1,621 research outputs found

    Open access self-archiving: An author study

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    This, our second author international, cross-disciplinary study on open access had 1296 respondents. Its focus was on self-archiving. Almost half (49%) of the respondent population have self-archived at least one article during the last three years. Use of institutional repositories for this purpose has doubled and usage has increased by almost 60% for subject-based repositories. Self-archiving activity is greatest amongst those who publish the largest number of papers. There is still a substantial proportion of authors unaware of the possibility of providing open access to their work by self-archiving. Of the authors who have not yet self-archived any articles, 71% remain unaware of the option. With 49% of the author population having self-archived in some way, this means that 36% of the total author population (71% of the remaining 51%), has not yet been appraised of this way of providing open access. Authors have frequently expressed reluctance to self-archive because of the perceived time required and possible technical difficulties in carrying out this activity, yet findings here show that only 20% of authors found some degree of difficulty with the first act of depositing an article in a repository, and that this dropped to 9% for subsequent deposits. Another author worry is about infringing agreed copyright agreements with publishers, yet only 10% of authors currently know of the SHERPA/RoMEO list of publisher permissions policies with respect to self-archiving, where clear guidance as to what a publisher permits is provided. Where it is not known if permission is required, however, authors are not seeking it and are self-archiving without it. Communicating their results to peers remains the primary reason for scholars publishing their work; in other words, researchers publish to have an impact on their field. The vast majority of authors (81%) would willingly comply with a mandate from their employer or research funder to deposit copies of their articles in an institutional or subject-based repository. A further 13% would comply reluctantly; 5% would not comply with such a mandate

    Open access self-archiving: An Introduction

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    This, our second author international, cross-disciplinary study on open access had 1296 respondents. Its focus was on self-archiving. Almost half (49%) of the respondent population have self-archived at least one article during the last three years. Use of institutional repositories for this purpose has doubled and usage has increased by almost 60% for subject-based repositories. Self-archiving activity is greatest amongst those who publish the largest number of papers. There is still a substantial proportion of authors unaware of the possibility of providing open access to their work by self-archiving. Of the authors who have not yet self-archived any articles, 71% remain unaware of the option. With 49% of the author population having self-archived in some way, this means that 36% of the total author population (71% of the remaining 51%), has not yet been appraised of this way of providing open access. Authors have frequently expressed reluctance to self-archive because of the perceived time required and possible technical difficulties in carrying out this activity, yet findings here show that only 20% of authors found some degree of difficulty with the first act of depositing an article in a repository, and that this dropped to 9% for subsequent deposits. Another author worry is about infringing agreed copyright agreements with publishers, yet only 10% of authors currently know of the SHERPA/RoMEO list of publisher permissions policies with respect to self-archiving, where clear guidance as to what a publisher permits is provided. Where it is not known if permission is required, however, authors are not seeking it and are self-archiving without it. Communicating their results to peers remains the primary reason for scholars publishing their work; in other words, researchers publish to have an impact on their field. The vast majority of authors (81%) would willingly comply with a mandate from their employer or research funder to deposit copies of their articles in an institutional or subject-based repository. A further 13% would comply reluctantly; 5% would not comply with such a mandate. In a separate exercise we asked the American Physical Society (APS) and the Institute of Physics Publishing Ltd (IOPP) what their experiences have been over the 14 years that arXiv has been in existence. How many subscriptions have been lost as a result of arXiv? Both societies said they could not identify any losses of subscriptions for this reason and that they do not view arXiv as a threat to their business (rather the opposite -- this in fact the APS helped establish an arXiv mirror site at the Brookhaven National Laboratory)

    ISC/OSI Journal Authors Survey Report

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    On behalf of the Joint Information Systems Committee (JISC) and the Open Society Institute (OSI) a survey of journal authors has been carried out by Key Perspectives Ltd. The terms of reference were to poll a cohort of authors who had published on an open access basis and another cohort of authors who had published their work in conventional journals without making the article available on open access. The survey’s aims were to investigate the authors’ awareness of new open access possibilities, the ease of identification of and submission to open access outlets, their experiences of publishing their work in this way, their concerns about any implications open access publishing may have upon their careers, and the reasons why (or not) they chose to publish through an open access outlet

    Novel PET Imaging Techniques in the Management of Hematologic Malignancies

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    Hematology is probably the most relevant application field of PET since the widespread adoption of PET in the 1990s. Currently, the use of PET is indispensable in the natural history of almost all onco-hematologic diseases. With the advent of innovative therapies, such as CAR-T, the use of PET has gained further clinical diagnostic value. Significant innovations are also seen in the therapeutic and theranostic fields, and greater developments are anticipated in the future. Ultimately, the clinical applications of PET in onco-hematology likely represent the largest portion of the daily workload in most PET centers, and clinical hematologists have long relied on these molecular imaging techniques. In the current issue, we have asked leading international experts in onco-hematology imaging and therapy to contribute their insights on the state-of-the-art applications of PET and therapeutic techniques in major hematologic diseases and to provide perspectives on potential future diagnostic and therapeutic applications in this field. Despite the necessarily limited space, we have endeavored to cover all relevant topics. Contributions have come from top experts in both established application fields, which constitute the daily practice, such as in the article “[18F]FDG PET Imaging for Therapy Assessment in Hodgkin and Non-Hodgkin Lymphomas" by the group led by Prof Roland Hustinx, and in new diagnostic possibilities in the article "New PET Tracers for Lymphoma." Therapeutic applications also have an important focus: the past and future of therapeutic applications in lymphomas have been brightly reported by a leading expert, such as Prof Elba Etchebehere, and collaborators. We have given ample space to current and future diagnostic applications in Multiple Myeloma, including a comparison of PET imaging with whole-body MR imaging. This issue would not be complete without mentioning the contribution of new PET machines with long axial fields of view, with an interesting article by Prof Nardo from the University of California, Davis, or the applications of PET in Chimeric Antigen Receptor T-Cell Trafficking, radiomics, or new quantitative PET methods in onco-hematology. In conclusion, the use of PET and radioligand therapies in onco-hematology constitutes the present of our daily activities, but innovations in new theranostic radiopharmaceuticals and technological advancements ensure an increasingly bright future and an ever-greater significance of molecular imaging in onco-hematology. We want to thank all the authors and collaborators for their spontaneous, free, and enthusiastic contributions to this project, which will undoubtedly be a valuable resource for both clinicians and imaging experts

    ALMA and Herschel observations of the prototype dusty and polluted white dwarf G29-38

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    JF gratefully acknowledges the support of the STFC via an Ernest Rutherford Fellowship. AB acknowledges the support of the ANR-2010 BLAN-0505-01 (EXOZODI). MCW and OP are grateful for the support of the European Union through ERC grant number 279973.ALMA Cycle 0 and Herschel PACS observations are reported for the prototype, nearest, and brightest example of a dusty and polluted white dwarf, G29-38. These long-wavelength programmes attempted to detect an outlying, parent population of bodies at 1–100 au, from which originates the disrupted planetesimal debris that is observed within 0.01 au and which exhibits LIR/L* = 0.039. No associated emission sources were detected in any of the data down to LIR/L* ∼ 10−4, generally ruling out cold dust masses greater than 1024–1025 g for reasonable grain sizes and properties in orbital regions corresponding to evolved versions of both asteroid and Kuiper belt analogues. Overall, these null detections are consistent with models of long-term collisional evolution in planetesimal discs, and the source regions for the disrupted parent bodies at stars like G29-38 may only be salient in exceptional circumstances, such as a recent instability. A larger sample of polluted white dwarfs, targeted with the full ALMA array, has the potential to unambiguously identify the parent source(s) of their planetary debris.Peer reviewe

    LINKING UK REPOSITORIES: Technical and organisational models to support user-oriented services across institutional and other digital repositories. SCOPING STUDY REPORT

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    The JISC commissioned the project partners to undertake a scoping study whose aim is to identify sustainable technical and organisational models to support user-oriented services across digital repositories. Open access repositories of interest to UK further and higher education communities were cited as having particular relevance. The study is intended to inform strategies to support access and use of repositories, with a view to the establishment of a national repository services infrastructure or framework

    ALMA Detections of [O iii] and [C ii] Emission Lines From A1689-zD1 at z=7.13

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    A1689-zD1 is one of the most distant galaxies, discovered with the aid of gravitational lensing, providing us with an important opportunity to study galaxy formation in the very early universe. In this study, we report the detection of [C ii]158 μm and [O iii]88 μm emission lines of A1689-zD1 in the Atacama Large Millimeter/submillimeter Array (ALMA) Bands 6 and 8. We measure the redshift of this galaxy as z sys = 7.133 ± 0.005 based on the [C ii] and [O iii] emission lines, consistent with that adopted by Bakx et al. The observed L [O III]/L [C II] ratio is 2.09 ± 0.09, higher than that of most of the local galaxies, but consistent with other z ∼7 galaxies. The moderate spatial resolution of ALMA data provided us with a precious opportunity to investigate spatial variation of L [O III]/L [C II]. In contrast to the average value of 2.09, we find a much higher L [O III]/L [C II] of ∼7 at the center of the galaxy. This spatial variation of L [O III]/L [C II] was seldom reported for other high-z galaxies. It is also interesting that the peak of the ratio does not overlap with optical peaks. Possible physical reasons include a central active galactic nucleus, shock heating from merging, and a starburst. Our moderate spatial resolution data also reveal that in addition to the observed two clumps shown in previous Hubble Space Telescope images, there is a redshifted segment to the west of the northern optical clump. This structure is consistent with previous claims that A1689-zD1 is a merging galaxy, but with the northern redshifted part being some ejected material, or that the northern redshifted material stems from a third more highly obscured region of the galaxy. © 2022. The Author(s)

    El Tlacuache Núm. 342 (2008). 342 Año 9 (2008) diciembre. El Tlacuache

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    El recinto ceremonial prehispánico de Tequesquitengo – Venado por Gilberto Manuel Barragán Dorantes, Georgia Yris Bravo López. - Tintes vegetales por Alma Graciela de la Cruz. - El Yauhtli por Margarita Avilés Flores y Macrina Fuentes Mata

    PROSPECTIVE WORK FOR ALMA: THE MILLIMETERWAVE AND SUBMILLIMETERWAVE SPECTRUM OF 13^{13}C-GLYCOLALDEHYDE

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    This work is supported by the Programme National de Physico-Chimie du Milieu Interstellaire (PCMI-CNRS) and by the contract ANR-08-BLAN-0054.Author Institution: Laboratoire PhLAM, UMR8523 CNRS-Universite; Lille 1, F-59655 Villeneuve d'Ascq Cedex, France; UMR6226 CNRS-Ecole Nationale; Superieure de Chimie de Rennes,F-35700 Rennes, FranceGlycolaldehyde has been identified in interstellar sources ~{\bf 554}(2001) L81 ; R.~A.~H.~Butler, F.~C.~De~Lucia, D.~T~Petkie, et al., {\em Astrophys.~J.~Supp.}~{\bf 134} (2001) 319 ; M.~T.~Beltran, C.~Codella, S.~Viti, R.~Niri, R.~Cesaroni, {\em Astrophys.~J.}~{\bf 690} (2009) L93.}. The relative abundance ratios of the three isomers (acetic acid) : (glycolaldehyde) : (methylformate) were estimated . The detection of 13^{13}C1_1 and 13^{13}C2_2 isotopomers of methylformate has been recently reported in Orion, as a result of the detailled labororatory spectroscopic study~{\bf 500} (2009) 1109.}. Therefore the spectroscopy of the 13^{13}C isotopomers of glycolaldehyde is investigated in laboratory in order to provide data for an astronomical search. The instrument ALMA will certainly be a good instrument to detect them. Up to now, only the microwave spectra of 13^{13}CH2_2OH-CHO and of CH2_2OH-13^{13}CHO have been observed several years ago in the 12-40 GHz range~{\bf 16} (1973) 259.}. Spectra of both species are presently recorded in Lille in the 150-950 GHz range with the new submillimetre-wave spectrometer based on harmonic generation of a microwave synthesizer source, using only solid-state devices, and coupled to a cell of 2.2 m length~{\bf 264} (2010) 94.}. The absolute accuracy of the line positions is better than 30 KHz. The rotational structure of the ground state and of the three first excited vibrational states has been observed. Two 13^{13}C enriched samples were used. The analysis is in progress
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