Decline and Doom in the Baltic Sea - Untergangsvorstellungen im Ostseeraum. Berlin : Berliner Wissenschafts-Verlag, 2004. (Die Ostseeregione: Nördliche Dimensionen - Europäische Perspektiven. 1)

  9. Federal Workforce: Attrition Rates at Ex-Im Bank and Similar Agencies

    National Research Council Canada - National Science Library

    Hess, James

    1997-01-01

    .... Financing and protection provided by Ex-Im Bank includes (1) loans to foreign buyers of U.S. exports, (2) loan guarantees to commercial lenders providing repayment protection for loans to foreign buyers...

  10. [Umgesiedelt - Vertrieben. Deutschbalten und Polen 1939-1945 im Warthegau] / Karsten Brüggemann

    Index Scriptorium Estoniae

    Brüggemann, Karsten, 1965-

    2012-01-01

    Arvustus: Umgesiedelt - Vertrieben. Deutschbalten und Polen 1939-1945 im Warthegau / hrsg. von Eckhart Neander und Andrzej Sakson. Marburg : Verlag Herder-Institut 2010. (Tagungen zur Ostmitteleuropa-Forschung, 29)

  11. Global R&D through the Intelligent Manufacturing Systems (IMS) program

    Science.gov (United States)

    Huray, Paul G.

    1997-01-01

    The industry-led, international intelligent manufacturing systems (IMS) program provides a special vehicle for joint research and development between government, industry and academia in the United States, Canada, Japan, Australia, and Europe. Since its beginning in 1989, the IMS program has progressed through a feasibility phase which demonstrated that international legal barriers, trade issues, and intellectual property problems could be overcome. The program is constructed to provide higher quality design, customized products, shorter delivery cycles and lower costs. Interactions between partner companies have led to new business opportunities for mutual profit and some claim to have learned strategic information about their international competitors. The IMS program is growing through the participation of hundreds of corporate and university partners who share responsibilities in specific projects and jointly reap benefits for their manufacturing products and processes. The logic for choosing or not choosing the IMS mechanisms will be discussed and R and D projects will be identified.

  12. MALDI (matrix assisted laser desorption ionization) Imaging Mass Spectrometry (IMS) of skin: Aspects of sample preparation.

    Science.gov (United States)

    de Macedo, Cristiana Santos; Anderson, David M; Schey, Kevin L

    2017-11-01

    MALDI (matrix assisted laser desorption ionization) Imaging Mass Spectrometry (IMS) allows molecular analysis of biological materials making possible the identification and localization of molecules in tissues, and has been applied to address many questions on skin pathophysiology, as well as on studies about drug absorption and metabolism. Sample preparation for MALDI IMS is the most important part of the workflow, comprising specimen collection and preservation, tissue embedding, cryosectioning, washing, and matrix application. These steps must be carefully optimized for specific analytes of interest (lipids, proteins, drugs, etc.), representing a challenge for skin analysis. In this review, critical parameters for MALDI IMS sample preparation of skin samples will be described. In addition, specific applications of MALDI IMS of skin samples will be presented including wound healing, neoplasia, and infection. Copyright © 2017 Elsevier B.V. All rights reserved.

  13. Seismic Calibration of Group 1 IMS Stations in Eastern Asia for Improved IDC Event Location

    National Research Council Canada - National Science Library

    Murphy, J. R; Rodi, W. L; Johnson, M; Sultanov, J. D; Bennett, T. J; Toksoz, M. N; Ovtchinnikov, V; Barker, B. W; Rosca, A. M; Shchukin, Y

    2006-01-01

    .... In order to establish a robust nuclear test monitoring capability, it is necessary to calibrate the IMS seismic stations used in monitoring, to account for systematic deviations from the nominal travel time curves...

  14. Detection of Atmospheric Explosions at IMS Monitoring Stations using Infrasound Techniques

    National Research Council Canada - National Science Library

    Christie, Douglas R; Kennett, Brian L; Tarlowski, Chris

    2006-01-01

    Work is continuing on the development of infrasound techniques that can be used to improve detection, location and discrimination capability for atmospheric nuclear explosions at International Monitoring System (IMS...

  15. [David Feest. Zwangskollektivierung im Baltikum : die Sowjetisierung des estnischen Dorfes 1944-1953] / Anu Mai Kõll

    Index Scriptorium Estoniae

    Kõll, Anu Mai, 1946-

    2008-01-01

    Arvustus: Feest, David. Zwangskollektivierung im Baltikum : die Sowjetisierung des estnischen Dorfes 1944-1953. Köln [etc.] : Böhlau, 2007. Esimesest rahvusvaheliselt kättesaadavast laiahaardelisest Eesti kollektiviseerimist käsitlevast teosest

  16. Der Einsatz von Online-Datenbanken für Objektinnovationen im Systemgeschäft

    OpenAIRE

    Noch, Rainer

    1990-01-01

    Der Einsatz von Online-Datenbanken für Objektinnovationen im Systemgeschäft. - Augsburg : FGM-Verl., 1990. - 62, LVII S. - Zugl.: Augsburg, Univ., Diplomarb. - (Arbeitspapiere zur Schriftenreihe Schwerpunkt Marketing ; 31)

  17. Physik im 21. Jahrhundert Essays zum Stand der Physik

    CERN Document Server

    Röss, Dieter

    2011-01-01

    Physik ist eine höchst lebendige Wissenschaft! Einmal gewonnene Grundlagen-Erkenntnisse lassen sich auf unübersehbar viele Anwendungsbereiche anwenden. Experimentell gesichertes Detailwissen wächst heute in wenigen Dekaden lawinenartig in eine Größenordnung, die selbst für den Fachmann im Ganzen nicht mehr überschaubar ist. Dieses Werk wählt einen neuen Zugang: Beschränkung auf wenige, exemplarische Teilgebiete der modernen Physik bei Darstellung ihrer Zusammenhänge in aller Tiefe. Verfasser der Beiträge sind herausragende Wissenschaftler mit großer Lebenserfahrung, die dem Leser in ihrem Fachgebiet Zusammenhänge erschließen und Ausblicke in zukünftige Möglichkeiten eröffnen. Mit ihrer in langjähriger Lehrtätigkeit gesammelten Erfahrung formulieren sie das in einem reichen Forscherleben gesammeltes Wissen ohne Abstriche an den Erkenntniswert so, dass es von einer elementaren Basis aus zugänglich ist.

  18. Performance analysis of IMS based LTE and WIMAX integration architectures

    Directory of Open Access Journals (Sweden)

    A. Bagubali

    2016-12-01

    Full Text Available In the current networking field many research works are going on regarding the integration of different wireless technologies, with the aim of providing uninterrupted connectivity to the user anywhere, with high data rates due to increased demand. However, the number of objects like smart devices, industrial machines, smart homes, connected by wireless interface is dramatically increasing due to the evolution of cloud computing and internet of things technology. This Paper begins with the challenges involved in such integrations and then explains the role of different couplings and different architectures. This paper also gives further improvement in the LTE and Wimax integration architectures to provide seamless vertical handover and flexible quality of service for supporting voice, video, multimedia services over IP network and mobility management with the help of IMS networks. Evaluation of various parameters like handover delay, cost of signalling, packet loss,, is done and the performance of the interworking architecture is analysed from the simulation results. Finally, it concludes that the cross layer scenario is better than the non cross layer scenario.

  19. Politische Bildung im Kontext von Regierung, Unterricht und Zucht

    Directory of Open Access Journals (Sweden)

    Thomas Rucker

    2014-02-01

    Full Text Available Johann Friedrich Herbart (1776-1841 gilt als der Begründer der wissenschaftlichen Pädagogik. In diesem Beitrag wird zu zeigen versucht, dass Herbart die Unterstützung politischer Bildung als eine Aufgabe von Regierung, Unterricht und Zucht bestimmt und in seinem Werk wichtige „Bausteine“ für eine Theorie der politischen Bildung unter den Bedingungen von Erziehung vorlegt hat. Nach Herbart ist das politische Selbst- und Weltverhältnis auf Sachverhalte bezogen, die nicht nur die Lebensführung einzelner Menschen, sondern die Lebensführung einer Mehrzahl von Menschen betreffen. Nicht das Zusammenleben von Menschen generell ist jedoch Orientierungsgesichtspunkt des politischen Selbst- und Weltverhältnisses, sondern nur das problematisch gewordene Zusammenleben. Politik ergibt sich nach Herbart aus einem Konflikt hinsichtlich der Frage, wie das Zusammenleben von Menschen geregelt sein sollte. Während die Regierung lediglich mittelbar einen Beitrag zur politischen Bildung leistet, indem sie die Voraussetzungen für Unterricht und Zucht bereitstellt, fungieren die beiden zuletzt genannten Formen von Erziehung als die eigentlichen Medien, in denen die politische Bildung im Sinne Herbarts ihren Ort hat.

  20. Primary fibrosarcoma im small intestine of dog - Case report

    Directory of Open Access Journals (Sweden)

    Geórgia Modé Magalhães

    2015-06-01

    Full Text Available ABSTRACT. Magalhães G.M., Santilli J., Calazans S.G., Nishimura L.T., Cerejo S.A. & Dias F.G.G. [Primary fibrosarcoma im small intestine of dog - Case report.] Fibrossarcoma primário em intestino delgado de cão - Relato de caso. Revista Brasileira de Medicina Veterinária, 37(2:145-148, 2015. Programa de Pós-Graduação em Medicina Veterinária de Pequenos Animais, Universidade de Franca, Av. Dr. Armando Salles Oliveira, 201, Cx postal 82, Parque Universitá- rio, Franca, SP 14404-600, Brasil. E-mail: georgiamode@hotmail.com Intestinal neoplasms are uncommon in dogs, and among the most frequently diagnosed are smooth muscle, lymphomas and carcinomas. The fibrosarcoma is extremely rare in the intestine of animals of this species therefore, little is known about the macroscopic and behavior of this tumor. Given this unusual intestinal disease in dogs, the present study aimed to report a case of intestinal fibrosarcoma in a poodle breed dog, 15 years old, with no apparent clinical signs. The mass was pedunculated, whitish and firm consistency. The diagnosis was made by histopathology. After four months of surgical excision, there was no recurrence and metastasis. We conclude that the intestinal fibrosarcoma has low aggressiveness, are rare and can present macroscopic pediculated.

  1. Cyber-Mobbing als verletzender Sprechakt im Sinne Judith Butlers

    Directory of Open Access Journals (Sweden)

    Katharina Luckner

    2012-12-01

    Full Text Available Dieser Beitrag widmet sich der Frage, inwiefern Cyber-Mobbing unter Bezugnahme auf Judith Butlers sprach- bzw. diskurstheoretisches Konzept als verletzender Sprechakt verstanden werden kann. Zu diesem Zweck werden in einem ersten Schritt die Besonderheiten von Cyber-Mobbing aufgezeigt und im Anschluss daran ein für diesen Text geeigneter Cyber-Mobbing-Begriff formuliert. Daraufhin erfolgt eine interpretative Auseinandersetzung mit der Butlerschen Konzeption verletzender Sprechakte, bevor anschließend anhand wesentlicher Schnittstellen herausgearbeitet wird, inwiefern Cyber-Mobbing als ein solcher verletzender sprachlicher Akt begriffen werden kann. Resümierend werden die zentralen Ergebnisse der Ausarbeitung zusammengefasst und es wird danach gefragt, welche Konsequenzen bzw. Folgen sich hieraus für ein mögliches verändertes Verständnis von Cyber-Mobbing ergeben.This Paper argues whether cyber bullying can be understood as violating speach act with reference to Judith Butler by starting with a definition of cyber bullying (respectively the term cyber 'mobbing' which is used synonymously in German speaking countries and an outline of Butler's theory. After that, the question of a new or different understanding of cyber bullying and its consequences is discussed.

  2. Habitusformen von Eltern im Kontext der Computerspielnutzung ihrer Kinder

    Directory of Open Access Journals (Sweden)

    Henrike Friedrichs

    2014-09-01

    Full Text Available Dieser Artikel stellt die Sichtweisen von Eltern auf das Computerspielverhalten ihrer Kinder und ihr erzieherisches Handeln bezüglich des Computerspielens vor. Die Ergebnisse stammen aus einem Forschungsprojekt der Fakultät für Erziehungswissenschaft der Universität Bielefeld mit dem Titel "Computerspielnutzung aus Elternsicht". Die empirische Studie aus dem Jahr 2014 umfasst 28 leitfadengestützte Interviews mit Elternpaaren. Die Ergebnisse zeigen u. a., dass der mediale Habitus (Kommer/Biermann 2012 die Ausgestaltung des medienerzieherischen Habitus (Friedrichs 2013 beeinflusst; d. h. bspw., dass computerspielerfahrene Eltern ein differenzierteres Medienerziehungsverhalten im Hinblick auf Computerspiele zeigen, als Eltern, die keine eigenen Computerspielerfahrungen gemacht haben. This article shows parental points of view on computer game habits of children and the educational acting of parents concerning computer games. The results are product of the research project "Parental views on children and adolescents playing computer games" of the Faculty of Educational Science of Bielefeld University. The empirical study from 2014 includes 28 qualitative interviews with both parents. The results show among other things that the media-related habitus of parents influences their media-educational habitus. This means e. g. that parents experienced on video games show a more differentiated educational behaviour concerning video games than parents without such kind of experience.

  3. Messung der Konzentration von D-Dimeren zur Ermittlung physiologischer Referenzbereiche im Verlauf der Schwangerschaft

    OpenAIRE

    Pingel, Nadine

    2011-01-01

    Einleitung: D-Dimere (DDIM) sind Fibrinspaltprodukte. Erhöhte Konzentrationen im Blutplasma sind Ausdruck einer verstärkten Aktivierung des Gerinnungs- und Fibrinolysesystems wie bei venösen Thromboembolien. Ebenfalls einen Zustand erhöhter Hyperkoagulabilität stellt die Schwangerschaft dar. Im Rahmen physiologischer Veränderungen steigen die DDIM in dieser Zeit kontinuierlich an. Referenzbereiche hinsichtlich der DDIM-Konzentration beruhen weitestgehend auf Messungen bei nicht-schwangere...

  4. "In allen guten Buchhandlungen ist zu haben". Buchwerbung in Deutschland im 17. und 18. Jahrhundert

    OpenAIRE

    Hauke, Marie-Kristin

    2005-01-01

    Der Buchhandel entwickelte im Laufe des 17. und 18. Jahrhunderts zahlreiche Hilfsmittel zur Absatzförderung, auf die er als Produzent des „Massenartikels“ Buch angewiesen war und die ihn zum Vorreiter der modernen Wirtschaftswerbung machten. Ausgangsbasis dafür waren die im 16. Jahrhundert entstandenen Werbemittel Buchtitel, Titelblatt und Katalog, die durch die Buchanzeigen in verschiedenen Werbeträgern (Zeitung, Zeitschrift, Intelligenzblatt, Buch) sowie einige kleinere Formen (Handzettel, ...

  5. Innovative Techniken und Algorithmen im Bereich Computational-Finance und Risikomanagement

    OpenAIRE

    Liang, Qian

    2012-01-01

    Diese Dissertation besteht aus zwei aktuellen Themen im Bereich Finanzmathematik, die voneinander unabhängig sind. Beim ersten Thema, "Flexible Algorithmen zur Bewertung komplexer Optionen mit mehreren Eigenschaften mittels der funktionalen Programmiersprache Haskell", handelt es sich um ein interdisziplinäres Projekt, in dem eine wissenschaftliche Brücke zwischen der Optionsbewertung und der funktionalen Programmierung geschlagen wurde. Im diesem Projekt wurde eine funktionale Biblio...

  6. Light-weight internet protocol multimedia subsystem (IMS) client: development for smart mobile devices

    CSIR Research Space (South Africa)

    Masonta, M

    2010-11-01

    Full Text Available : IP multimedia Services Identity Module J2ME: Java 2 Micro-Edition JCP: Java Community Process JSR: Java Specification Request MAGNET: My personal Adaptive Global Network MGCF: Media Gateway Control Function MIDP: Mobile Information Device...) .................................................................. 30 Figure 2.15: IMS-Communicator Screenshot (PT Inova??o, 2007) .......................................... 31 Figure 2.16: UCT IMS Client Screenshot (Waiting & Good, 2007) ......................................... 32 Figure 3.1: Sun Java WTK 2...

  7. Multimedia als Entwicklungsfaktor im ländlichen Raum? : Fallbeispiel Wirtschaftsregion Friedrichshafen/Bodensee

    OpenAIRE

    Haupenthal, Edmund; Leuninger, Stefan; Beermann, Petra; Kutter, Martina

    1998-01-01

    Im Rahmen der vorliegenden empirischen Studie in der Wirtschaftsregion Friedrichshafen wurden die Wechselwirkungen zwischen regionalen Strukturfaktoren und „Multimedia-Entwicklungen“ im ländlichen Raum untersucht. Die positive Multimedia-Entwicklung geht auf folgende regionale Erfolgsfaktoren zurück: die politische Akzeptanz der neuen Technologie, die Vorhaltung der Multimedia-Akademie, die regionale Nachfrage, die Verfügbarkeit ausreichenden Know-hows und Humankapitals sowie das Vorhandensei...

  8. Antisemitismus, Shoah und deutsche Verantwortung:(Nach)Wirkungen des Nationalsozialismus im medialen Nahostdiskurs

    OpenAIRE

    Ullrich, Peter

    2010-01-01

    Wahrscheinlich wird kein anderer internationaler Konflikt derart kontrovers und emotional in der bundesrepublikanischen Öffentlichkeit sowie auch und gerade in der politischen Linken diskutiert wie der israelisch-palästinensische oder weiter gefasst, der Nahost-Konflikt. Aus diesem Grund nimmt dieses Thema einen besonderen Platz in der Bildungsarbeit der Rosa-Luxemburg- Stiftung im Inland wie im Ausland ein. Wenngleich dabei auch in der Stiftung und ihrem Umfeld die Meinungen auseinandergehen...

  9. Produkteinführung im Umfeld des Niedergangs: Die Blu-ray Disk

    OpenAIRE

    Oestreicher, Klaus; Walton, Nigel; Newnham, M.

    2014-01-01

    Dieses Kapitel diskutiert die Problematik existenzieller Bedrohung durch radikale Innovationen. Virtuelle Marktangebote verändern Märkte im Home Entertainment und das Konsumverhalten grund¬legend. Zunehmend gefährden dematerialisierte Produkte, welche zu Services werden und Folge der Information Communication Tech¬nologies (ICT) sind, die Lebensfähigkeit physischer Produkte. Deren Märkte sind im Niedergang und das bedroht nicht nur die Hersteller optischer Disks (CD und DVD), sondern beeinflu...

  10. Original models of NGN/IMS-networks surrounded by circuit-switched systems

    OpenAIRE

    Kulikov, Nikolay

    2014-01-01

    On obtaining of the Alexander Graham Bell a patent for invention of the telephone in 1987, the communication system consistently has gone through several evolutionary stages: from analog lines and manual switches to video telephony and IMS architecture. Each of the stages can be described by specific switching systems, data transmission systems and types of transmitted information. After implementation of such solution, it is possible to create a number of access nodes in the Operators IMS-ne...

  11. Method for Estimating Evaporative Potential (IM/CLO) from ASTM Standard Single Wind Velocity Measures

    Science.gov (United States)

    2016-08-10

    IM/CLO) FROM ASTM STANDARD SINGLE WIND VELOCITY MEASURES DISCLAIMER The opinions or assertions contained herein are the private views of the...USARIEM TECHNICAL REPORT T16-14 METHOD FOR ESTIMATING EVAPORATIVE POTENTIAL (IM/CLO) FROM ASTM STANDARD SINGLE WIND VELOCITY... ASTM STANDARD SINGLE WIND VELOCITY MEASURES Adam W. Potter Biophysics and Biomedical Modeling Division U.S. Army Research Institute of Environmental

  12. Pragmatic awareness of Suggestions: From (Im)Polite Mannerism to Attitudinal Appropriateness

    OpenAIRE

    Hamid Allami; Nasim Boustani

    2017-01-01

    The present research seeks to determine: (a) Iranian EFL learners’ application of suggestion semantic formulae ;(b) their attitude of appropriateness in terms of confidence in the employment of appropriate supportive moves; (c), their (im)polite mannerism with respect to the selected strategies; and (d) the relationship between attitude of appropriateness and mannerism of (im)politeness. An Oxford Quick placement Test (OQPT) was administered among 60 Iranian EFL learners to check their langua...

  13. Die nonverbale Kommunikation im Bundestagswahlkampf 2002:Gerhard Schröder versus Edmund Stoiber

    OpenAIRE

    Dieball, W. (Werner)

    2004-01-01

    Diese interdisziplinäre Dissertation aus dem Fachbereich Politikwissenschaften verfolgt vordergründig das Ziel, die Wirkungsweise der nonverbalen Kommunikation im Bundestagswahlkampf 2002 zu analysieren. Im Zentrum der empirisch-analytischen Untersuchung stehen Gerhard Schröder und Edmund Stoiber, die nach den nonverbalen Merkmalen: äußeres Erscheinungsbild, Mimik, Stimmklang, Gestik und Motorik untersucht werden. Das leitende Forschungsinteresse der Arbeit besteht darin, zu eruieren, inwiewe...

  14. Datengeleitetes Lernen im studienbegleitenden Deutschunterricht am Beispiel des KoGloss-Ansatzes

    OpenAIRE

    Dubova, Agnese; Proveja, Egita

    2016-01-01

    Der vorliegende Aufsatz stellt den sprachdidaktischen Ansatz KoGloss vor und beschreibt die Möglichkeiten seines Einsatzes im studienbegleitenden Deutschunterricht. Als eine der Formen des datengeleiteten Lernens ermöglicht der KoGloss-Ansatz eine forschungsorientierte und lernerzentrierte Herangehensweise, die insbesondere im akademischen Sprachunterricht gefragt ist. Eine korpusbasierte Erschließung von (Fach-)Wörtern und komplexen sprachlichen Mustern, das learning by doing, die Kooperatio...

  15. Robust stator resistance identification of an IM drive using model reference adaptive system

    International Nuclear Information System (INIS)

    Madadi Kojabadi, Hossein; Abarzadeh, Mostafa; Aghaei Farouji, Said

    2013-01-01

    Highlights: ► We estimate the stator resistance and rotor speed of the IM. ► We proposed a new quantity to estimate the speed and stator resistance of IM. ► The proposed algorithm is robust to rotor resistance variations. ► We estimate the IM speed and stator resistance simultaneously to avoid speed error. - Abstract: Model reference adaptive system (MRAS) based robust stator resistance estimator for sensorless induction motor (IM) drive is proposed. The MRAS is formed with a semi-active power quantity. The proposed identification method can be achieved with on-line tuning of the stator resistance with robustness against rotor resistance variations. Stable and efficient estimation of IM speed at low region will be guaranteed by simultaneous identification of IM speed and stator resistance. The stability of proposed stator resistance estimator is checked through Popov’s hyperstability theorem. Simulation and experimental results are given to highlight the feasibility, the simplicity, and the robustness of the proposed method.

  16. Respuestas faciales ante imágenes de advertencia de tabaco

    Directory of Open Access Journals (Sweden)

    M. A. Muñoz

    Full Text Available Resumen En 2003, la Comisión Europea propuso una serie de advertencias visuales para ser incluidas en los embalajes de tabaco, con el objetivo de motivar a los fumadores a dejar de fumar y promover actitudes negativas hacia el tabaco. El objetivo de este estudio fue evaluar el impacto de las advertencias sanitarias mediante autoinformes y medidas psicofisiológicas. Cincuenta sujetos sanos (19-23 años visionaron un conjunto de treinta y seis imágenes de diferente contenido emocional y veinticuatro del banco de imágenes preventivas propuestas por la Comisión Europea. Se registró la actividad eléctrica de los músculos cigomático mayor y corrugador mientras los sujetos visionaban estas imágenes. A continuación, los participantes evaluaban las imágenes en las dimensiones de agradabilidad y activación. Los resultados muestran una mayor actividad eléctrica del musculo corrugador ante la presentación de imágenes desagradables comparadas con advertencias desagradables incluidas en los paquetes de tabaco. Estos resultados sugieren que la campaña preventiva podría beneficiarse de imágenes preventivas más impactantes, promoviendo así la activación del sistema motivacional evitativo/defensivo.

  17. A critical analysis of Sorrell v. IMS Health, Inc.: Pandora's box at best.

    Science.gov (United States)

    Bibet-Kalinyak, Isabelle

    2012-01-01

    Sorrell v. IMS Health, Inc. ("IMS Health"), a remarkable health care case with resounding First Amendment and economic repercussions, features the clashing interests of the State of Vermont and aggressive free market players from the pharmaceutical and data mining industries in a constitutional battle over Free Speech. In 2007, Vermont enacted Act 80, The Confidentiality of Prescription Information Act, prohibiting the sale, disclosure, and use of pharmacy records. Together with two other data miners and PhRMA, an association of brand-name drug manufacturers, IMS Health successfully challenged the constitutionality of Act 80 on First Amendment grounds. This article examines the legal arguments of IMS Health and Act 80 and analyzes why IMS Health stands out for potentially challenging the traditional doctrine of commercial speech and the resulting legal implications. After reviewing the Supreme Court's reasoning, the article concludes that, although the Supreme Court reached the appropriate outcome, it did so by unjustifiably departing from the established legal doctrine of commercial speech and the American tradition of consumer protection. At best, IMS Health's reasoning opens a legal Pandora's Box potentially leading to an onset of new commercial speech challenges; at worst, it manufactured a Trojan Horse aimed at eroding the traditional regulatory safeguards that maintain a balance between the needs of consumers and corporations alike.

  18. Spontane Mobilisierung und der Wandel kollektiver Formationen im Internet. Eine Fallstudie zur PEGIDA-Bewegung

    Directory of Open Access Journals (Sweden)

    Sang-hui Nam

    2016-11-01

    Full Text Available Der vorliegende Beitrag beschäftigt sich mit der Frage, wie sich eine aus spontaner Mobilisierung entstandene soziale Bewegung als kollektive Formation im Internet entwickelt. Da spontane Bewegungen in aller Regel nur über eine schwache kollektive Identität verfügen, werden sie bislang überwiegend als Übergangsphänomen betrachtet. Viele Studien beschäftigten sich eher mit den Folgen spontaner Mobilisierung, insbesondere der Frage, wie daraus eine nachhaltige Bewegung entstehen kann. Die kollektive Formation selbst ist bis dato weitgehend eine Blackbox geblieben. In der vorliegenden Studie widme ich mich folgenden zentralen Forschungsfragen: 1. Wie werden kollektive Formationen aus spontanen ProtestteilnehmerInnen dargestellt und generiert? 2. Wie ändern sich diese im Verlauf der Mobilisierung? Im Mittelpunkt der empirischen Analyse stehen Online-Kommentare, die eine zunehmend wichtige Rolle für soziale Bewegungen und spontane Mobilisierungsprozesse spielen. Am Beispiel von PEGIDA wird die Konstruktion einer kollektiven Formation über Live-Kommentare zu Live-Übertragungen von PEGIDA-Demonstrationen sowie deren Wandel in drei Phasen untersucht. Im ersten Schritt werden die soziotechnischen Grundlagen kollektiven Handelns im Internet erläutert. Der zweite Schritt befasst sich mit der methodischen Vorgehensweise. Im dritten Schritt werden ausgewählte Textpassagen von Online-Kommentaren analysiert. Anschließend wird der Wandel kollektiver Formationen nachgezeichnet. URN: http://nbn-resolving.de/urn:nbn:de:0114-fqs170138

  19. Medida Interpessoal de Psicopatia (IM-P: estudo preliminar no contexto brasileiro Interpersonal Measure of Psychopathy (IM-P: preliminary study in the Brazilian context

    Directory of Open Access Journals (Sweden)

    Tárcia Rita Davoglio

    2011-01-01

    Full Text Available INTRODUÇÃO: A observação direta do comportamento interpessoal é um recurso importante na descrição e diagnóstico da personalidade psicopática. A Medida Interpessoal de Psicopatia (Interpersonal Measure of Psychopathy, IM-P é um instrumento psicométrico composto por 21 itens, desenvolvido para ser utilizado em associação com outras escalas de avaliação da psicopatia. Foca-se, especificamente, nos comportamentos interpessoais e aspectos não verbais evidentes na interação do entrevistador com indivíduos que apresentam características psicopáticas. OBJETIVO: Descrever resultados preliminares sobre a investigação de aspectos interpessoais da psicopatia mediante a utilização da IM-P, incluindo as etapas de tradução/adaptação e avaliação de confiabilidade interavaliadores da IM-P, em uma amostra de adolescentes brasileiros. MÉTODO: Trata-se de estudo transversal, descritivo e correlacional realizado com 20 adolescentes masculinos cumprindo medida socioeducativa com privação de liberdade na Região Metropolitana de Porto Alegre (RS. Após os procedimentos de tradução da escala, treinamento dos pesquisadores e teste piloto por meio de uma entrevista semiestruturada, a IM-P foi pontuada por três juízes independentes. RESULTADOS: Os resultados estatísticos, obtidos através do coeficiente de concordância de Kendall, revelaram grau de concordância interavaliadores elevado e satisfatório para os escores totais da IM-P (W = 0,84; p INTRODUCTION: The direct observation of interpersonal behaviors is an important resource in the description and diagnosis of the psychopathic personality. The Interpersonal Measure of Psychopathy (IM-P is a psychometric instrument comprised of 21 items, designed to be applied in association with other instruments that also evaluate psychopaths. It focuses specifically on interpersonal and non-verbal behaviors that become evident during the interaction between the interviewer and individuals

  20. Results from an Interval Management (IM) Flight Test and Its Potential Benefit to Air Traffic Management Operations

    Science.gov (United States)

    Baxley, Brian; Swieringa, Kurt; Berckefeldt, Rick; Boyle, Dan

    2017-01-01

    NASA's first Air Traffic Management Technology Demonstration (ATD-1) subproject successfully completed a 19-day flight test of an Interval Management (IM) avionics prototype. The prototype was built based on IM standards, integrated into two test aircraft, and then flown in real-world conditions to determine if the goals of improving aircraft efficiency and airport throughput during high-density arrival operations could be met. The ATD-1 concept of operation integrates advanced arrival scheduling, controller decision support tools, and the IM avionics to enable multiple time-based arrival streams into a high-density terminal airspace. IM contributes by calculating airspeeds that enable an aircraft to achieve a spacing interval behind the preceding aircraft. The IM avionics uses its data (route of flight, position, etc.) and Automatic Dependent Surveillance-Broadcast (ADS-B) state data from the Target aircraft to calculate this airspeed. The flight test demonstrated that the IM avionics prototype met the spacing accuracy design goal for three of the four IM operation types tested. The primary issue requiring attention for future IM work is the high rate of IM speed commands and speed reversals. In total, during this flight test, the IM avionics prototype showed significant promise in contributing to the goals of improving aircraft efficiency and airport throughput.

  1. Freie Lerninhalte im Internet mit Studierenden recherchieren, kommentieren und kompilieren. Zur Gestaltung der online-Selbstlernangebote im hr-Funkkolleg Philosophie

    Directory of Open Access Journals (Sweden)

    Jakob Krebs

    2017-03-01

    Full Text Available Wie lassen sich online frei verfügbare Bildungsinhalte mit Studierenden so zusammenstellen, dass sie als thematisch sortierte Selbstlernmaterialien unkompliziert gefunden werden können – sei es von anderen Studierenden, interessierten Laien oder auch von Lehrkräften in Bildungsinstitutionen? Der vorliegende Werkstattbericht rekonstruiert ein Lernszenario, in dem Studierende vorhandene Materialien im Internet recherchierten, kommentierten und kompilierten, um ein Online-Zusatzangebot zu den Radiosendungen im hr-Funkkolleg Philosophie 2014/15 zu erstellen. Die Rahmenbedingungen dieser ungewöhnlichen universitären Kooperation mit dem Rundfunk werden im ersten Abschnitt vorgestellt. Der zweite Abschnitt skizziert das didaktische Design zusammen mit dem Projektstrukturplan eines produktorientierten kollaborativen Lernsettings mit Wiki-Einsatz. Im dritten Abschnitt werden der Lernerfolg bei den Studierenden sowie einige Herausforderungen benannt, die u. a. in der Abschlussevaluierung zur Sprache kamen. Der vierte Abschnitt macht die Projekterfahrungen für reguläre Lehr- und Lern-Szenarien fruchtbar, in denen nicht nur Studierende mit didaktischen Interessen durch die gemeinsame Gestaltung von Internetangeboten fachlich und methodisch profitieren können. Mit dem Bericht wird somit u. a. veranschaulicht, wie sich Ansätze von Blended, Peer-Assisted und Service Learning produktiv kombinieren lassen.

  2. Was bedeutet Trägheit? Begriff und Wirkung der Trägheit im Rahmen des Wechselverhaltens von Konsumenten im Strommarkt

    NARCIS (Netherlands)

    Henseler, Jörg

    2006-01-01

    In Wissenschaft und Praxis wird die Trägheit der Konsumenten als Ursache der geringen Wechselrate im deutschen Strommarkt für Haushaltskunden diskutiert. Der vorliegende Beitrag arbeitet heraus, dass es sich bei dieser Argumentation entweder um eine Tautologie oder ein Synomym für den Verbleib in

  3. Der Tatort im studienbegleitenden Deutschunterricht ab B2. Potenziale für heterogene Studierendengruppen im nichtdeutschsprachigen Raum

    Directory of Open Access Journals (Sweden)

    Michael Seyfarth

    2016-04-01

    Full Text Available Aktuelle Diskussionen zum studienbegleitenden Deutschunterricht verdeutlichen die Notwendigkeit danach, sich bei curricularen Überlegungen sowohl an institutionellen Rahmenbedingungen als auch an spezifischen Bedürfnissen der Studierenden zu orientieren. Da Lehrwerke den damit einhergehenden Anforderungen nach Offenheit und Adaptierbarkeit nicht gerecht werden können, sind mittelfristig alternative Konzepte gefragt, die es ermöglichen, im Zuge curricularer Überlegungen die notwendige Kohärenz zwischen einzelnen Unterrichtseinheiten herzustellen und dennoch eine flexible Anpassung an konkrete Lernkontexte zu erlauben. Der vorliegende Beitrag stellt ein solches Konzept vor. Ausgehend von der Arbeit am Tatort werden drei Lernbereiche vorgestellt, die neben der Arbeit am Film auch die Arbeit an angrenzenden Themen und Texten sowie darauf aufbauend die Entwicklung studienbegleitender kommunikativer Handlungskompetenz vorsehen.  Current discussions on teaching German alongside the core subjects at university show the necessity to consider both institutional requirements and the students' individual goals when establishing teaching objectives. Existing text books, however, suffer from an overly tight structure that doesn’t allow the instructor to use additional material in order to focus on the specific needs of the students in a suitable way. Flexible concepts are needed which serve as a framework and which can be realized with texts and tasks focusing on what is required by a specific learning context. This paper presents such an approach, using the German feature film Tatort. Besides ideas for working with the audiovisual material we will present opportunities that come along with the various texts and discussions in media and social networks arising around the film as well as ways for combining these aspects with developing language skills for the academic context.

  4. CD31-Expression am Primärtumor und Nachweis hämatogen disseminierter Tumorzellen im Knochenmark von Brustkrebspatientinnen

    OpenAIRE

    Eisenmann, Petra

    2005-01-01

    Der Nachweis von disseminierten Tumorzellen im Knochenmark von Patientinnen mit primärem Mammakarzinom ist ein wichtiger prognostischer Parameter. In der vorliegenden Arbeit wurde der Nachweis von CD31 am Primärtumor Mammakarzinom mit dem Auftreten von Mikrometastasen im Knochenmark korreliert. Ferner wurde die prognostische Bedeutung von disseminierten Tumorzellen im Knochenmark und die prognostische Bedeutung von CD31 evaluiert. Bei 50 Patientinnen des Gesamtkollektivs von 195 (25,6%) wu...

  5. Associations between United States Medical Licensing Examination (USMLE) and Internal Medicine In-Training Examination (IM-ITE) scores.

    Science.gov (United States)

    McDonald, Furman S; Zeger, Scott L; Kolars, Joseph C

    2008-07-01

    Little is known about the associations of previous standardized examination scores with scores on subsequent standardized examinations used to assess medical knowledge in internal medicine residencies. To examine associations of previous standardized test scores on subsequent standardized test scores. Retrospective cohort study. One hundred ninety-five internal medicine residents. Bivariate associations of United States Medical Licensing Examination (USMLE) Steps and Internal Medicine In-Training Examination (IM-ITE) scores were determined. Random effects analysis adjusting for repeated administrations of the IM-ITE and other variables known or hypothesized to affect IM-ITE score allowed for discrimination of associations of individual USMLE Step scores on IM-ITE scores. In bivariate associations, USMLE scores explained 17% to 27% of the variance in IME-ITE scores, and previous IM-ITE scores explained 66% of the variance in subsequent IM-ITE scores. Regression coefficients (95% CI) for adjusted associations of each USMLE Step with IM-ITE scores were USMLE-1 0.19 (0.12, 0.27), USMLE-2 0.23 (0.17, 0.30), and USMLE-3 0.19 (0.09, 0.29). No single USMLE Step is more strongly associated with IM-ITE scores than the others. Because previous IM-ITE scores are strongly associated with subsequent IM-ITE scores, appropriate modeling, such as random effects methods, should be used to account for previous IM-ITE administrations in studies for which IM-ITE score is an outcome.

  6. Spannungsaktivierte Natriumkanäle im Corpus luteum des Primaten und ihre Rolle bei der Regulation von Steroidproduktion und Luteolyse

    OpenAIRE

    Bulling, Andreas

    2008-01-01

    Im Ovar des Menschen und im Corpus Luteum des Rhesusaffen konnte die mRNA für einen bislang nur im peripheren Nervensystem und in neuroendokrinen Zellen gefundenen spannungsaktivierten Natriumkanal (eNaK, SCN9A) nachgewiesen werden. In kultivierten humanen Granulosaluteinzellen wurden sowohl die Transkriptmenge, als auch die durch depolarisierende Spannungspulse ausgelösten, TTX-sensitiven transienten Ströme durch hCG negativ reguliert. Trotz des gleichzeitigen Vorkommens spannungsaktivierter...

  7. INSTANT MESSENGER (IM) APPLICATION USAGE AT WORKPLACE AND WORKING CULTURE OF A PUBLIC UNIVERSITY SUPPORTING STAFF IN KOTA KINABALU SABAH.

    OpenAIRE

    Nading, Dorina; Morshidi, Azizan

    2016-01-01

    Instant Messenger (IM) has becoming a new form of social relations tool in which people interact, dialogue, collaborate and exchange information. Many organizations and companies have adapted their management strategies with the utilization of IM applications, both internally or externally. The popularity of IM in local organizational management in such a way that government agencies, companies, universities, colleges and schools. The use of applications such as wechat, whatsApp messenger...

  8. Improved detection of Mycobacterium bovis infection in bovine lymph node tissue using immunomagnetic separation (IMS-based methods.

    Directory of Open Access Journals (Sweden)

    Linda D Stewart

    Full Text Available Immunomagnetic separation (IMS can selectively isolate and concentrate Mycobacterium bovis cells from lymph node tissue to facilitate subsequent detection by PCR (IMS-PCR or culture (IMS-MGIT. This study describes application of these novel IMS-based methods to test for M. bovis in a survey of 280 bovine lymph nodes (206 visibly lesioned (VL, 74 non-visibly lesioned (NVL collected at slaughter as part of the Northern Ireland bovine TB eradication programme. Their performance was evaluated relative to culture. Overall, 174 (62.1% lymph node samples tested positive by culture, 162 (57.8% by IMS-PCR (targeting IS6110, and 191 (68.2% by IMS-MGIT culture. Twelve (6.9% of the 174 culture positive lymph node samples were not detected by either of the IMS-based methods. However, an additional 79 M. bovis positive lymph node samples (27 (13.1% VL and 52 (70.3% NVL were detected by the IMS-based methods and not by culture. When low numbers of viable M. bovis are present in lymph nodes (e.g. in NVLs of skin test reactor cattle decontamination prior to culture may adversely affect viability, leading to false negative culture results. In contrast, IMS specifically captures whole M. bovis cells (live, dead or potentially dormant which are not subject to any deleterious treatment before detection by PCR or MGIT culture. During this study only 2.7% of NVL lymph nodes tested culture positive, whereas 70.3% of the same samples tested M. bovis positive by the IMS-based tests. Results clearly demonstrate that not only are the IMS-based methods more rapid but they have greater detection sensitivity than the culture approach currently used for the detection of M. bovis infection in cattle. Adoption of the IMS-based methods for lymph node testing would have the potential to improve M. bovis detection in clinical samples.

  9. Sequence-specific DNA alkylation by tandem Py-Im polyamide conjugates.

    Science.gov (United States)

    Taylor, Rhys Dylan; Kawamoto, Yusuke; Hashiya, Kaori; Bando, Toshikazu; Sugiyama, Hiroshi

    2014-09-01

    Tandem N-methylpyrrole-N-methylimidazole (Py-Im) polyamides with good sequence-specific DNA-alkylating activities have been designed and synthesized. Three alkylating tandem Py-Im polyamides with different linkers, which each contained the same moiety for the recognition of a 10 bp DNA sequence, were evaluated for their reactivity and selectivity by DNA alkylation, using high-resolution denaturing gel electrophoresis. All three conjugates displayed high reactivities for the target sequence. In particular, polyamide 1, which contained a β-alanine linker, displayed the most-selective sequence-specific alkylation towards the target 10 bp DNA sequence. The tandem Py-Im polyamide conjugates displayed greater sequence-specific DNA alkylation than conventional hairpin Py-Im polyamide conjugates (4 and 5). For further research, the design of tandem Py-Im polyamide conjugates could play an important role in targeting specific gene sequences. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  10. SISTEMAS MULTIMEDIA BASADOS EN PROTOCOLO IP IMS APLICADOS A SERVICIOS LTE DE 4G

    Directory of Open Access Journals (Sweden)

    Edgar Alfonso Cipagauta Pedraza

    2013-01-01

    Full Text Available Este artículo presenta de una manera sencilla, el sistema creado para soportar los servicios de multimedia dentro de red de nueva generación (NGN llamada IP Multimedia Subsystem (IMS a la vez que se explica su relación con la tecnología Long Term Evolution (LTE definida por el 3GPP en su release 8. IMS se trata de una arquitectura integrada en el núcleo de red para ofrecer servicios multimediales de audio y video sobre una infraestructura. Entonces ahora, los servicios prestados pasarán a ser ofrecidos a través de IP IMS y será la piedra angular en donde estos servicios se generarán y se ofrecerán. LTE es sin duda un impulsor de IMS, pero hay otros factores que empiezan a favorecer y a plantear un modelo de negocio favorable para la arquitectura multimedia. IMS está orientado a habilitar la convergencia de servicios, combinando el crecimiento de la Internet con el de las comunicaciones móviles, desde cualquier ubicación y método de forma continua y permanente.

  11. An IMS Station life cycle from a sustainment point of view

    Science.gov (United States)

    Brely, Natalie; Gautier, Jean-Pierre; Foster, Daniel

    2014-05-01

    The International Monitoring System (IMS) is to consist of 321 monitoring facilities, composed of four different technologies with a variety of designs and equipment types, deployed in a range of environments around the globe. The International Monitoring System is conceived to operate in perpetuity through maintenance, replacement and recapitalization of IMS facilities' infrastructure and equipment when the end of service life is reached [CTBT/PTS/INF.1163]. Life Cycle techniques and modellization are being used by the PTS to plan and forecast life cycle sustainment requirements of IMS facilities. Through historical data analysis, Engineering inputs and Feedback from experienced Station Operators, the PTS currently works towards increasing the level of confidence on these forecasts and sustainment requirements planning. Continued validation, feedback and improvement of source data from scientific community and experienced users is sought and essential in order to ensure limited effect on data availability and optimal costs (human and financial).

  12. Gas hydrates and permafrost in continental northern West Siberia; Gashydrate und Permafrost im kontinentalen noerdlichen Westsibirien

    Energy Technology Data Exchange (ETDEWEB)

    Cramer, B. [Bundesanstalt fuer Geowissenschaften und Rohstoffe, Hannover (Germany); Braun, A.; Poelchau, H.S. [Forschungszentrum Juelich (Germany). Inst. fuer Erdoel und Organische Geochemie; Littke, R. [RWTH Aachen (Germany). Lehrstuhl fuer Geologie, Geochemie und Lagerstaetten des Erdoels und der Kohle

    1997-12-31

    The largest natural gas pool in the world is located in northern part of the West Siberian Basin. During the Quaternary this reservoir became overlaid with several hundreds of metres of permafrost. The pressure and temperature conditions prevailing under this permafrost zone have led to the development of gas hydrates. As far as is known today there is no genetic relationship between the formation of the gas pool and the development of gas hydrates. The present contribution deals with these questions in detail. (MSK) [Deutsch] Im Nordteil des westsibirischen Beckens liegt die groesste Erdgaslagerstaette der Erde. Darueber hat sich im Quartaer ein mehrere hundert Meter maechtiger Permafrost gebildet. Die unter der Premafrostzone herrschenden Druck-und Temperaturbedingungen ermoeglichten die Bildung von Gashydraten. Nach heutigen Erkenntnisse besteht kein genetischer Zusammenhang zwischen Lagerstaettenbildung und Gashydraten. Im Folgenden werden Einzelheiten geschildert.

  13. Down-conversion IM-DD RF photonic link utilizing MQW MZ modulator.

    Science.gov (United States)

    Xu, Longtao; Jin, Shilei; Li, Yifei

    2016-04-18

    We present the first down-conversion intensity modulated-direct detection (IM-DD) RF photonic link that achieves frequency down-conversion using the nonlinear optical phase modulation inside a Mach-Zehnder (MZ) modulator. The nonlinear phase modulation is very sensitive and it can enable high RF-to-IF conversion efficiency. Furthermore, the link linearity is enhanced by canceling the nonlinear distortions from the nonlinear phase modulation and the MZ interferometer. Proof-of-concept measurement was performed. The down-conversion IM-DD link demonstrated 28dB improvement in distortion levels over that of a conventional IM-DD link using a LiNbO3 MZ modulator.

  14. Measuring cognitive change with ImPACT: the aggregate baseline approach.

    Science.gov (United States)

    Bruce, Jared M; Echemendia, Ruben J; Meeuwisse, Willem; Hutchison, Michael G; Aubry, Mark; Comper, Paul

    2017-11-01

    The Immediate Post-Concussion Assessment and Cognitive Test (ImPACT) is commonly used to assess baseline and post-injury cognition among athletes in North America. Despite this, several studies have questioned the reliability of ImPACT when given at intervals employed in clinical practice. Poor test-retest reliability reduces test sensitivity to cognitive decline, increasing the likelihood that concussed athletes will be returned to play prematurely. We recently showed that the reliability of ImPACT can be increased when using a new composite structure and the aggregate of two baselines to predict subsequent performance. The purpose of the present study was to confirm our previous findings and determine whether the addition of a third baseline would further increase the test-retest reliability of ImPACT. Data from 97 English speaking professional hockey players who had received at least 4 ImPACT baseline evaluations were extracted from a National Hockey League Concussion Program database. Linear regression was used to determine whether each of the first three testing sessions accounted for unique variance in the fourth testing session. Results confirmed that the aggregate baseline approach improves the psychometric properties of ImPACT, with most indices demonstrating adequate or better test-retest reliability for clinical use. The aggregate baseline approach provides a modest clinical benefit when recent baselines are available - and a more substantial benefit when compared to approaches that obtain baseline measures only once during the course of a multi-year playing career. Pending confirmation in diverse samples, neuropsychologists are encouraged to use the aggregate baseline approach to best quantify cognitive change following sports concussion.

  15. Miniature GC-Minicell Ion Mobility Spectrometer (IMS) for In Situ Measurements in Astrobiology Planetary Missions

    Science.gov (United States)

    Kojiro, Daniel R.; Stimac, Robert M.; Kaye, William J.; Holland, Paul M.; Takeuchi, Norishige

    2006-01-01

    Astrobiology flight experiments require highly sensitive instrumentation for in situ analysis of volatile chemical species and minerals present in the atmospheres and surfaces of planets, moons, and asteroids. The complex mixtures encountered place a heavy burden on the analytical instrumentation to detect and identify all species present. The use of land rovers and balloon aero-rovers place additional emphasis on miniaturization of the analytical instrumentation. In addition, smaller instruments, using tiny amounts of consumables, allow the use of more instrumentation and/or ionger mission life for stationary landers/laboratories. The miniCometary Ice and Dust Experiment (miniCIDEX), which combined Gas Chromatography (GC) with helium Ion Mobility Spectrometry (IMS), was capable of providing the wide range of analytical information required for Astrobiology missions. The IMS used here was based on the PCP model 111 IMS. A similar system, the Titan Ice and Dust Experiment (TIDE), was proposed as part of the Titan Orbiter Aerorover Mission (TOAM). Newer GC systems employing Micro Electro- Mechanical System (MEMS) based technology have greatly reduced both the size and resource requirements for space GCs. These smaller GCs, as well as the continuing miniaturization of Astrobiology analytical instruments in general, has highlighted the need for smaller, dry helium IMS systems. We describe here the development of a miniature, MEMS GC-IMS system (MEMS GC developed by Thorleaf Research Inc.), employing the MiniCell Ion Mobility Spectrometer (IMS), from Ion Applications Inc., developed through NASA's Astrobiology Science and Technology Instrument Development (ASTID) Program and NASA s Small Business Innovative Research (SBIR) Program.

  16. [Christofer Herrmann. Kloster und Burg - die architektur des Deutschens Ordens im Pressen und Livland. In : Glaube, Macht und Pracht. GeistlicheGemeinschaften des Ostseeraums im Zeitalter der Backsteingotik] / Dennis Hortmuth

    Index Scriptorium Estoniae

    Hortmuth, Dennis

    2011-01-01

    Arvustus: Christofer Herrmann. Kloster und Burg - die Architektur des Deutschen Ordens in Preussen und Livland. In : Glaube, Macht und Pracht. GeistlicheGemeinschaften des Ostseeraums im Zeitalter der Backsteingotik (=Archäologie und Geschichte im Ostseeraum; Archaeology and History of the Baltic 6) Rahden : Verlag Marie Leidorf, 2009. S. 209-219. Saksa Ordu arhitektuurist Preisi- ja Liivimaal

  17. Datamart use for complex data retrieval in an ArcIMS application

    Energy Technology Data Exchange (ETDEWEB)

    Scherma, S. (Steven); Bolivar, Stephen L.

    2004-01-01

    This paper describes the use of datamarts and data warehousing concepts to expedite retrieval and display of complex attribute data from multi-million record databases. Los Alamos National Laboratory has developed an Internet application (SMART) using ArcIMS that relies on datamarts to quickly retrieve attribute data, associated with, but not contained within GIS layers. The volume of data and the complex relationships within the transactional database made data display within ArcIMS impractical without the use of datamarts. The technical issues and solutions involved in the development are discussed.

  18. Application of Ion Mobility Spectrometry (IMS) in forensic chemistry and toxicology with focus on biological matrices

    Science.gov (United States)

    Bernhard, Werner; Keller, Thomas; Regenscheit, Priska

    1995-01-01

    The IMS (Ion Mobility Spectroscopy) instrument 'Ionscan' takes advantage of the fact that trace quantities of illicit drugs are adsorbed on dust particles on clothes, in cars and on other items of evidence. The dust particles are collected on a membrane filter by a special attachment on a vacuum cleaner. The sample is then directly inserted into the spectrometer and can be analyzed immediately. We show casework applications of a forensic chemistry and toxicology laboratory. One new application of IMS in forensic chemistry is the detection of psilocybin in dried mushrooms without any further sample preparation.

  19. Female teams im eSport: Re-Konstruktion der Kategorie Geschlecht

    OpenAIRE

    Streubel, Anett

    2010-01-01

    "Das Ziel dieses Papers ist es, die Herausbildung von "female Teams" im eSport zu untersuchen. Das Hauptaugenmerk liegt hierbei auf Rekonstruktionsmechanismen der Kategorie Geschlecht, welche durch Sprache und Diskurse gebildet, erlernt und fortgeführt werden. Der Anteil der Spielerinnen, die das Computerspielen als Sport betreiben, wächst stetig an - deshalb soll in dieser Studie der Profibereich des eSport näher betrachtet werden. In einem Tätigkeitsfeld, in dem nicht der Körper im Mittelpu...

  20. Die biene und ihre produkte in der kunst und im alltagsleben (Fruhchristliche und byzantinische Zeit

    Directory of Open Access Journals (Sweden)

    Liveri Angeliki

    2010-01-01

    Full Text Available Die vorliegende Arbeit ist in zwei Teile geteilt: den kunst- und kulturhistorischen Teil. Im ersten Teil werden Darstellungen uber Bienen Bienenzucht, Honig und Wachs seit der fruhchristlichen bis zur spatbyzantinischen Zeit vorgefuhrt. Daher ist es als Beitrag in der "Ikonographie" der Biene wahrend dieser Zeit zu verstehen. Im kulturhistorischen Teil werden Informationen uber die Bienenzucht, den Handel mit Honig und Wachs sowie ihre vielfaltige Anwendung von der byzantinischen Gesellschaft an Hand der primaren Quellen, des Standes der Forschung und der archaologischen Funden erwahnt. Damit ist erwunscht ein moglichst gutes Bild der byzantinischen Bienenzucht wieder zu geben und die Nutzung der Bienenprodukte in Byzanz anschaulich zu machen.

  1. Quad-Polarization Transmission for High-Capacity IM/DD Links

    DEFF Research Database (Denmark)

    Estaran Tolosa, Jose Manuel; Castaneda, Mario A. Usuga; Porto da Silva, Edson

    2014-01-01

    We report the first experimental demonstration of IM/DD links usi ng four states of polarization. Fiber - Induced polarization rotation is compensated with a simple tracking algorithm operating on the Stokes space. The principle is prove n at 128 Gb/s over 2 - km SSMF......We report the first experimental demonstration of IM/DD links usi ng four states of polarization. Fiber - Induced polarization rotation is compensated with a simple tracking algorithm operating on the Stokes space. The principle is prove n at 128 Gb/s over 2 - km SSMF...

  2. Power-efficient method for IM-DD optical transmission of multiple OFDM signals.

    Science.gov (United States)

    Effenberger, Frank; Liu, Xiang

    2015-05-18

    We propose a power-efficient method for transmitting multiple frequency-division multiplexed (FDM) orthogonal frequency-division multiplexing (OFDM) signals in intensity-modulation direct-detection (IM-DD) optical systems. This method is based on quadratic soft clipping in combination with odd-only channel mapping. We show, both analytically and experimentally, that the proposed approach is capable of improving the power efficiency by about 3 dB as compared to conventional FDM OFDM signals under practical bias conditions, making it a viable solution in applications such as optical fiber-wireless integrated systems where both IM-DD optical transmission and OFDM signaling are important.

  3. Reconstrucción Tridimensional de Imágenes Ecocardiográficas

    Directory of Open Access Journals (Sweden)

    Jan Ramírez

    2001-04-01

    Full Text Available

    Las imágenes ecocardiográficas convencionales permiten la evaluación
    anatómica y funcional del corazón; por ser bidimensionales son difíciles de interpretar sin un entrenamiento adecuado; los últimos desarrollos han estado orientados a la reconstrucción del corazón en 3 y 4 dimensiones directamente en el equipo de ultrasonido o usando programas especializados. El objetivo es un software en MATLAB™ para la reconstrucción 3D y 4D de imágenes ecocardiográficas.

     

     

  4. Design of data transportation based on dual-port RAM in IMS system

    International Nuclear Information System (INIS)

    Zhang Guohui; Li Yongping

    2010-01-01

    Ion mobility spectroscopy (IMS) is a rugged, portable, sensitive, low cost, field instrumental technique capable of trace organic detection and monitoring for environmental pollutants, pesticides, explosives, narcotics, and other analytes, hence it is of great significance to social security and stability. High rate data transmission mechanism between DSP processor and ARM core is required in the electronic system of IMS. After careful comparison of UART and dual port RAM, a new design based on dual port RAM that can be applied to other similar systems. (authors)

  5. Modelled and Observed Diurnal SST Signals: "SSTDV:R.EX.-IM.A.M." Project Preliminary Results

    DEFF Research Database (Denmark)

    Karagali, Ioanna; Høyer, Jacob; LeBorgne, Pierre

    2013-01-01

    This study presents some of the preliminary results from the ESA Support To Science Element (STSE) funded project on the Diurnal Variability of the Sea Surface Temperature, regarding its Regional Extend and Implications in Atmospheric Modelling (SSTDV:R.EX.–IM.A.M.). During this phase of the proj......This study presents some of the preliminary results from the ESA Support To Science Element (STSE) funded project on the Diurnal Variability of the Sea Surface Temperature, regarding its Regional Extend and Implications in Atmospheric Modelling (SSTDV:R.EX.–IM.A.M.). During this phase...

  6. Diagnostic evaluatuin of gastrointestinal tumors; Diagnostik bei Tumoren im Gastrointestinaltrakt

    Energy Technology Data Exchange (ETDEWEB)

    Linke, R.; Tatsch, K. [Ludwig-Maximilians-Univ. Muenchen (Germany). Klinik und Poliklinik fuer Nuklearmedizin

    1998-07-01

    neuere radiologische Verfahren auch den Nachweis von Laesionen <1 cm erlaubt. Die PET weist hier ebenfalls eine hohe Sensitivitaet auf, da sich bei einem gesteigerten Glukosemetabolismus auch sehr kleine Herde darstellen lassen. Das sensitivste Verfahren zum Nachweis von Pankreastumoren ist die Endosonographie. Die Frage der Dignitaet kann meist mit der ERCP geklaert werden, aber auch die PET hat hier ihren Stellenwert, insbesondere bei der schwierigen Differentialdiagnose zwischen chronischer Pankreatitis und dem Pankreaskarzinom. Zur OP-Planung ist die konventionelle radiologische Bildgebung unerlaesslich. Bei der Beurteilung der Resektabilitaet kommt es mit der CT oder MRT jedoch in bis zu 40% der Faelle zu Fehleinschaetzungen. Die PET hat auch hier eine wesentlich hoehere Sensitivitaet im Metastasennachweis. (orig.)

  7. Multiprofessionelle Ausbildung im Medizinstudium [Multiprofessional training in medical education

    Directory of Open Access Journals (Sweden)

    Stößel, Ulrich

    2006-05-01

    Full Text Available [english] The MESOP-project - Intredisciplinary cooperation in the health care system (Medicne, Social work, Nursery, which was funded by the ministery for science, research and arts of the Land Baden-Wuerttemberg for the years 1997-2000 aimed amongst others at the development and proving of new teaching and learning modules for health care and social professions. Based on an analysis of comparable former teaching efforts and giving some disambiguation for the terms interdisciplinarity and multiproessionality, this article describes a teaching project which was designed across the borders of the participating universities. Together students from medical faculty of the university of Freiburg (n=59 and students from the university of applied sciences for social work of Esslingen (n=61 took part in several weekend seminaries, which focussed the topic of interdisciplinary cooperation in the health care and social welfare system. The contribution describes the development of this teaching concept during several years of proving and the design of the evaluation process and instruments, which mainly was based on standardised questionnaires and an additional open discussion. The detailed report about the results of the evaluation and their interpretation do not allow to jump to conclusions concerning the transfer into regular teaching practice. But it gets obvious that students from both faculty claim for the integration of this topic into their education. Therefore it seems to be necessary to strengthen the knowledge about other health professionals and to give the possibility of practical exercises for cooperation [german] Das Projekt MESOP - Interdisziplinäre Kooperation im Gesundheitswesen (Medizin, Soziale Arbeit, Pflege, das vom Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg von 1997-2000 gefördert wurde, diente u.a. der Entwicklung und Erprobung neuer Lehr- und Lernformen für Gesundheits- und Sozialberufe. Anknüpfend an

  8. Sinnvolle Lebensführung im Spannungsfeld von Risiko und Sicherheit Die Ethik der Risikominimierung im Lichte von Kierkegaards und Nietzsches Kritik der Moderne

    Directory of Open Access Journals (Sweden)

    Hüsch Sebastian

    2016-07-01

    Full Text Available Der Beitrag betrachtet die für die Gegenwartsgesellschaft charakteristische Orientierung an Sicherheit und Risikovermeidung vor dem Hintergrund der Reflexionen Søren Kierkegaards und Friedrich Nietzsches bezüglich der Abgründigkeit der menschlichen Existenz. Die Untersuchung wirft die Frage auf, ob die Suche nach einem im alltäglichen Sinne verstandenen „guten Leben“ letzten Endes zu Lasten der Möglichkeiten einer als sinnhaft erlebten Existenz geht.

  9. 76 FR 79217 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2011-12-21

    ... Production Act of 1993--IMS Global Learning Consortium, Inc. Notice is hereby given that, on November 28....C. 4301 et seq. (``the Act''), IMS Global Learning Consortium, Inc. has filed written notifications..., have been added as parties to this venture. Also, Inclusive Design Research Center, Toronto, Ontario...

  10. 77 FR 54611 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2012-09-05

    ... Production Act of 1993--IMS Global Learning Consortium, Inc. Notice is hereby given that, on July 16, 2012... seq. (``the Act''), IMS Global Learning Consortium, Inc. has filed written notifications...; and Lightbox Education, Cheadle, UNITED KINGDOM, have withdrawn as parties to this venture. No other...

  11. 76 FR 34252 - Notice Pursuant to the National Cooperative Research and Production Act of 1993; IMS Global...

    Science.gov (United States)

    2011-06-13

    ... Production Act of 1993; IMS Global Learning Consortium, Inc. Notice is hereby given that, on May 9, 2011... seq. (``the Act''), IMS Global Learning Consortium, Inc. has filed written notifications... Education, Hamar, Norway, have been added as parties to this venture. Also, CTUnion, Seoul, Republic of...

  12. 75 FR 64694 - Approval for Expanded Manufacturing Authority; Foreign-Trade Subzone 33E; DNP IMS America...

    Science.gov (United States)

    2010-10-20

    ... Manufacturing Authority; Foreign-Trade Subzone 33E; DNP IMS America Corporation (Thermal Transfer Ribbon Printer..., grantee of FTZ 33, has requested an expansion of the scope of manufacturing authority on behalf of DNP IMS...-6636, 2/10/2010) and the application has been processed pursuant to the FTZ Act and the Board's...

  13. Season of infectious mononucleosis and risk of multiple sclerosis at different latitudes; the EnvIMS Study.

    Science.gov (United States)

    Lossius, Andreas; Riise, Trond; Pugliatti, Maura; Bjørnevik, Kjetil; Casetta, Ilaria; Drulovic, Jelena; Granieri, Enrico; Kampman, Margitta T; Landtblom, Anne-Marie; Lauer, Klaus; Magalhaes, Sandra; Myhr, Kjell-Morten; Pekmezovic, Tatjana; Wesnes, Kristin; Wolfson, Christina; Holmøy, Trygve

    2014-05-01

    Seasonal fluctuations in solar radiation and vitamin D levels could modulate the immune response against Epstein-Barr virus (EBV) infection and influence the subsequent risk of multiple sclerosis (MS). Altogether 1660 MS patients and 3050 controls from Norway and Italy participating in the multinational case-control study of Environmental Factors In Multiple Sclerosis (EnvIMS) reported season of past infectious mononucleosis (IM). IM was generally reported more frequently in Norway (p=0.002), but was associated with MS to a similar degree in Norway (odds ratio (OR) 2.12, 95% confidence interval (CI) 1.64-2.73) and Italy (OR 1.72, 95% CI 1.17-2.52). For all participants, there was a higher reported frequency of IM during spring compared to fall (p<0.0005). Stratified by season of IM, the ORs for MS were 1.58 in spring (95% CI 1.08-2.31), 2.26 in summer (95% CI 1.46-3.51), 2.86 in fall (95% CI 1.69-4.85) and 2.30 in winter (95% CI 1.45-3.66). IM is associated with MS independently of season, and the association is not stronger for IM during spring, when vitamin D levels reach nadir. The distribution of IM may point towards a correlation with solar radiation or other factors with a similar latitudinal and seasonal variation.

  14. 76 FR 18797 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2011-04-05

    ... Production Act of 1993--IMS Global Learning Consortium, Inc. Notice is hereby given that, on March 3, 2011... seq. (``the Act''), IMS Global Learning Consortium, Inc. has filed written notifications... Centre for ICT in Education, Hamar, NORWAY, has been added as a party to this venture. Also, Horizon...

  15. 77 FR 34069 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2012-06-08

    ... Production Act of 1993--IMS Global Learning Consortium, Inc. Notice is hereby given that, on May 2, 2012... seq. (``the Act''), IMS Global Learning Consortium, Inc. has filed written notifications... Education has changed its name to Ellucian, Malvern, PA. No other changes have been made in either the...

  16. 77 FR 12881 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2012-03-02

    ... Production Act of 1993--IMS Global Learning Consortium, Inc. Notice is hereby given that, on February 6, 2012... seq. (``the Act''), IMS Global Learning Consortium, Inc. has filed written notifications..., Plano, TX; Keller ISD, Keller, TX; Maryland State Department of Education, Baltimore, MD; Measured...

  17. 75 FR 51114 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2010-08-18

    ... Production Act of 1993--IMS Global Learning Consortium, Inc. Notice is hereby given that, on July 13, 2010... seq. (``the Act''), IMS Global Learning Consortium, Inc. has filed written notifications...; New York City Department of Education, New York, NY; and Ucompass.com , Inc., Tallahassee, FL, have...

  18. MIP-based enhanced mid-session macro-mobility for IMS-controlled state-full applications

    DEFF Research Database (Denmark)

    Renier, Thibault Julien; Fathi, Hanane; Schwefel, Hans-Peter

    2007-01-01

    , e.g., block unauthorized visiting users. The 3GPP IP Multimedia Subsystem (IMS) is a platform standardized towards network-independent access and session control. The current IMS specifications do not allow for any change of the user's current IP address during an ongoing session, which prevents...

  19. Development of a plug-type IMS-MS instrument and its applications in resolving problems existing in in-situ detection of illicit drugs and explosives by IMS.

    Science.gov (United States)

    Du, Zhenxia; Sun, Tangqiang; Zhao, Jianan; Wang, Di; Zhang, Zhongxia; Yu, Wenlian

    2018-07-01

    Ion mobility spectrometry (IMS) which acts as a rapid analysis technique is widely used in the field detection of illicit drugs and explosives. Due to limited separation abilities of the pint-sized IMS challenges and problems still exist regarding high false positive and false negative responses due to the interference of the matrix. In addition, the gas-phase ion chemistry and special phenomena in the IMS spectra, such one substance showing two peaks, were not identified unambiguously. In order to explain or resolve these questions, in this paper, an ion mobility spectrometry was coupled to a mass spectrometry (IMS-MS). A commercial IMS is embedded in a custom-built ion chamber shell was attached to the mass spectrometer. The faraday plate of IMS was fabricated with a hole for the ions to passing through to the mass spectrometer. The ion transmission efficiency of IMS-MS was optimized by optimizing the various parameters, especially the distance between the faraday plate and the cone of mass spectrum. This design keeps the integrity of the two original instruments and the mass spectrometry still works with multimode ionization source (i.e., IMS-MS, ESI-MS, APCI-MS modes). The illicit drugs and explosive samples were analyzed by the IMS-MS with 63 Ni source. The results showed that the IMS-MS is of high sensitivity. The ionization mechanism of the illicit drug and explosive samples with 63 Ni source were systematically studied. In addition, the interferent which interfered the detection of cocaine was identified as dibutyl phthalate (DBP) by this platform. The reason why the acetone solution of amphetamine showed two peaks was explained. Copyright © 2018 Elsevier B.V. All rights reserved.

  20. Images and society (or Images, Society and its Decoding Las imágenes y la sociedad (o las imágenes, la sociedad y su desciframiento

    Directory of Open Access Journals (Sweden)

    Juan Soto Ramírez

    2012-11-01

    Full Text Available

    Common sense, the thinking of the people par excellence, asserts that: a picture is worth a thousand words. This is a big mistake. The images are not carriers of meanings. The images always go through three basic processes are: production, circulation and reception. These processes are always determined in the time and social space. They are always the result of multiple relationships (social, ideological, political, moral, religious, etc., established with them. Always there are so many elements beyond the image, which determines its meaning. The meaning of an image always depends on the relationships established with it in a historical time and space, socially and culturally determined. The images are never alone. To decrypt their meanings, you must first know the symbolic life of the societies in which they appear. Images do not have a single meaning because it depends on the historical and cultural geography which presents. The images always have a close relationship with the society they were born. The Muhammad cartoons not offend everyone equally.


    El sentido común, que es el pensamiento de las colectividades por excelencia, afirma que: una imagen dice más que mil palabras. Lo cual es un grave error. Las imágenes no son portadoras de significados. Las imágenes siempre atraviesan por tres procesos básicos que son: su producción, su circulación y su recepción. Estos procesos siempre están determinados en el tiempo y en el espacio sociales. Su significado siempre es el resultado de múltiples relaciones (sociales, ideológicas, políticas, morales, religiosas, etc., que se establecen con las mismas. Es decir, siempre existen elementos que están más allá de la imagen, que determinan su significado. La manera en cómo se significa una imagen, siempre depende de las relaciones que se establecen con ella en un tiempo histórico y en un espacio, social y culturalmente determinado. Las imágenes nunca están solas. Para

  1. The Aries Program with emphasis on the International Magnetospherics Studies /IMS/-Porcupine Project

    Science.gov (United States)

    Honecker, H. J.

    1976-01-01

    This paper will discuss the present state of the development of the Aries Sounding Rocket System with particular emphasis on the configuration and subsystems required to support the IMS Program. A brief history of the development program will be presented. The results of the first five flights, three successes and two failures, will be presented and the observed performance compared to theoretical performance.

  2. Strukturelle Methoden zur durchgängigen Diagnose digitaler Automobil-Elektronik im Feld

    OpenAIRE

    Cook, Alejandro

    2014-01-01

    Die Fahrzeugtechnik nutzt die aktuellen Entwicklungen der Halbleiterindustrie, um Kunden eine enorme Anzahl ansprechender, komplexer Produkteigenschaften zu bieten. Da traditionelle, funktionale Testverfahren nicht mehr ausreichen, um den diagnostischen Anforderungen im Automobilbereich gerecht zu werden, wird die Analyse von Halbleiterdefekten zu einem wichtigen Aspekt der Qualitätssicherung. Strukturelle Testverfahren stellen bereits eine Schlüsseltechnologie für die erfolgreiche Herstel...

  3. Report of the Results of an IMS LEarning Design Expert Workshop

    NARCIS (Netherlands)

    Neumann, Susanne; Klebl, Michael; Griffiths, David; Hernández-Leo, Davinia; De la Fuente-Valentin, Luis; Hummel, Hans; Brouns, Francis; Derntl, Michael; Oberhuemer, Petra

    2009-01-01

    Neumann, S., Klebl, M., Griffiths, D., Hernández-Leo, D., de la Fuente Valentín, L., Hummel, H., Brouns, F., Derntl, M., & Oberhuemer, P. (2010). Report of the Results of an IMS Learning Design Expert Workshop. International Journal Of Emerging Technologies In Learning (IJET), 5(1), pp.

  4. Low-SNR Capacity of Parallel IM-DD Optical Wireless Channels

    KAUST Repository

    Chaaban, Anas; Rezki, Zouheir; Alouini, Mohamed-Slim

    2016-01-01

    The capacity of parallel intensity-modulation and direct-detection (IM-DD) optical wireless channels with total average intensity and per-channel peak intensity constraints is studied. The optimal intensity allocation at low signal-to-noise ratio

  5. A Chinese translation of IMS Learning Design Best Practice and Implementation Guide (draft)

    NARCIS (Netherlands)

    Gong, Yufeng

    2006-01-01

    Many Chinese researchers, system developers and e-learning practitioners have difficulties to understand IMS LD correctly because of language barriers. The main aim of this translation is to help chinese people to overcome the difficulties. It is also expected that this translation can launch into a

  6. Die Alpen als "Berg von Leichen und Schmerz" - Erinnerung und Dialog im literarischen Raum Elfriede Jelineks

    DEFF Research Database (Denmark)

    Ortner, Jessica

    2014-01-01

    “ Räumlichkeit im Sinne Gérard Genettes, die „bedeutete“ Landschaft der Alpen zu einer Gedächtnisarchitektur umbildet. In ihren Texten stellt Jelinek zwei grundsätzlich verschiedene Semantisierungen der Alpen in ein dialogisches Verhältnis (Bachtin): Die Semantisierung der Alpen als Touristenparadies und...

  7. imDEV: a graphical user interface to R multivariate analysis tools in Microsoft Excel

    Science.gov (United States)

    Interactive modules for data exploration and visualization (imDEV) is a Microsoft Excel spreadsheet embedded application providing an integrated environment for the analysis of omics data sets with a user-friendly interface. Individual modules were designed to provide toolsets to enable interactive ...

  8. Adaptive e-learning methods and IMS Learning Design. An integrated approach

    NARCIS (Netherlands)

    Burgos, Daniel; Specht, Marcus

    2006-01-01

    Please, cite this publication as: Burgos, D., & Specht, M. (2006). Adaptive e-learning methods and IMS Learning Design. In Kinshuk, R. Koper, P. Kommers, P. Kirschner, D. G. Sampson & W. Didderen (Eds.), Proceedings of the 6th IEEE International Conference on Advanced Learning Technologies (pp.

  9. How IMS Enables Converged Services for Cable and 3G Technologies: A Survey

    Directory of Open Access Journals (Sweden)

    Mani Mehdi

    2008-01-01

    Full Text Available The IP multimedia subsystem (IMS is a service control overlay standardized by the 3GPP. The IMS is based on session initiation protocol (SIP to establish, modify, and terminate the sessions. It provides a clean separation between services, signaling, and media with the potential to enable control and management of services over multiple transport technologies. In the scope of fixed-mobile convergence, this paper is dedicated to presenting a review of how cable networks can be integrated into IMS technology to achieve 3G-cable horizontal convergence. Cable networks, as one of the major fixed broadband access technologies with PacketCable architecture, are able to provide broadband internet access and VoIP in addition to cable TV. In this article, we review the evolution in PacketCable architecture to take up IMS. In this way, we consider the standardization and research activities to address this integration. We review some important challenges such as SIP protocol compatibility, defining unique user profile, required enhancement in authentication process, QoS and charging system.

  10. Multimedia adaptation with SIP resource availability signalling in IMS-networks

    NARCIS (Netherlands)

    Ozcelebi, T.; Radovanovic, I.

    2007-01-01

    Unlicensed, nondedicated and nondeterministic computer access networks are included in IP multimedia subsystem (IMS) in addition to the operator core network, which arises new end-to-end quality-of-service (QoS) issues for multimedia streaming. The resource availability of the network and the

  11. Facilitating mobile service provisioning in IP Multimedia Subsystem (IMS) using service oriented architecture

    NARCIS (Netherlands)

    Radovanovic, I.; Ray, A.; Lukkien, J.J.; Chaudron, M.R.V.; Krämer, B.J.; Lin, K.J.; Narasimhan, P.

    2007-01-01

    This paper presents an extension of the IMS software architecture using a service orientation, which provides flexibility of mobile service provisioning. The suggested extension facilitates composition of new mobile services in run-time based on the existing services and enables the end users to

  12. How IMS Enables Converged Services for Cable and 3G Technologies: A Survey

    Directory of Open Access Journals (Sweden)

    Noël Crespi

    2008-04-01

    Full Text Available The IP multimedia subsystem (IMS is a service control overlay standardized by the 3GPP. The IMS is based on session initiation protocol (SIP to establish, modify, and terminate the sessions. It provides a clean separation between services, signaling, and media with the potential to enable control and management of services over multiple transport technologies. In the scope of fixed-mobile convergence, this paper is dedicated to presenting a review of how cable networks can be integrated into IMS technology to achieve 3G-cable horizontal convergence. Cable networks, as one of the major fixed broadband access technologies with PacketCable architecture, are able to provide broadband internet access and VoIP in addition to cable TV. In this article, we review the evolution in PacketCable architecture to take up IMS. In this way, we consider the standardization and research activities to address this integration. We review some important challenges such as SIP protocol compatibility, defining unique user profile, required enhancement in authentication process, QoS and charging system.

  13. Mluvené slovo J. V. Šimáka

    Czech Academy of Sciences Publication Activity Database

    Kábová, Hana

    2011-01-01

    Roč. 28, č. 0 (2011), s. 63-74 ISSN 1211-8184 Institutional support: RVO:67985921 Keywords : Šimák, Josef Vítězslav * Czech historiography * popularisation of scientific knowledge Subject RIV: AB - History

  14. Sanktionen im Ukraine-Konflikt: Ein Ringen mit vielschichtigen Realitäten

    DEFF Research Database (Denmark)

    Jaeger, Mark Daniel

    2014-01-01

    Sanktionen als Instrument der Außenpolitik sind besonders bedroht von Pauschalisierungen. Politik und Öffentlichkeit verlangen oftmals nach klaren Antworten und eindeutigen Vorhersagen – auch im Zuge ihres jüngst zunehmenden Einsatzes in der Ukraine-Krise. Überzogenen Hoffnungen, Sanktionen mögen...

  15. What's the frequency, Kenneth? – Eine (queerfeministische Kritik an Sexismen und Rassismen im Schlagwortkatalog

    Directory of Open Access Journals (Sweden)

    Sandra Sparber

    2016-09-01

    Full Text Available Sprachliche Diskriminierungen bilden sich auf verschiedenen Ebenen im Schlagwortkatalog ab. In unterschiedlichen Ausprägungen finden wir sie sowohl in den Normdaten als auch in der Schlagwortfolge. Ziel des Aufsatzes ist es, die bibliothekarische Inhaltserschließung als soziale Praxis in einen theoretischen Bezugsrahmen einzubetten, um sie einer fundierten Kritik zugänglich zu machen.

  16. Representation of Coordination Mechanisms in IMS Learning Design to Support Group-based Learning

    NARCIS (Netherlands)

    Miao, Yongwu; Burgos, Daniel; Griffiths, David; Koper, Rob

    2007-01-01

    Miao, Y., Burgos, D., Griffiths, D., & Koper, R. (2008). Representation of Coordination Mechanisms in IMS Learning Design to Support Group-based Learning. In L. Lockyer, S. Bennet, S. Agostinho & B. Harper (Eds.), Handbook of Research on Learning Design and Learning Objects: Issues, Applications and

  17. A scalable addressing method when using IMS as a service bus infrastructure

    NARCIS (Netherlands)

    Stokking, H.M.; Hartog, F.T.H. den; Walraven, F.A.

    2009-01-01

    The dynamic provisioning of SIP addresses is a challenge when many devices and services are dynamically attached to an IMS network. Manual provisioning is too labor intensive for a telecommunications operator, and it is difficult to do it in a way that allows those devices and services access to all

  18. Towards personalized TV for concurrent use; unlocking the potential of IMS-based IPTV

    NARCIS (Netherlands)

    Brandenburg, R. van; Deventer, M.O. van; Karagiannis, G.; Schenk, M.

    2009-01-01

    Television (TV) is getting more personal. It went from a passive broadcast medium without any form of personalization or user identification, to subscription TV, interactive TV and now to IPTV, featuring an integrated return channel. IMS-based IPTV is a good example of a personalised IPTV

  19. Towards Personalized TV for Concurrent Use: Unlocking the Potential of IMS-Based IPTV

    NARCIS (Netherlands)

    van Brandenburg, Ray; van Deventer, M. Oskar; Karagiannis, Georgios; Schenk, Mike

    2009-01-01

    Television (TV) is getting more personal. It went from a passive broadcast medium without any form of personalization or user identification, to subscription TV, interactive TV and now to IPTV, featuring an integrated return channel. IMS-based IPTV is a good example of a personalised IPTV

  20. 40 CFR 51.352 - Basic I/M performance standard.

    Science.gov (United States)

    2010-07-01

    ... following model I/M program inputs and local characteristics, such as vehicle mix and local fuel controls... current version of the EPA mobile source emission model, and shall meet the minimum performance standard... specified in 40 CFR part 85, subpart W. (8) Emission control device inspections. None. (9) Stringency. A 20...

  1. I'm a Guy. How Can I Talk to My Female Doctor about Certain Things?

    Science.gov (United States)

    ... Español I'm a Guy. How Can I Talk to My Female Doctor About Certain Things? KidsHealth / ... site. Note: All information on TeensHealth® is for educational purposes only. For specific medical advice, diagnoses, and ...

  2. The implementation of the Plan Esperanza and response to the imPACT Review.

    Science.gov (United States)

    Vidaurre, Tatiana; Santos, Carlos; Gómez, Henry; Sarria, Gustavo; Amorin, Edgar; López, Marga; Regalado, Roxana; Manrique, Javier; Tarco, Duniska; Ayestas, Carlos; Calderón, Mónica; Mas, Luis; Neciosup, Silvia; Salazar, Miriam; Chávez, Juan Carlos; Ubillus, Milward; Limache, Abel; Ubillus, José Carlos; Navarro, Jeannie; Sarwal, Kavita; Sutcliffe, Simon; Gutiérrez-Aguado, Alfonso; Silva, Marianela; Mena, Amalia; Guillén, María Eugenia; Castañeda, Carlos; Abugattas, Julio

    2017-10-01

    Following the implementation of the National Cancer Prevention and Control Results-based Budget Programme (PpR Cancer-024) in 2011, the Peruvian Government approved the Plan Esperanza-a population-based national cancer control plan-in 2012. Legislation that ensured full government-supported funding for people who were otherwise unable to access or afford care and treatment accompanied the Plan. In 2013, the Ministry of Health requested an integrated mission of the Programme of Action for Cancer Therapy (imPACT) report to strengthen cancer control in Peru. The imPACT Review, which was executed in 2014, assessed Peru's achievements in cancer control, and areas for improvement, including cancer control planning, further development of population-based cancer registration, increased prevention, early diagnosis, treatment and palliative care, and the engagement and participation of civil society in the health-care system. This Series paper gives a brief history of the development of the Plan Esperanza, describes the innovative funding model that supports it, and summarises how funds are disseminated on the basis of disease, geography, and demographics. An overview of the imPACT Review, and the government's response in the context of the Plan Esperanza, is provided. The development and execution of the Plan Esperanza and the execution of and response to the imPACT Review demonstrates the Peruvian Government's commitment to fighting cancer across the country, including in remote and urban areas. Copyright © 2017 Elsevier Ltd. All rights reserved.

  3. A Service Oriented Web Application for Learner Knowledge Representation, Management and Sharing Conforming to IMS LIP

    Science.gov (United States)

    Lazarinis, Fotis

    2014-01-01

    iLM is a Web based application for representation, management and sharing of IMS LIP conformant user profiles. The tool is developed using a service oriented architecture with emphasis on the easy data sharing. Data elicitation from user profiles is based on the utilization of XQuery scripts and sharing with other applications is achieved through…

  4. Alexander Kratochvil. Aufbruch und Rückkehr: Ukrainische und tschechische Prosa im Zeichen der Postmoderne.

    Directory of Open Access Journals (Sweden)

    Marko Pavlyshyn

    2015-01-01

    Full Text Available Alexander Kratochvil. Aufbruch und Rückkehr: Ukrainische und tschechische Prosa im Zeichen der Postmoderne. [Venturing Forth and Coming Back: Ukrainian and Czech Prose in the Context of Postmodernity.] Berlin: Kulturverlag Kadmos, 2013. 311 pp. Bibliography. Index. Paper.

  5. IMPACT OF REALIZED IMS SYSTEM IN PRODUCTION AND DISTRIBUTION OF WATER ON QUALITY OF LIFE

    Directory of Open Access Journals (Sweden)

    Gordana Todorović

    2017-03-01

    Full Text Available In this paper from the assessments: the satisfaction of the citizens with the services PUC "Waterworks and Sewerage" and the total time interruption in water supply, appreciating their importance, we carried out the assessment of the implemented IMS PUC "Waterworks and Sewerage" in Kragujevac.

  6. End-to-End Availability Analysis of IMS-Based Networks

    DEFF Research Database (Denmark)

    Kamyod, Chayapol; Nielsen, Rasmus Hjorth; Prasad, Neeli R.

    2013-01-01

    Generation Networks (NGNs). In this paper, an end-to-end availability model is proposed and evaluated using a combination of Reliability Block Diagrams (RBD) and a proposed five-state Markov model. The overall availability for intra- and inter domain communication in IMS is analyzed, and the state...

  7. Engineering and development projects for the sustainment and enhancement of the IMS infrasound network

    Science.gov (United States)

    Marty, J.; Martysevich, P.; Kramer, A.; Haralabus, G.

    2012-04-01

    The Provisional Technical Secretariat (PTS) of the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) has a continuous interest in enhancing its capability in infrasound source localization and characterization. This capability is based on the processing of data recorded by the infrasound network of the International Monitoring System (IMS). This infrasound network consists of sixty stations, among which forty-five are already certified and continuously transmit data to the International Data Center (IDC) in Vienna, Austria. Each infrasound station is composed of an array of infrasound sensors capable of measuring micro-pressure changes produced at ground level by infrasonic waves. It is the responsibility of the Engineering and Development Section of the IMS Division to ensure the highest quality for IMS infrasound data. This includes the design of robust and reliable infrasound stations, the use of accurate and calibrated infrasound measuring chains, the installation of efficient wind noise reduction systems and the implementation of quality-control tools. The purpose of this paper is to present ongoing PTS infrasound engineering and development projects related to the testing and validation of wind noise reduction system models, the implementation of infrasound data QC tools, the definition of guidelines for the design of IMS power supply systems and the development of a portable infrasound calibrator and of field kits for site survey and certification.

  8. I'm Sorry "About That": Apologies, Indexicals, and (Unnamed) Offenses

    Science.gov (United States)

    Margutti, Piera; Traverso, Véronique; Pugliese, Rosa

    2016-01-01

    We investigate an apology format, "I'm sorry about it/that," where indexical terms (pronouns) refer to the offense rather than naming it. We identified two subsets in our collection of indexical apologies. In one, indexicals are subsequent either to the offense formulation or to an apology-relevant event; in the second, indexicals are…

  9. "I'm Sorry + Naming the Offense": A Format for Apologizing

    Science.gov (United States)

    Cirillo, Letizia; Colón de Carvajal, Isabel; Ticca, Anna Claudia

    2016-01-01

    The present article focuses on "I'm sorry + naming the offense"-formatted apologies occurring in phone calls in English. Apologies of this kind "emerge" and are oriented to as relevant actions when addressing an apologizable that is not the main business in ongoing talk. The sequential analysis of apologies and responses to…

  10. Gefährlicher Trend : Smartphone im Strassenverkehr : auch zu Fuss ist das Ablenkungspotenzial sehr gross.

    NARCIS (Netherlands)

    2016-01-01

    Viele Menschen, die sich zu Fuß im Straßenverkehr bewegen, nutzen dabei das Smartphone. Dies ist das Ergebnis einer Erhebung von DEKRA in sechs europäischen Hauptstädten. Von den rund 14.000 erfassten Personen nutzten fast 17 Prozent ihr Handy — für Textnachrichten, zum Telefonieren oder Musikhören.

  11. 300 Gb/s IM/DD based SDM-WDM-PON with laserless ONUs

    DEFF Research Database (Denmark)

    Bao, Fangdi; Morioka, Toshio; Oxenløwe, Leif Katsuo

    2018-01-01

    A low-cost, high-speed SDM-WDM-PON architecture is proposed by using a multi-core fiber (MCF) and intensity modulation/directly detection (IM/DD). One of the MCF cores is used for sending laser sources from optical line terminal (OLT) to optical network unit (ONU), thus facilitating laserless...

  12. The (Im)Materiality of Literacy: The Significance of Subjectivity to New Literacies Research

    Science.gov (United States)

    Burnett, Cathy; Merchant, Guy; Pahl, Kate; Rowsell, Jennifer

    2014-01-01

    This article deconstructs the online and offline experience to show its complexities and idiosyncratic nature. It proposes a theoretical framework designed to conceptualise aspects of meaning-making across on- and offline contexts. In arguing for the "(im)materiality" of literacy, it makes four propositions which highlight the complex…

  13. Investigating Perfect Timesharing: The Relationship between IM-Compatible Tasks and Dual-Task Performance

    Science.gov (United States)

    Halvorson, Kimberly M.; Ebner, Herschel; Hazeltine, Eliot

    2013-01-01

    Why are dual-task costs reduced with ideomotor (IM) compatible tasks (Greenwald & Shulman, 1973; Lien, Proctor & Allen, 2002)? In the present experiments, we first examine three different measures of single-task performance (pure single-task blocks, mixed blocks, and long stimulus onset asynchrony [SOA] trials in dual-task blocks) and two…

  14. W8...b4 IM, how did u rite??! Digital Writing in the Composition Classroom

    Science.gov (United States)

    Partridge, Bryan

    2011-01-01

    From word processing computers, to mobile telephones, to the advent of the Internet, and finally to online communication venues like Instant Messenger (IM), the past four decades have brought an increasing prevalence of technology into our culture that is altering the English language. While decried by parents and lamented by teachers, these…

  15. Aplicativo Web para la Fusión de Imágenes Satelitales

    Directory of Open Access Journals (Sweden)

    Javier Medina

    2013-06-01

    Full Text Available En este artículo se implementa un servicio en la Web que ofrece la posibilidad de realizar la fusión de imágenes de satélite. A lo largo del artículo tres temáticas importantes son abordadas. La primera temática corresponde al servicio Web, éste servicio es implementado usando software libre, donde el usuario puede realizar una solicitud del servicio de fusión. La segunda temática se ocupa del análisis de la transformada rápida de Wavelet haar (TRWH. La última temática detalla la metodología, para realizar la fusión de imágenes usando la TRWH. Con el fin de determinar la eficiencia de la TRWH, cinco Wavelets diferentes fueron implementadas para fusionar el mismo par de imágenes satelitales. Las imágenes resultantes fueron evaluadas tanto en la calidad espacial como espectral a través de cuatro índices. Los mejores resultados de la evaluación fueron obtenidos con la TRWH la cual preserva la riqueza espectral y mejora su calidad espacial

  16. A. S. G O. C ullmann , Der Staat im Neuen Testament. J. C . B. Mohr ...

    African Journals Online (AJOL)

    Test

    Dit is nietemin nie die eerste maal dat Cullmann oor die onderwerp skryf nie. Vroeër het daar reeds van hom verskyn, Konigsherrschaft. Christ und Kirche im Neuen Testament, en effens later, Die ersten christliche. Qlaubensbekenntnisse en betreklik onlangs, Christus und die Zeit. In al hierdie werke raak hy fasette van die ...

  17. The Role Of Teachers In Editing And Authoring Units Of Learning Using IMS Learning Design

    NARCIS (Netherlands)

    Griffiths, David; Blat, Josep

    2006-01-01

    The UNFOLD project, funded by the European Commission, runs a Community of Practice for Teachers and Learning Providers that has examined the way in which teachers can work with the IMS Learning Design Specification. The results of this work are presented. Relevant aspects of the specification are

  18. CopperCore: a service based approach towards implementing the IMS Learning Design specification.

    NARCIS (Netherlands)

    Vogten, Hubert

    2006-01-01

    This paper presents a service developed by the Open University of the Netherlands, called CopperCore which implements an IMS Learning Design engine as service. The overall architecture is described including a detailed description of the web service application programming interfaces.

  19. An overview of CTBT verification technologies and status of IMS networks

    International Nuclear Information System (INIS)

    Basham, P.

    2002-01-01

    The CTBT history is described in brief. Nuclear test environments and verification regime are presented with illustrations. Geographical location of seismic, hydroacoustic, infrasound and radionuclide monitoring networks are indicated on globe maps. Benefits of the International Monitoring System (IMS) to host countries are listed

  20. Federal Workforce: Attrition Rates at Ex-Im Bank and Similar Agencies

    National Research Council Canada - National Science Library

    Hess, James

    1997-01-01

    The Ex-Im Bank's mission is to assist U.S. exporters by offering a wide range of financing at terms competitive with those of other governments' export financing agencies and absorbing risks that the private sector is reluctant to cover...

  1. Analisa Karakteristik Teori Antrian pada Jaringan IP Multimedia Subsystem (IMS Menggunakan OPNET Modeler 14.5

    Directory of Open Access Journals (Sweden)

    Eko Fajar Cahyadi

    2015-05-01

    Full Text Available Perkembangan teknologi telekomunikasi yang semakin pesat, membuat para operator dan vendor telekomunikasi harus dapat menyediakan layanan telekomunikasi yang aman, cepat, dan multi guna, untuk mendorong terciptanya ekosistem layanan telekomunikasi yang beragam bagi para penggunanya. Next Generation Network (NGN merupakan sebuah teknologi masa depan yang mendukung beberapa layanan terintegrasi seperti voice, data, dan multimedia. Hal utama dari konsep NGN adalah konvergensi dan layanan yang berbasis IP sehingga diperlukan sebuah teknologi yang dikenal dengan IP Multimedia Subsystem (IMS. Agar pengiriman data dalam layanan IMS menjadi lebih efektif dan efisien maka diperlukan sebuah teori antrian yang tepat untuk digunakan sebagai pengatur aliran paket data. Penelitian ini melakukan pengamatan terhadap beberapa layanan pada jaringan IMS dengan menggunakan tiga teori antrian yang berbeda yaitu First In First Out (FIFO, Priority Queuing (PQ, dan Weighted-Fair Queuing (WFQ. Pengamatan dilakukan terhadap layanan Video Conference dan VoIP. Dari hasil simulasi dapat diketahui bahwa teori antrian WFQ pada layanan video conference menghasilkan rata-rata delay sebesar 9.22 ms , delay variation sebesar 0.036 ms dan packet loss sebesar 0.88%. Sedangkan untuk layanan VoIP menghasilkan rata-rata delay sebesar 144 ms, delay variation sebesar 0.021 ms, dan packet loss sebesar 0.05% serta menghasilkan rata-rata throughput sebesar 7.052 Mbps, sehingga teori antrian yang tepat digunakan dalam jaringan IMS dalam penelitian ini adalah WFQ.

  2. Design of an online charging system to support IMS-based inter-domain composite services

    NARCIS (Netherlands)

    Le, V.M.; Huitema, G.B.; Rumph, F.J.; Nieuwenhuis, Lambertus Johannes Maria; van Beijnum, Bernhard J.F.; Pfeifer, T.; Bellavista, P.

    2009-01-01

    For service providers online charging of composite services is necessary in order to manage financial risks of service delivery in multi-domain environments. At service level, inter-domain composite services consist of one or more service components, e.g. access service, IMS communication service or

  3. Automation of PCXMC and ImPACT for NASA Astronaut Medical Imaging Dose and Risk Tracking

    Science.gov (United States)

    Bahadori, Amir; Picco, Charles; Flores-McLaughlin, John; Shavers, Mark; Semones, Edward

    2011-01-01

    To automate astronaut organ and effective dose calculations from occupational X-ray and computed tomography (CT) examinations incorporating PCXMC and ImPACT tools and to estimate the associated lifetime cancer risk per the National Council on Radiation Protection & Measurements (NCRP) using MATLAB(R). Methods: NASA follows guidance from the NCRP on its operational radiation safety program for astronauts. NCRP Report 142 recommends that astronauts be informed of the cancer risks from reported exposures to ionizing radiation from medical imaging. MATLAB(R) code was written to retrieve exam parameters for medical imaging procedures from a NASA database, calculate associated dose and risk, and return results to the database, using the Microsoft .NET Framework. This code interfaces with the PCXMC executable and emulates the ImPACT Excel spreadsheet to calculate organ doses from X-rays and CTs, respectively, eliminating the need to utilize the PCXMC graphical user interface (except for a few special cases) and the ImPACT spreadsheet. Results: Using MATLAB(R) code to interface with PCXMC and replicate ImPACT dose calculation allowed for rapid evaluation of multiple medical imaging exams. The user inputs the exam parameter data into the database and runs the code. Based on the imaging modality and input parameters, the organ doses are calculated. Output files are created for record, and organ doses, effective dose, and cancer risks associated with each exam are written to the database. Annual and post-flight exposure reports, which are used by the flight surgeon to brief the astronaut, are generated from the database. Conclusions: Automating PCXMC and ImPACT for evaluation of NASA astronaut medical imaging radiation procedures allowed for a traceable and rapid method for tracking projected cancer risks associated with over 12,000 exposures. This code will be used to evaluate future medical radiation exposures, and can easily be modified to accommodate changes to the risk

  4. Die emotionale Dimension während der Sprechproduktion im Fremdsprachenlernprozess

    Directory of Open Access Journals (Sweden)

    Bahar İŞİGÜZEL

    2017-12-01

    Full Text Available Die Gefühle bzw. Emotionen der Lernenden beim Fremdsprachenlehr- und Lernprozess spielen eine wichtige Rolle. Mit der Verknüpfung der Emotion und Kognition beim Lernprozess, haben die positiven Gefühle eine große Bedeutung für den Lernerfolg. Als eine produktive Fertigkeit hat das Sprechen eine wesentlich intensive Beziehung mit den Emotionen, weil es in der realen Zeit fließend laufen muss. Der Lernende soll bei der Sprechproduktion spontan die richtigen Wörter auf die richtige Art und Weise anwenden und sie auch noch verständlich aussprechen. Leider erreicht die Sprechfertigkeit meistens eine niedrigere Niveaustufe als die anderen drei (Schreiben, Lesen und Hören Fertigkeiten im Fremdsprachenunterrichtprozess. Diese qualitative Untersuchung konzentriert sich auf die Daten (Tonaufnahme, die anhand eines Interviews während einer Sprechproduktionsübung im universitären Fremdsprachenunterricht gesammelt wurden. Um die emotionale Dimension der Lernenden während der Sprechproduktion zu identifizieren, wurden im Einzelinterview die Frage „Wie fühlst du dich während du eine Fremdsprache (Englisch sprichst?“ gestellt. Die Teilnehmer dieser Untersuchung waren 29 Studenten, die im WS 2016 - 2017 an Universität Nevşehir Hacı Bektaş Veli (Türkei immatrikuliert waren. Die Auswertung des Interviews folgte mit einer Transkription und einer Interpretation der Tonaufnahmen. Die Meinungen zu der emotionalen Dimension während der Sprechproduktion der Studenten wurden kategorisiert. Die Resultate dieser qualitativen Untersuchung zeigen, dass die emotionale Dimension der Lernenden im universitären Kontext sich in drei Kategorien (positiv, negativ und frühere Ausbildung verteilen.

  5. Detection capability of the IMS seismic network based on ambient seismic noise measurements

    Science.gov (United States)

    Gaebler, Peter J.; Ceranna, Lars

    2016-04-01

    All nuclear explosions - on the Earth's surface, underground, underwater or in the atmosphere - are banned by the Comprehensive Nuclear-Test-Ban Treaty (CTBT). As part of this treaty, a verification regime was put into place to detect, locate and characterize nuclear explosion testings at any time, by anyone and everywhere on the Earth. The International Monitoring System (IMS) plays a key role in the verification regime of the CTBT. Out of the different monitoring techniques used in the IMS, the seismic waveform approach is the most effective technology for monitoring nuclear underground testing and to identify and characterize potential nuclear events. This study introduces a method of seismic threshold monitoring to assess an upper magnitude limit of a potential seismic event in a certain given geographical region. The method is based on ambient seismic background noise measurements at the individual IMS seismic stations as well as on global distance correction terms for body wave magnitudes, which are calculated using the seismic reflectivity method. From our investigations we conclude that a global detection threshold of around mb 4.0 can be achieved using only stations from the primary seismic network, a clear latitudinal dependence for the detection threshold can be observed between northern and southern hemisphere. Including the seismic stations being part of the auxiliary seismic IMS network results in a slight improvement of global detection capability. However, including wave arrivals from distances greater than 120 degrees, mainly PKP-wave arrivals, leads to a significant improvement in average global detection capability. In special this leads to an improvement of the detection threshold on the southern hemisphere. We further investigate the dependence of the detection capability on spatial (latitude and longitude) and temporal (time) parameters, as well as on parameters such as source type and percentage of operational IMS stations.

  6. A plan for location calibration of IMS stations and near Kazakhstan

    International Nuclear Information System (INIS)

    Richards, P.G.; Kim, W.-Yo.; Khalturin, V.I.

    2001-01-01

    For purposes of monitoring compliance with the Comprehensive Nuclear Test-Ban Treaty, it is desirable to be able to locate seismic events routinely to within an uncertainty not greater than 1000 square km. From more than five years of experience with publication of the Reviewed Event Bulletin (REB) by the Prototype International Data Centre (PIDC), resulting in estimated locations for more than 100,000 seismic events, it is apparent that improved location accuracy is needed in order to reduce uncertainties below 1000 square km. In this paper, we outline a three-year program of applied research which commenced in March 2000 and which has the goal of achieving improved REB locations based upon data to be contributed to the International Data Centre from 30 IMS stations in Eastern Asia. Our first efforts will focus on the four IMS seismographic stations in Kazakhstan (AKT, BRV, KUR, MAK), together with IMS stations ZAL in Russia and AAK in Kyrgyzstan. Following the recommendations of two 'IMS Location Calibration Workshops' held in Oslo, Norway, in 1999 and 2000, our approach is to generate station-specific travel times for each observable seismic phase, as a function of distance and azimuth (and depth, where possible). Such travel times are obtained on the basis of (i) early studies based mainly on earthquake data (e.g. Nersesov and Rautian, 1964), (ii) Deep Seismic Sounding, and (iii) recent studies of nuclear and chemical explosions. We are also using (iv) an empirical approach in which phases are picked at IMS stations, for so-called Ground Truth events whose location is known quite accurately on the basis of additional data, obtained for example from local and regional networks. (author)

  7. An intermediate-mass black hole in the darf galaxy Pox 52

    Science.gov (United States)

    Barth, Aaron

    2005-01-01

    Do dwarf elliptical and dwarf spiral galaxies contain central black holes with masses below 106 solar masses? Beyond the Local Group dynamical searches for black holes in this mass range are very difficult but the detection of accretion-powered nuclear activity could be used to infer the presence of a black hole. The nearby dwarf spiral galaxy NGC 4395 hosts a faint Seyfert 1 nucleus with a likely black hole mass in the range 104-105 solar masses and for more than a decade it has been the only known example of a Seyfert 1 nucleus in a dwarf galaxy. I will present new Keck spectra of the dwarf galaxy POX 52 which demonstrate that it has a Seyfert 1 spectrum nearly identical to that of NGC 4395. Its velocity dispersion is 37 km/s suggesting a possible black hole mass of order 105 solar masses. I will discuss the prospects for systematic searches for nuclear activity in dwarf galaxies and the implications for black hole demographics.

  8. POX 52: A Dwarf Seyfert 1 Galaxy with an Intermediate-Mass Black Hole

    Science.gov (United States)

    Barth, Aaron J.; Ho, Luis C.; Rutledge, Robert E.; Sargent, Wallace L. W.

    2004-05-01

    We describe new optical images and spectra of POX 52, a dwarf galaxy with an active nucleus that was originally detected in the POX objective-prism survey. While POX 52 was originally thought to be a Seyfert 2 galaxy, the new data reveal an emission-line spectrum very similar to that of the dwarf Seyfert 1 galaxy NGC 4395, with broad components to the permitted line profiles, and we classify POX 52 as a Seyfert 1 galaxy. The host galaxy appears to be a dwarf elliptical, and its brightness profile is best fit by a Sérsic model with an index of 3.6+/-0.2 and a total magnitude of MV=-17.6. Applying mass-luminosity-line width scaling relations to estimate the black hole mass from the broad Hβ line width and nonstellar continuum luminosity, we find MBH~1.6×105Msolar. The stellar velocity dispersion in the host galaxy, measured from the Ca II λ8498, 8542 lines, is 36+/-5 km s-1, also suggestive of a black hole mass of order 105Msolar. Further searches for active nuclei in dwarf galaxies can provide unique constraints on the demographics of black holes in the mass range below 106Msolar.

  9. An Intermediate-Mass Black Hole in the Dwarf Galaxy Pox 52

    Science.gov (United States)

    Barth, Aaron

    Do dwarf elliptical and dwarf spiral galaxies contain central black holes with masses below 106 solar masses? Beyond the Local Group dynamical searches for black holes in this mass range are very difficult but the detection of accretion-powered nuclear activity could be used to infer the presence of a black hole. The nearby dwarf spiral galaxy NGC 4395 hosts a faint Seyfert 1 nucleus with a likely black hole mass in the range 104-105 solar masses and for more than a decade it has been the only known example of a Seyfert 1 nucleus in a dwarf galaxy. I will present new Keck spectra of the dwarf galaxy POX 52 which demonstrate that it has a Seyfert 1 spectrum nearly identical to that of NGC 4395. Its velocity dispersion is 37 km/s suggesting a possible black hole mass of order 105 solar masses. I will discuss the prospects for systematic searches for nuclear activity in dwarf galaxies and the implications for black hole demographics.

  10. An Intermediate-Mass Black Hole in the Dwarf Seyfert 1 Galaxy POX 52

    Science.gov (United States)

    Barth, A.; Ho, L.; Sargent, W.

    2004-06-01

    We describe new observations of POX 52, a previously known but nearly forgotten example of a dwarf galaxy with an active nucleus. While POX 52 was originally thought to be a Seyfert 2 galaxy, the new data reveal an emission-line spectrum very similar to that of the dwarf Seyfert 1 galaxy NGC 4395, with clear broad components to the permitted line profiles. The host galaxy appears to be a dwarf elliptical; this is the only known case of a Seyfert nucleus in a galaxy of this type. Applying scaling relations to estimate the black hole mass from the broad Hβ linewidth and continuum luminosity, we find MBH ≈ 1.6×105 M⊙. The stellar velocity dispersion in the host galaxy is 36 km s-1, also suggestive of a black hole mass of order 105 M⊙. Further searches for AGNs in dwarf galaxies can provide crucial constraints on the demographics of black holes in the mass range below 106 M⊙.

  11. A Multiwavelength Study of POX 52, a Dwarf Seyfert Galaxy with an Intermediate Mass Black Hole

    Science.gov (United States)

    Barth, Aaron

    2004-09-01

    POX 52 is a Seyfert 1 galaxy with unprecedented properties: its host galaxy is a dwarf elliptical, and its stellar velocity dispersion is only 36 km/s. The stellar velocity dispersion and the broad emission-line widths both suggest a black hole mass of order 10^5 solar masses. We request HST ACS/HRC imaging to perform a definitive measurement of the host galaxy structure; STIS UV and optical spectroscopy to study the nonstellar continuum and the structure of the broad-line region; and Chandra ACIS imaging to investigate the spectral and variability properties of the X-ray emission. The results of this program will give a detailed understanding of the host galaxy and accretion properties of one of the very few known black holes in the mass range around 10^5 solar masses.

  12. Search for intermediate mass black hole binaries in the first observing run of Advanced LIGO

    NARCIS (Netherlands)

    Abbott, B. P.; Abbott, R.; Abbott, T. D.; Acernese, F.; Ackley, K.; Adams, C.; Phythian-Adams, A.T.; Addesso, P.; Adhikari, R. X.; Adya, V. B.; Affeldt, C.; Afrough, M.; Agarwal, B.; Agatsuma, K.; Aggarwal, N.T.; Aguiar, O. D.; Aiello, L.; Ain, A.; Allen, B.; Allen, G; Allocca, A.; Almoubayyed, H.; Altin, P. A.; Amato, A.; Ananyeva, A.; Anderson, S. B.; Anderson, W. G.; Antier, S.; Appert, S.; Arai, K.; Araya, M. C.; Areeda, J. S.; Arnaud, N.; Arun, K. G.; Ascenzi, S.; Ashton, G.; Ast, M.; Aston, S. M.; Astone, P.; Aufmuth, P.; Aulbert, C.; AultONeal, K.; Avila-Alvarez, A.; Babak, S.; Bacon, P.; Bader, M. K. M.; Bae, S.; Baker, P. T.; Baldaccini, F.; Ballardin, G.; Ballmer, S. W.; Banagiri, S.; Barayoga, J. C.; Barclay, S. E.; Barish, B. C.; Barker, R.D.; Barone, F.; Barr, B.; Barsotti, L.; Barsuglia, M.; Barta, D.; Bartlett, J.; Bartos, I.; Bassiri, R.; Basti, A.; Batch, J. C.; Baune, C.; Bawaj, M.; Bazzan, M.; Becsy, B.; Beer, C.; Bejger, M.; Belahcene, I.; Bell, A. S.; Berger, B. K.; Bergmann, G.; Bell, A. S.; Berger, B. K.; Bergmann, G.; Berry, C. P. L.; Bersanetti, D.; Bertolini, A.; Betzwieser, J.; Bhagwat, S.; Bhandare, R.; Bilenko, I. A.; Billingsley, G.; Billman, C. R.; Birch, D J; Birney, R.; Birnholtz, O.; Biscans, S.; Bisht, A.; Bitossi, M.; Biwer, C.; Bizouard, M. A.; Blackburn, J. K.; Blackman, J.; Blair, C. D.; Blair, D. G.; Blair, R. M.; Bloemen, S.; Bock, O.; Bode, N.; Boer, M.; Bogaert, J.G.; Bohe, A.; Bondu, F.; Bonnand, R.; Boom, B. A.; Bork, R.; Boschi, V.; Bose, S.; Bouffanais, Y.; Bozzi, A.; Bradaschia, C.; Brady, P. R.; Braginsky, V. B.; Branchesi, M.; Brau, J. E.; Briant, T.; Brillet, A.; Brinkmann, M.; Brisson, V.; Brockill, P.; Broida, J. E.; Brooks, A. F.; Brown, A.D.; Brown, D.; Brown, N. M.; Brunett, S.; Buchanan, C. C.; Buikema, A.; Bulik, T.; Bulten, H. J.; Buonanno, A.; Buskulic, D.; Buy, C.; Byer, R. L.; Cabero, M.; Cadonati, L.; Cagnoli, G.; Cahillane, C.; Bustillo, J. Calderon; Callister, T. A.; Calloni, E.; Camp, J. B.; Canepa, M.; Canizares, P.; Cannon, K. C.; Cao, H.; Cao, J.; Capano, C. D.; Capocasa, E.; Carbognani, F.; Caride, S.; Carney, M. F.; Diaz, J. Casanueva; Casentini, C.; Caudill, S.; Cavaglia, M.; Cavalier, F.; Cavalieri, R.; Cella, G.; Cepeda, C. B.; Baiardi, L. Cerboni; Cerretani, G.; Cesarini, E.; Chamberlin, S. J.; Chan, M.; Chao, D. S.; Charlton, P.; Chassande-Mottin, E.; Chatterjee, D.; Cheeseboro, B. D.; Chen, H. Y.; Chen, Y; Cheng, H. -P.; Chincarini, A.; Chiummo, A.; Chmiel, T.; Cho, H. S.; Cho, M.; Chow, J. H.; Christensen, N.; Chu, Q.; Chua, A. J. K.; Chua, S. S. Y.; Chung, A. K. W.; Chung, S.; Ciani, G.; Ciolfi, R.; Cirelli, C. E.; Cirone, A.; Clara, F.; Clark, J. A.; Cleva, F.; Cocchieri, C.; Coccia, E.; Cohadon, P. -F.; Colla, A.; Collette, C. G.; Cominsky, L. R.; Constancio, M., Jr.; Conti, L.; Cooper, S. J.; Corban, P.; Corbitt, T. R.; Corley, K. R.; Cornish, N.; Corsi, A.; Cortese, S.; Costa, C. A.; Coughlin, M. W.; Coughlin, S. B.; Coulon, J. -P.; Countryman, S. T.; Couvares, P.; Covas, P. B.; Cowan, E. E.; Coward, D. M.; Cowart, M. J.; Coyne, D. C.; Coyne, R.; Creighton, J. D. E.; Creighton, T. D.; Cripe, J.; Crowder, S. G.; Cullen, T. J.; Cumming, A.; Cunningham, Laura; Cuoco, E.; Dal Canton, T.; Danilishin, S. L.; D'Antonio, S.; Danzmann, K.; Dasgupta, A.; Costa, C. F. Da Silva; Dattilo, V.; Dave, I.; Davier, M.; Davies, G. S.; Davis, D.; Daw, E. J.; Day, B.; De, S.; Debra, D.; Deelman, E; Degallaix, J.; De laurentis, M.; Deleglise, S.; Del Pozzo, W.; Denker, T.; Dent, T.; Dergachev, V.A.; Rosa, R.; DeRosa, R. T.; DeSalvo, R.; Devenson, J.; Devine, R. C.; Dhurandhar, S.; Diaz, M. C.; Di Fiore, L.; Giovanni, M. Di; Di Girolamo, T.; Di Lieto, A.; Di Pace, S.; Di Palma, I.; Di Renzo, F.; Doctor, Z.; Dolique, V.; Donovan, F.; Dooley, K. L.; Doravari, S.; Dorrington, I.; Douglas, R.; Alvarez, M. Dovale; Downes, T. P.; Drago, M.; Drever, R. W. P.; Driggers, J. C.; Du, Z.; Ducrot, M.; Duncan, J.; Dwyer, S. E.; Edo, T. B.; Edwards, M. C.; Effler, A.; Eggenstein, H. -B.; Ehrens, P.; Eichholz, J.; Eikenberry, S. S.; Eisenstein, R. A.; Essick, R. C.; Etienne, Z. B.; Etzel, T.; Evans, M.; Evans, T. M.; Factourovich, M.; Fafone, V.; Fair, H.; Fairhurst, S.; Fan, X.; Farinon, S.; Farr, B.; Farr, W. M.; Fauchon-Jones, E. J.; Favata, M.; Fays, M.; Fehrmann, H.; Feicht, J.; Fejer, M. M.; Fernandez-Galiana, A.; Ferrante, I.; Ferreira, E. C.; Ferrini, F.; Fidecaro, F.; Fiori, I.; Fiorucci, D.; Fisher, R. P.; Flaminio, R.; Fletcher, M; Fong, H.; Forsyth, P. W. F.; Forsyth, S. S.; Fournier, J. -D.; Frasca, S.; Frasconi, F.; Frei, Z.; Freise, A.; Frey, R.; Frey, V.; Fries, E. M.; Fritschel, P.; Frolov, V. V.; Fulda, P.; Fyffe, M.; Gabbard, H.; Gabel, M.; Gadre, B. U.; Gaebel, S. M.; Gair, J. R.; Gammaitoni, L.; Ganija, M. R.; Gaonkar, S. G.; Garufi, F.; Gaudio, S.; Gaur, G.; Gayathri, V.; Gehrels, N.; Gemme, G.; Genin, E.; Gennai, A.; George, D.J.; George, J.; Gergely, L.; Germain, V.; Ghonge, S.; Ghosh, Abhirup; Ghosh, Archisman; Ghosh, S.; Giaime, J. A.; Giardina, K. D.; Giazotto, A.; Gill, K.P.; Glover, L.; Goetz, E.; Goetz, R.; Gomes, A.S.P.; Gonzalez, Idelmis G.; Castro, J. M. Gonzalez; Gopakumar, A.; Gorodetsky, M. L.; Gossan, S. E.; Lee-Gosselin, M.; Gouaty, R.; Grado, A.; Graef, C.; Granata, M.; Grant, A.; Gras, S.; Gray, C.M.; Greco, G.; Green, A. C.; Groot, P.; Grote, H.; Grunewald, S.; Gruning, P.; Guidi, G. M.; Guo, X.; Gupta, A.; Gupta, M. K.; Gushwa, K. E.; Gustafson, E. K.; Gustafson, R.; Hall, B. R.; Hall, E. D.; Hammond, G.; Haney, M.; Hanke, M. M.; Hanks, J.; Hanna, C.; Hannam, M. D.; Hannuksela, O. A.; Hanson, J.; Hardwick, T.; Harms, J.; Harry, G. M.; Harry, I. W.; Hart, M. J.; Haster, C. -J.; Haughian, K.; Healy, J.; Heidmann, A.; Heintze, M. C.; Heitmann, H.; Hello, P.; Hemming, G.; Hendry, M.; Heng, I. S.; Hennig, J.; Henry, J.A.; Heptonstall, A. W.; Heurs, M.; Hild, S.; Hoak, D.; Hofman, D.; Holt, K.; Holz, D. E.; Hopkins, P.; Horst, C.; Hough, J.; Houston, E. A.; Howell, E. J.; Hu, Y. M.; Huerta, E. A.; Huet, D.; Hughey, B.; Husa, S.; Huttner, S. H.; Huynh-Dinh, T.; Indik, N.; Ingram, D. R.; Inta, R.; Intini, G.; Isa, H. N.; Isac, J. -M.; Isi, M.; Iyer, B. R.; Izumi, K.; Jacqmin, T.; Jani, K.; Jaranowski, P.; Jawahar, S.; Jimenez-Forteza, F.; Johnson, W.; Jones, I.D.; Jones, R.; Jonker, R. J. G.; Ju, L.; Junker, J.; Kalaghatgi, C. V.; Kalogera, V.; Kandhasamy, S.; Kang, G.; Kanner, J. B.; Karki, S.; Karvinen, K. S.; Kasprzack, M.; Katolik, M.; Katsavounidis, E.; Katzman, W.; Kaufer, S.; Kawabe, K.; Kefelian, F.; Keitel, D.; Kemball, A. J.; Kennedy, R.E.; Kent, C.; Key, J. S.; Khalili, F. Y.; Khan, I.; Khan., S.; Khan, Z.; Khazanov, E. A.; Kijbunchoo, N.; Kim, Chunglee; Kim, J. C.; Kim, W.; Kim, S.W.; Kim, Y.M.; Kimbrell, S. J.; King, E. J.; King, P. J.; Kirchhoff, R.; Kissel, J. S.; Kleybolte, L.; Klimenko, S.; Koch, P.; Koehlenbeck, S. M.; Koley, S.; Kondrashov, V.; Kontos, A.; Korobko, M.; Korth, W. Z.; Kowalska, I.; Kozak, D. B.; Kraemer, H.C.; Kringel, V.; Krishnan, B.; Krolak, A.; Kuehn, G.; Kumar, P.; Kumar, R.; Kumar, S.; Kuo, L.; Kutynia, A.; Kwang-Cheol, S.; Lackey, B. D.; Lai, K. H.; Landry, M.; Lang, R. N.; Lange, J.; Lantz, B.; Lanza, R. K.; Lartaux-Vollard, A.; Lasky, P. D.; Laxen, M.; Lazzarini, A.; Lazzaro, C.; Leaci, P.; Leavey, S.; Lee, C.H.; Lee, K.H.; Lee, M.H.; Lee, W. H.; Lee, K.; Lehmann, J.; Lenon, A.; Leonardi, M.; Leroy, N.; Letendre, N.; Levin, Y.; Li, T. G. F.; Libson, A.; Littenberg, T. B.; Liu, J.; Lockerbie, N. A.; London, L. T.; Lord, J. E.; Lorenzini, M.; Loriette, V.; Lormand, M.; Losurdo, G.; Lough, J. D.; Lousto, C. O.; Lovelace, G.; Lueck, H.; Lumaca, D.; Lundgren, A. P.; Lynch, R.; Ma, Y.; Macfoy, S.; Machenschalk, B.; MacInnis, M.; Macleod, D. M.; Hernandez, I. Magana; Magana-Sandoval, F.; Zertuche, L. Magana; Magee, R. M.; Majorana, E.; Maksimovic, I.; Man, N.; Mandic, V.; Mangano, V.; Mansell, G. L.; Manske, M.; Mantovani, M.; Marchesoni, F.; Marion, F.; Marka, S.; Marka, Z.; Markakis, C.; Markosyan, A. S.; Maros, E.; Martelli, F.; Martellini, L.; Martin, I. W.; Martynov, D. V.; Marx, J. N.; Mason, K.; Masserot, A.; Massinger, T. J.; Masso-Reid, M.; Mastrogiovanni, S.; Matas, A.; Matichard, F.; Matone, L.; Mavalvala, N.; Mayani, R.; Mazumder, N.; McCarthy, R.; McClelland, D. E.; McCormick, S.; McCuller, L.; McGuire, S. C.; McIntyre, G.; McIver, J.; McManus, D. J.; McRae, T.; McWilliams, S. T.; Meacher, D.; Meadors, G. D.; Meidam, J.; Mejuto-Villa, E.; Melatos, A.; Mendell, G.; Mercer, R. A.; Merilh, E. L.; Merzougui, M.; Meshkov, S.; Messenger, C.; Messick, C.; Metzdorff, R.; Meyers, P. M.; Mezzani, F.; Miao, H.; Michel, C.; Middleton, H.; Mikhailov, E. E.; Milano, L.; Miller, A. L.; Miller, A.; Miller, B. B.; Miller, J.; Millhouse, M.; Minazzoli, O.; Minenkov, Y.; Ming, J.; Mishra, C.; Mitra, S.; Mitrofanov, V. P.; Mitselmakher, G.; Mittleman, R.; Moggi, A.; Mohan, M.; Mohapatra, S. R. P.; Montani, M.; Moore, B.C.; Moore, C. J.; Moraru, D.; Moreno, G.; Morriss, S. R.; Mours, B.; Mow-Lowry, C. M.; Mueller, G.; Muir, A. W.; Mukherjee, Arunava; Mukherjee, S.D.; Mukherjee, S.; Mukund, N.; Mullavey, A.; Munch, J.; Muniz, E. A. M.; Murray, P.G.; Napier, K.; Nardecchia, I.; Naticchioni, L.; Nayak, R. K.; Nelemans, G.; Nelson, T. J. N.; Gutierrez-Neri, M.; Nery, M.; Neunzert, A.; Newport, J. M.; Newton, G.; Ng, K. K. Y.; Nguyen, T. T.; Nichols, D.; Nielsen, A. B.; Nissanke, S.; Noack, A.; Nocera, F.; Nolting, D.; Normandin, M. E. N.; Nuttall, L. K.; Oberling, J.; Ochsner, E.; Oelker, E.; Ogin, G. H.; Oh, J. J.; Oh, S. H.; Ohme, F.; Oliver, M.; Oppermann, P.; Oram, Richard J.; O'Reilly, B.; Ormiston, R.; Ortega, L. F.; O'Shaughnessy, R.; Ottaway, D. J.; Overmier, H.; Owen, B. J.; Pace, A. E.; Page, J.; Page, M. A.; Pai, A.; Pai, S. A.; Palamos, J. R.; Palashov, O.; Palomba, C.; Pal-Singh, A.; Pan, H.; Pang, B.; Pang, P. T. H.; Pankow, C.; Pannarale, F.; Pant, B. C.; Paoletti, F.; Paoli, A.; Papa, M. A.; Paris, H. R.; Parker, W.S; Pascucci, D.; Pasqualetti, A.; Passaquieti, R.; Passuello, D.; Patricelli, B.; Pearlstone, B. L.; Pedraza, M.; Pedurand, R.; Pekowsky, L.; Pele, A.; Penn, S.; Castro-Perez, J.; Perreca, A.; Perri, L. M.; Pfeiffer, H. P.; Phelps, M.; Piccinni, O. J.; Pichot, M.; Piergiovanni, F.; Pierro, V.; Pillant, G.; Pinard, L.; Pinto, I. M.; Pitkin, M.; Poggiani, R.; Popolizio, P.; Porter, E. K.; Post, A.; Powell, J.; Prasad, J.; Pratt, J. W. W.; Predoi, V.; Prestegard, T.; Prijatelj, M.; Principe, M.; Privitera, S.; Prodi, G. A.; Prokhorov, L. G.; Puncken, O.; Punturo, M.; Puppo, P.; Puerrer, M.; Qi, H.; Qin, J.; Qiu, S.; Quetschke, V.; Quintero, E. A.; Quitzow-James, R.; Raab, F. J.; Rabeling, D. S.; Radkins, H.; Raffai, P.; Raja, S.; Rajan, C.; Rakhmanov, M.; Ramirez, K. E.; Rapagnani, P.; Raymond, V.; Razzano, M.; Read, J.; Regimbau, T.; Rei, L.; Reid, S.; Reitze, D. H.; Rew, H.; Reyes, S. D.; Ricci, F.; Ricker, P. M.; Rieger, S.; Riles, K.; Rizzo, M.; Robertson, N. A.; Robie, R.; Robinet, F.; Rocchi, A.; Rolland, L.; Rollins, J. G.; Roma, V. J.; Romano, R.; Romel, C. L.; Romie, J. H.; Rosinska, D.; Ross, M. P.; Rowan, S.; Ruediger, A.; Ruggi, P.; Ryan, K.; Rynge, M.; Sachdev, Perminder S; Sadecki, T.; Sadeghian, L.; Sakellariadou, M.; Salconi, L.; Saleem, M.; Salemi, F.; Samajdar, A.; Sammut, L.; Sampson, L. M.; Sanchez, E. J.; Sandberg, V.; Sandeen, B.; Sanders, J. R.; Sassolas, B.; Sathyaprakash, B. S.; Saulson, P. R.; Sauter, O.; Savage, R. L.; Sawadsky, A.; Schale, P.; Scheuer, J.; Schmidt, E.; Schmidt, J; Schmidt, P.; Schnabel, R.B.; Schofield, R. M. S.; Schoenbeck, A.; Schreiber, K.E.C.; Schuette, D.; Schulte, B. W.; Schutz, B. F.; Schwalbe, S. G.; Scott, J.; Scott, S. M.; Seidel, E.; Sellers, D.; Sengupta, A. S.; Sentenac, D.; Sequino, V.; Sergeev, A.; Shaddock, D. A.; Shaffer, T. J.; Shah, A.; Shahriar, M. S.; Shao, L.P.; Shapiro, B.; Shawhan, P.; Sheperd, A.; Shoemaker, D. H.; Shoemaker, D. M.; Siellez, K.; Siemens, X.; Sieniawska, M.; Sigg, D.; Silva, António Dias da; Singer, A; Singer, L. P.; Singh, A.; Singh, R.; Singhal, A.; Sintes, A. M.; Slagmolen, B. J. J.; Smith, B.; Smith, R. J. E.; Smith, R. J. E.; Son, E. J.; Sonnenberg, J. A.; Sorazu, B.; Sorrentino, F.; Souradeep, T.; Spencer, A. P.; Srivastava, A. K.; Staley, A.; Steinke, M.; Steinlechner, J.; Steinlechner, S.; Steinmeyer, D.; Stephens, B. C.; Stone, R.; Strain, K. A.; Stratta, G.; Strigin, S. E.; Sturani, R.; Stuver, A. L.; Summerscales, T. Z.; Sun, L.; Sunil, S.; Sutton, P. J.; Swinkels, B. L.; Szczepanczyk, M. J.; Tacca, M.; Talukder, D.; Tanner, D. B.; Tapai, M.; Taracchini, A.; Taylor, J. A.; Taylor, W.R.; Theeg, T.; Thomas, E. G.; Thomas, M.; Thomas, P.; Thorne, K. A.; Thorne, K. S.; Thrane, E.; Tiwari, S.; Tiwari, V.; Tokmakov, K. V.; Toland, K.; Tonelli, M.; Tornasi, Z.; Torrie, C. I.; Toyra, D.; Travasso, F.; Traylor, G.; Trifiro, D.; Trinastic, J.; Tringali, M. C.; Trozzo, L.; Tsang, K. W.; Tse, M.; Tso, R.; Tuyenbayev, D.; Ueno, K.; Ugolini, D.; Unnikrishnan, C. S.; Urban, A. L.; Usman, S. A.; Vahi, K.; Vahlbruch, H.; Vajente, G.; Valdes, G.; van Bakel, N.; Van Beuzekom, Martin; van den Brand, J. F. J.; Van Den Broeck, C.F.F.; Vander-Hyde, D. C.; van der Schaaf, L.; van Heijningen, J. V.; van Veggel, A. A.; Vardaro, M.; Varma, V.; Vass, S.; Vasuth, M.; Vecchio, A.; Vedovato, G.; Veitch, J.; Veitch, P.J.; Venkateswara, K.; Venugopalan, G.; Verkindt, D.; Vetrano, F.; Vicere, A.; Viets, A. D.; Vinciguerra, S.; Vine, D. J.; Vinet, J. -Y.; Vitale, S.; Vo, T.; Vocca, H.; Vorvick, C.; Voss, D. V.; Vousden, W. D.; Vyatchanin, S. P.; Wade, A. R.; Wade, L. E.; Wade, MT; Walet, R.; Walker, M.; Wallace, L.; Walsh, S.; Wang, G.; Wang, H.; Wang, J. Z.; Wang, M.; Wang, Y. -F.; Wang, Y.; Ward, R. L.; Warner, J.; Was, M.; Watchi, J.; Weaver, B.; Wei, L. -W.; Weinert, M.; Weinstein, A. J.; Weiss, R.; Wen, L.; Wessel, E. K.; Wessels, P.; Westphal, T.; Wette, K.; Whelan, J. T.; Whiting, B. F.; Whittle, C.; Williams, D.; Williams, D.R.; Williamson, A. R.; Willis, J. L.; Willke, B.; Wimmer, M. H.; Winkler, W.; Wipf, C. C.; Wittel, H.; Woan, G.; Woehler, J.; Wofford, J.; Wong, G.W.K.; Worden, J.; Wright, J.L.; Wu, D.S.; Wu, G.; Yam, W.; Yamamoto, H.; Yancey, C. C.; Yap, M. J.; Yu, Hang; Yu, Haocun; Yvert, M.; Zadrozny, A.; Zanolin, M.; Zelenova, T.; Zendri, J. -P.; Zevin, M.; Zhang, L.; Zhang, M.; Zhang, T.; Zhang, Y. -H.; Zhao, C.; Zhou, M.; Zhou, Z.; Zhu, X. J.; Zucker, M. E.; Zweizig, J.

    2017-01-01

    During their first observational run, the two Advanced LIGO detectors attained an unprecedented sensitivity, resulting in the first direct detections of gravitational-wave signals produced by stellar-mass binary black hole systems. This paper reports on an all-sky search for gravitational waves

  13. Hunting for the intermediate-mass Higgs boson in a hadron collider

    International Nuclear Information System (INIS)

    Gunion, J.F.; Kalyniak, P.; Soldate, M.; Galison, P.

    1985-01-01

    We examine the feasibility of identifying in a hadron machine the standard, neutral Higgs boson, produced in association with a W, when the mass of the Higgs is between approximately 100 GeV and 2m/sub W/. The production cross section is calculated with quasirealistic cuts imposed under the assumption that the Higgs decays into tt-bar. Possible backgrounds arising from the continuum production of tt-bar, tb-bar, or t-barb accompanied by a W are computed as well

  14. Intermediate-mass Elements in Young Supernova Remnants Reveal Neutron Star Kicks by Asymmetric Explosions

    Science.gov (United States)

    Katsuda, Satoru; Morii, Mikio; Janka, Hans-Thomas; Wongwathanarat, Annop; Nakamura, Ko; Kotake, Kei; Mori, Koji; Müller, Ewald; Takiwaki, Tomoya; Tanaka, Masaomi; Tominaga, Nozomu; Tsunemi, Hiroshi

    2018-03-01

    The birth properties of neutron stars (NSs) yield important information about the still-debated physical processes that trigger the explosion as well as on intrinsic neutron-star physics. These properties include the high space velocities of young neutron stars with average values of several 100 km s‑1, with an underlying “kick” mechanism that is not fully clarified. There are two competing possibilities that could accelerate NSs during their birth: anisotropic ejection of either stellar debris or neutrinos. Here we present new evidence from X-ray measurements that chemical elements between silicon and calcium in six young gaseous supernova remnants are preferentially expelled opposite to the direction of neutron star motion. There is no correlation between the kick velocities and magnetic field strengths of these neutron stars. Our results support a hydrodynamic origin of neutron-star kicks connected to asymmetric explosive mass ejection, and they conflict with neutron-star acceleration scenarios that invoke anisotropic neutrino emission caused by particle and nuclear physics in combination with very strong neutron-star magnetic fields.

  15. Sideward peak of intermediate mass fragments in high energy proton induced reactions

    International Nuclear Information System (INIS)

    Ohnishi, A.; Hirata, Y.; Otuka, N.; Nara, Y.; Kido, T.; Maruyama, T.; Takada, H.; Chiba, S.

    2002-01-01

    We study the sideward enhanced IMF emission mechanism by using a combined framework of a transport model (JAM/MF) and a newly developed Non-Equilibrium Percolation (NEP) model. We find that the sideward enhancement may emerge if the fragmentation takes place within a short time scale around 20 fm/c. Within this short time period, the un-heated part of the residual nucleus is kept to have doughnut shape, then the Coulomb repulsion from this shape strengthens the sideward emission of IMFs. (author)

  16. Abundances in Planetary Nebulae: an Autopsy of Low and Intermediate Mass Stars

    Science.gov (United States)

    Buell, James Francis

    In this work we report on the results of synthetic thermally pulsing asymptotic giant branch models (TP-AGB) and compare the results to the abundance ratios in a sample of planetary nebulae. We use updated the input parameters for mass-loss, the stellar luminosity, and dredge-up. We calculated models with masses between 0.8 solar masses and 8 solar masses. We also calculated models with (Fe/H) between -2.5 and 0.3. The effect of the first, second, and third dredge-up as well as hot-bottom burning are reported on. The analysis of a sample of Galactic bulge and disk planetary nebulae is also reported on.

  17. CHEMICAL COMPOSITION OF INTERMEDIATE-MASS STAR MEMBERS OF THE M6 (NGC 6405) OPEN CLUSTER

    Energy Technology Data Exchange (ETDEWEB)

    Kılıçoğlu, T.; Albayrak, B. [Ankara University, Faculty of Science, Department of Astronomy and Space Sciences, 06100, Tandoğan, Ankara (Turkey); Monier, R. [LESIA, UMR 8109, Observatoire de Paris Meudon, Place J. Janssen, Meudon (France); Richer, J. [Département de physique, Université de Montréal, 2900, Boulevard Edouard-Montpetit, Montréal QC, H3C 3J7 (Canada); Fossati, L., E-mail: tkilicoglu@ankara.edu.tr, E-mail: balbayrak@ankara.edu.tr, E-mail: Richard.Monier@obspm.fr, E-mail: Jacques.Richer@umontreal.ca, E-mail: lfossati@astro.uni-bonn.de [Argelander-Institut für Astronomie der Universität Bonn, Auf dem Hügel 71, D-53121, Bonn (Germany)

    2016-03-15

    We present here the first abundance analysis of 44 late B-, A-, and F-type members of the young open cluster M6 (NGC 6405, age about 75 Myr). Low- and medium-resolution spectra, covering the 4500–5840 Å wavelength range, were obtained using the FLAMES/GIRAFFE spectrograph attached to the ESO Very Large Telescopes. We determined the atmospheric parameters using calibrations of the Geneva photometry and by adjusting the H{sub β} profiles to synthetic ones. The abundances of up to 20 chemical elements, from helium to mercury, were derived for 19 late B, 16 A, and 9 F stars by iteratively adjusting synthetic spectra to the observations. We also derived a mean cluster metallicity of [Fe/H] = 0.07 ± 0.03 dex from the iron abundances of the F-type stars. We find that for most chemical elements, the normal late B- and A-type stars exhibit larger star-to-star abundance variations than the F-type stars probably because of the faster rotation of the B and A stars. The abundances of C, O, Mg, Si, and Sc appear to be anticorrelated with that of Fe, while the opposite holds for the abundances of Ca, Ti, Cr, Mn, Ni, Y, and Ba as expected if radiative diffusion is efficient in the envelopes of these stars. In the course of this analysis, we discovered five new peculiar stars: one mild Am, one Am, and one Fm star (HD 318091, CD-32 13109, GSC 07380-01211, CP1), one HgMn star (HD 318126, CP3), and one He-weak P-rich (HD 318101, CP4) star. We also discovered a new spectroscopic binary, most likely a SB2. We performed a detailed modeling of HD 318101, the new He-weak P-rich CP star, using the Montréal stellar evolution code XEVOL which self-consistently treats all particle transport processes. Although the overall abundance pattern of this star is properly reproduced, we find that detailed abundances (in particular the high P excess) resisted modeling attempts even when a range of turbulence profiles and mass-loss rates were considered. Solutions are proposed which are still under investigation.

  18. Contributions to the study of nuclear reactions mechanism induced by heavy ions on intermediate mass nuclei

    International Nuclear Information System (INIS)

    Avrigeanu, M.

    1982-01-01

    A detailed analysis is presented, based on Hauser-Feshbach statistical model calculations of the γ-ray excitation functions measured in the sup(74,76)Ge ( 12 C, xn) and sup(72,73)Ge ( 16 O,xnyp) reactions. The most usual quantities provided by the in beam γ-ray measurements such as the cross sections for the population of the final states as well as the decay scheme and the degree of alignment of these states mainly offer the means of testing models of both the reaction mechanism and nuclear properties of high excitation energies, since they concentrate information on the whole reaction process. Experimental information on sup(85,86)Sr and sup(85,86)Y, γ-decay scheme and the excitation functions for the population of the final states were obtained by sub(74,76)Ge ( 12 C,αn), n = 2-4, sup(74,76)Ge ( 14 N,xn) n = 3-5, sup(72,73)Ge ( 16 O,xnyp), x = 1-3, y=1 reactions at incident energies between 35 and 60 MW. Statistical model calculations in the Hauser-Feshbach formalism have been compared with the experimental γ-ray excitation functions. The competitive emission of neutrons, protons, alpha particles and gamma rays from the compound nucleus has been considered in the calculations. The calculations describe satisfactorily the total cross sections for the population of the 2n, 3n and 4n channels for 12 C + sup(74,76)Ge and 2n, np, 3n and 2np channels for 16 O + 72 Ge. The calculations are sensitive to the characteristics of the excited levels (such as spin values) but htis this sensitivity could be exploited with some reliability only if one makes use of a rather complete level scheme in the calculations. In the case of 2n, np, 3n and 2 np channels for 16 O+ 73 Ge one concludes on the reliability of consideration some structural aspects in the calculations

  19. A full-acceptance detector for SSC physics at low and intermediate mass scales

    International Nuclear Information System (INIS)

    Bjorken, J.D.

    1992-01-01

    The author of this paper is interested in seeing the proposed detector and physics measurements done at the SSC. It should be clear that the author views this subject as important enough to warrant the effort going into producing this tome. It should also be clear that nothing will happen unless members of the experimental community come forward and do real work to see whether the ideas contained herein are sound and that the physics is indeed worth a dedicated effort at the SSC. Therefore this paper is directed more toward the experimental community than the SSC Laboratory. However, since initial encouragement (or discouragement) by the laboratory is evidently very important, this paper also contains specific requests addressed to the SSC Laboratory

  20. Baryon- and lepton-number non-conserving processes and intermediate mass scales

    International Nuclear Information System (INIS)

    Nieves, J.F.

    1981-01-01

    An analysis of the possible mechanisms to mediate various baryon- and lepton-number non-conserving processes is presented. Processes considered include the Δ(B+L) = 0 proton decay, ΔB = 2 neutron-antineutron oscillations and neutrino Majorana masses. Among our results we find that, in the absence of elementary scalars and exotic fermions, all the renormalizable interactions of vector bosons and ordinary fermions conserve B-L. Therefore, the observation of Δ(B-L) not equal 0 processes would imply the existence of elementary scalars and/or exotic fermions. (orig.)

  1. A new direction for dark matter research: intermediate-mass compact halo objects

    Energy Technology Data Exchange (ETDEWEB)

    Chapline, George F. [Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, CA (United States); Frampton, Paul H., E-mail: george.chapline@gmail.com, E-mail: paul.h.frampton@gmail.com [15 Summerheights, 29 Water Eaton Road, Oxford OX2 7PG (United Kingdom)

    2016-11-01

    The failure to find evidence for elementary particles that could serve as the constituents of dark matter brings to mind suggestions that dark matter might consist of massive compact objects (MACHOs). In particular, it has recently been argued that MACHOs with masses > 15 M {sub ⊙} may have been prolifically produced at the onset of the big bang. Although a variety of astrophysical signatures for primordial MACHOs with masses in this range have been discussed in the literature, we favor a strategy that uses the potential for magnification of stars outside our galaxy due to gravitational microlensing of these stars by MACHOs in the halo of our galaxy. We point out that the effect of the motion of the Earth on the shape of the micro-lensing brightening curves provides a promising approach to testing over the course of next several years the hypothesis that dark matter consists of massive compact objects.

  2. Regional regularities for the even-even nuclei in intermediate mass region

    International Nuclear Information System (INIS)

    Varshney, Mani; Singh, M.; Gupta, D.K.; Singh, Yuvraj; Gupta, K.K.; Bihari, Chhail; Sharma, Aparna; Varshney, A.K.

    2011-01-01

    With the development of experimental techniques more and more nuclear data are accumulated and compiled for over five decades. The proton neutron interaction has been considered the key ingredient in the development of collectivity and ultimately the deformation in atomic nuclei. The purpose of the present study is to analyze the growth of R4/2 in different mass regions. The rate of growth regions in regions having proton number Z = 38, 54, 60 and 76 with changing neutron number where the interaction between particle - particle, particle - hole and hole - hole

  3. HIGH- AND INTERMEDIATE-MASS YOUNG STELLAR OBJECTS IN THE LARGE MAGELLANIC CLOUD

    International Nuclear Information System (INIS)

    Gruendl, Robert A.; Chu, Y.-H.

    2009-01-01

    Archival Spitzer Infrared Array Camera (IRAC) and MIPS observations of the Large Magellanic Cloud (LMC) have been used to search for young stellar objects (YSOs). We have carried out independent aperture photometry of these data and merged the results from different passbands to produce a photometric catalog. To verify our methodology we have also analyzed the data from the SAGE and SWIRE Legacy programs; our photometric measurements are in general agreement with the photometry released by these programs. A detailed completeness analysis for our photometric catalog of the LMC shows that the 90% completeness limits are, on average, 16.0, 15.0, 14.3, 13.1, and 9.2 mag at 3.6, 4.5, 5.8, 8.0, and 24 μm, respectively. Using our mid-infrared photometric catalogs and two simple selection criteria, [4.5]-[8.0]>2.0 to exclude normal and evolved stars and [8.0]>14-([4.5]-[8.0]) to exclude background galaxies, we have identified a sample of 2910 sources in the LMC that could potentially be YSOs. We then used the Spitzer observations complemented by optical and near-infrared data to carefully assess the nature of each source. To do so we simultaneously considered multiwavelength images and photometry to assess the source morphology, spectral energy distribution (SED) from the optical through the mid-infrared wavelengths, and the surrounding interstellar environment to determine the most likely nature of each source. From this examination of the initial sample, we suggest that 1172 sources are most likely YSOs. We have also identified 1075 probable background galaxies, consistent with the expected number estimated from the SWIRE survey. Spitzer IRS observations of 269 of the brightest YSOs from our sample have confirmed that ∼>95% are indeed YSOs. An examination of color-color and color-magnitude diagrams shows no simple criteria in color-magnitude space that can unambiguously separate the LMC YSOs from all asymptotic giant branch (AGB)/post-AGB stars, planetary nebulae, and background galaxies. A comprehensive search for YSOs in the LMC has also been carried out by the SAGE team and reported by Whitney et al. There are three major differences between these two searches. (1) In the common region of color-magnitude space, ∼850 of our 1172 probable YSOs are missed in the SAGE YSO catalog because their conservative point-source identification criteria have excluded YSOs superposed on complex stellar and interstellar environments. (2) About 20%-30% of the YSOs identified by the SAGE team are sources we classify as background galaxies. (3) The SAGE YSO catalog identifies YSO in parts of color-magnitude space that we excluded and thus contains more evolved or fainter YSOs missed by our analysis. The shortcomings and strengths of both these YSO catalogs should be considered prior to statistical studies of star formation in the LMC. Finally, the mid-infrared luminosity functions in the IRAC bands of our most likely YSO candidates in the LMC can be well described by N(L) ∝ L -1 , which is consistent with the Salpeter initial mass function if a mass-luminosity relation of L ∝ M 2.4 is adopted.

  4. Bifurcations and Chaos of AN Immersed Cantilever Beam in a Fluid and Carrying AN Intermediate Mass

    Science.gov (United States)

    AL-QAISIA, A. A.; HAMDAN, M. N.

    2002-06-01

    The concern of this work is the local stability and period-doubling bifurcations of the response to a transverse harmonic excitation of a slender cantilever beam partially immersed in a fluid and carrying an intermediate lumped mass. The unimodal form of the non-linear dynamic model describing the beam-mass in-plane large-amplitude flexural vibration, which accounts for axial inertia, non-linear curvature and inextensibility condition, developed in Al-Qaisia et al. (2000Shock and Vibration7 , 179-194), is analyzed and studied for the resonance responses of the first three modes of vibration, using two-term harmonic balance method. Then a consistent second order stability analysis of the associated linearized variational equation is carried out using approximate methods to predict the zones of symmetry breaking leading to period-doubling bifurcation and chaos on the resonance response curves. The results of the present work are verified for selected physical system parameters by numerical simulations using methods of the qualitative theory, and good agreement was obtained between the analytical and numerical results. Also, analytical prediction of the period-doubling bifurcation and chaos boundaries obtained using a period-doubling bifurcation criterion proposed in Al-Qaisia and Hamdan (2001 Journal of Sound and Vibration244, 453-479) are compared with those of computer simulations. In addition, results of the effect of fluid density, fluid depth, mass ratio, mass position and damping on the period-doubling bifurcation diagrams are studies and presented.

  5. Confidence in the use of information management and technology (IM and T) in radiography: Is age a barrier?

    Energy Technology Data Exchange (ETDEWEB)

    Rogers, Hywel, E-mail: rogershj1@cf.ac.u [Department of Radiography, School of Healthcare Studies, Cardiff University, Heath Park, Cardiff, CF14 4XN (United Kingdom); Pratt, Shaaron; Brown, Paul; Gambling, Tina [Department of Radiography, School of Healthcare Studies, Cardiff University, Heath Park, Cardiff, CF14 4XN (United Kingdom)

    2010-08-15

    Introduction: Age has been reported as a barrier to the use of Information Management and Technology (IM and T). Radiographers' confidence and ability in IM and T may be related to age and it is the aim of this research to investigate this relationship. Method: An online survey method gathered views from the radiographic population, between 31st August 2008 and 10th October 2008. The questionnaire encompassed IM and T ability, work based IM and T usage, personal IM and T usage, security and governance issues, education and training experience, the future and demographic details. For the purpose of this paper the first three sections and demographic section were considered. Results: Radiographers showed a good level of ability and confidence in the use of IM and T. Some general applications such as word processing showed a decreased confidence with age. Confidence in all radiography specific applications was scored highly although confidence in the use of Hospital Information Systems (HIS) and radiotherapy Treatment Planning Systems (TPS) showed the least confidence. Statistical analysis did not reveal a strong link between age and confidence in all applications. Discussion: While a link between age and confidence was not found in this study, frequency of use and training in IM and T require further investigation in relation to specific roles.

  6. Confidence in the use of information management and technology (IM and T) in radiography: Is age a barrier?

    International Nuclear Information System (INIS)

    Rogers, Hywel; Pratt, Shaaron; Brown, Paul; Gambling, Tina

    2010-01-01

    Introduction: Age has been reported as a barrier to the use of Information Management and Technology (IM and T). Radiographers' confidence and ability in IM and T may be related to age and it is the aim of this research to investigate this relationship. Method: An online survey method gathered views from the radiographic population, between 31st August 2008 and 10th October 2008. The questionnaire encompassed IM and T ability, work based IM and T usage, personal IM and T usage, security and governance issues, education and training experience, the future and demographic details. For the purpose of this paper the first three sections and demographic section were considered. Results: Radiographers showed a good level of ability and confidence in the use of IM and T. Some general applications such as word processing showed a decreased confidence with age. Confidence in all radiography specific applications was scored highly although confidence in the use of Hospital Information Systems (HIS) and radiotherapy Treatment Planning Systems (TPS) showed the least confidence. Statistical analysis did not reveal a strong link between age and confidence in all applications. Discussion: While a link between age and confidence was not found in this study, frequency of use and training in IM and T require further investigation in relation to specific roles.

  7. İletişim Çalışmalarında Yeni Bir Mecra: Finansal İletişim

    Directory of Open Access Journals (Sweden)

    Gökhan Gökgöz

    2013-09-01

    Full Text Available 1970’li yıllar toplumsal ve politik tarih açısından önemli bir uğrağı temsil eder. Bu yılların başında yaşanan kriz, ekonominin işleyiş süreçlerini, devletin yapısını ve toplumsal alanın tasavvur edilme biçimini büyük ölçüde değiştirmiştir. Bu dönemde, finansal sermaye, kapitalizm içerisinde bir hegemonik lider olarak ön plana çıkmış; devlet, bir yandan üretimin çekirdeğinden uzak bir yerde konumlandırılırken diğer yandan paranın dolaşım kanallarının rehabilitasyonu işine odaklanmış; insana ilişkin değerler, kültürel mefhumlar ve toplumsal pratikler ise birer değişken olarak ekonomi-politikanın merkezine taşınmıştır. Kültür ile ekonomi arasındaki geleneksel ilişki bozulmuş; bir ekonomi-politikanın başarısı, toplumsal aktörlere temas etme kabiliyeti ile paralel hale gelmiştir. Finansallaşma sürecinde bu temas, iletişim politikaları vasıtasıyla sağlanır; ekonomi-politika ve bundan sorumlu merkezi kurumlarla toplumsal alan arasındaki bağ, iletişim stratejileri üzerinden kurulur; ekonomik alan ile kültürel alan arasındaki boşluk, iletişim kanalları içerisinden taşınan enformasyon marifetiyle doldurulur; insana ilişkin öngörülemezlikler, iletişim süreçleri vasıtasıyla öngörülebilir kılınır. Bu çalışmada, iletişim çalışmaları içerisinde yeni bir mecra olarak çağrılan “finansal iletişim”in farklı temas noktalarına işaret edilecek ve her bir uğrağın finansal iletişim alanına bağlandığı nokta, modeller üzerinden gösterilecektir. 

  8. Detección de características en imágenes basadas en el tensor de color

    OpenAIRE

    Caballero, Filadelfio; Sebastian y Zuñiga, Jose Maria

    2009-01-01

    La correspondencia entre dos imágenes sigue siendo un de los aspectos más críticos de la visión por computador. Su resolución se emplea en numerosas tareas, entre las que destacan: Reconocimiento de objetos o escenas, resolver una estructura 3D entre múltiples imágenes, correspondencia estéreo, y seguimiento de objetos. El descriptor Sift ha demostrado ser el mejor detector de características invariantes en imágenes en escala de gris; sin embargo cuando la imagen tiene una pobre ilu...

  9. Dust abatement in mining and tunnelling - status report; Stand der Technik bei der Staubbekaempfung im Berg- und Tunnelbau

    Energy Technology Data Exchange (ETDEWEB)

    Mikki, P. [CFT GmbH, Compact-Filtertechnik, Gladbeck (Germany)

    2005-02-01

    Health and safety have priority in underground mining, especially dust and silicosis prevention in mining and tunnelling. While silicosis is not considered as an occupational disease in the strict sense, it is well known that most silicosis cases occur in these industries. (orig.) [German] Im Untertagebau sind die Probleme des Gesundheitsschutzes von vorrangiger Bedeutung, insbesondere im Bereich der Staub- und Silikosebekaempfung im Berg- und Tunnelbau. Wenn auch bei der Silikose nicht ausschliesslich von einer unter Tagespezifischen Berufskrankheit gesprochen werden kann, so entfaellt doch der ueberwiegende Teil der auftretenden Krankheitsfaelle auf diese Industriezweige. (orig.)

  10. An Innovative Approach to the Integrated Management System Development: SIMPRO-IMS Web Based Environment

    Directory of Open Access Journals (Sweden)

    Kristina Zgodavova

    2012-12-01

    Full Text Available The purpose of this paper is to contribute to learning, knowledge creation and knowledge transfer for building organization innovability by integrating the management systems in the SIMPRO-IMS web based environment. The paper content consists of the interpretation of role-play simulation, role-play simulation process description, methodology, and the employment of role-play simulation outcomes, as well as the discussion of the knowledge thus obtained. Primary the model of the SIMPRO-Q education environment has been developed and tested during a period of 15 years in several industrial organizations as well as service organizations such as Higher Education Institution (HEI and Healthcare Organization (HCO. The newest version SIMPRO-IMS has recently been developed to support a need of integration of management systems and information archiving. With the last development, SIMPRO-IMS web based environment, processes of five ISO systems are integrated for parallel development, implementation, auditing, maintaining and leading. SIMPRO-IMS provides management with the apparatus necessary to realize a systematic and verifiable approach to the creation and control of IMS documentation. At the same time contributes to the preservation of organization memory in response to the growing challenges of globalization and digitalization. The research is limited by the complexity of a real system and possible empiric results verification. The results achieved are verified when people really overcome the resistance to change. This can be assessed thoughtfully only after some period of time. Another limitation is presented by measurability of real enhancement achieved in quality, safety and environmentality of production, and business continuity and social responsibility of an organization. Development and progress in the methodology of SIMPRO-IMS web based environment is encoded in upgrading the SIMPRO database by processes of the environmental management

  11. STUDI KUALITATIF MENGENAI PERSEPSI DAN PERILAKU SEKSUAL WANITA PEKERJA SEKS KOMERSIAL (PSK DALAM UPAYA PENCEGAHAN IMS DI KOTA SEMARANG TAHUN 2012

    Directory of Open Access Journals (Sweden)

    Ratu Matahari

    2015-04-01

    Full Text Available Pendahuluan: Peningkatan jumlah kasus IMS di Kota Semarangdengan jumlah kasus IMS pada tahun 2009 tercatat mencapai 2.471 kasusdan jumlah kasus IMS pada tahun 2011 adalah 2473 kasus. Tujuan: Mendeskripsikan persepsi dan perilaku seksual wanita Pekerja Seks Komersial (PSK di Lokalisasi Sunan Kuning terhadap upaya pencegahan Infeksi Menular Seksual (IMS di Kota Semarang. Metode: Penelitian ini dilakukan dengan menggunakan teknik wawancara mendalam (indepth interview pada enam PSK yang mengalami IMS dan mewawancarai dua kelompok diskusi (FGD, seorang mucikari, dan seorang petugas lapangan (PL sebagai triangulasi. Analisis data menggunakan analisis isi (content analysis. Hasil: Pola Pengetahuan PSK dan persepsi PSK terhadap IMS juga sudah baik, tetapi perilaku PSK dalam upaya mencegah penularan IMS masih belum bisa dikatakan baik karena penggunaan kondom diantara pekerja seks komersial pada saat melakukan hubungan seksual dengan pelanggannya masih rendah. Tidak adanya dukungan dari mucikari dalam meningkatkan perilaku pencegahan IMS. Hal ini menunjukkan bahwa kepedulian terhadap kesehatan diri sendiri masih rendah. Kesimpulan: Perilaku pencegahan PSK terhadap penularan IMS belum baik. Perlu diadakan pelatihan dengan metode role playing kepada para PSK dan mucikari untuk meningkatkan kepedulian mereka terhadap kesehatan sehingga diharapkan akan terjadi perubahan perilaku baru dalam upaya pencegahan penularan IMS terhadap diri mereka sendiri atau pelanggan.  Kata kunci: Persepsi, pekerja seks komersial, IMS, Kota Semarang

  12. Veränderungen der Serumlipide bei Senioren im Verlauf des Alterns unter Berücksichtigung ausgewählter Einflussfaktoren : eine Untersuchung im Rahmen der Gießener Senioren Langzeitstudie

    OpenAIRE

    Richter, Margrit

    2014-01-01

    In der vorliegenden Arbeit wurde im Rahmen der Giessener Senioren Langzeitstudie (GISELA) untersucht, ob und in wie weit sich die Konzentrationen der Serumlipide (Gesamtcholesterol (TC), HDL-Cholesterol (HDL-C), LDL-Cholesterol (LDL-C), NonHDL-Cholesterol (NonHDL-C) und Triglyceride (TG)) im Verlauf fortgeschrittenen Alterns verändern. Dabei wurden folgende mögliche Einflussfaktoren berücksichtigt: BMI, WHR, PAI, Fettmasse, Kohlenhydrat¬zufuhr, Ballaststoffzufuhr, Zufuhr mehrfach ungesättigte...

  13. Contaminant screening of wastewater with HPLC-IM-qTOF-MS and LC+LC-IM-qTOF-MS using a CCS database.

    Science.gov (United States)

    Stephan, Susanne; Hippler, Joerg; Köhler, Timo; Deeb, Ahmad A; Schmidt, Torsten C; Schmitz, Oliver J

    2016-09-01

    Non-target analysis has become an important tool in the field of water analysis since a broad variety of pollutants from different sources are released to the water cycle. For identification of compounds in such complex samples, liquid chromatography coupled to high resolution mass spectrometry are often used. The introduction of ion mobility spectrometry provides an additional separation dimension and allows determining collision cross sections (CCS) of the analytes as a further physicochemical constant supporting the identification. A CCS database with more than 500 standard substances including drug-like compounds and pesticides was used for CCS data base search in this work. A non-target analysis of a wastewater sample was initially performed with high performance liquid chromatography (HPLC) coupled to an ion mobility-quadrupole-time of flight mass spectrometer (IM-qTOF-MS). A database search including exact mass (±5 ppm) and CCS (±1 %) delivered 22 different compounds. Furthermore, the same sample was analyzed with a two-dimensional LC method, called LC+LC, developed in our group for the coupling to IM-qTOF-MS. This four dimensional separation platform revealed 53 different compounds, identified over exact mass and CCS, in the examined wastewater sample. It is demonstrated that the CCS database can also help to distinguish between isobaric structures exemplified for cyclophosphamide and ifosfamide. Graphical Abstract Scheme of sample analysis and database screening.

  14. Superplastic deformation of P/M and I/M Al-Li based alloys

    International Nuclear Information System (INIS)

    Lederich, R.J.; Sastry, S.M.L.

    1984-01-01

    Incremental strain-rate and constant strain-rate cone-forming tests have been carried out at 450-550 C to investigate the superplastic forming characteristics of Al-Li-Cu-Mn, Al-Li-Cu-Mg-Zr, and Al-Li-Zn-Mg alloys processed by powder-metallurgy (P/M) and ingot-metallurgy (I/M) techniques. It is found that P/M Al-Li alloys containing 0.2 pct Zr are inherently superplastically formable without the need for extensive thermomechanical processing. I/M Al-Li alloys containing Zr are also superplastically formable. The mechanical properties of the superplastically formed and solution-treated-and-aged alloys are comparable to those of solution-treated-and-aged alloys before superplastic forming. 6 references

  15. Sensorless Control of IM for Limp-Home Mode EV Applications

    DEFF Research Database (Denmark)

    Dehghan-Azad, Ehsan; Gadoue, Shady; Atkinson, David

    2017-01-01

    in electric vehicle (EV) applications. The proposed scheme was experimentally tested on a laboratory dynamometer using a 19-kW IM and a 29-kW controller, which are both currently used in the automotive industry for EV applications. The scheme was also implemented on an electric golf buggy which was equipped......This paper presents a novel speed estimation scheme for induction motors (IMs) based on back electromotive-force model reference adaptive system (back-EMF MRAS). The scheme is employed for the purpose of sensorless fault-Tolerant torque-controlled drives used in a limp-home mode operation...... investigated for vehicle starting from standstill, wide speed range including field weakening region, and hill-starting operations. The proposed scheme is computationally easy to implement, robust against sensitivity to parameters variations, inverter nonlinearity and errors due to digitization in the field...

  16. Future disposal of sewage sludge in Saxony; Zukuenftige Klaerschlammentsorgung im Freistaat Sachsen

    Energy Technology Data Exchange (ETDEWEB)

    Kowalski, H.D, [Saechsisches Staatsministerium fuer Umwelt und Landesentwicklung, Dresden (Germany)

    1995-11-01

    Early in 1994, the Saxonian ministry of environment and regional development (SMU) commissioned an expertise with the preliminary title ``Concept for long-term strategies for sewage sludge disposal from municipal sewage treatment plants in Saxony``. The objective was to develop and evaluate scenarios and submit proposals for securing sewage sludge disposal in the long-term, making use of existing, planned or envisaged plants. The article presents some of the results of this expertise. (orig./SR) [Deutsch] Das Saechsische Staatsministerium fuer Umwelt und Landesentwicklung (SMU) hat Anfang 1994 unter dem Arbeitstitel `Konzeption fuer die Langfriststrategie zur Klaerschlammentsorgung aus kommunalen Abwasserreinigungsanlagen im Freistaat Sachsen` die Ausarbeitung eines Gutachtens veranlasst. Die Zielstellung bestand darin, unter Nutzung vorhandener, bereits geplanter oder neu zu plandender Anlagen Szenarien zu entwickeln und zu bewerten und Vorschlaege fuer Massnahmen zu unterbreiten, welche es ermoeglichen, langfristig eine Entsorgungssicherheit des Klaerschlammes zu gewaehrleisten. Einige Ergebnisse aus diesem Gutachten sollen im Folgenden vorgestellt werden. (orig./SR)

  17. Evaluation von Bildungssoftware im Spannungsfeld von Objektivität und praktischer Anwendung

    Directory of Open Access Journals (Sweden)

    Cornelia Biffi

    2002-05-01

    Full Text Available Das Angebot an Bildungs- bzw. Lernsoftware umfasst eine breite Palette von sehr unterschiedlichen Produkten. Eigentliche Unterrichtssoftware, die speziell für den Unterricht hergestellt und auf Lehrmittel und Curriculum abgestimmt ist, gibt es kaum. Im Projekt «Lernsoftware Evaluation» des Pestalozzianums Zürich ermitteln Lehrpersonen die Qualität von Bildungssoftware, indem sie diese im Unterricht einsetzen und anhand eines Kriterienrasters beurteilen. Eine Analyse der in der Evaluation generierten Daten belegt die Problematik des Anspruchs einer objektiven Qualitätsbeurteilung. Es werden die Probleme bei der Anwendung von Kriterienraster und Beurteilungsmodus aufgezeigt und ermittelt, worin die subjektiven Qualitätsmassstäbe der Evaluierenden begründet sind. Diese Ausführungen sind Teil eines Forschungsprojekts für die Weiterentwicklung einer theoretisch fundierten, aber dennoch praxisnahen Evaluation von Bildungssoftware.

  18. Broken Bar Fault Detection in IM Operating Under No-Load Condition

    Directory of Open Access Journals (Sweden)

    RELJIC, D.

    2016-11-01

    Full Text Available This paper presents a novel method for broken rotor bar detection in a squirrel-cage induction motor (IM. The proposed method applies a single-phase AC voltage as a test signal on motor terminals, resulting in a stator backward-rotating magnetic field. The field ultimately causes additional current components in the stator windings whose magnitudes depend on the broken bar fault severity, even if the motor is unloaded. This allows robust broken bar fault detection based only on standard motor current signature analysis (MCSA technique. The proposed fault detection method is at first verified via simulations, using an IM model based on finite element analysis (FEA and multiple coupled circuit approach (MCCA. The subsequent experimental investigations have shown good agreement with both theoretical predictions and simulation results.

  19. Evaluation of SDS depletion using an affinity spin column and IMS-MS detection

    Energy Technology Data Exchange (ETDEWEB)

    Hengel, Shawna M.; Floyd, Erica A.; Baker, Erin Shammel; Zhao, Rui; Wu, Si; Pasa-Tolic, Ljiljana

    2012-11-01

    While the use of detergents is necessary for a variety of protein isolation preparation protocols, often prior to mass spectral (MS) analysis, they are not compatible with MS analysis due to ion suppression and adduct formation. This manuscript describes optimization of detergent removal, using commercially available SDS depletion spin columns containing an affinity resin, providing for both increased protein recovery and thorough SDS removal. Ion mobility spectrometry coupled with mass spectrometry (IMS-MS) allowed for a concurrent analysis of both analyte and detergent. In the case of both proteins and peptides, higher detergent concentrations than previously reported provided an increase of sample recovery; however there was a limit as SDS was detected by IMS-MS at higher levels of SDS indicating incomplete detergent depletion. The results also suggest optimal conditions for SDS removal are dependent on the sample concentration. Overall, this study provides a useful guide for proteomic studies where SDS is required for efficient sample preparation.

  20. Artroscopia del hombro: Técnica e imágenes

    OpenAIRE

    ARANGO GARCIA, GASTON; ALVAREZ CAMBRAS, RODRIGO; LOPEZ CABRERA, JOSE RAMON; MIRANDEZ OLARAN, HUGO; LARA VALDIVIA, JESUS

    1995-01-01

    En este trabajo se muestra cómo realizar la técnica de la artroscopia de la articulación del hombro. Se presentan vistas de las imágenes artroscópicas y de la anatomía normal de la articulación para ayudar a la interpretación e identificación de las imágenes patológicas más comúnmente encontradas. Se realizó la técnica en 8 pacientes, deportistas con hombros dolorosos, en los cuales el diagnóstico clínico no era certero. Este trabajo se realizó en 1990 para introducir la técnica artroscópica ...

  1. An Introduction of IMS(Intramuscular Stimulation Therapy with Theoretcial Basis and Clinical Applications

    Directory of Open Access Journals (Sweden)

    Ki-Rok Kwon

    2003-06-01

    Full Text Available Results : 1. The most important concept of IMS is chronic pain illness that may develop into hypersensitivity of the nerves, i.e., neuropathy. 2. Muscle shortening may be triggered by stress, including emotional, physical, external, and internal factors. 3. Muscle shortening increases mechanical tension on the muscles as well as inducing abrasion of the tissues by stretching ligament, tendon, cartilage, bone, and etc. 4. Pain from neuropathy is normally manifested on musculoskeletal system and spasm or shortening play as the central axis of this pain. 5. Neuropathy often appears at the nerve root level and the most important decisive factor of radiculopathy is muscle shortening. 6. Spondylosis is the most common cause of radiculopathy. 7. The most significant treatment principle of IMS is to relieve muscle shortening and remove stimulating determinant from the vertebrae. 8. Dry needling is quite effective for treating various pain caused by muscle shortening.

  2. Adaptively loaded IM/DD optical OFDM based on set-partitioned QAM formats.

    Science.gov (United States)

    Zhao, Jian; Chen, Lian-Kuan

    2017-04-17

    We investigate the constellation design and symbol error rate (SER) of set-partitioned (SP) quadrature amplitude modulation (QAM) formats. Based on the SER analysis, we derive the adaptive bit and power loading algorithm for SP QAM based intensity-modulation direct-detection (IM/DD) orthogonal frequency division multiplexing (OFDM). We experimentally show that the proposed system significantly outperforms the conventional adaptively-loaded IM/DD OFDM and can increase the data rate from 36 Gbit/s to 42 Gbit/s in the presence of severe dispersion-induced spectral nulls after 40-km single-mode fiber. It is also shown that the adaptive algorithm greatly enhances the tolerance to fiber nonlinearity and allows for more power budget.

  3. Staat und Welt als Bezugssysteme des Handelns im Prozess der Globalisierung

    Directory of Open Access Journals (Sweden)

    Lutz Zündorf

    2002-07-01

    Full Text Available In diesem Beitrag wird Globalisierung als Prozess der Umstellung von Bezugssystemen des Denkens und Handelns von "Staat" auf "Welt" konzipiert. Von der klassischen Definition des Nationalstaates ausgehend, werden zuerst drei staatszentrierte Bezugssysteme (Rechtsstaat, Sozialstaat, Territorialstaat skizziert. Im zweiten Schritt werden globale Bezugssysteme (Welt als einheitlicher Markt, als Gefüge von Herrschaftsgebilden, als Konglomerat von Kulturen umrissen. Die Argumentation läuft darauf hinaus, zu zeigen, dass es sich bei diesen Konzeptionen keineswegs um geschlossene und harmonische Gesellschafts- und Weltbilder handelt; vielmehr enthält jedes der sechs Bezugsysteme spezifische Spannungs- und Konfliktlinien, aus denen sich ihre jeweilige Dynamik speist. Im dritten Schritt werden Prozesse der Umstellung der Bezugssysteme in Richtung Globalität auf drei Ebenen analysiert: auf der Ebene umfassender historischer Prozesse, auf der Ebene staatlichen Handelns und auf der Ebene individueller Akteure.

  4. Euphemismen und Dysphemismen im Flexibilisierungsdiskurs. Auf dem Weg zu einem mehrperspektivischen Untersuchungsdesign

    Directory of Open Access Journals (Sweden)

    Goranka Rocco

    2015-07-01

    Full Text Available Abstract – This article outlines  theoretical and empirical prolegomena to the discourse-analytical study of euphemisms and dysphemisms which appear in the discourse of ‘flexibility’. After giving an operative definition of the euphemisms and dysphemisms and discussing some epistemological and other problems, the article presents an „EuDy-Modell“ called framework for studying euphemisms and dysphemisms from the perspective of discourse linguistics.Abstract – Der Beitrag enthält theoretische und empirische Prolegomena zu einer diskurslinguistisch orientierten Untersuchung von Euphemismen und Dysphemismen im Flexibilisierungsdiskurs. Zunächst werden eine funktionale Arbeitsdefinition der Begriffe Euphemismus und Dysphemismus gegeben und einige epistemologische und andere Probleme des Forschungsvorhabens erörtert, um im Anschluss ein Modell zur Analyse von Euphemismen und Dysphemismen aus der diskurslinguistischen Perspektive – das „EuDy-Modell“ – vorzustellen.

  5. Theoretical predictor for candidate structure assignment from IMS data of biomolecule-related conformational space.

    Science.gov (United States)

    Schenk, Emily R; Nau, Frederic; Fernandez-Lima, Francisco

    2015-06-01

    The ability to correlate experimental ion mobility data with candidate structures from theoretical modeling provides a powerful analytical and structural tool for the characterization of biomolecules. In the present paper, a theoretical workflow is described to generate and assign candidate structures for experimental trapped ion mobility and H/D exchange (HDX-TIMS-MS) data following molecular dynamics simulations and statistical filtering. The applicability of the theoretical predictor is illustrated for a peptide and protein example with multiple conformations and kinetic intermediates. The described methodology yields a low computational cost and a simple workflow by incorporating statistical filtering and molecular dynamics simulations. The workflow can be adapted to different IMS scenarios and CCS calculators for a more accurate description of the IMS experimental conditions. For the case of the HDX-TIMS-MS experiments, molecular dynamics in the "TIMS box" accounts for a better sampling of the molecular intermediates and local energy minima.

  6. Tumor-like diseases of the knee joint; Tumoraehnliche Erkrankungen im Kniegelenk

    Energy Technology Data Exchange (ETDEWEB)

    Freyschmidt, J. [Klinikum Bremen-Mitte, Beratungsstelle und Referenzzentrum fuer Osteoradiologie, Bremen (Germany)

    2012-11-15

    Radiological diagnostics of tumor-like lesions of the knee joint. Magnetic resonance imaging (MRI), computed tomography (CT) and X-ray imaging. Up to now there have been no studies regarding sensitivity and specificity of the various diagnostic tools (MRI, CT, X-ray) for the visualization of soft tissue tumors of the knee. The method of first choice for detecting soft tissue tumors and tumor-like lesions in the knee joint is MRI. (orig.) [German] Radiologische Diagnostik tumoraehnlicher Laesionen im Kniegelenk. Eingesetzte Verfahren sind die MRT, CT und Projektionsradiographie. Da es sich um Weichteiltumoren handelt, ist die MRT bei der Diagnostik dominierend. Sensitivitaet und Spezifitaet sind unserer Kenntnis nach bisher nicht untersucht worden. In manchen Faellen werden jedoch noch zusaetzliche Roentgen- oder CT-Bilder benoetigt. Bei Verdacht auf einen Tumor im Kniegelenk wird als erste Untersuchung eine MRT empfohlen. (orig.)

  7. Hot plasma and energetic particles in the earth's outer magnetosphere: new understandings during the IMS

    International Nuclear Information System (INIS)

    Baker, D.N.; Fritz, T.A.

    1984-01-01

    In this paper we review the major accomplishments made during the IMS period in clarifying magnetospheric particle variations in the region from roughly geostationary orbit altitudes into the deep magnetotail. We divide our review into three topic areas: (1) acceleration processes; (2) transport processes; and (3) loss processes. Many of the changes in hot plasmas and energetic particle populations are often found to be related intimately to geomagnetic storm and magnetospheric substorm effects and, therefore, substantial emphasis is given to these aspects of particle variations in this review. The IMS data, taken as a body, allow a reasonably unified view as one traces magnetospheric particles from their acceleration source through the plasma sheet and outer trapping regions and, finally, to their loss via ionospheric precipitation and ring current formation processes. It is this underlying, unifying theme which is pursued here. 52 references, 19 figures

  8. A Methodology for Virtual Enterprise Management – Results from IMS 95001/Esprit 26509 Globeman21 project

    DEFF Research Database (Denmark)

    Tølle, Martin; Vesterager, Johan; Pedersen, Jens Dahl

    2000-01-01

    This paper presents results of the recently concluded IMS Globeman21 (Global Manufacturing in the 21st Century, IMS 95001/ESPRIT 26509) project. The results is the Virtual Enterprise Concept, a Virtual Enterprise Framework based upon GERAM (ISO/DIS 15704) and a Methodology for Virtual Enterprise...... management and engineering which is related to the Virtual Enterprise Framework (VEF). Applying the VEF as a basis structure for the Methodology provides a systematic approach for preparation and engineering of virtual enterprises. The Virtual Enterprise Framework opens up the prospect of combining...... experiences in the area of virtual enterprise into an integrated whole enabling researchers or practitioners to focus on subsets of the challenge related to the realisation of the virtual enterprise potentials. In this paper the identification, concept and requirements phases of the methodology are briefly...

  9. Electron attachment rate constant measurement by photoemission electron attachment ion mobility spectrometry (PE-EA-IMS)

    International Nuclear Information System (INIS)

    Su, Desheng; Niu, Wenqi; Liu, Sheng; Shen, Chengyin; Huang, Chaoqun; Wang, Hongmei; Jiang, Haihe; Chu, Yannan

    2012-01-01

    Photoemission electron attachment ion mobility spectrometry (PE-EA-IMS), with a source of photoelectrons induced by vacuum ultraviolet radiation on a metal surface, has been developed to study electron attachment reaction at atmospheric pressure using nitrogen as the buffer gas. Based on the negative ion mobility spectra, the rate constants for electron attachment to tetrachloromethane and chloroform were measured at ambient temperature as a function of the average electron energy in the range from 0.29 to 0.96 eV. The experimental results are in good agreement with the data reported in the literature. - Highlights: ► Photoemission electron attachment ion mobility spectrometry (PE-EA-IMS) was developed to study electron attachment reaction. ► The rate constants of electron attachment to CCl 4 and CHCl 3 were determined. ► The present experimental results are in good agreement with the previously reported data.

  10. Bluetooth in the car: chances and limits; Bluetooth im Auto: Moeglichkeiten und Grenzen

    Energy Technology Data Exchange (ETDEWEB)

    Hascher, W.

    2000-06-01

    Car manufacturers, electronic suppliers and research institutions such as the MIT in the U.S. everywhere work on complementing or replaced the wiring harness by radio links. One way of doing this is ''Bluetooth'', a short-distance-radio technology on the 2.4GHz-band.(orig.). [German] Weltweit wird in den Automobilkonzernen, bei den Elektronik-Zulieferfirmen und in Forschungseinrichtungen (z.B. beim MIT in den USA) daran gearbeitet, den 'Kabelbaum' im Kfz durch Funkverbindungen zu ergaenzen bzw. Teile davon zu ersetzen. Eine Loesung hierfuer ist 'Bluetooth', eine Kurzstrecken-Funktechnologie im 2,4-GHz-Band. (orig.)

  11. DESAKAN SOSIOPOLITIK MUNCULNYA GAGASAN EVOLUSI SYARÎ'AH OLEH AN-NA’IM

    Directory of Open Access Journals (Sweden)

    Mohammad Hefni

    2014-10-01

    Full Text Available Semenjak abad ke-19 M, telah tumbuh perjumpaan intensifantara dunia Muslim dengan peradaban Barat, yangmelahirkan implikasi yang cukup mencengangkan bagiperubahan struktur sosial dunia Muslim. Ketika dunia Muslimmeraih kembali independensinya secara politik daricengkeraman imperialisme dan hegemoni Barat pada abad ke-20 M, salah satu persoalan yang muncul kemudian adalahbagaimana memosisikan syarî'ah dan menjabarkannya kedalam sebuah formulasi yang ideal dan aktual agar mampumengakomodasikan seluruh warga negara dengan latarbelakang suku dan agama yang heterogen. Karenanya, iamenawarkan gagasan evolusi syarî'ah yang meniscayakansyarî'ah dapat menyahuti isu-isu penting bagi masa depankemanusiaan. Dalam membangun gagasannya tentang evolusisyarî’ah, An-Na’im menggunakan teori naskh. Naskh, menurutAn-Na’im, adalah menghapus ayat-ayat Madâniyah denganayat-ayat Makkiyah. Gagasan evolusi syarî’ah dilatarbelakangioleh setting sosiopolitik Sudan sebelum pecah menjadi SudanUtara dan Sudan Selatan.

  12. Otizm Spektrum Bozukluğu Olan Çocukların Sosyal İletişim Becerileri ve Dil Gelişim Özellikleri

    Directory of Open Access Journals (Sweden)

    Meral Çilem Ökcün-Akçamuş

    2016-08-01

    Full Text Available Dil ve iletişim alanında yaşanan güçlükler, otizm spektrum bozukluğunun (OSB tanı ölçütlerinden birisidir ve bu güçlükler OSB olan çocuklarda otizmin şiddetini belirleyen önemli bir değişken olarak ele alınmaktadır. OSB olan çocukların dil gelişiminde heterojen bir yapı olduğu kabul edilmektedir. OSB olan bazı çocuklar sözel dili hiç edinemezken, bazı çocuklarda normal gelişim gösteren akranlarına yakın bir sözel dil kullanım örüntüsü görülebilmektedir. Bu derleme çalışmasında OSB olan çocukların dil ve iletişim becerilerine ilişkin gelişimsel özellikleri incelenmiştir. OSB olan çocuklarda söz öncesi dönemde sözel olmayan sosyal iletişim becerilerine, sözel dil döneminde dilin bileşenlerine ilişkin sendroma özgü gelişimsel özellikler/bozukluklar görülmektedir. Bu nedenle bu derleme çalışmasında OSB olan çocukların söz öncesi dönemde sözel olmayan sosyal iletişim becerilerine yönelik gelişimleri ele alınacaktır. Bunun yanı sıra sözel dil döneminde olan OSB olan çocukların dilin biçimbirim bilgisi/sözdizimi, anlam bilgisi ve kullanım bilgisi bileşenlerine yönelik gelişimsel özellikleri incelenecektir. Alanyazından derlenen bu çalışmanın OSB olan çocuklarda dil gelişimi üzerine çalışan öğretmenlere ve araştırmacılara yol göstereceği düşünülmektedir. Difficulties in language and communication are diagnostic criteria of autism spectrum disorders (ASD and these difficulties are taken as an important variable in determining the severity of the disorder for the children with ASD. It is accepted that language development of children with ASD is heterogeneous. While some of the children can never acquire language, some of them may show language use similar to their peers with typical development. In this review developmental characteristics of children with ASD in language and communication skills are examined. Children with ASD show

  13. [Geisteswissenschaft und Publizistik im Baltikum des 19. und frühen 20. Jahrhunderts] / Manfred von Boetticher

    Index Scriptorium Estoniae

    Boetticher, Manfred von, 1947-

    2012-01-01

    Arvustus: Geisteswissenschaft und Publizistik im Baltikum des 19. und frühen 20. Jahrhunderts (Schriften der Baltischen Historischen Kommission, 17; Baltische Biographische Forschungen, 1). Hrsg. von Norbert Angermann, Wilhelm Lenz und Konrad Maier. (Berlin: LIT-Varlag, 2011)

  14. ImPressOne: A Pressure Display and Acquisition Program for the Low Speed Wind Tunnel at DSTO

    National Research Council Canada - National Science Library

    Blandford, Adam

    2005-01-01

    ... time as the test progresses. A software package called ImPressOne was developed for this purpose giving a graphical display of the pressure and the ability to acquire pressure sets and save the data to file...

  15. 78 FR 22297 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-IMS Global...

    Science.gov (United States)

    2013-04-15

    ..., Baltimore, MD; Microsoft, Redmond, WA; and University of Maryland University College, Adelphi, MD, have... activity of the group research project. Membership in this group research project remains open, and IMS...

  16. [Anja Wilhelmi. Lebensweltlen von Frauen der deutschen Oberschicht im Baltikum (1800-1939). Eine Untersuchung anhand von Autobiographien] / Alexander Ewig

    Index Scriptorium Estoniae

    Ewig, Alexander, 1980-

    2011-01-01

    Arvustus: Wilhelmi, Anja. Lebenswelten von Frauen der deutschen Oberschicht im Baltikum (1800-1939). Eine Untersuchung anhand von Autobiographien. (Veröffentlichungen des Nordost-Instituts, 10.) (Wiesbaden : HArrassowitz 2008)

  17. Enhancing the cellular uptake of Py–Im polyamides through next-generation aryl turns

    OpenAIRE

    Meier, Jordan L.; Montgomery, David C.; Dervan, Peter B.

    2012-01-01

    Pyrrole–imidazole (Py–Im) hairpin polyamides are a class of programmable, sequence-specific DNA binding oligomers capable of disrupting protein–DNA interactions and modulating gene expression in living cells. Methods to control the cellular uptake and nuclear localization of these compounds are essential to their application as molecular probes or therapeutic agents. Here, we explore modifications of the hairpin γ-aminobutyric acid turn unit as a means to enhance cellular uptake and biologica...

  18. Compresión de imágenes médicas

    Directory of Open Access Journals (Sweden)

    Tatiana Noreña

    2013-03-01

    Full Text Available La medicina moderna es una actividad cada vez más compleja, basada en la información proveniente de múltiples fuentes: historias clínicas, dictáfonos e imágenes y vídeos provenientes de múltiples dispositivos. Las imágenes médicas constituyen una de las fuentes de mayor importancia, por cuanto ofrecen un apoyo integral del acto médico: el diagnóstico y el seguimiento. Sin embargo, la cantidad de información generada por los dispositivos de adquisición de imágenes sobrepasa rápidamente la disponibilidad de almacenamiento que tienen los servicios de radiología, lo cual genera costos adicionales en equipos de cómputo con mayor capacidad de almacenamiento. Además, la tendencia actual de desarrollo de aplicaciones en la “nube de cómputo”, tiene limitaciones por cuanto, aunque el almacenamiento es virtual y está disponible desde cualquier sitio, la conexión se hace a través de internet. En estos dos casos, el uso óptimo de la información requiere necesariamente de algoritmos de compresión potentes y adaptados a las necesidades de la actividad médica. En este artículo se presenta una revisión de las técnicas de compresión más utilizadas para el almacenamiento de imágenes, así como un análisis crítico de éstas desde el punto de vista de su uso en ambientes clínicos.   doi: http://dx.doi.org/10.7705/biomedica.v33i1.804

  19. PENERAPAN SYARI’AH DI NEGARA MODERN (Analisis Ijtihad Pemikiran Abdullahi Ahmed An-Na’im

    Directory of Open Access Journals (Sweden)

    Ahmad Bahrur Rozi

    2016-02-01

    Full Text Available Islam is a holistic religion. It means that Islam is a religion which does not only focus on the vertical relation between humans and God but also contains rules of horizontal relation between man and man. Laws with social characteristic lead to the existence of a power as the doer, such as the application of all the punishments and public rewards (al-hudûd wa al-'uqûbât. This article analyzes the thought of Abdullahi Ahmed An--Na’im about syari’ah reformation which is relevant to the constitutionalism standard, criminal law, international law and modern human right, a vision of “syariat modern” which is suitable with the nation state concept which beyond  the offering of the Nation of fundamentalist syariah and the offering of Modern Islamic Nation. The method used by Abdullahi Ahmed An--Na’im is the renewal method which is said as legalized evolution with hermeneutic as the main tool to reach the purpose and normative implication of the text as al-Qur’an. According to Abdullahi Ahmed An--Na’im, the failure of syari’ah application in modern country caused by the crisis on the traditional syari’ah methodology which became its base. Therefore, new syari’ah formulation is needed to be built on the new base. Naskh concept which is initiated by An-Na’im is for answering this crisis.Copyright (c 2016 by Al-Ihkam. All right reservedDOI: 10.19105/al-ihkam.v10i2.734

  20. Die österreichische Medienlandschaft im Umbruch Birgit Stark, Melanie Magin (Hrsg.

    Directory of Open Access Journals (Sweden)

    Clemens Hüffel

    2010-03-01

    Full Text Available Spezifische Medienstrukturen - aktuelle Medienentwicklungen Mit dem Titel „Die österreichische Medienlandschaft im Umbruch“ sind die Erwartungshaltungen des Lesers naturgemäß groß, nicht ganz können diese erfüllt werden. Die Beiträge, wie immer in der Buchreihe „relation“, unterliegen einem Peer-review-Verfahren und sind wissenschaftlich hochwertig. Freilich ist die Lesbarkeit nicht immer gegeben.