1,721,115 research outputs found
Structure and expression of the Zea mays mutS-homologs Mus1 and Mus2
No full textDNA mismatch repair proteins play an important role in maintaining the integrity of the genetic information during replication and homologous recombination. The MutS-homologous (MSH) and MutL-homologous (MLH) proteins are highly conserved among all prokaryotes and eukaryotes. We have isolated two mutS homologous genes from Zea mays, named Mus1 and Mus2. Phylogenetic analysis identifies Mus1 as a member of the MSH2 protein family. Mus2 is an ortholog of the Arabidopsis thaliana MSH7 protein and belongs to a subgroup of MSH proteins that is possibly plant-specific. Mus1 and Mus2 are expressed at very low levels. Mus1 is located on chromosome 7L near locus b32B, and mus2 maps on chromosome 3S
Comment on Zwally and others (2015)-mass gains of the Antarctic ice sheet exceed losses
Full text linkIn their article ‘Mass gains of the Antarctic ice sheet exceed losses’ Zwally and others (2015) choose Vostok Subglacial Lake as an exemplary region to demonstrate their inference of surface height change rates from a portion of the ICESat mission’s laser altimetry data (2003–08). In their appendix, they discuss some of the remarkable differences between their results and those reported by Richter and others (2008, 2013, 2014). However, the selective consideration of our works and the misleading or incorrect interpretation of our results call for clarificationFil: Richter, Andreas Jorg. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Technische Universitaet Dresden; AlemaniaFil: Horwath, M.. Technische Universitaet Dresden; AlemaniaFil: Dietrich, R.. Technische Universitaet Dresden; Alemani
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Signal and error in mass change inferences from GRACE: the case of Antarctica
Full text linkISI Document Delivery No.: 445BS Times Cited: 33 Cited Reference Count: 61 Cited References: Angermann D, 2007, IAG SYMP, V130, P595 Bentley CR, 2004, MASS BALANCE OF THE CRYOSPHERE: OBSERVATIONS AND MODELLING OF CONTEMPORARY AND FUTURE CHANGES, P459, DOI 10.1017/CBO9780511535659.014 Chen JM, 2006, GEOPHYS RES LETT, V33, DOI 10.1029/2006GL026369 Chen JL, 2007, J GEODESY, V81, P237, DOI 10.1007/s00190-006-0055-7 Chen JL, 2008, EARTH PLANET SC LETT, V266, P140, DOI 10.1016/j.epsl.2007.10.057 Cullather RI, 1998, J CLIMATE, V11, P334, DOI 10.1175/1520-0442(1998)0112.0.CO;2 Davis CH, 2005, SCIENCE, V308, P1898, DOI 10.1126/science.1110662 Doll P, 2003, J HYDROL, V270, P105, DOI 10.1016/S0022-1694(02)00283-4 FARRELL WE, 1972, REV GEOPHYS SPACE GE, V10, P761, DOI 10.1029/RG010i003p00761 Fenoglio-Marc L, 2006, GEOPHYS RES LETT, V33, DOI 10.1029/2006GL026851 GFZ, 2007, REL NOT GFZ POTSD GR Han SC, 2005, GEOPHYS RES LETT, V32, DOI 10.1029/2005GL024296 Heiskanen W.A., 1967, PHYS GEODESY Helsen MM, 2008, SCIENCE, V320, P1626, DOI 10.1126/science.1153894 HORWATH M, 2007, P GRACE SCI TEAM M D HORWATH M, 2007, THESIS TU DRESDEN FA HORWATH M, 2007, P JOINT CHAMP GRACE Horwath M, 2006, GEOPHYS RES LETT, V33, DOI 10.1029/2005GL025550 Ilk KH, 2008, IAG SYMP, V132, P3 IVINS ER, 2006, ANTARCTIC SCI, V17, P3 Ivins ER, 2005, ANTARCT SCI, V17, P541, DOI 10.1017/S0954102005002968 Koch K.R, 1999, PARAMETER ESTIMATION Kusche J, 2007, J GEODESY, V81, P733, DOI 10.1007/s00190-007-0143-3 LEGRESY B, 2006, ESA SP, V16 LEGRESY B, 2007, P IUGG 24 GEN ASS 20 Llubes M, 2007, EARTH PLANET SC LETT, V260, P127, DOI 10.1016/j.epsl.2007.05.022 Luthcke SB, 2006, SCIENCE, V314, P1286, DOI 10.1126/science.1130776 LUTHCKE SB, 2007, P GRACE SCI TEAM M D Mayer-Gurr T, 2005, J GEODESY, V78, P462, DOI 10.1007/s00190-004-0413-2 Milly PCD, 2002, J HYDROMETEOROL, V3, P283, DOI 10.1175/1525-7541(2002)0032.0.CO;2 Monaghan AJ, 2006, PHILOS T R SOC A, V364, P1683, DOI 10.1098/rsta.2006.1795 Moore P, 2008, J GEOPHYS RES-EARTH, V113, DOI 10.1029/2007JF000871 Peltier WR, 2004, ANNU REV EARTH PL SC, V32, P111, DOI 10.1146/annurev.earth.32.082503.144359 Peltier WR, 1998, REV GEOPHYS, V36, P603, DOI 10.1029/98RG02638 Ramillien G, 2006, GLOBAL PLANET CHANGE, V53, P198, DOI 10.1016/j.gloplacha.2006.06.003 Ramillien G, 2004, GEOPHYS J INT, V158, P813, DOI 10.1111/j.1365-246X.2004.02328.x Ramillien G, 2005, EARTH PLANET SC LETT, V235, P283, DOI [10.1016/j.epsl.2005.04.005, 10.1016/j.espl.2005.04.005] Reigber C, 2005, J GEODYN, V39, P1, DOI 10.1016/j.jog.2004.07.001 Rignot E, 2008, NAT GEOSCI, V1, P106, DOI 10.1038/ngeo102 Rodell M, 2004, B AM METEOROL SOC, V85, P381, DOI 10.1175/BAMS-85-3-381 Rowlands DD, 2002, J GEODESY, V76, P307, DOI 10.1007/s00190-002-0255-8 Sasgen I, 2007, EARTH PLANET SC LETT, V264, P391, DOI 10.1016/j.epsl.2007.09.029 Schmidt R, 2006, GLOBAL PLANET CHANGE, V50, P112, DOI 10.1016/j.gloplacha.2004.11.018 Schrama EJO, 2007, J GEOPHYS RES-SOL EA, V112, DOI 10.1029/2006JB004882 Seo KW, 2008, GEOPHYS J INT, V172, P41, DOI 10.1111/j.1365-246X.2007.03611.x Seo KW, 2006, WATER RESOUR RES, V42, DOI 10.1029/2005WR004255 Solomon S, 2007, CLIMATE CHANGE 2007: THE PHYSICAL SCIENCE BASIS, P19 Swenson S, 2006, GEOPHYS RES LETT, V33, DOI 10.1029/2005GL025285 Swenson S, 2002, J GEOPHYS RES-SOL EA, V107, DOI 10.1029/2001JB000576 Tapley BD, 2004, SCIENCE, V305, P503, DOI 10.1126/science.1099192 VANICEK P., 1986, GEODESY CONCEPTS van Lipzig NPM, 2002, INT J CLIMATOL, V22, P1197, DOI 10.1002/joc.798 Vaughan DG, 1999, J CLIMATE, V12, P933, DOI 10.1175/1520-0442(1999)0122.0.CO;2 Velicogna I, 2006, NATURE, V443, P329, DOI 10.1038/nature05168 Velicogna I, 2006, SCIENCE, V311, P1754, DOI 10.1126/science.1123785 Wahr J, 1998, J GEOPHYS RES-SOL EA, V103, P30205, DOI 10.1029/98JB02844 WAHR J, 2007, P GRACE SCI TEAM M D Wiehl M, 2005, EARTH OBSERVATION WITH CHAMP: RESULTS FROM THREE YEARS ORBIT, P181, DOI 10.1007/3-540-26800-6_29 Wiehl M, 2005, EARTH OBSERVATION WITH CHAMP: RESULTS FROM THREE YEARS ORBIT, P121, DOI 10.1007/3-540-26800-6_19 Wingham DJ, 2006, PHILOS T R SOC A, V364, P1627, DOI 10.1098/rsta.2006.1792 Wingham DJ, 1998, SCIENCE, V282, P456, DOI 10.1126/science.282.5388.456 Horwath, Martin Dietrich, Reinhard Horwath, Martin/F-9239-2011 Horwath, Martin/0000-0001-5797-244X German Research Foundation (DFG) [Di 473/13, Di 473/17] We gratefully acknowledge comments by two anonymous reviewers and editorial help by Erik Ivins, which lead to great improvements of the original manuscript. This work was supported by the German Research Foundation (DFG) under grants Di 473/13, Di 473/17 (within the Geotechnologien Programme) and Di 473/31 (within the Priority Programme SPP1257 'Mass Transports and Mass Distribution in the Earth System'). 33 OXFORD UNIV PRESS OXFORD GEOPHYS J INTThis paper examines mass changes from Gravity Recovery and Climate Experiment (GRACE) monthly spherical harmonic gravity field solutions, focusing on the application to the Antarctic ice sheet. Regional integration approaches are investigated and compared with an alternative technique of fitting predefined mass change patterns. The main thrust of this new analysis is to better define error sources and error bounds on mass changes of the Antarctic ice sheet. Toward this purpose, we examine the release-4 GRACE products by the GeoForschungsZentrum Potsdam. Although errors related to the correction for glacial isostatic adjustment are significant, both leakage and GRACE error effects are also important. In particular, the details of how mass change interior to the Antarctic continent is weighted and scaled is crucially linked to the end-result mass trend solution. Accounting for error correlations in the GRACE monthly solutions, it is shown that the corresponding errors in Antarctic mass changes are about two times larger than predicted by uncorrelated error propagation. Our ice mass trend estimate for the grounded ice sheet in the period from 08/2002 to 01/2008 is (-109 +/- 48) Gt yr(-1), equivalent to a mean eustatic sea level rise of (+0.30 +/- 0.13) mm yr(-1). We also provide estimates for 16 individual drainage basins. Mass losses concentrate in the coastal regions of West Antarctica and on the Antarctic Peninsula with together (-105 +/- 35) Gt yr(-1). The Amundsen Sea Sector alone contributes (-60 +/- 8) Gt yr(-1). Although these findings agree with independent observations, GRACE trends deduced from a short time-series come with the cautioning footnote that the strength of interannual variations remains undetermined. We finally discuss directions of methodological improvements
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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